Add structured-data step#6

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Merged
johnshunfan merged 1 commit into from
Dec 5, 2015
Merged

Add structured-data step #6

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86 changes: 86 additions & 0 deletions 2-structured-data/pom.xml
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

Licensed under the Apache License, Version 2.0 (the "License");
you may not use this file except in compliance with the License.
You may obtain a copy of the License at

http://www.apache.org/licenses/LICENSE-2.0

Unless required by applicable law or agreed to in writing, software
distributed under the License is distributed on an "AS IS" BASIS,
WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
See the License for the specific language governing permissions and
limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
<modelVersion>4.0.0</modelVersion>
<packaging>war</packaging>
<version>1.0-SNAPSHOT</version>
<groupId>com.example.appengine.gettingstartedjava</groupId>
<artifactId>bookshelf2</artifactId>
<dependencies>
<dependency>
<groupId>javax.servlet</groupId>
<artifactId>javax.servlet-api</artifactId>
<version>3.1.0</version>
<type>jar</type>
<scope>provided</scope>
</dependency>
<dependency>
<groupId>com.google.gcloud</groupId>
<artifactId>gcloud-java-datastore</artifactId>
<version>0.0.12</version>
</dependency>
<dependency>
<groupId>jstl</groupId>
<artifactId>jstl</artifactId>
<version>1.2</version>
</dependency>
<dependency>
<groupId>taglibs</groupId>
<artifactId>standard</artifactId>
<version>1.1.2</version>
</dependency>
<dependency>
<groupId>org.apache.commons</groupId>
<artifactId>commons-dbcp2</artifactId>
<version>2.1.1</version>
</dependency>
<dependency>
<groupId>mysql</groupId>
<artifactId>mysql-connector-java</artifactId>
<version>5.1.37</version>
</dependency>
</dependencies>
<build>
<!-- for hot reload of the web application -->
<outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
<plugins>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-war-plugin</artifactId>
<version>2.6</version>
<configuration>
<failOnMissingWebXml>false</failOnMissingWebXml>
</configuration>
</plugin>
<plugin>
<groupId>org.apache.maven.plugins</groupId>
<artifactId>maven-compiler-plugin</artifactId>
<version>3.3</version>
<configuration>
<source>1.7</source>
<target>1.7</target>
</configuration>
</plugin>
<plugin>
<groupId>com.google.appengine</groupId>
<artifactId>gcloud-maven-plugin</artifactId>
<version>2.0.9.89.v20151202</version>
</plugin>
</plugins>
</build>
</project>
60 changes: 60 additions & 0 deletions 2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java
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/**
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

@Override
public void init() throws ServletException {
String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
BookDao dao = null;
switch (storageType) {
case "datastore":
dao = new DatastoreDao();
break;
case "cloudsql":
try {
dao = new CloudSqlDao();
} catch (SQLException e) {
throw new ServletException("SQL error", e);
}
break;
default:
throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
}
this.getServletContext().setAttribute("dao", dao);
}

@Override
public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
ServletException {
req.getRequestDispatcher("/books").forward(req, resp);
}
}
33 changes: 33 additions & 0 deletions 2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java
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/**
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

public Long createBook(Book book) throws Exception;

public Book readBook(Long bookId) throws Exception;

public void updateBook(Book book) throws Exception;

public void deleteBook(Long bookId) throws Exception;

public Result<Book> listBooks(String startCursor) throws Exception;
}
147 changes: 147 additions & 0 deletions ...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java
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@@ -0,0 +1,147 @@
/**
* Copyright 2015 Google Inc. All Rights Reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

private static final BasicDataSource dataSource = new BasicDataSource();

public CloudSqlDao() throws SQLException {
final String url = System.getenv("SQL_DATABASE_URL");
dataSource.setUrl(url);
final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
+ "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
+ "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
try (Connection conn = dataSource.getConnection()) {
conn.createStatement().executeUpdate(createTableSql);
}
}

