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From "Michele Vivoda (JIRA)" <j...@apache.org>
Subject [jira] Created: (JXPATH-113) NullPointerException in ChildContext
Date Sun, 23 Dec 2007 17:38:42 GMT
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


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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