Has anyone tried to do the following:

- load several POJOs and save them all into an array, call it pojos.
- call java.util.Arrays.sort (pojos)
- Get the following error. I made user that the the session.close () nor disconnect was never called.

org.hibernate.LazyInitializationException: could not initialize proxy - the owning Session was closed
at org.hibernate.proxy.AbstractLazyInitializer.initialize(AbstractLazyInitializer.java:56)
at org.hibernate.proxy.AbstractLazyInitializer.getImplementation(AbstractLazyInitializer.java:98)
at org.hibernate.proxy.CGLIBLazyInitializer.intercept(CGLIBLazyInitializer.java:158)
at org.nesg.plims.pojo.Organism$$EnhancerByCGLIB$$b627858.compareTo(<generated>)
at java.util.Arrays.mergeSort(Arrays.java:1156)
at java.util.Arrays.mergeSort(Arrays.java:1167)
at java.util.Arrays.sort(Arrays.java:1080)
...

Can anyone offer some help on this one?

Can you sort the POJOs when they are not proxied by Hibernate? Is compareTo() properly defined? The stack trace does not indicate an error accesing a property of the bean so maybe the error message is misleading?

You can try putting a breakpoint/log statement in your POJO's compareTo() and see if the code is called.

Hope this helps :)

Marius

That helped.

My own compareTo method was never called, actually. From the stack trace, it looked a generated compareTo method was called instead.

Ultimately, I tried adding lazy="false" to my class definition:

<class name="org.nesg.plims.pojo.Organism" table="NESG_ORGANISM" lazy="false">

After that, the error went away.