[jira] Assigned: (WSCOMMONS-485) The sequence of events produced by OMStAXWrapper for XOP:Include is inconsistent

["Andreas Veithen (JIRA)" <ji...@apache.org>]

     [ https://issues.apache.org/jira/browse/WSCOMMONS-485?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel ]

Andreas Veithen reassigned WSCOMMONS-485:
-----------------------------------------

    Assignee: Andreas Veithen

> The sequence of events produced by OMStAXWrapper for XOP:Include is inconsistent
> --------------------------------------------------------------------------------
>
>                 Key: WSCOMMONS-485
>                 URL: https://issues.apache.org/jira/browse/WSCOMMONS-485
>             Project: WS-Commons
>          Issue Type: Bug
>          Components: AXIOM
>    Affects Versions: Axiom 1.2.8
>            Reporter: Andreas Veithen
>            Assignee: Andreas Veithen
>
> For an Axiom tree built by MTOMStAXSOAPModelBuilder (or XOPAwareStAXOMBuilder) the sequence of events produced by OMStAXWrapper (i.e. the reader returned by getXMLStreamReader and getXMLStreamReaderWithoutCaching) for an XOP:Include element in the underlying stream depends on the state of the tree and on whether caching is enabled or not:
> Scenario 1: The tree has already been built. In this case OMStAXWrapper produces a CHARACTER event on which the OMConstants.DATA_HANDLER property can be queried. This is true both for caching enabled and disabled.
> Scenario 2: The tree has not been built and caching is enabled. In this case OMStAXWrapper produces an invalid sequence of events: namely, there is a spurious END_DOCUMENT event. Except for this bug, in this case OMStAXWrapper behaves as described in scenario 1.
> Scenario 3: The tree has not been built and caching is disabled. In this case OMStAXWrapper delegates to the raw StAX stream and produces START_ELEMENT and END_ELEMENT events for the XOP:Include element, leaving it up to the client code to decode XOP.
> Conclusion:
> - When caching is disabled, the sequence of events depends on the state of the tree (built or not).
> - The sequence of events produced by getXMLStreamReader and getXMLStreamReaderWithoutCaching is not the same.
> Since aspects such as caching and the state of the tree should be transparent to the client code, Axiom should be fixed so that OMStAXWrapper produces the same sequence of events in all cases. The correct sequence is the one described in scenario 1, because it is Axiom's responsibility to decode XOP.

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