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From "Simon Droscher (JIRA)" <j...@apache.org>
Subject [jira] Created: (OPENJPA-1613) Exception thrown when enhancing a (property access) class that has an abstract @MappedSuperclass with no annotated properties
Date Tue, 06 Apr 2010 23:28:33 GMT
Exception thrown when enhancing a (property access) class that has an abstract @MappedSuperclass
with no annotated properties
-----------------------------------------------------------------------------------------------------------------------------

                 Key: OPENJPA-1613
                 URL: https://issues.apache.org/jira/browse/OPENJPA-1613
             Project: OpenJPA
          Issue Type: Bug
          Components: kernel
    Affects Versions: 2.0.0-beta3, 2.0.0-beta2
            Reporter: Simon Droscher


If you have a class (using property access) that has an abstract @MappedSuperclass that happens
to have no annotated methods, you get the following exception when enhancing:

org.apache.openjpa.util.MetaDataException: "implicit property access" for class "org.apache.openjpa.persistence.simple.SubclassPerson"
is not consistent with "implicit field access" used by its persistent superclass "org.apache.openjpa.persistence.simple.AbstractSuperclass".
 All persistent classes in an inheritance hierarchy must use a single implicit field or property
based access style or explicitly declare an access style.

Presumably the enhancer is deciding incorrectly that the superclass is using field access.
A workaround is to annotate the superclass with @Access(AccessType.PROPERTY)  so the enhancer
doesn't make this assumption, but that is not JPA 1.0 backwards compatible.

This did not occur in any of the OpenJPA 1.* versions




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