I'm currently trying to migrate an EAR Project
-The old Project-
EJB 2.0
Jboss 5.0.1
-New Project-
EJB 3.0
Wildfly 13.0.0Final
Its session beans which I have managed to create and I can call upon it. the logic in it self seems to work. The issues I'm having is one of the follow ups seems to forget what it was doing.
the current issue I'm seeing is the following:
In the Web application in an class we are creating an object of Another class which we then trigger its parent method. this parent method then calls upon a class with it self as an argument which then checks which type it is and then stars a session bean depending on what type. which then calls on the arguments function performExecute() in this function we call upon a Query and actually get the correct results, we then add the resultsets values to a private dto member. and then performExecute is done. and we are back at the web applications class and we then try to access the same dto member with a get function. this returns a nullpointer. I'm wondering if I've forgotten something in my session beans?
Old sessionbean:
public class TxNotSupportedCommandServerBean implements SessionBean {
SessionContext sessionContext;
public void ejbCreate() throws CreateException {}
public void ejbRemove() {
sessionContext = null;
}
public void ejbActivate() {}
public void ejbPassivate() {}
public void setSessionContext(SessionContext sessionContext) {
this.sessionContext = sessionContext;
}
public void executeCommand(TargetableCommand cmd) throws CommandException {
try {
cmd.performExecute();
}
catch (CommandException ex) {
throw ex;
}
}
}
The new one:
#Stateless
#Remote
#TransactionManagement(value=TransactionManagementType.CONTAINER)
#TransactionAttribute(value=REQUIRED)
public class TxNotSupportedCmdServerBean implements TxNotSupportedCmdServerRemote{
/**
* Default constructor.
*/
public TxNotSupportedCmdServerBean() {
// TODO Auto-generated constructor stub
}
public void executeCommand(TargetableCommand cmd) throws CommandException {
try {
cmd.performExecute();
}
catch (CommandException ex) {
throw ex;
}
}
}
Both these are in the EJB.Jar
the interface is implemented in the EJBClient.jar
The old Interface:
public interface TxNotSupportedCommandServerLocal extends EJBLocalObject {
public void executeCommand(TargetableCommand cmd) throws CommandException;
}
The new Interface:
public interface TxNotSupportedCmdServerRemote {
public void executeCommand(TargetableCommand cmd) throws CommandException;
}
Now here come s the next set of files that is also in the EJBClient.jar
TargetableCommand:
public abstract class TargetableCommand implements Command {
private boolean constraintViolated;
protected RequestContext requestContext;
protected String dataSourceName;
public TargetableCommand(RequestContext requestContext, String dataSourceName) {
this.requestContext = requestContext;
this.dataSourceName = dataSourceName;
}
public TargetableCommand(RequestContext requestContext) {
this.requestContext = requestContext;
}
public TargetableCommand(String dataSourceName) {
this.dataSourceName = dataSourceName;
}
public TargetableCommand() {
}
public void setConstraintViolated(boolean constraintViolated) {
this.constraintViolated = constraintViolated;
}
public boolean isConstraintViolated() {
return constraintViolated;
}
public abstract void performExecute() throws CommandException;
public void execute() throws CommandException {
CommandTarget.executeCommand(this);
}
}
Command:
public interface Command extends Serializable {
public void execute() throws CommandException;
}
The commented code is the old session beans.