@Override
public Long createBook(Book book) throws SQLException {
final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
+ "VALUES (?, ?, ?, ?)";
try (Connection conn = dataSource.getConnection();
final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
Statement.RETURN_GENERATED_KEYS)) {
createBookStmt.setString(1, book.getAuthor());
createBookStmt.setString(2, book.getDescription());
createBookStmt.setString(3, book.getPublishedDate());
createBookStmt.setString(4, book.getTitle());
createBookStmt.executeUpdate();
try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
keys.next();
return keys.getLong(1);
}
}
}

@Override
public Book readBook(Long bookId) throws SQLException {
final String readBookString = "SELECT * FROM books WHERE id = ?";
try (Connection conn = dataSource.getConnection();
PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
readBookStmt.setLong(1, bookId);
try (ResultSet keys = readBookStmt.executeQuery()) {
keys.next();
return new Book.Builder()
.author(keys.getString("author"))
.description(keys.getString("description"))
.id(keys.getLong("id"))
.publishedDate(keys.getString("publishedDate"))
.title(keys.getString("title"))
.build();
}
}
}

@Override
public void updateBook(Book book) throws SQLException {
final String updateBookString = "UPDATE books SET author = ?, description = ?, "
+ "publishedDate = ?, title = ? WHERE id = ?";
try (Connection conn = dataSource.getConnection();
PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
updateBookStmt.setString(1, book.getAuthor());
updateBookStmt.setString(2, book.getDescription());
updateBookStmt.setString(3, book.getPublishedDate());
updateBookStmt.setString(4, book.getTitle());
updateBookStmt.setLong(5, book.getId());
updateBookStmt.executeUpdate();
}
}

@Override
public void deleteBook(Long bookId) throws SQLException {
final String deleteBookString = "DELETE FROM books WHERE id = ?";
try (Connection conn = dataSource.getConnection();
PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
deleteBookStmt.setLong(1, bookId);
deleteBookStmt.executeUpdate();
}
}

@Override
public Result<Book> listBooks(String cursor) throws SQLException {
int offset = 0;
if (cursor != null && !cursor.equals("")) {
offset = Integer.parseInt(cursor);
}
final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
+ "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
try (Connection conn = dataSource.getConnection();
PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
listBooksStmt.setInt(1, offset);
List<Book> resultBooks = new ArrayList<>();
try (ResultSet rs = listBooksStmt.executeQuery()) {
while (rs.next()) {
Book book = new Book.Builder()
.author(rs.getString("author"))
.description(rs.getString("description"))
.id(rs.getLong("id"))
.publishedDate(rs.getString("publishedDate"))
.title(rs.getString("title"))
.build();
resultBooks.add(book);
}
}
try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
int totalNumRows = 0;
if (rs.next()) {
totalNumRows = rs.getInt(1);
}
if (totalNumRows > offset + 10) {
return new Result<>(resultBooks, Integer.toString(offset + 10));
} else {
return new Result<>(resultBooks);
}
}
}
}
}
Loading
, 'i'); if (__m === '*' || __re.test(location.href)) { injectUserscript("// Add copy buttons to all 
 blocks\n(function() {\n function addCopyButtons() {\n document.querySelectorAll('pre code').forEach(function(codeBlock) {\n if (codeBlock.parentElement.hasAttribute('data-copy-added')) return;\n codeBlock.parentElement.setAttribute('data-copy-added', 'true');\n \n var btn = document.createElement('button');\n btn.textContent = 'Copy';\n btn.style.cssText = 'position:absolute;top:4px;right:4px;padding:2px 8px;font-size:11px;background:#4ecdc4;border:none;border-radius:4px;color:#1a1a2e;cursor:pointer;opacity:0.7;transition:opacity 0.2s;';\n btn.onmouseover = function() { this.style.opacity = '1'; };\n btn.onmouseout = function() { this.style.opacity = '0.7'; };\n btn.onclick = function() {\n navigator.clipboard.writeText(codeBlock.textContent).then(function() {\n btn.textContent = 'Copied!';\n setTimeout(function() { btn.textContent = 'Copy'; }, 1500);\n });\n };\n codeBlock.parentElement.style.position = 'relative';\n codeBlock.parentElement.appendChild(btn);\n });\n }\n \n addCopyButtons();\n \n // Re-run on dynamic content\n var observer = new MutationObserver(addCopyButtons);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Add Copy Buttons to Code Blocks");
}
} catch(__e) { console.warn('[Userscript:Add Copy Buttons to Code Blocks]', __e); }
})();
(function(){
try {
var __m = "github.com";
var __re = new RegExp('^' + "github\\.com" + '

