Jadon Hansell created CAY-2840:
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Summary: Vertical Inheritance: Missing subclass attributes with
joint prefetch
Key: CAY-2840
URL: https://issues.apache.org/jira/browse/CAY-2840
Project: Cayenne
Issue Type: Bug
Components: Core Library
Affects Versions: 4.2, 5.0-M1
Reporter: Jadon Hansell
If you use a joint prefetch a belongs-to relationship whose target is using
vertical inheritance, the attributes on the child class are set to null instead
of using the results from the database.
It looks like this is happening when the attribute is read in
DescriptorColumnExtractor.visitAttribute, it includes the 'p:' prefetch prefix
in the data row key that gets built. Later, the data row result is read from a
map without the prefix in the key, and is not found. This only happens on a
joint prefetch, disjoint and disjointById work correctly.
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