CommandTarget:
public class CommandTarget {
public CommandTarget() {
}
/**
* Exekverar ett kommando i rätt miljö, t.ex. med eller utan transaktionshantering
* #param cmd TargetableCommand Kommandot som ska utföras
* #throws CommandException
*/
public static void executeCommand(TargetableCommand cmd) throws CommandException {
Context context = null;
try {
ServiceLocator sl = ServiceLocator.getInstance();
// if (cmd instanceof TxRequired) {
// TxRequiredCommandServerLocalHome cmdSrvHome = (TxRequiredCommandServerLocalHome) sl.getEJBLocalHome("TxRequiredCommandServer");
// TxRequiredCommandServerLocal cmdSrv = cmdSrvHome.create();
// cmdSrv.executeCommand(cmd);
// }
// else if(cmd instanceof TxNotSupported) {
// TxNotSupportedCommandServerLocalHome cmdSrvHome = (TxNotSupportedCommandServerLocalHome) sl.getEJBLocalHome("TxNotSupportedCommandServer");
// TxNotSupportedCommandServerLocal cmdSrv = cmdSrvHome.create();
// cmdSrv.executeCommand(cmd);
// }
// else {
// throw new CommandException("Cannot instanciate command server");
// }
//
System.out.println("CT: Inside commandTarget. about to diffrientate what instance");
context = JNDILookupClass.getInitialContext();
if (cmd instanceof TxRequired) {
System.out.println("CT: TxRequired");
TxRequiredCmdServerRemote cmdSrv = (TxRequiredCmdServerRemote)context.lookup(JNDILookupClass.getLookupName("TxRequiredCmdServerRemoteBean", TxRequiredCmdServerRemote.class.getName()));
cmdSrv.executeCommand(cmd);
}
else if(cmd instanceof TxNotSupported) {
System.out.println("CT: TxNotSupported");
System.out.println("CT: cmd: " + cmd.getClass());
TxNotSupportedCmdServerRemote cmdSrv = (TxNotSupportedCmdServerRemote)context.lookup(JNDILookupClass.getLookupName("TxNotSupportedCmdServerBean", TxNotSupportedCmdServerRemote.class.getName()));
cmdSrv.executeCommand(cmd);
}
else {
throw new CommandException("Cannot instanciate command server");
}
}
catch (CommandException ex) {
throw ex;
}
// catch (CreateException ex) {
// throw new CommandException(ex);
// }
//new catch
catch(NamingException ex) {
throw new CommandException(ex);
}
catch (ServiceLocatorException ex) {
throw new CommandException(ex);
}
}
}
Phew ...
Ok now that's the important parts from EJBClient. now onwards to the Web.war
I'm only pasting the part that actually runs and were it returns a nullpoint
public class ActionIdentitetKonsultCommand implements Command {
private static Logger logger = Logger.getLogger(ActionIdentitetKonsultCommand.class);
public ActionIdentitetKonsultCommand() {
}
public String execute(RequestContext requestContext) throws CommandException {
GetPersonByPersnrEJBCommand personCmd;
logger.info("execute()");
try {
UserBean user = (UserBean) requestContext.getSession().getAttribute("user");
String kstnr = requestContext.getParameter("kstnr");
//Tilldela konsultuppgifter
personCmd = new GetPersonByPersnrEJBCommand();
personCmd.setPersnr(user.getPersnr());
System.out.println("AI: Before execute DTO " + personCmd.dto);
personCmd.execute();
System.out.println("AI: After execute DTO " + personCmd.dto);
logger.info("person hamtad med personnummer (EJB):");
logger.info(personCmd.getPerson().toString());
So the personCmd.getPerson().tostring() is what causes the nullpointer. GetPersonByPersnrEJBCommand():
public class GetPersonByPersnrEJBCommand extends TargetableCommand implements TxNotSupported {
public PersonDTO dto;
private long persnr;
public GetPersonByPersnrEJBCommand() {
}
public void setPersnr(long persnr) {
this.persnr = persnr;
}
public PersonDTO getPerson() {
return this.dto;
}
public void performExecute() throws CommandException {
try {
QueryPersonByPersnrCommand cmd = new QueryPersonByPersnrCommand();
cmd.setPersnr(persnr);
cmd.execute();
if(cmd.next()){
this.dto = new PersonDTO();
System.out.println("GP: inside PerformExecute DTO: " + dto);
dto.setPersnr(cmd.getPersnr());
dto.setEfternamn(cmd.getEfternamn());
dto.setFornamn(cmd.getFornamn());
dto.setEpostAdress(cmd.getEpostAdress());
dto.setKonsult((cmd.getKonsult() == 1));
dto.setAnsvarig((cmd.getAnsvarig() == 1));
System.out.println("GP: Inside Perform Execute DTO: " + dto);
}
}
catch (DataAccessCommandException ex) {
System.out.println("GetPersonByPersnrEJBCommand.performExecute misslyckades " + ex.getMessage());
throw new CommandException(ex);
}
}
}
So that's it; I don't understand why it forgets it. when we do sysouts inside the last class we see that both the dto and the cmd has data in them, but once the function ends and we are back in the class that called on this the data is empty.
