My first pull request :)

pom.xml

@@ -41,6 +41,15 @@
 				<role>developer</role>
 			</roles>
 		</developer>
+		<developer>
+			<id>mario-fuentes</id>
+			<email>mario@gnome.cl</email>
+			<name>Mario Fuentes</name>
+			<timezone>-4</timezone>
+			<roles>
+				<role>developer</role>
+			</roles>
+		</developer>
 	</developers>
 
 	<url>http://sourceforge.net/projects/testlinkjavaapi</url>

src/main/java/br/eti/kinoshita/testlinkjavaapi/BaseService.java

@@ -103,7 +103,7 @@ protected void checkResponseError( Object response )
 	{
 		if ( response instanceof Object[] ) // may be an array of errors (IXError)
 		{
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 
 			for (int i = 0; i < responseArray.length; i++)
 			{

src/main/java/br/eti/kinoshita/testlinkjavaapi/BuildService.java

@@ -51,7 +51,7 @@ protected Build createBuild(Integer testPlanId, String buildName, String buildNo
 			Map<String, Object> executionData = Util.getBuildMap(build);
 			Object response = this.executeXmlRpcCall(
 					TestLinkMethods.createBuild.toString(), executionData);
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 
 			id = Util.getInteger(responseMap, TestLinkResponseParams.id.toString());
@@ -84,7 +84,7 @@ protected Build[] getBuildsForTestPlan( Integer testPlanId )
 					TestLinkMethods.getBuildsForTestPlan.toString(), executionData);
 			if ( response instanceof Object[])
 			{
-				Object[] responseArray = (Object[])response;
+				Object[] responseArray = Util.castToArray(response);
 				builds = new Build[ responseArray.length ];
 				for (int i = 0; i < responseArray.length; i++)
 				{

src/main/java/br/eti/kinoshita/testlinkjavaapi/MiscService.java

@@ -333,7 +333,7 @@ protected Execution getLastExecutionResult(
 			executionData.put( TestLinkParams.testCaseExternalId.toString(), testCaseExternalId );
 			Object response = this.executeXmlRpcCall(
 					TestLinkMethods.getLastExecutionResult.toString(), executionData);
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 			if ( responseMap instanceof Map<?, ?> && responseMap.size() > 0  )
 			{

src/main/java/br/eti/kinoshita/testlinkjavaapi/TestCaseService.java

@@ -20,6 +20,7 @@
 import br.eti.kinoshita.testlinkjavaapi.model.ResponseDetails;
 import br.eti.kinoshita.testlinkjavaapi.model.TestCase;
 import br.eti.kinoshita.testlinkjavaapi.model.TestCaseStep;
+import br.eti.kinoshita.testlinkjavaapi.model.TestCaseStepAction;
 import br.eti.kinoshita.testlinkjavaapi.model.TestImportance;
 import br.eti.kinoshita.testlinkjavaapi.model.TestLinkMethods;
 import br.eti.kinoshita.testlinkjavaapi.model.TestLinkParams;
@@ -121,7 +122,7 @@ protected TestCase createTestCase(
 			Map<String, Object> executionData = Util.getTestCaseMap(testCase);
 			Object response = this.executeXmlRpcCall(
 					TestLinkMethods.createTestCase.toString(), executionData);
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 
 			id = Util.getInteger(responseMap, TestLinkResponseParams.id.toString());
@@ -135,6 +136,74 @@ protected TestCase createTestCase(
 
 		return testCase;
 	}
+
+	@SuppressWarnings("unchecked")
+	public Map<String, Object> createTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		TestCaseStepAction action,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		Map<String, Object> responseMap = null;
+
+		try
+		{
+			Map<String, Object> executionData = new HashMap<String, Object>();
+
+			executionData.put(TestLinkParams.testCaseExternalId.toString(), testCaseExternalId);
+			executionData.put(TestLinkParams.version.toString(), version);
+			executionData.put(TestLinkParams.action.toString(), action.toString());
+
+			List<Map<String, Object>> steps = Util.getTestCaseStepsMap(testCaseSteps);
+			executionData.put(TestLinkParams.steps.toString(), steps);
+
+			Object response = this.executeXmlRpcCall(
+					TestLinkMethods.createTestCaseSteps.toString(), executionData);
+			responseMap = (Map<String, Object>) response;
+		} 
+		catch ( XmlRpcException xmlrpcex )
+		{
+			throw new TestLinkAPIException(
+					"Error adding steps to test case: " + xmlrpcex.getMessage(), xmlrpcex);
+		}
+
+		return responseMap;
+	}
+
+	@SuppressWarnings("unchecked")
+	public Map<String, Object> deleteTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		Map<String, Object> responseMap = null;
+
+		try
+		{
+			Map<String, Object> executionData = new HashMap<String, Object>();
+
+			executionData.put(TestLinkParams.testCaseExternalId.toString(), testCaseExternalId);
+			executionData.put(TestLinkParams.version.toString(), version);
+
+			List<Integer> steps = Util.getTestCaseStepsIdList(testCaseSteps);
+			executionData.put(TestLinkParams.steps.toString(), steps);
+
+			Object response = this.executeXmlRpcCall(
+					TestLinkMethods.deleteTestCaseSteps.toString(), executionData);
+			responseMap = (Map<String, Object>) response;
+		} 
+		catch ( XmlRpcException xmlrpcex )
+		{
+			throw new TestLinkAPIException(
+					"Error deleting steps from test case: " + xmlrpcex.getMessage(), xmlrpcex);
+		}
+
+		return responseMap;
+	}
 