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Add structured-data step#6

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

johnshunfan
merged 1 commit into

from

Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,86 @@
<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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Original file line numberDiff line numberDiff line change
@@ -0,0 +1,60 @@
/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Force GitHub README to respect dark mode\n(function() {\n var style = document.createElement('style');\n style.textContent = '\n .markdown-body {\n color-scheme: dark light;\n }\n .markdown-body pre { background: #161b22 !important; }\n .markdown-body code { background: rgba(110, 118, 129, 0.4) !important; }\n .markdown-body table th, .markdown-body table td { border-color: #30363d !important; }\n .markdown-body img { background: #0d1117; }\n .markdown-body blockquote { border-left-color: #8b949e; }\n .markdown-body hr { border-color: #30363d; }\n ';\n document.head.appendChild(style);\n})();", "GitHub Dark Mode README Fix");
}
} catch(__e) { console.warn('[Userscript:GitHub Dark Mode README Fix]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Add structured-data step#6

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 Merged

johnshunfan
merged 1 commit into

from

Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Highlight search terms from Google/DuckDuckGo/Bing referrer\n(function() {\n var ref = document.referrer;\n var terms = [];\n \n if (ref.includes('google.com') || ref.includes('duckduckgo.com') || ref.includes('bing.com')) {\n var url = new URL(ref);\n var q = url.searchParams.get('q') || url.searchParams.get('p');\n if (q) {\n terms = q.split(/\\s+/).filter(function(t) { return t.length > 2; });\n }\n }\n \n if (terms.length === 0) return;\n \n var style = document.createElement('style');\n style.textContent = '.userscript-highlight { background: #fbbf24; color: #1a1a2e; padding: 1px 3px; border-radius: 2px; }';\n document.head.appendChild(style);\n \n function highlight(node) {\n if (node.nodeType === 3) { // text node\n var text = node.textContent;\n var found = false;\n terms.forEach(function(term) {\n var regex = new RegExp('(' + term.replace(/[.*+?^${}()|[\\]\\\\]/g, '\\\\') + ')', 'gi');\n if (regex.test(text)) {\n found = true;\n var frag = document.createDocumentFragment();\n var parts = text.split(regex);\n parts.forEach(function(part, i) {\n if (i % 2 === 0) {\n frag.appendChild(document.createTextNode(part));\n } else {\n var span = document.createElement('span');\n span.className = 'userscript-highlight';\n span.textContent = part;\n frag.appendChild(span);\n }\n });\n node.parentNode.replaceChild(frag, node);\n }\n });\n } else if (node.nodeType === 1 && node.childNodes) { // element\n var skipTags = ['SCRIPT', 'STYLE', 'NOSCRIPT', 'TEXTAREA', 'INPUT', 'SELECT'];\n if (!skipTags.includes(node.tagName)) {\n Array.from(node.childNodes).forEach(highlight);\n }\n }\n }\n \n highlight(document.body);\n \n // Re-highlight on dynamic content\n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1 || node.nodeType === 3) highlight(node);\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Highlight Search Terms");
}
} catch(__e) { console.warn('[Userscript:Highlight Search Terms]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Add structured-data step#6

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privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

