Hello,

I am writing JUnit test cases using MockStrutsTestCase. I have set up the environment for running the application. But getting this exception when I try to access a child object of a Persistant object that is retrieved from database.

StackTrace :

2004-04-14 14:23:49,296 ERROR [main] LazyInitializer.initializeWrapExceptions(63) | Exception initializing proxy
net.sf.hibernate.HibernateException: Could not initialize proxy - the owning Session was closed
at net.sf.hibernate.proxy.LazyInitializer.initialize(LazyInitializer.java:47)
at net.sf.hibernate.proxy.LazyInitializer.initializeWrapExceptions(LazyInitializer.java:60)
at net.sf.hibernate.proxy.LazyInitializer.getImplementation(LazyInitializer.java:164)
at net.sf.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:108)
at com.imc.sts.domain.TubeQuestions$$EnhancerByCGLIB$$3f882b50.getReceivedInShipment(<generated>)
at com.imc.sts.web.processor.QuestionsAction.unspecified(QuestionsAction.java:72)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:260)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:371)
at com.imc.sts.web.processor.QuestionsActionTest.testUnspecified(QuestionsActionTest.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:410)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:294)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:182)
net.sf.hibernate.LazyInitializationException: Exception initializing proxy: [com.imc.sts.domain.TubeQuestions#165]
at net.sf.hibernate.proxy.LazyInitializer.initializeWrapExceptions(LazyInitializer.java:64)
at net.sf.hibernate.proxy.LazyInitializer.getImplementation(LazyInitializer.java:164)
at net.sf.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:108)
at com.imc.sts.domain.TubeQuestions$$EnhancerByCGLIB$$3f882b50.getReceivedInShipment(<generated>)
at com.imc.sts.web.processor.QuestionsAction.unspecified(QuestionsAction.java:72)
at org.apache.struts.actions.DispatchAction.dispatchMethod(DispatchAction.java:260)
at org.apache.struts.actions.DispatchAction.execute(DispatchAction.java:216)
at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1482)
at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:525)
at servletunit.struts.MockStrutsTestCase.actionPerform(MockStrutsTestCase.java:371)
at com.imc.sts.web.processor.QuestionsActionTest.testUnspecified(QuestionsActionTest.java:70)
at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
at sun.reflect.NativeMethodAccessorImpl.invoke(Unknown Source)
at sun.reflect.DelegatingMethodAccessorImpl.invoke(Unknown Source)
at java.lang.reflect.Method.invoke(Unknown Source)
at junit.framework.TestCase.runTest(TestCase.java:154)
at junit.framework.TestCase.runBare(TestCase.java:127)
at junit.framework.TestResult$1.protect(TestResult.java:106)
at junit.framework.TestResult.runProtected(TestResult.java:124)
at junit.framework.TestResult.run(TestResult.java:109)
at junit.framework.TestCase.run(TestCase.java:118)
at junit.framework.TestSuite.runTest(TestSuite.java:208)
at junit.framework.TestSuite.run(TestSuite.java:203)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.runTests(RemoteTestRunner.java:410)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.run(RemoteTestRunner.java:294)
at org.eclipse.jdt.internal.junit.runner.RemoteTestRunner.main(RemoteTestRunner.java:182)
Caused by: net.sf.hibernate.HibernateException: Could not initialize proxy - the owning Session was closed
at net.sf.hibernate.proxy.LazyInitializer.initialize(LazyInitializer.java:47)
at net.sf.hibernate.proxy.LazyInitializer.initializeWrapExceptions(LazyInitializer.java:60)
... 27 more

Awaiting for replies,


nitin

i think this is normal you cannot initialize "lazy" things if your session is closed.
This can happen if you use copyproperties after closing session for example

Yes the session is getting closed. But my application works perfectly well with the same code. I am getting this problem only when writing JUnit test cases. Is there any method by which I can keep the session open for a number of database operations ?

Briefing :
1. After actionPerform() (in MockStrutsTestCase that will execute unspecified() method of Action class) method is called the Parent Object is retrieved. Child object is configured to lazy load.

2. When I call get method for the Child object(code is in the class that I am testing) it says that the session is closed.


Regards,

nitin