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roberto_sc
 Post subject: Java heap space -> Field vs. Property Access Problem
PostPosted: Thu Apr 09, 2009 10:33 am 
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Beginner

Joined: Wed Nov 12, 2008 12:07 pm
Posts: 21
Hello

I have a model with many one-to-many associations (many!). I'm getting this when I try to commit the persistence of an object:

Code:

Exception in thread "main" java.lang.OutOfMemoryError: Java heap space
   at java.util.Arrays.copyOfRange(Unknown Source)
   at java.lang.String.<init>(Unknown Source)
   at java.lang.StringBuffer.toString(Unknown Source)
   at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:79)
   at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:43)
   at org.hibernate.loader.entity.EntityLoader.<init>(EntityLoader.java:33)
   at org.hibernate.loader.entity.BatchingEntityLoader.createBatchingEntityLoader(BatchingEntityLoader.java:103)
   at org.hibernate.persister.entity.AbstractEntityPersister.createEntityLoader(AbstractEntityPersister.java:1744)
   at org.hibernate.persister.entity.AbstractEntityPersister.createEntityLoader(AbstractEntityPersister.java:1748)
   at org.hibernate.persister.entity.AbstractEntityPersister.createLoaders(AbstractEntityPersister.java:2978)
   at org.hibernate.persister.entity.AbstractEntityPersister.postInstantiate(AbstractEntityPersister.java:2971)
   at org.hibernate.impl.SessionFactoryImpl.<init>(SessionFactoryImpl.java:290)
   at org.hibernate.cfg.Configuration.buildSessionFactory(Configuration.java:1294)
   at org.hibernate.cfg.AnnotationConfiguration.buildSessionFactory(AnnotationConfiguration.java:867)
   at org.hibernate.ejb.Ejb3Configuration.buildEntityManagerFactory(Ejb3Configuration.java:669)
   at org.hibernate.ejb.HibernatePersistence.createEntityManagerFactory(HibernatePersistence.java:126)
   at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:52)
   at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:34)
   at tests.Main.main(Main.java:18)


I'm using field access and read somewhere that field access always uses eager loading.

Is that true? May I have a similar memory problem when trying to load an object because I'm using field access?

Does field access has to do with the memory problem I'm having now? (since I'm saving an object now, not loading)

Thank you
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