Brian Towles created SENTRY-2116:
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             Summary: Allow Data Nucleus connection pooling library to be 
changed via its normal system properties
                 Key: SENTRY-2116
                 URL: https://issues.apache.org/jira/browse/SENTRY-2116
             Project: Sentry
          Issue Type: Bug
          Components: Core
    Affects Versions: 2.0.0
            Reporter: Brian Towles


Data Nucleus allows multiple different connection pooling libraries to be used, 
such as DBCP, C3P0, BoneCP, and HikariCP.  

Currently we hard code the connection pool library to be used by setting the 
_datanucleus.connectionPoolingType_ property to be only BoneCP.  We are not 
allowing for any of the custom overrides via system properties to be passed in 
or used.  We do this by passing only override properties into the 
_JDOPersistenceManagerFactory.getPersistenceManagerFactory_.

To allow for flexibility during implementation as well as to possibly get 
around bugs in the default connection pool lib selected we should allow for the 
end user to be able to set the connection pool via the standard Data Nucleus 
system properties if necessary.



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