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https://issues.apache.org/jira/browse/JXPATH-113?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13886607#comment-13886607
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Emmanuel Bourg commented on JXPATH-113:
---------------------------------------
Michele, do you think you could provide a patch with a test case please? If you
are used to git you can also fork the repository on Github and send a pull
request.
https://github.com/apache/commons-jxpath
> NullPointerException in ChildContext
> ------------------------------------
>
> Key: JXPATH-113
> URL: https://issues.apache.org/jira/browse/JXPATH-113
> Project: Commons JXPath
> Issue Type: Bug
> Reporter: Michele Vivoda
> Priority: Minor
> Fix For: 1.3
>
>
> In ChildContext I get a NullPointerException, the error appears in method
> prepare()
> iterator = (startFromParentLocation ? parent.getParent() :
> parent).childIterator(nodeTest,
> reverse, startFromParentLocation ? parent : null);
>
> should be changed in my opinion to
> final NodePointer actualParent = startFromParentLocation ? parent.getParent()
> : parent;
> iterator = actualParent==null ? null :
> actualParent.childIterator(nodeTest,
> reverse, startFromParentLocation ? parent : null);
> The tests triggering the error are testIssue172_CountFollowingSiblingNode and
> testIssue172_CountPrecedingSiblingNode
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