I'm suspecting its something to do with my session beans, I'm missing an property or something. because this code works with the old beans in the old JBOSS server. Hopefully someone can help me and others can learn from this as well as me.
I managed to solve this issue. Since the scope of the project is to get this to work. Its not a beautiful solution and with more time rewriting this would have been better. so onwards to the solution:
We need to change in both the bean, targetableCommand, CommandTarget and in the GetPersonByPersnrEJBCommand
TargetableCommand - add method:
public TargetableCommand execute(TargetableCommand cmd) throws CommandException
{
return CommandTarget.executeCommand(cmd);
}
CommandTarget - We change the method executeCommand to return a TargetableCommand, and make sure that after the bean is done we return that cmd.
public static TargetableCommand executeCommand(TargetableCommand cmd) throws CommandException {
Context context = null;
try {
context = JNDILookupClass.getInitialContext();
if (cmd instanceof TxRequired) {
TxRequiredCmdServerRemote cmdSrv = (TxRequiredCmdServerRemote)context.lookup(JNDILookupClass.getLookupName("TxRequiredCmdServerRemoteBean", TxRequiredCmdServerRemote.class.getName()));
cmd = cmdSrv.executeCommand(cmd);
}
else if(cmd instanceof TxNotSupported) {
TxNotSupportedCmdServerRemote cmdSrv = (TxNotSupportedCmdServerRemote)context.lookup(JNDILookupClass.getLookupName("TxNotSupportedCmdServerBean", TxNotSupportedCmdServerRemote.class.getName()));
cmd = cmdSrv.executeCommand(cmd);
}
else {
throw new CommandException("Cannot instanciate command server");
}
}
catch (CommandException ex) {
throw ex;
}
catch(NamingException ex) {
throw new CommandException(ex);
}
}
return cmd;
}
The bean - cange the method Execute command to return Targetablecommand
public TargetableCommand executeCommand(TargetableCommand cmd) throws CommandException {
try {
cmd = cmd.performExecute();
}
catch (CommandException ex) {
throw ex;
}
return cmd;
}
Then lastly to get it all to work I had to create a new method in the classes that needed to do the perform execute so in the GetPersonByPersnrEJBCommand class i created the method wf13Layer(); wich is a just an extra step:
public void wf13Layer() throws CommandException
{
GetPersonByPersnrEJBCommand tmp;
try{
tmp = (GetPersonByPersnrEJBCommand) execute(this);
dto = tmp.getPerson();
} catch (Exception ex) {
throw new CommandException(ex);
}
}
This is what i did to make it work. as i said its not a beautiful solution but it works. IT seems to be a combination that once we cross between the projects the scope vanishes. and to obtain it futher we need to layer it like this. I really hope this helps someone at some point since theres till alot of old code running around out there.
Kind regards
VeryTired
Related
Here mentioned code successfully passed by the test run.But it was not showed the login button click and the logged-user name.(I have try to print the messages by try-catch ).but result shows as passed without those messages.
I just wanted to why can't I see the button click and assertEqual messages?
is there any coding issue or practice should be able to use to overcome this?
I have used the xml file to send the browser type.Further,I pasted only the relevant code sections.