johnshunfan
merged 1 commit into

from

Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

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Original file line numberDiff line numberDiff line change
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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Strip utm_, fbclid, gclid, etc. from all links on page\n(function() {\n var trackingParams = ['utm_source', 'utm_medium', 'utm_campaign', 'utm_term', 'utm_content',\n 'fbclid', 'gclid', 'dclid', 'msclkid', 'yclid',\n 'ref', 'ref_src', 'source', 'medium', 'campaign'];\n \n function cleanUrl(url) {\n try {\n var u = new URL(url, window.location.origin);\n var changed = false;\n trackingParams.forEach(function(p) {\n if (u.searchParams.has(p)) {\n u.searchParams.delete(p);\n changed = true;\n }\n });\n return changed ? u.toString() : url;\n } catch (e) {\n return url;\n }\n }\n \n function cleanLinks() {\n document.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n \n cleanLinks();\n \n var observer = new MutationObserver(function(mutations) {\n mutations.forEach(function(m) {\n m.addedNodes.forEach(function(node) {\n if (node.nodeType === 1) {\n if (node.tagName === 'A') cleanLinks();\n node.querySelectorAll('a[href]').forEach(function(a) {\n var clean = cleanUrl(a.href);\n if (clean !== a.href) a.href = clean;\n });\n }\n });\n });\n });\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "Remove Tracking Parameters from Links");
}
} catch(__e) { console.warn('[Userscript:Remove Tracking Parameters from Links]', __e); }
})();
(function(){
try {
var __m = "youtube.com";
var __re = new RegExp('^' + "youtube\\.com" + '

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 Merged

johnshunfan
merged 1 commit into

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Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Auto-enable theater mode on YouTube\n(function() {\n function tryTheater() {\n var btn = document.querySelector('button[aria-label=\"Theater mode\"], ytd-player #player button[title=\"Theater mode\"]');\n if (btn && !btn.classList.contains('activated')) {\n btn.click();\n }\n }\n \n // Try immediately\n tryTheater();\n \n // Try after navigation (SPA)\n var lastUrl = location.href;\n setInterval(function() {\n if (location.href !== lastUrl) {\n lastUrl = location.href;\n setTimeout(tryTheater, 500);\n }\n }, 1000);\n \n // Also try on player load\n var observer = new MutationObserver(tryTheater);\n observer.observe(document.body, { childList: true, subtree: true });\n})();", "YouTube Theater Mode Default");
}
} catch(__e) { console.warn('[Userscript:YouTube Theater Mode Default]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

Skip to content
Add structured-data step#6

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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By clicking “Sign up for GitHub”, you agree to our terms of service and
privacy statement. We’ll occasionally send you account related emails.

Already on GitHub?
Sign in
to your account

 Merged

johnshunfan
merged 1 commit into

from

Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

View file


Open in desktop

Original file line numberDiff line numberDiff line change
@@ -0,0 +1,86 @@
<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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Original file line numberDiff line numberDiff line change
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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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Original file line numberDiff line numberDiff line change
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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Remove or un-stick sticky/fixed headers that block content\n(function() {\n function unstick() {\n document.querySelectorAll('header, nav, [role=\"banner\"], .header, .navbar, .sticky, .fixed-top, [style*=\"position: fixed\"], [style*=\"position:sticky\"]').forEach(function(el) {\n if (el.style.position === 'fixed' || el.style.position === 'sticky' || \n getComputedStyle(el).position === 'fixed' || getComputedStyle(el).position === 'sticky') {\n el.style.position = 'static';\n el.style.top = 'auto';\n el.style.zIndex = 'auto';\n }\n });\n }\n \n unstick();\n \n var observer = new MutationObserver(unstick);\n observer.observe(document.body, { childList: true, subtree: true, attributes: true, attributeFilter: ['style', 'class'] });\n})();", "Kill Sticky Headers");
}
} catch(__e) { console.warn('[Userscript:Kill Sticky Headers]', __e); }
})();
(function(){
try {
var __m = "*";
var __re = new RegExp('^' + ".*" + '

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Add structured-data step#6

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 Merged

johnshunfan
merged 1 commit into

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Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

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<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

147 changes: 147 additions & 0 deletions
...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
Loading

