Make SDOPackageRegistryDelegator pluggable
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                 Key: TUSCANY-1831
                 URL: https://issues.apache.org/jira/browse/TUSCANY-1831
             Project: Tuscany
          Issue Type: Improvement
          Components: Java SDO Implementation
    Affects Versions: Java-SDO-Next
            Reporter: Ron Gavlin


The current SDOPackageRegistryDelegator implementation assumes that a standard, 
hierarchical classloader structure is present in the "hosting environment". BEA 
WebLogic, for example, uses an unusual "change aware" classloading scheme which 
does not meet the expectations of the SDOPackageRegistryDelegator. Prior to 
Tuscany SDO 1.0, I was able to work-around this former EMF problem by setting 
the EMF JVM property "org.eclipse.emf.ecore.EPackage.Registry.INSTANCE". In 
Tuscany SDO 1.0, this setting is no longer relevant. I would like to be able to 
plugin my own SDOPackageRegistryDelegator implementation that provides a 
non-classloader-aware registry, knowing full well the limitations of of this 
implementation.

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