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https://issues.apache.org/jira/browse/JXPATH-113?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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Benedikt Ritter resolved JXPATH-113.
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Resolution: Fixed
Assignee: Benedikt Ritter
> NullPointerException in ChildContext when document only contains an empty
> root node
> -----------------------------------------------------------------------------------
>
> Key: JXPATH-113
> URL: https://issues.apache.org/jira/browse/JXPATH-113
> Project: Commons JXPath
> Issue Type: Bug
> Reporter: Michele Vivoda
> Assignee: Benedikt Ritter
> Priority: Minor
> Fix For: 1.4
>
>
> In ChildContext I get a NullPointerException, the error appears in method
> prepare()
> {code:java}
> iterator = (startFromParentLocation ? parent.getParent() :
> parent).childIterator(nodeTest,
> reverse, startFromParentLocation ? parent : null);
> {code}
>
> should be changed in my opinion to
> {code:java}
> final NodePointer actualParent = startFromParentLocation ? parent.getParent()
> : parent;
> iterator = actualParent==null ? null :
> actualParent.childIterator(nodeTest,
> reverse, startFromParentLocation ? parent : null);
> {code}
> The tests triggering the error are testIssue172_CountFollowingSiblingNode and
> testIssue172_CountPrecedingSiblingNode
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