TopLink - create dynamically session login ?

Question

Hi all,
pls, how can I create dynamically login to database?
I use toplink workbench and in this step 6: [http://www.oracle.com/technology/products/ias/toplink/doc/11110/tutorial/intro/standalone/intro_tutorial010.htm#CIHIHIFF] I do not check "save Login and Password" ...
If I set static user and password, everthing works fine, bud i need created login dynamically.. my code is:
+protected void createSession() throws Exception {+
System.setProperty("toplink.xml.platform", "oracle.toplink.platform.xml.jaxp.JAXPPlatform");
XMLSessionConfigLoader loader = new XMLSessionConfigLoader(getSessionsXmlPath());
SessionManager mgr = oracle.toplink.tools.sessionmanagement.SessionManager.getManager();
session.setLogin(applyLogin());
session = (ServerSession)mgr.getSession(loader, getSessionName(), Thread.currentThread().getContextClassLoader(), true, true);
+}+
+private DatabaseLogin applyLogin(){+
DatabaseLogin login = new DatabaseLogin();
login.usePlatform(new oracle.toplink.platform.database.oracle.Oracle8Platform());
login.setDriverClassName("oracle.jdbc.OracleDriver");
login.setConnectionString("path"); //jdbc:oracle:thin:@HOST:PORT:SID - path is OK (but its SECRET) :-)
login.setUserName("user"); //USER NAME  - user is OK, but secred ;-)
login.setEncryptedPassword("pass"); //PASSWORD, ENCRYPTED password is OK ;-)
return login;
+}+
but it still returns java.lang.NullPointerException! If i set in TopLink workbench user and password, so it works..
Any ideas, how set login in Java, pls?
Sry for my English..
Thanks advance!
Bes regards, KLD

Answer 1

Well,
now it's works, but I have still one problem :(
If I create a session in the TopLink Benchmark, and I don't save a user and user's password in the connection to the DB (in Benchmark when I create Login in session.. - and this I don't want to save user and password!) the sessions is created OK:
session = (ServerSession)mgr.getSession(loader, getSessionName(), Thread.currentThread().getContextClassLoader(), false, true);
Login is created OK:
session.setLogin(myLogin());
+private DatabaseLogin myLogin(){+
DatabaseLogin login = new DatabaseLogin();
login.usePlatform(new oracle.toplink.platform.database.oracle.Oracle11Platform());
login.setDriverClassName("oracle.jdbc.driver.OracleDriver");
login.setConnectionString("xxx"); //jdbc:oracle:thin:@HOST:PORT:SID
login.setUserName("xxx"); //USER NAME
login.setEncryptedPassword(xxx"); //PASSWORD, ENCRYPTED
return login;
+}+
But If I want login to the DB with this login and session:
session.login();
Then return java.lang.NullPointerException
and in console is write:
*Exception [TOPLINK-4002] (Oracle TopLink - 11g (11.1.1.0.0) (Build 080909)): oracle.toplink.exceptions.DatabaseException*
Internal Exception: java.sql.SQLException: call invalid arguments
Error Code: 17433
But I don't now how? If i save user and password in benchmark, everthing works fine...
Any ideas, pls?
Thanks advance!
Sry for my English...
Best regards, KLD.