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https://issues.apache.org/jira/browse/AXIOM-367?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13070132#comment-13070132
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Andreas Veithen commented on AXIOM-367:
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There are actually two aspects:
1. Axiom's XPath API is strongly coupled to Jaxen. It would indeed be a good
idea to change that and to introduce an abstract API that would eventually
allow to replace Jaxen (which doesn't seem to be under active development) by
another XPath implementation. Instead of defining a completely new Axiom
specific API for this, the best approach is probably to reuse (parts of) the
javax.xml.xpath API, which is already designed to be object model independent.
2. Adding XPath 2.0 support. Creating and maintaining an Axiom specific
implementation of XPath 2.0 is probably out of scope for this project.
Therefore we would have to identify an existing XPath 2.0 implementation that
can be integrated with Axiom. For implementations of the Axiom object model
that also implement DOM, one could reuse an existing DOM based XPath
implementation. For LLOM one would have to find an XPath 2.0 implementation
that has an abstraction layer to support multiple object models. I'm not aware
of any XPath implementation that offers this, but I didn't do an extensive
search.
> Improving AXIOMXPath to support XPath 2.0
> ------------------------------------------
>
> Key: AXIOM-367
> URL: https://issues.apache.org/jira/browse/AXIOM-367
> Project: Axiom
> Issue Type: Improvement
> Reporter: Heshan Suriyaarachchi
>
> AXIOMXPath is developed by extending org.jaxen.BaseXPath. Since Jaxen is only
> supporting Xpath 1.0, Axiom XPath will also be only supporting XPath 1.0. It
> would be really useful if AXIOMXPath is improved to support XPath 2.0. It
> will be beneficial for the projects which are using AXIOMXPath. eg. Apache
> Synapse is also extending AXIOMXPath in it's
> org.apache.synapse.util.xpath.SynapseXPath implementation.
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