[jira] [Created] (JOHNZON-275) Adapter implementations that indirectly inherit from Adapter throw MapperException on deserialization

["Steven Walters (Jira)" <ji...@apache.org>]

Steven Walters created JOHNZON-275:
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             Summary: Adapter implementations that indirectly inherit from Adapter throw MapperException on deserialization
                 Key: JOHNZON-275
                 URL: https://issues.apache.org/jira/browse/JOHNZON-275
             Project: Johnzon
          Issue Type: Improvement
          Components: Mapper
    Affects Versions: 1.1.13
            Reporter: Steven Walters
         Attachments: johnzon-mapper-indirect-adapter-key.zip

Mapper release 1.1.13 created a regression in the treatment of Adapter implementations that indirectly inherit from Adapter.
"Indirect inheritance" is such that the type does not directly implement Adapter, but extends some other type that implements Adapter).
A brief look into the cause of the issue is that the "reverse" adapter key cannot be found/determined and causes a NullPointerException to be thrown when trying to utilize the null AdapterKey.
It should be noted that this behavior worked without issue in 1.1.12.
Attached is a test case that exemplifies the issue.



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