1.TestCommands.java
public class TestCommands {
public void assertText(By locator,WebDriver driver,String expectedValue){
try {
WebElement element = driver.findElement(locator);
assertEquals(element.getText(), expectedValue);
} catch (Exception e) {
// TODO: handle exception
e.printStackTrace();
System.out.println("Not equal");
}
System.out.println("Equal");
System.out.println("captured web element: "+ locator);
System.out.println("captured expectedValue: "+ expectedValue);
}
}
2.LoginPage.java
public class LoginPage extends TestCommands{
public void loginToApplication(WebDriver driver,String userName,String password,String loggedUser){
type(userName(),driver,userName);
type(password(),driver,password);
click(loginButton(),driver);
selectByVisibleText(loggedUser(),driver,loggedUser);
}
3.TC_LoginToTest.java
public class TC_LoginToTest {
WebDriver driver ;
String baseUrl;
LoginPage login = new LoginPage();
#Parameters("browser")
#BeforeMethod
public void beforeMethod(String browser) {
if (browser.equals("firefox")) {
System.setProperty("webdriver.gecko.driver", "drivers\\geckodriver.exe");
driver = new FirefoxDriver();
//baseUrl = "https://test.com";
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
} else if (browser.equals("chrome")) {
System.setProperty("webdriver.chrome.driver", "drivers\\chromedriver.exe");
driver = new ChromeDriver();
//baseUrl = "https://test.com";
driver.manage().timeouts().implicitlyWait(30, TimeUnit.SECONDS);
driver.manage().window().maximize();
}
}
#DataProvider
public Object[][] tc001() {
return new Object[][] {
new Object[] {"nadee","12345678","Testnadee"},
};
}
#Test(dataProvider="tc001")
public void tc001(String userName , String password ,String loggedUser) {
login.openApplication("https://test.com", driver);
login.loginToApplication(driver, userName, password, loggedUser);
}
}
I have code snippet below.
What I want is if getNames() method catch an exception
( ex. InterruptedException ),
want to check if Got InterruptedException !!! prints out or not.
There are some examples of testing exception for a method
which throws an exception in its method ( ex. String method1() throws InterruptedException {...} ) in the Internet.
But not this case. Does anyone have some thought or idea?
public class A {
public List<String> getNames()
{
String addess = "address1";
int age = 17;
List<String> names = null;
try {
names = getSomeNames(address, sex);
}
catch (InterruptedException | ExecutionException e) {
throw new MyCustomException(e);
}
catch(Exception e) {
throw new MyCustomException(e);
}
return names;
}
List<String> getSomeNames(String address, int sex) throws InterruptedException, ExecutionException
{
// ...
// throw exceptions... at some point
//
return names;
}
}
public class MyCustomException extends Exception {
public MyCustomException(Throwable e) {
if (e.getCause() instanceof InterruptedException) {
// write log
System.out.println("Got InterruptedException !!!");
}
else if (e.getCause() instanceof ExecutionException) {
// write log
System.out.println("Got ExecutionException!!!");
}
else {
// write log
}
}
}
I tried this but the test failed and got NullPointerException in catch block.
#Test
public void testException() {
A objA = spy(new A());
try {
doThrow(MyCustomException.class).when(objA).getNames();
objA.getNnames();
}
catch (Exception e) {
System.out.println(e.getCause().toString()); // ==> throws java.lang.NullPointerException here.
}
}
There are several ways to test it.
First solution is to replace System.out with different stream and read from it later. ( I don't like this approach )
#Test
void whenSayHi_thenPrintlnCalled() throws IOException {
PrintStream normalOutput = System.out;
String result;
try (ByteArrayOutputStream baos = new ByteArrayOutputStream(); PrintStream temporalOutput = new PrintStream(baos)) {
System.setOut(temporalOutput);
ThatGuy thatGuy = new ThatGuy();
thatGuy.sayHi();
result = new String(baos.toByteArray(), StandardCharsets.UTF_8);
} finally {
System.setOut(normalOutput);
}
assertEquals("Hi", result.trim());
}
Second one is to use logger instead of just System.out. I consider this approach better not only from testing, but from code design perspective as well. Using this one you can just replace logger with Mockito.mock and user Mockito.verify to check what was called on your logger.