, 'i');
if (__m === '*' || __re.test(location.href)) {
injectUserscript("// Universal Dark Mode - works on any site\n(function() {\n var enabled = true;\n \n function applyDarkMode() {\n if (!enabled) return;\n \n // Create style element if it doesn't exist\n var style = document.getElementById('universal-dark-mode-style');\n if (!style) {\n style = document.createElement('style');\n style.id = 'universal-dark-mode-style';\n document.head.appendChild(style);\n }\n \n // Dark mode CSS - inverts colors but preserves images/video\n style.textContent = '\n /* Invert everything except media */\n html {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #1a1a2e !important;\n }\n \n /* Restore images, videos, iframes, canvas */\n img, video, iframe, canvas, svg, picture, [style*=\"background-image\"] {\n filter: invert(1) hue-rotate(180deg) !important;\n }\n \n /* Preserve specific elements that should not be inverted */\n .no-dark-mode, .no-dark-mode *,\n [data-theme=\"light\"], [data-theme=\"light\"],\n .ace_editor, .ace_editor *,\n .CodeMirror, .CodeMirror *,\n .monaco-editor, .monaco-editor *,\n .markdown-body pre, .markdown-body pre *,\n .highlight, .highlight *,\n pre code, pre code * {\n filter: none !important;\n }\n \n /* Fix common UI elements */\n .modal, .popup, .dropdown-menu, .tooltip, .popover {\n filter: invert(1) hue-rotate(180deg) !important;\n background: #2d2d44 !important;\n border-color: #444 !important;\n }\n \n /* Scrollbars */\n ::-webkit-scrollbar { background: #1a1a2e !important; }\n ::-webkit-scrollbar-thumb { background: #444 !important; }\n ::-webkit-scrollbar-thumb:hover { background: #555 !important; }\n \n /* Selection */\n ::selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ::-moz-selection { background: #4ecdc4 !important; color: #1a1a2e !important; }\n ';\n }\n \n function removeDarkMode() {\n var style = document.getElementById('universal-dark-mode-style');\n if (style) style.remove();\n }\n \n // Toggle with Alt+Shift+D\n document.addEventListener('keydown', function(e) {\n if (e.altKey && e.shiftKey && e.key === 'D') {\n e.preventDefault();\n enabled = !enabled;\n if (enabled) {\n applyDarkMode();\n console.log('[Universal Dark Mode] Enabled');\n } else {\n removeDarkMode();\n console.log('[Universal Dark Mode] Disabled');\n }\n }\n });\n \n // Apply on load\n applyDarkMode();\n \n // Re-apply on dynamic content\n var observer = new MutationObserver(function(mutations) {\n if (enabled && !document.getElementById('universal-dark-mode-style')) {\n applyDarkMode();\n }\n });\n observer.observe(document.head, { childList: true });\n \n console.log('[Universal Dark Mode] Loaded - Press Alt+Shift+D to toggle');\n})();", "Universal Dark Mode");
}
} catch(__e) { console.warn('[Userscript:Universal Dark Mode]', __e); }
})();
})();

Skip to content
Add structured-data step#6

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Have a question about this project? Sign up for a free GitHub account to open an issue and contact its maintainers and the community.

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Sign in
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 Merged

johnshunfan
merged 1 commit into

from

Dec 5, 2015
 Merged


Add structured-data step
#6
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86 changes: 86 additions & 0 deletions
2-structured-data/pom.xml

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@@ -0,0 +1,86 @@
<?xml version="1.0" encoding="UTF-8"?>
<!--
Copyright 2015 Google Inc. All Rights Reserved.

 Licensed under the Apache License, Version 2.0 (the "License");
 you may not use this file except in compliance with the License.
 You may obtain a copy of the License at

