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https://issues.apache.org/jira/browse/WSCOMMONS-487?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Andreas Veithen resolved WSCOMMONS-487.
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Resolution: Fixed
Fix Version/s: Axiom 1.2.9
Implemented in r791968. See commit comment and Javadoc for more details.
> DataHandler extension should support deferred loading/parsing
> -------------------------------------------------------------
>
> Key: WSCOMMONS-487
> URL: https://issues.apache.org/jira/browse/WSCOMMONS-487
> Project: WS-Commons
> Issue Type: Improvement
> Components: AXIOM
> Affects Versions: Axiom 1.2.8
> Reporter: Andreas Veithen
> Assignee: Andreas Veithen
> Fix For: Axiom 1.2.9
>
>
> The XMLStreamReader extension defined by the IS_DATA_HANDLERS_AWARE,
> IS_BINARY and DATA_HANDLER properties (see OMConstants) currently only allows
> immediate loading of the DataHandler. This extension could be leveraged in a
> wider range of use cases if it also allowed deferred loading of the
> DataHandler: in this case the consumer of the XMLStreamReader would get a
> reference/link to the binary data but would fetch the DataHandler only when
> required (as Axiom does when processing an MTOM/XOP message).
> This improvement could be implemented by defining a set of additional
> properties, but a purely property based solution is not very usable,
> difficult to document and also not very efficient. The proposal is therefore
> to define an extension interface (with methods isBinary(), isDeferred(),
> getDataHandler(), etc.) as well as a single property that allows the consumer
> of the XMLStreamReader to query that extension interface. Of course care
> would be taken to maintain compatibility with the existing DataHandler
> extension.
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