#Test
void whenSayHi_thenCallLogger() {
Logger logger = Mockito.mock(Logger.class);
ThatGuy thatGuy = new ThatGuy();
ReflectionTestUtils.setField(thatGuy, "logger", logger);
thatGuy.sayHiToLog();
verify(logger).error("Hi");
}
Class under testing looks like this:
class ThatGuy {
private static Logger logger = LoggerFactory.getLogger(ThatGuy.class);
void sayHi() {
System.out.println("Hi");
}
void sayHiToLog() {
logger.error("Hi");
}
}
I am currently facing following big problem:
I have a Framework-Project (maven), where a PropertyReader is included (reads "config.properties" in the same package and returns its values):
This is the Framework-Project:
public class PropertyReaderFramework {
private static Properties props;
private static void init(){
String filename = "com/ks/framework/properties/config.properties";
InputStream input = PropertyReaderFramework.class.getClassLoader()
.getResourceAsStream(filename);
if (input == null) {
System.out.println("Sorry, unable to find " + filename);
props = null;
} else {
props = new Properties();
}
try {
props.load(input);
} catch (IOException e) {
e.printStackTrace();
}
}
public static String getProperty(String key){
if(props == null) init();
return props.getProperty(key);
}
public static Properties getProperties(){
if(props == null) init();
return props;
}
}
And my main-project, where I need the information of the properties-file just has one class (for demonstation):
package testmsg;
import com.ks.framework.properties.PropertyReaderFramework;
public class main {
public static void main(String[] args) throws InterruptedException {
try {
String basepath = PropertyReaderFramework.getProperty("remoteFileAccess.script.location");
System.out.println(basepath);
} catch (Exception e) {
e.printStackTrace();
} finally {
Thread.sleep(5000);
}
}
}
The funny thing is, that if I execute the main() class in eclipse, it reads the value from the properties correctly.
But when I export it as a runnable JAR, it throws me following error:
Can anyone help me to solve this problem? I cannot figure out why it behaves like that...
I am using Error collector rule in my application( selenium web driver). I am able to thrown exception and continue next line of code with help of error collector rule. But right now i want to re run failed test again ( 3 times) to ensure they are really failed. hence i am using Retry rule. But this rule when applied individually it get executed ( Retry rule with Assert command) `but when written with error collector is doesn't get executed any reason....
Please help me with sample code.
TestBase.java:
public class TestBase {
#Rule
public ErrorCollector collector = new ErrorCollector();
private boolean fatal;
public TestBase() {
fatal=true;
}
public void assertEquals( String msg, Object expected, Object actual) {
if(getFatal()) {
Assert.assertEquals(msg,expected, actual);
} else {
collector.checkThat(msg, actual, CoreMatchers.is(expected));
}
}
public void setFatal(boolean fatalFlag) {
fatal = fatalFlag;
}
public boolean getFatal() {
return fatal;
}
}
BFMNew.java
public class BFMNew extends TestBase {
#Rule
public Retry retry = new Retry(3);
#Rule
public ErrorCollector errocol = new ErrorCollector();
#Before
public void setUp() throws Exception {
System.out.println(" in before");
}
// ===========Re run fail test custom====
public class Retry implements TestRule {
private int retryCount;
public Retry(int retryCount) {
this.retryCount = retryCount;
}
public Statement apply(Statement base, Description description) {
return statement(base, description);
}
private Statement statement(final Statement base,
final Description description) {
return new Statement() {
#Override
public void evaluate() throws Throwable {
Throwable caughtThrowable = null;
// implement retry logic here
for (int i = 0; i < retryCount; i++) {
try {
base.evaluate();
return;
} catch (Throwable t) {
caughtThrowable = t;
System.err.println(description.getDisplayName()