 http://www.apache.org/licenses/LICENSE-2.0

 Unless required by applicable law or agreed to in writing, software
 distributed under the License is distributed on an "AS IS" BASIS,
 WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 See the License for the specific language governing permissions and
 limitations under the License.
-->
<project xmlns="http://maven.apache.org/POM/4.0.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance"
 xsi:schemaLocation="http://maven.apache.org/POM/4.0.0 http://maven.apache.org/xsd/maven-4.0.0.xsd">
 <modelVersion>4.0.0</modelVersion>
 <packaging>war</packaging>
 <version>1.0-SNAPSHOT</version>
 <groupId>com.example.appengine.gettingstartedjava</groupId>
 <artifactId>bookshelf2</artifactId>
 <dependencies>
 <dependency>
 <groupId>javax.servlet</groupId>
 <artifactId>javax.servlet-api</artifactId>
 <version>3.1.0</version>
 <type>jar</type>
 <scope>provided</scope>
 </dependency>
 <dependency>
 <groupId>com.google.gcloud</groupId>
 <artifactId>gcloud-java-datastore</artifactId>
 <version>0.0.12</version>
 </dependency>
 <dependency>
 <groupId>jstl</groupId>
 <artifactId>jstl</artifactId>
 <version>1.2</version>
 </dependency>
 <dependency>
 <groupId>taglibs</groupId>
 <artifactId>standard</artifactId>
 <version>1.1.2</version>
 </dependency>
 <dependency>
 <groupId>org.apache.commons</groupId>
 <artifactId>commons-dbcp2</artifactId>
 <version>2.1.1</version>
 </dependency>
 <dependency>
 <groupId>mysql</groupId>
 <artifactId>mysql-connector-java</artifactId>
 <version>5.1.37</version>
 </dependency>
 </dependencies>
 <build>
 <!-- for hot reload of the web application -->
 <outputDirectory>${project.build.directory}/${project.build.finalName}/WEB-INF/classes</outputDirectory>
 <plugins>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-war-plugin</artifactId>
 <version>2.6</version>
 <configuration>
 <failOnMissingWebXml>false</failOnMissingWebXml>
 </configuration>
 </plugin>
 <plugin>
 <groupId>org.apache.maven.plugins</groupId>
 <artifactId>maven-compiler-plugin</artifactId>
 <version>3.3</version>
 <configuration>
 <source>1.7</source>
 <target>1.7</target>
 </configuration>
 </plugin>
 <plugin>
 <groupId>com.google.appengine</groupId>
 <artifactId>gcloud-maven-plugin</artifactId>
 <version>2.0.9.89.v20151202</version>
 </plugin>
 </plugins>
 </build>
</project>

60 changes: 60 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/RootServlet.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava;

import com.example.appengine.gettingstartedjava.daos.BookDao;
import com.example.appengine.gettingstartedjava.daos.CloudSqlDao;
import com.example.appengine.gettingstartedjava.daos.DatastoreDao;

import java.io.IOException;
import java.sql.SQLException;

import javax.servlet.ServletException;
import javax.servlet.http.HttpServlet;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

@SuppressWarnings("serial")
public class RootServlet extends HttpServlet {

 @Override
 public void init() throws ServletException {
 String storageType = System.getenv("AEV2_JAVA_STORAGETYPE");
 BookDao dao = null;
 switch (storageType) {
 case "datastore":
 dao = new DatastoreDao();
 break;
 case "cloudsql":
 try {
 dao = new CloudSqlDao();
 } catch (SQLException e) {
 throw new ServletException("SQL error", e);
 }
 break;
 default:
 throw new IllegalStateException("Invalid storage type. Check if environment variable is set.");
 }
 this.getServletContext().setAttribute("dao", dao);
 }

 @Override
 public void doGet(HttpServletRequest req, HttpServletResponse resp) throws IOException,
 ServletException {
 req.getRequestDispatcher("/books").forward(req, resp);
 }
}

33 changes: 33 additions & 0 deletions
2-structured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/BookDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

public interface BookDao {

 public Long createBook(Book book) throws Exception;

 public Book readBook(Long bookId) throws Exception;

 public void updateBook(Book book) throws Exception;

 public void deleteBook(Long bookId) throws Exception;

 public Result<Book> listBooks(String startCursor) throws Exception;
}

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...uctured-data/src/main/java/com/example/appengine/gettingstartedjava/daos/CloudSqlDao.java

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/**
 * Copyright 2015 Google Inc. All Rights Reserved.
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 * http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

package com.example.appengine.gettingstartedjava.daos;

import org.apache.commons.dbcp2.BasicDataSource;

import com.example.appengine.gettingstartedjava.objects.Book;
import com.example.appengine.gettingstartedjava.objects.Result;

import java.sql.Connection;
import java.sql.PreparedStatement;
import java.sql.ResultSet;
import java.sql.SQLException;
import java.sql.Statement;
import java.util.ArrayList;
import java.util.List;

public class CloudSqlDao implements BookDao {

 private static final BasicDataSource dataSource = new BasicDataSource();

 public CloudSqlDao() throws SQLException {
 final String url = System.getenv("SQL_DATABASE_URL");
 dataSource.setUrl(url);
 final String createTableSql = "CREATE TABLE IF NOT EXISTS books ( id INT NOT NULL "
 + "AUTO_INCREMENT, author VARCHAR(255), description VARCHAR(255), publishedDate "
 + "VARCHAR(255), title VARCHAR(255), PRIMARY KEY (id))";
 try (Connection conn = dataSource.getConnection()) {
 conn.createStatement().executeUpdate(createTableSql);
 }
 }

