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http://jira.nuxeo.org/browse/NXP-2288?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Bogdan Stefanescu resolved NXP-2288.
------------------------------------

    Resolution: Fixed

Done. See  the following file for an example:
nuxeo-runtime-test/src/test/java/org/nuxeo/runtime/TestExtensionPoint.java
nuxeo-runtime-test/src/test/java/org/nuxeo/runtime/BaseXPoint.xml
nuxeo-runtime-test/src/test/java/org/nuxeo/runtime/OverridingXPoint.xml



> Make possible to override an extension point definition
> -------------------------------------------------------
>
>                 Key: NXP-2288
>                 URL: http://jira.nuxeo.org/browse/NXP-2288
>             Project: Nuxeo Enterprise Platform 5
>          Issue Type: New Feature
>            Reporter: Bogdan Stefanescu
>            Assignee: Thierry Delprat
>   Original Estimate: 3 hours
>  Remaining Estimate: 3 hours
>
> There are cases when an extension point is too restrictive for the type of 
> objects that can be contributed by extensions.
> For example let say you have a transformer extension that should be 
> contributed as 
> <transformer name="NAME" class="CLASS"/>
> In some situations you may have complex transformers that need some 
> configurations so the syntax above is not enough.
> For example you may have a wiki2html ytransformer that can be customized to 
> use 0 or more filters and macro engines.
> In that case you may want to define the transformer as:
> <transformer name="wiki2html" class="org.nuxeo...WikiSerializer">
>   <filter pattern="NXP-[0-9]+" replacement="<a 
> href=\"http://jira.nuxeo.org/browse/$0\";>$0</a>"/>
>   <macro name="freemarker" class="org.nuxeo..."/>
> </transformer> 
> In this case you cannot contribute directly your extension to the transformer 
> extension point since the target extension point is 
> accepting objects described by an incompatible XML:
> <transformer name="NAME" class="CLASS"/>
> This new feature provides a solution to that problem.
> You can now define a new extension point that is extending the "transformer" 
> extension point and change the type of the XML contribution it accepts.
> The extended extension point will forward any contribution to the base 
> extension point.
> Then you contribute your "extended" XML extension to the overriding extension 
> point (that will transform the XML into a java object and will forward the 
> registration of that object to the extended extension point)
> This means the contributed java object should be of a compatible type with 
> the one expected by the original extension point.
> You can see an example of the new extension point feature in 
> nuxeo-runtime-test/src/test/java/org/nuxeo/runtime/TestExtensionPoint.java

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