ClearCustomUserTextField.java

//This code toggles Custom Text field value on a User from empty to current milliseconds, and from a non-empty value to empty

import java.io.IOException;
import java.net.URI;
import java.net.URISyntaxException;


import com.google.gson.JsonArray;
import com.google.gson.JsonElement;
import com.google.gson.JsonObject;
import com.rallydev.rest.RallyRestApi;
import com.rallydev.rest.util.Fetch;

import com.rallydev.rest.request.QueryRequest;
import com.rallydev.rest.request.UpdateRequest;
import com.rallydev.rest.response.UpdateResponse;
import com.rallydev.rest.response.QueryResponse;
import com.rallydev.rest.util.QueryFilter;
import java.util.Date;


public class ClearCustomUserTextField{
 public static void main(String[] args) throws URISyntaxException, IOException {


 String host = "https://rally1.rallydev.com";
 String apiKey = "_abc123"; //use your ApiKey
 String applicationName = "ClearCustomUserTextField";


 RallyRestApi restApi = new RallyRestApi(new URI(host),apiKey);
 restApi.setApplicationName(applicationName);

 try {
 QueryRequest userRequest = new QueryRequest("User");
 userRequest.setFetch(new Fetch("UserName", "DisplayName", "c_Comments"));
 userRequest.setQueryFilter(new QueryFilter("UserName", "=", "nick@denver.com"));
 QueryResponse userQueryResponse = restApi.query(userRequest);
 JsonArray userQueryResults = userQueryResponse.getResults();
 JsonElement userQueryElement = userQueryResults.get(0);
 JsonObject userObject = userQueryElement.getAsJsonObject();
 String userRef = userObject.get("_ref").getAsString();
 System.out.println(userObject.get("UserName") + " Comments field value: " + userObject.get("c_Comments"));
 if(userObject.get("c_Comments").isJsonNull()){
 String newComment = new Date().getTime()+""; //converting long to string
 System.out.println("Comments field is empty. Updating to: " + newComment);
 update(restApi, userRef, newComment);
 }
 else{
 System.out.println("not empty");
 System.out.println("Comments field is not empty. Clearing the value...");
 update(restApi, userRef, "");
 }
 } finally {
 //Release all resources
 restApi.close();
 }

 }
 private static void update(RallyRestApi restApi, String userRef, String comment ) throws URISyntaxException,IOException {
 JsonObject userUpdate = new JsonObject();
 userUpdate.addProperty("c_Comments", comment);
 UpdateRequest updateRequest = new UpdateRequest(userRef,userUpdate);
 UpdateResponse updateResponse = restApi.update(updateRequest);

 if (updateResponse.wasSuccessful()) {
 System.out.println("Successfully updated user");
 } else {
 System.out.println("Error occurred attempting to update user");
 String[] errorList;
 errorList = updateResponse.getErrors();
 for (int e=0;e<errorList.length;e++) {
 System.out.println(errorList[e]);
 }
 }
 }

}