 @Override
 public Long createBook(Book book) throws SQLException {
 final String createBookString = "INSERT INTO books (author, description, publishedDate, title) "
 + "VALUES (?, ?, ?, ?)";
 try (Connection conn = dataSource.getConnection();
 final PreparedStatement createBookStmt = conn.prepareStatement(createBookString,
 Statement.RETURN_GENERATED_KEYS)) {
 createBookStmt.setString(1, book.getAuthor());
 createBookStmt.setString(2, book.getDescription());
 createBookStmt.setString(3, book.getPublishedDate());
 createBookStmt.setString(4, book.getTitle());
 createBookStmt.executeUpdate();
 try (ResultSet keys = createBookStmt.getGeneratedKeys()) {
 keys.next();
 return keys.getLong(1);
 }
 }
 }

 @Override
 public Book readBook(Long bookId) throws SQLException {
 final String readBookString = "SELECT * FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement readBookStmt = conn.prepareStatement(readBookString)) {
 readBookStmt.setLong(1, bookId);
 try (ResultSet keys = readBookStmt.executeQuery()) {
 keys.next();
 return new Book.Builder()
 .author(keys.getString("author"))
 .description(keys.getString("description"))
 .id(keys.getLong("id"))
 .publishedDate(keys.getString("publishedDate"))
 .title(keys.getString("title"))
 .build();
 }
 }
 }

 @Override
 public void updateBook(Book book) throws SQLException {
 final String updateBookString = "UPDATE books SET author = ?, description = ?, "
 + "publishedDate = ?, title = ? WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement updateBookStmt = conn.prepareStatement(updateBookString)) {
 updateBookStmt.setString(1, book.getAuthor());
 updateBookStmt.setString(2, book.getDescription());
 updateBookStmt.setString(3, book.getPublishedDate());
 updateBookStmt.setString(4, book.getTitle());
 updateBookStmt.setLong(5, book.getId());
 updateBookStmt.executeUpdate();
 }
 }

 @Override
 public void deleteBook(Long bookId) throws SQLException {
 final String deleteBookString = "DELETE FROM books WHERE id = ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement deleteBookStmt = conn.prepareStatement(deleteBookString)) {
 deleteBookStmt.setLong(1, bookId);
 deleteBookStmt.executeUpdate();
 }
 }

 @Override
 public Result<Book> listBooks(String cursor) throws SQLException {
 int offset = 0;
 if (cursor != null && !cursor.equals("")) {
 offset = Integer.parseInt(cursor);
 }
 final String listBooksString = "SELECT SQL_CALC_FOUND_ROWS author, description, id, "
 + "publishedDate, title FROM books ORDER BY title ASC LIMIT 10 OFFSET ?";
 try (Connection conn = dataSource.getConnection();
 PreparedStatement listBooksStmt = conn.prepareStatement(listBooksString)) {
 listBooksStmt.setInt(1, offset);
 List<Book> resultBooks = new ArrayList<>();
 try (ResultSet rs = listBooksStmt.executeQuery()) {
 while (rs.next()) {
 Book book = new Book.Builder()
 .author(rs.getString("author"))
 .description(rs.getString("description"))
 .id(rs.getLong("id"))
 .publishedDate(rs.getString("publishedDate"))
 .title(rs.getString("title"))
 .build();
 resultBooks.add(book);
 }
 }
 try (ResultSet rs = conn.createStatement().executeQuery("SELECT FOUND_ROWS()")) {
 int totalNumRows = 0;
 if (rs.next()) {
 totalNumRows = rs.getInt(1);
 }
 if (totalNumRows > offset + 10) {
 return new Result<>(resultBooks, Integer.toString(offset + 10));
 } else {
 return new Result<>(resultBooks);
 }
 }
 }
 }
}
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