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  1. Axiom
  2. AXIOM-166

getChildrenWithQName.next throws ClassCastException, OMChildrenQNameIterator implements Iterator but does not satisfy published interface behavior

    Details

    • Type: Bug
    • Status: Closed
    • Priority: Blocker
    • Resolution: Fixed
    • Affects Version/s: None
    • Fix Version/s: None
    • Component/s: None
    • Labels:
      None
    • Environment:
      OS : Any
      Axiom Version 1.2.5
      Java Runtime version : 1.5

      Description

      Given the following xml fragment

      <ns1:BOSettings xmlns:ns1="http://a.b.c/pro">
      <ns1:ObjectType>X</ns1:ObjectType>
      </ns1:BOSettings>

      Iterator objectTypeIt = bosettings.getChildrenWithName(helper.createQNameForField("ObjectType"));

      invoking

      OMElement element = objectTypeIt.next();

      throws a ClassCastException

      the OMChildrenQNameIterator return the first child which in this case is of type OMText

      the issue can be fixed by first calling hasNext and then next, the hasNext method has a side effect which allows the next to proceed correctly.

      This behavior does not obey the published Iterator documentation, the following is expected Iterator behavior

      Iterator<Integer> it = Arrays.asList(new Integer[]

      { Integer.valueOf(1), Integer.valueOf(2),}

      );

      do
      {
      it.next();
      } while(it.hasNext());

      will work correctly and is the expected behavior.

      Whereas calling it.next on an Iterator instance of type OMChildrenQNameIterator will result in a ClassCastException

        Attachments

        1. _286.diff
          6 kB
          Bhaskar Maddala

          Activity

            People

            • Assignee:
              scheu@us.ibm.com Rich Scheuerle
              Reporter:
              maddalab Bhaskar Maddala
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              Dates

              • Created:
                Updated:
                Resolved: