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From "Rick Curtis (JIRA)" <j...@apache.org>
Subject [jira] [Created] (OPENJPA-2482) java.sql.SQLException when processing a query result
Date Tue, 11 Mar 2014 20:42:43 GMT
Rick Curtis created OPENJPA-2482:
------------------------------------

             Summary: java.sql.SQLException when processing a query result
                 Key: OPENJPA-2482
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2482
             Project: OpenJPA
          Issue Type: Bug
          Components: jdbc
    Affects Versions: 2.2.2, 2.1.1, 2.3.0, 2.4.0
            Reporter: Rick Curtis
            Assignee: Rick Curtis
             Fix For: 2.4.0


We encountered the following stacktrace[1] when processing the results of a very complex query.


After much debugging I found that the net of the problem is that in SelectImpl we cache column
aliases(cachedColumnAlias_) keyed off a given org.apache.openjpa.jdbc.schema.Column, but a
given column might map to multiple aliases(depending on the PathJoins @see SelectImpl.SelectResult.containsInternal).
It appears that under normal circumstances it is okay that we continually overwrite aliases,
but for this one query we were incorrectly mapping to the wrong alias. I unsuccessfully attempted
to write a unit test for a good day and I've given up on providing a unit tests. 

Committers :: please feel free to review this commit to ensure that I'm not regressing an
behavior.

[1] <openjpa-2.1.2-SNAPSHOT-r422266:1530146 fatal general error> org.apache.openjpa.persistence.PersistenceException:
t1.EMPMGREMPNO
FailedObject: com.ibm.itsas.jpa.people.Person-C-BBHJ897 [java.lang.String]
	at org.apache.openjpa.jdbc.sql.DBDictionary.narrow(DBDictionary.java:4925)
	at org.apache.openjpa.jdbc.sql.DBDictionary.newStoreException(DBDictionary.java:4885)
	at org.apache.openjpa.jdbc.sql.DB2Dictionary.newStoreException(DB2Dictionary.java:603)
	at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:136)
	at org.apache.openjpa.jdbc.sql.SQLExceptions.getStore(SQLExceptions.java:86)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:338)
	at com.ibm.ws.persistence.jdbc.kernel.WsJpaJDBCStoreManager.initialize(WsJpaJDBCStoreManager.java:149)
	at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112)
	at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
	at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1027)
	at com.ibm.ws.persistence.kernel.WsJpaBrokerImpl.initialize(WsJpaBrokerImpl.java:257)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:985)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:907)
	at com.ibm.ws.persistence.kernel.WsJpaBrokerImpl.find(WsJpaBrokerImpl.java:199)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1041)
	at com.ibm.ws.persistence.jdbc.kernel.WsJpaJDBCStoreManager.load(WsJpaJDBCStoreManager.java:112)
	at org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:280)
	at org.apache.openjpa.jdbc.sql.SelectImpl$SelectResult.load(SelectImpl.java:2381)
	at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.loadEagerJoin(RelationFieldStrategy.java:724)
	at org.apache.openjpa.jdbc.meta.FieldMapping.loadEagerJoin(FieldMapping.java:922)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1111)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1067)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:438)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:333)
	at com.ibm.ws.persistence.jdbc.kernel.WsJpaJDBCStoreManager.initialize(WsJpaJDBCStoreManager.java:149)
	at org.apache.openjpa.kernel.DelegatingStoreManager.initialize(DelegatingStoreManager.java:112)
	at org.apache.openjpa.kernel.ROPStoreManager.initialize(ROPStoreManager.java:57)
	at org.apache.openjpa.kernel.BrokerImpl.initialize(BrokerImpl.java:1027)
	at com.ibm.ws.persistence.kernel.WsJpaBrokerImpl.initialize(WsJpaBrokerImpl.java:257)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:985)
	at org.apache.openjpa.kernel.BrokerImpl.find(BrokerImpl.java:907)
	at com.ibm.ws.persistence.kernel.WsJpaBrokerImpl.find(WsJpaBrokerImpl.java:199)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1041)
	at com.ibm.ws.persistence.jdbc.kernel.WsJpaJDBCStoreManager.load(WsJpaJDBCStoreManager.java:112)
	at org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:280)
	at org.apache.openjpa.jdbc.sql.SelectImpl$SelectResult.load(SelectImpl.java:2381)
	at org.apache.openjpa.jdbc.sql.AbstractResult.load(AbstractResult.java:274)
	at org.apache.openjpa.jdbc.kernel.InstanceResultObjectProvider.getResultObject(InstanceResultObjectProvider.java:59)
	at org.apache.openjpa.kernel.QueryImpl$PackingResultObjectProvider.getResultObject(QueryImpl.java:2075)
	at org.apache.openjpa.lib.rop.EagerResultList.<init>(EagerResultList.java:36)
	at org.apache.openjpa.kernel.QueryImpl.toResult(QueryImpl.java:1251)
	at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:1007)
	at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:863)
	at org.apache.openjpa.kernel.QueryImpl.execute(QueryImpl.java:794)
	at org.apache.openjpa.kernel.DelegatingQuery.execute(DelegatingQuery.java:542)
	at org.apache.openjpa.persistence.QueryImpl.execute(QueryImpl.java:315)
	at org.apache.openjpa.persistence.QueryImpl.getResultList(QueryImpl.java:331)
	....
Caused by: 
java.sql.SQLException: t1.FK
	at org.apache.openjpa.jdbc.sql.SelectImpl$SelectResult.findObject(SelectImpl.java:2507)
	at org.apache.openjpa.jdbc.sql.ResultSetResult.translate(ResultSetResult.java:497)
	at org.apache.openjpa.jdbc.sql.AbstractResult.getString(AbstractResult.java:767)
	at org.apache.openjpa.jdbc.meta.strats.StringFieldStrategy.getPrimaryKeyValue(StringFieldStrategy.java:217)
	at org.apache.openjpa.jdbc.meta.ClassMapping.getObjectId(ClassMapping.java:188)
	at org.apache.openjpa.jdbc.meta.ClassMapping.getObjectId(ClassMapping.java:147)
	at org.apache.openjpa.jdbc.meta.strats.RelationFieldStrategy.load(RelationFieldStrategy.java:754)
	at org.apache.openjpa.jdbc.meta.FieldMapping.load(FieldMapping.java:928)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1123)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.load(JDBCStoreManager.java:1067)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initializeState(JDBCStoreManager.java:438)
	at org.apache.openjpa.jdbc.kernel.JDBCStoreManager.initialize(JDBCStoreManager.java:333)
	... 150 more




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