[OPENJPA-1508] ArrayIndexOutOfBoundsException being thrown from ClassMetaData.getExtraFieldDataIndex()

• Type: Bug
• Status: Closed
• Priority: Major
• Resolution: Duplicate
• Affects Version/s: 1.2.2
• Fix Version/s: 2.1.0
• Component/s: jdbc
• Environment: found this on DB2, but I imagine it doesn't matter
• Assignee: Unassigned
• Reporter: Barrett Jay Reed
• Created: 12/Feb/10 20:16
• Updated: 09/Sep/10 15:29
• Resolved: 09/Sep/10 15:29

Description

An ArrayIndexOutOfBoundsException is being thrown by ClassMetaData.getExtraFieldDataIndex()

I am providing a test case. The only thing special is that the entities are set up in a hexagon shape, where the entities above have a OneToMany relationship with those below. The one at the very bottom has ManyToOne relationships with the two entities above it and I think this seems to be the cause of the problem.

I have done some debugging on this and here is where I have gotten to:

The problem is somewhere around the JDBCStoreManager.initializeState method

first time through, the mapping object is org.apache.openjpa.persistence.jdbc.query.HexagonBottom and the mappedByFieldMapping is
org.apache.openjpa.persistence.jdbc.query.HexagonBottom.lowerLeftId (looks good), index is 6
second time through, the mapping object is org.apache.openjpa.persistence.jdbc.query.HexagonLowerRight and the mappedByFieldMapping is still org.apache.openjpa.persistence.jdbc.query.HexagonBottom.lowerLeftId, so the index is still 6, but the HexagonLowerRight object only has 4 fields in it so the exception is thrown.