Java InvocationTargetException

Question

I have used EMC Documentum Foundation Classes to perform some actions in documentum repository. The code was working fine. I exported the project as a runnable JAR and then tried to run it. However I got following error and I am not able to understand it.

And here is the code for DocMovementHandler.getSession() Actually this is no new code but regular code for obtaining documentum session

public IDfSession getSession(String userName, String password)
{
    DfClientX clientx = null;
    IDfClient client = null;
    IDfSession session = null;
    try {
        // create a client object using a factory method in DfClientX
        clientx = new DfClientX();
        client = clientx.getLocalClient();   //takes time

        // call a factory method to create the session manager
        IDfSessionManager sessionMgr = client.newSessionManager();

        // create an IDfLoginInfo object and set its fields
        IDfLoginInfo loginInfo = clientx.getLoginInfo();
        loginInfo.setUser(userName);
        loginInfo.setPassword(password);

        // set single identity for all docbases
        sessionMgr.setIdentity("xyz_repo", loginInfo);
        session = sessionMgr.getSession("xyz_repo");   //takes time 
        //sessionMgr.beginTransaction();
        System.out.println("Session obtaied.");         
    }
    catch (DfServiceException dse)
    {
        DfLogger.debug(this, "Error while beginning transaction. ", null, dse);
        dse.printStackTrace();
    }

    catch (Exception e) 
    {
        DfLogger.debug(this, "Error while creating a new session. ", null, e);
        e.printStackTrace();
    } 
    return session;
}

And that line 38 is client = clientx.getLocalClient();

Answer 1

Ohkay I did not pin pointed the root cause, but found the solution that will definitely work everytime. EMC provides a flavor of Eclipse called Documentum Composer to work with Documentum Projects. Since Eclipse variation we can create other types of projects like normal Java project, dynamic web project, web services in this. So I recreated my project in Documetnum Composer and exported it as JAR and whoaaaa it worked.

I tried this many times and this worked all time.

Some points to note:

• You have to replace dfc.properties file in Composer installation folder with one in Content Server
• The Export to JAR wizard in Composer is a bit different than one in Eclipse