+ ": run " + (i + 1) + " failed");
}
}
System.err.println(description.getDisplayName()
+ ": giving up after " + retryCount + " failures");
throw caughtThrowable;
}
};
}
}
#Test
public void one() {
setFatal(false);
Boolean IsLogin = true; //Here function will come for login
Boolean IsPost = null;
Boolean IsStnComment = null;
Boolean IsPhotoUpload = false;
if( IsLogin ) {
IsPost = false;
assertEquals("Failed to Insert Post", true, IsPost);
}
System.out.println(" After Post ");
assertEquals("Failed to upload photo", true, IsPhotoUpload);
if( IsPost ) {
IsStnComment = false;
//assertEquals("Failed to Insert Comment", true, IsStnComment);
}
System.out.println("After comment");
}
The problem is with rules ordering. You should make ErrorCollector to be outer rule and Retry inner rule. Starting from junit 4.10 use this
class YourTest {
private ErrorCollector collector = new ErrorCollector();
private Retry retry = Retry(3);
#Rule
public TestRule chain= RuleChain
.outerRule(collector)
.around(retry);
// tests using collector go here
}
I had an rcp application which runs for only first run, when a user attempts to re-execute the application, second instance behaves as a client which encodes and sends its arguments over the socket to the first instance which acts as a server and then exits silently. The first instance receives and decodes that message, then behaves as if it had been invoked with those arguments.
so far so good i made internal protocol specification for passing arguments between two instances.
I could not bring the first instance(RCP application) to front. It is in minimized state only,
this is in continuation to my previous question
the change i made to previous post is start method of application class
public Object start(IApplicationContext context) throws Exception {
if (!ApplicationInstanceManager.registerInstance()) {
return IApplication.EXIT_OK;
}
ApplicationInstanceManager
.setApplicationInstanceListener(new ApplicationInstanceListener() {
public void newInstanceCreated() {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
System.out.println("New instance detected...");
//Display.getCurrent().getActiveShell()
.forceActive();// this gives null
// pointer exception
// hence commented
}
});
}
});
Display display = PlatformUI.createDisplay();
try {
int returnCode = PlatformUI.createAndRunWorkbench(display,
new ApplicationWorkbenchAdvisor());
if (returnCode == PlatformUI.RETURN_RESTART)
return IApplication.EXIT_RESTART;
else
return IApplication.EXIT_OK;
} finally {
display.dispose();
}
}
below line is stopping me to bring Application to front
Display.getCurrent().getActiveShell().forceActive();
generates null pointer exception at getActiveShell()
how can i maximize the previous instance or bring it to front
I wrote an instance manager to restrict my RCP to a single instance.
Here's the code that goes in Application.java, in the start method:
if (!ApplicationInstanceManager.registerInstance()) {
return IApplication.EXIT_OK;
}
ApplicationInstanceManager
.setApplicationInstanceListener(new ApplicationInstanceListener() {
public void newInstanceCreated() {
Display.getDefault().asyncExec(new Runnable() {
public void run() {
if (DEBUG)
System.out.println("New instance detected...");
Display.getCurrent().getActiveShell().forceActive();
}
});
}
});
Here's the listener interface:
public interface ApplicationInstanceListener {
public void newInstanceCreated();
}
And here's the Manager class:
public class ApplicationInstanceManager {
private static final boolean DEBUG = true;
private static ApplicationInstanceListener subListener;
/** Randomly chosen, but static, high socket number */
public static final int SINGLE_INSTANCE_NETWORK_SOCKET = 44331;
/** Must end with newline */
public static final String SINGLE_INSTANCE_SHARED_KEY = "$$RabidNewInstance$$\n";
/**
* Registers this instance of the application.
*
* #return true if first instance, false if not.
