[jira] [Created] (OPENJPA-2544) OpenJPA should allow null value as surrogate for an empty collection or array in queries

["Thomas Darimont (JIRA)" <ji...@apache.org>]

Thomas Darimont created OPENJPA-2544:
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             Summary: OpenJPA should allow null value as surrogate for an empty collection or array in queries
                 Key: OPENJPA-2544
                 URL: https://issues.apache.org/jira/browse/OPENJPA-2544
             Project: OpenJPA
          Issue Type: Improvement
          Components: criteria
    Affects Versions: 2.3.0
            Reporter: Thomas Darimont
            Priority: Minor


Hibernate and EclipseLink support null to be used as a surrogate for an empty collection in CriteriaQueries. 
Would be great to have that in OpenJPA as well - sadly the JPA spec isn't that clear on this...

I added a test case that reproduces the issue:
https://gist.github.com/thomasdarimont/b8d4f01b0e66bcdb2560
See: shouldSupportNullValueAsASubstituateForAnEmptyParameterList



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