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From "Kevin Sutter (JIRA)" <>
Subject [jira] [Commented] (OPENJPA-2204) NPE in JDBCStoreManager with Trace turned on
Date Tue, 05 Jun 2012 02:22:22 GMT


Kevin Sutter commented on OPENJPA-2204:

Reproduced the problem  by turning on Trace for the org.apache.openjpa.persistence.graph.TestPersistentGraph
junit testcase.  My first guess was correct -- the getDeclaredTypeMapping() was returning
null and causing the NPE for the trace string.  I modified the prep for this trace string
and all works now.  I'll correct in Trunk and let other service stream owners pull it back,
if desired.
> NPE in JDBCStoreManager with Trace turned on
> --------------------------------------------
>                 Key: OPENJPA-2204
>                 URL:
>             Project: OpenJPA
>          Issue Type: Bug
>          Components: jdbc, logging
>    Affects Versions: 2.3.0, 2.2.1
>            Reporter: Kevin Sutter
> Reporting JIRA on behalf of a user without access to JIRAs...
> OK - nearly there! Presumably because we're no longer hooked in to the container, OpenJPA
was pumping out its log messages to system out. I set openjpa.Log to "commons" and, as desired,
it now sends trace to java.util.logging. The only problem is that, when I set trace to "openjpa.*=all"
I get a NullPointerException (that isn't there when trace is turned off):
> [31/05/12 11:31:05:576 BST] 00000020 id=    
                         3 printStackTrace java.lang.NullPointerException
> 	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.find(
> 	at org.apache.openjpa.jdbc.meta.strats.UntypedPCValueHandler.toObjectValue(
> 	at org.apache.openjpa.jdbc.meta.strats.HandlerStrategies.loadObject(
> 	at org.apache.openjpa.jdbc.meta.strats.HandlerCollectionTableFieldStrategy.loadElement(
> 	at org.apache.openjpa.jdbc.meta.strats.StoreCollectionFieldStrategy.load(
> 	at org.apache.openjpa.jdbc.meta.FieldMapping.load(
> 	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(
> 	at
> 	at org.apache.openjpa.kernel.DelegatingStoreManager.load(
> 	at org.apache.openjpa.kernel.ROPStoreManager.load(
> 	at org.apache.openjpa.kernel.StateManagerImpl.loadFields(
> 	at org.apache.openjpa.kernel.StateManagerImpl.loadField(
> 	at org.apache.openjpa.kernel.StateManagerImpl.beforeAccessField(
> 	at org.apache.openjpa.kernel.StateManagerImpl.accessingField(
> 	at
> 	at
> This NPE looks to be due to dumping the parameters for the JDBCStoreManager.find():
>         if (_log.isTraceEnabled()) {
>             _log.trace("find: oid="+oid+" "+vm.getDeclaredTypeMapping().getDescribedType());
>         }
> And, either vm or vm.getDeclaredTypeMapping() is null...

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