*/
public static boolean registerInstance() {
// returnValueOnError should be true if lenient (allows app to run on
// network error) or false if strict.
boolean returnValueOnError = true;
// try to open network socket
// if success, listen to socket for new instance message, return true
// if unable to open, connect to existing and send new instance message,
// return false
try {
final ServerSocket socket = new ServerSocket(
SINGLE_INSTANCE_NETWORK_SOCKET, 10, InetAddress
.getLocalHost());
if (DEBUG)
System.out
.println("Listening for application instances on socket "
+ SINGLE_INSTANCE_NETWORK_SOCKET);
Thread instanceListenerThread = new InstanceListenerThread(socket);
instanceListenerThread.start();
// listen
} catch (UnknownHostException e) {
EclipseLogging.logError(RabidPlugin.getDefault(),
RabidPlugin.PLUGIN_ID, e);
return returnValueOnError;
} catch (IOException e) {
return portTaken(returnValueOnError, e);
}
return true;
}
private static boolean portTaken(boolean returnValueOnError, IOException e) {
if (DEBUG)
System.out.println("Port is already taken. "
+ "Notifying first instance.");
try {
Socket clientSocket = new Socket(InetAddress.getLocalHost(),
SINGLE_INSTANCE_NETWORK_SOCKET);
OutputStream out = clientSocket.getOutputStream();
out.write(SINGLE_INSTANCE_SHARED_KEY.getBytes());
out.close();
clientSocket.close();
System.out.println("Successfully notified first instance.");
return false;
} catch (UnknownHostException e1) {
EclipseLogging.logError(RabidPlugin.getDefault(),
RabidPlugin.PLUGIN_ID, e);
return returnValueOnError;
} catch (IOException e1) {
EclipseLogging
.logError(
RabidPlugin.getDefault(),
RabidPlugin.PLUGIN_ID,
"Error connecting to local port for single instance notification",
e);
return returnValueOnError;
}
}
public static void setApplicationInstanceListener(
ApplicationInstanceListener listener) {
subListener = listener;
}
private static void fireNewInstance() {
if (subListener != null) {
subListener.newInstanceCreated();
}
}
public static void main(String[] args) {
if (!ApplicationInstanceManager.registerInstance()) {
// instance already running.
System.out.println("Another instance of this application "
+ "is already running. Exiting.");
System.exit(0);
}
ApplicationInstanceManager
.setApplicationInstanceListener(new ApplicationInstanceListener() {
public void newInstanceCreated() {
System.out.println("New instance detected...");
// this is where your handler code goes...
}
});
}
public static class InstanceListenerThread extends Thread {
private ServerSocket socket;
public InstanceListenerThread(ServerSocket socket) {
this.socket = socket;
}
#Override
public void run() {
boolean socketClosed = false;
while (!socketClosed) {
if (socket.isClosed()) {
socketClosed = true;
} else {
try {
Socket client = socket.accept();
BufferedReader in = new BufferedReader(
new InputStreamReader(client.getInputStream()));
String message = in.readLine();
if (SINGLE_INSTANCE_SHARED_KEY.trim().equals(
message.trim())) {
if (DEBUG)
System.out.println("Shared key matched - "
+ "new application instance found");
fireNewInstance();
}
in.close();
client.close();
} catch (IOException e) {
socketClosed = true;
}
}
}
}
}
}
After your IApplication start up, you can also check and lock the OSGi instance location using org.eclipse.osgi.service.datalocation.Location.isSet() and org.eclipse.osgi.service.datalocation.Location.lock()
The location is usually retrieved from your Activator using code like:
public Location getInstanceLocation() {
if (locationTracker == null) {
Filter filter = null;
try {
filter = context.createFilter(Location.INSTANCE_FILTER);
} catch (InvalidSyntaxException e) {
// ignore this. It should never happen as we have tested the
// above format.
}
locationTracker = new ServiceTracker(context, filter, null);
locationTracker.open();
}
return (Location) locationTracker.getService();
}