[jira] [Created] (JXPATH-177) Pipe in combination with variables causes NullPointerException

["Martin Xarx (JIRA)" <ji...@apache.org>]

Martin Xarx created JXPATH-177:
----------------------------------

             Summary: Pipe in combination with variables causes NullPointerException
                 Key: JXPATH-177
                 URL: https://issues.apache.org/jira/browse/JXPATH-177
             Project: Commons JXPath
          Issue Type: Bug
            Reporter: Martin Xarx


xpath: name", result: ROOT name
xpath: /x/name", result: X name
xpath: $__root/x/name", result: X name
xpath: $__root/x/name|name

Exception in thread "main" java.lang.NullPointerException
	at org.apache.commons.jxpath.ri.model.dynamic.DynamicPointer.hashCode(DynamicPointer.java:126)
	at org.apache.commons.jxpath.ri.model.beans.PropertyPointer.hashCode(PropertyPointer.java:221)
	at java.util.HashMap.hash(HashMap.java:338)
	at java.util.HashMap.containsKey(HashMap.java:595)
	at java.util.HashSet.contains(HashSet.java:203)
	at org.apache.commons.jxpath.ri.model.NodePointer.compareTo(NodePointer.java:759)
	at java.util.ComparableTimSort.countRunAndMakeAscending(ComparableTimSort.java:316)
	at java.util.ComparableTimSort.sort(ComparableTimSort.java:184)
	at java.util.Arrays.sort(Arrays.java:1312)
	at java.util.Arrays.sort(Arrays.java:1506)
	at java.util.ArrayList.sort(ArrayList.java:1454)
	at java.util.Collections.sort(Collections.java:141)
	at org.apache.commons.jxpath.ri.EvalContext.sortPointers(EvalContext.java:206)
	at org.apache.commons.jxpath.ri.axes.UnionContext.setPosition(UnionContext.java:68)
	at org.apache.commons.jxpath.ri.axes.NodeSetContext.nextNode(NodeSetContext.java:68)
	at org.apache.commons.jxpath.ri.EvalContext.getSingleNodePointer(EvalContext.java:312)
	at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getPointer(JXPathContextReferenceImpl.java:464)
	at org.apache.commons.jxpath.ri.JXPathContextReferenceImpl.getPointer(JXPathContextReferenceImpl.java:452)

I'm using model created from java containers (Lists, Maps):

{
	"name" : "ROOT name",
	"x" : {
		"name" : "X name"
	}
}




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