Feature/db.class.update

README.md

@@ -363,6 +363,18 @@ db.class.get('MyClass')
 });
 ```
 
+### Updating an existing class
+
+```js
+db.class.update({
+  name: 'MyClass',
+  superClass: 'V'
+})
+.then(function (MyClass) {
+  console.log('Updated class: ' + MyClass.name + ' that extends ' + MyClass.superClass);
+});
+```
+
 ### Listing properties in a class
 
 ```js

lib/db/class/index.js

@@ -217,7 +217,7 @@ exports.create = function (name, parentName, cluster, isAbstract) {
   if (cluster) {
     query += ' CLUSTER ' + cluster;
   }
-  
+
   if(isAbstract) {
     query += ' ABSTRACT';
   }
@@ -232,6 +232,31 @@ exports.create = function (name, parentName, cluster, isAbstract) {
   });
 };
 
+/**
+ * Update the given class.
+ *
+ * @param   {Object}  class    The class settings.
+ * @param   {Boolean} reload   Whether to reload the class, default to true.
+ * @promise {Object}           The updated class.
+ */
+exports.update = function (cls, reload) {
+  var promises = [],
+      prefix = 'ALTER CLASS ' + cls.name + ' ';
+
+  if (reload == null) {
+    reload = true;
+  }
+
+  if (cls.superClass !== undefined) {
+    promises.push(this.exec(prefix + 'SUPERCLASS ' + cls.superClass));
+  }
+
+  return Promise.all(promises)
+  .bind(this)
+  .then(function () {
+    return this.class.get(cls.name, reload);
+  });
+};
 
 /**
  * Delete a class.
@@ -250,7 +275,6 @@ exports.drop = function (name) {
   });
 };
 
-
 /**
  * Get a class by name.
  *

test/db/class-test.js

@@ -33,6 +33,29 @@ describe("Database API - Class", function () {
       return this.db.class.create('TestClass')
       .then(function (item) {
         item.name.should.equal('TestClass');
+        item.should.have.property('superClass', null);
+        item.should.be.an.instanceOf(Class);
+      });
+    });
+    it('should create a class with the given name and a superClass', function () {
+      return this.db.class.create('TestClassExtended', 'V')
+      .then(function (item) {
+        item.name.should.equal('TestClassExtended');
+        item.should.have.property('superClass', 'V');
+        item.should.be.an.instanceOf(Class);
+      });
+    });
+  });
+
+  describe('Db::class.update()', function () {
+    it('should update a class with the given superClass', function () {
+      return this.db.class.update({
+        name: 'TestClass',
+        superClass: 'V'
+      })
+      .then(function (item) {
+        item.name.should.equal('TestClass');
+        item.should.have.property('superClass', 'V');
         item.should.be.an.instanceOf(Class);
       });
     });
@@ -44,7 +67,6 @@ describe("Database API - Class", function () {
     });
   });
 
-
   describe('Instance functions', function () {
     before(function () {
       return this.db.class.get('OUser')