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List:       jboss-user
Subject:    [jboss-user] [EJB 3.0 Users] - NullPointerException using BLOBs
From:       ejb3workshop <do-not-reply () jboss ! com>
Date:       2009-09-30 14:57:29
Message-ID: 10064877.1254322649925.JavaMail.jboss () nukes01 ! app ! mwc ! hst ! phx2 ! redhat ! com
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When trying to read a entity containing a BLOB from DB2 I get a NullPointerException. \
I haven't quite narrowed the exact size limit down, but it's about at 1MB. Content \
smaller then this barrier and there is no problem. My guess is that this is some \
strange driver issue, but searching the web has not produced any results. Using the \
same application with SQL Server 2005 works fine. I am using JBoss 4.2.3 with DB2 \
9.5. The type 4 driver breaks DB2 and causes it to shutdown, so I am using the type 2 \
driver.

Any suggestion on what I could do to further narrow down are welcome.

Thanks in advance
Alex

anonymous wrote : java.lang.NullPointerException
  |         at com.ibm.db2.jcc.uw.UWConnection.a(UWConnection.java:959)
  |         at com.ibm.db2.jcc.a.p.e(p.java:281)
  |         at com.ibm.db2.jcc.t4.a.e(a.java:451)
  |         at com.ibm.db2.jcc.a.gl.a(gl.java:4792)
  |         at com.ibm.db2.jcc.a.eg.a(eg.java:292)
  |         at com.ibm.db2.jcc.a.eg.b(eg.java:248)
  |         at com.ibm.db2.jcc.a.ce.a(ce.java:277)
  |         at com.ibm.db2.jcc.a.be.getBytes(be.java:99)
  |         at com.ibm.db2.jcc.a.ce.getBytes(ce.java:136)
  |         at org.hibernate.type.ByteArrayBlobType.get(ByteArrayBlobType.java:90)
  |         at org.hibernate.type.AbstractLobType.nullSafeGet(AbstractLobType.java:46)
  |         at org.hibernate.type.AbstractType.hydrate(AbstractType.java:81)
  |         at org.hibernate.persister.entity.AbstractEntityPersister.hydrate(AbstractEntityPersister.java:2096)
  |         at org.hibernate.loader.Loader.loadFromResultSet(Loader.java:1380)
  |         at org.hibernate.loader.Loader.instanceNotYetLoaded(Loader.java:1308)
  |         at org.hibernate.loader.Loader.getRow(Loader.java:1206)
  |         at org.hibernate.loader.Loader.getRowFromResultSet(Loader.java:580)
  |         at org.hibernate.loader.Loader.doQuery(Loader.java:701)
  |         at org.hibernate.loader.Loader.doQueryAndInitializeNonLazyCollections(Loader.java:236)
  |         at org.hibernate.loader.Loader.doList(Loader.java:2220)
  |         at org.hibernate.loader.Loader.listIgnoreQueryCache(Loader.java:2104)
  |         at org.hibernate.loader.Loader.list(Loader.java:2099)
  |         at org.hibernate.loader.hql.QueryLoader.list(QueryLoader.java:378)
  |         at org.hibernate.hql.ast.QueryTranslatorImpl.list(QueryTranslatorImpl.java:338)
  |         at org.hibernate.engine.query.HQLQueryPlan.performList(HQLQueryPlan.java:172)
  |         at org.hibernate.impl.SessionImpl.list(SessionImpl.java:1121)
  |         at org.hibernate.impl.QueryImpl.list(QueryImpl.java:79)
  |         at org.hibernate.ejb.QueryImpl.getResultList(QueryImpl.java:64)
  | 

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