 	@SuppressWarnings("unchecked")
 	protected Integer addTestCaseToTestPlan(
@@ -201,7 +270,7 @@ protected TestCase[] getTestCasesForTestSuite(
 			executionData.put(TestLinkParams.details.toString(), details);
 			Object response = this.executeXmlRpcCall(
 					TestLinkMethods.getTestCasesForTestSuite.toString(), executionData);
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 
 			testCases = new TestCase[ responseArray.length ];
 
@@ -312,7 +381,6 @@ else if(entry.getValue() instanceof  Map<?, ?>)
 		return testCases;
 	}
 
-
 	/**
 	 * 
 	 * @param testCaseId
@@ -339,7 +407,7 @@ protected TestCase getTestCase(Integer testCaseId,
 
 			Object response = this.executeXmlRpcCall( TestLinkMethods.getTestCase.toString(), executionData );
 
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 
 			testCase = Util.getTestCase( responseMap );
@@ -352,6 +420,42 @@ protected TestCase getTestCase(Integer testCaseId,
 		return testCase;
 	}
 
+	/**
+	 * 
+	 * @param fullTestCaseExternalId Full external id: prefix-externalId
+	 * @param version
+	 * @return
+	 * @throws TestLinkAPIException
+	 */
+	@SuppressWarnings("unchecked")
+	protected TestCase getTestCaseByExternalId( 
+								   String fullTestCaseExternalId, 
+								   Integer version) 
+	throws TestLinkAPIException
+	{
+		TestCase testCase = null;
+
+		try 
+		{
+			Map<String, Object> executionData = new HashMap<String, Object>();
+
+			executionData.put(TestLinkParams.testCaseExternalId.toString(), fullTestCaseExternalId);
+			executionData.put(TestLinkParams.version.toString(), version);
+
+			Object response = this.executeXmlRpcCall( TestLinkMethods.getTestCase.toString(), executionData );
+
+			Object[] responseArray = Util.castToArray(response);
+			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
+
+			testCase = Util.getTestCase( responseMap );
+		}
+		catch ( XmlRpcException xmlrpcex )
+		{
+			throw new TestLinkAPIException( "Error getting test case info : " + xmlrpcex.getMessage(), xmlrpcex );
+		}
+
+		return testCase;
+	}
 
 	/**
 	 * 
@@ -385,7 +489,7 @@ protected Integer getTestCaseIDByName(
 			Object response = this.executeXmlRpcCall(
 					TestLinkMethods.getTestCaseIDByName.toString(), executionData);
 
-			Object[] responseArray = (Object[])response;
+			Object[] responseArray = Util.castToArray(response);
 			Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 
 			testCaseID = Util.getInteger(responseMap, TestLinkResponseParams.id.toString());
@@ -636,7 +740,7 @@ protected ReportTCResultResponse reportTCResult(
 			// the error verification routine is called inside super.executeXml...
 			if ( response instanceof Object[] )
 			{
-				Object[] responseArray = (Object[])response;
+				Object[] responseArray = Util.castToArray(response);
 				Map<String, Object> responseMap = (Map<String, Object>)responseArray[0];
 
 				reportTCResultResponse = Util.getReportTCResultResponse( responseMap );

src/main/java/br/eti/kinoshita/testlinkjavaapi/TestLinkAPI.java

@@ -51,6 +51,7 @@
 import br.eti.kinoshita.testlinkjavaapi.model.ResponseDetails;
 import br.eti.kinoshita.testlinkjavaapi.model.TestCase;
 import br.eti.kinoshita.testlinkjavaapi.model.TestCaseStep;
+import br.eti.kinoshita.testlinkjavaapi.model.TestCaseStepAction;
 import br.eti.kinoshita.testlinkjavaapi.model.TestImportance;
 import br.eti.kinoshita.testlinkjavaapi.model.TestPlan;
 import br.eti.kinoshita.testlinkjavaapi.model.TestProject;
@@ -862,6 +863,133 @@ public TestCase createTestCase(
 		);
 	}
 
+	/**
+	 * Create, Update or Push a list of TestCaseSteps in a Test Case.
+	 * 
+	 * @param testCaseExternalId
+	 * @param version
+	 * @param testCaseSteps
+	 * @return a Map with results.
+	 * @throws TestLinkAPIException
+	 */
+	public Map<String, Object> createTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		TestCaseStepAction action,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		return this.testCaseService.createTestCaseSteps(
+			testCaseExternalId,
+			version,
+			TestCaseStepAction.Create,
+			testCaseSteps
+		);
+	}
+
+	/**
+	 * Add a list of TestCaseSteps in a Test Case.
+	 * A convenient method to add steps, internally call to the
+	 * {@link #createTestCaseSteps(Integer, Integer, TestCaseStepAction, List)} method with 'Create' action.
+	 * 
+	 * @param testCaseExternalId
+	 * @param version
+	 * @param testCaseSteps
+	 * @return a Map with results.
+	 * @throws TestLinkAPIException
+	 */
+	public Map<String, Object> addTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		return createTestCaseSteps(
+			testCaseExternalId,
+			version,
+			TestCaseStepAction.Create,
+			testCaseSteps
+		);
+	}
+
+	/**
+	 * Update (override) a list of TestCaseSteps in a Test Case.
+	 * A convenient method to update steps, internally call to the
+	 * {@link #createTestCaseSteps(Integer, Integer, TestCaseStepAction, List)} method with 'Update' action.
+	 * 
+	 * @param testCaseExternalId
+	 * @param version
+	 * @param testCaseSteps
+	 * @return a Map with results.
+	 * @throws TestLinkAPIException
+	 */
+	public Map<String, Object> updateTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		return createTestCaseSteps(
+			testCaseExternalId,
+			version,
+			TestCaseStepAction.Update,
+			testCaseSteps
+		);
+	}
+
+	/**
+	 * Push (insert and move down previous steps) a list of
+	 * TestCaseSteps in a TestCase.
+	 * A convenient method to push steps, internally call to the
+	 * {@link #createTestCaseSteps(Integer, Integer, TestCaseStepAction, List)} method with 'Push' action.
+	 * 
+	 * @param testCaseExternalId
+	 * @param version
+	 * @param testCaseSteps
+	 * @return a Map with results.
+	 * @throws TestLinkAPIException
+	 */
+	public Map<String, Object> pushTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		return createTestCaseSteps(
+			testCaseExternalId,
+			version,
+			TestCaseStepAction.Push,
+			testCaseSteps
+		);
+	}
+
+	/**
+	 * Delete a list if TestCaseSteps from a Test Case.
+	 * 
+	 * @param testCaseExternalId
+	 * @param version
+	 * @param testCaseSteps
+	 * @return a Map with results.
+	 * @throws TestLinkAPIException
+	 */
+	public Map<String, Object> deleteTestCaseSteps(
+		String testCaseExternalId,
+		Integer version,
+		List<TestCaseStep> testCaseSteps
+	)
+	throws TestLinkAPIException
+	{
+		return this.testCaseService.deleteTestCaseSteps(
+			testCaseExternalId,
+			version,
+			testCaseSteps
+		);
+	}
+
 	/**
 	 * Adds a Test Case to a Test Plan.
 	 * @param testProjectId
@@ -933,6 +1061,24 @@ public TestCase getTestCase(
 		return this.testCaseService.getTestCase(testCaseId, testCaseExternalId, version);
 	}
 
+	/**
+	 * Get a Test Case using the full external id, composed by the prefix and
+	 * the external id: prefix-externalId
+	 * 
+	 * @param fullTestCaseExternalId Full external id: prefix-externalId
+	 * @param version
+	 * @return Test Case.
+	 * @throws TestLinkAPIException
+	 */
+	public TestCase getTestCaseByExternalId(
+			String fullTestCaseExternalId, 
+			Integer version
+	) 
+	throws TestLinkAPIException
+	{
+		return this.testCaseService.getTestCaseByExternalId(fullTestCaseExternalId, version);
+	}
+
 	/**
 	 * Retrieves Test Cases for Test Plans.
 	 *