How to use

org.custommonkey.xmlunit.DifferenceEngine

constructor

/**
 * Lazily initializes the difference engine if it hasn't been set
 * via a constructor.
 */
private DifferenceEngine getDifferenceEngine() {
  return differenceEngine == null
    ? new DifferenceEngine(this, matchTrackerDelegate)
    : differenceEngine;
}

/**
 * Lazily initializes the difference engine if it hasn't been set
 * via a constructor.
 */
private DifferenceEngineContract getDifferenceEngine() {
  if (differenceEngine == null) {
    if (
      XMLUnit.getIgnoreAttributeOrder()
      &&
      (!usesUnknownElementQualifier()
       || XMLUnit.getCompareUnmatched())
      ) {
      return new NewDifferenceEngine(this, matchTrackerDelegate);
    }
    return new DifferenceEngine(this, matchTrackerDelegate);
  }
  return differenceEngine;
}

  private boolean isdifferent(Document testDoc, Document controlDoc) {
    boolean isdifferent = false;

    XMLUnit.setIgnoreWhitespace(true);
    XMLUnit.setIgnoreComments(true);
    XMLUnit.setNormalize(true);

    Diff myDiff = new Diff(controlDoc, testDoc);
    DetailedDiff myComparisonController = new DetailedDiff(myDiff);
    DifferenceEngine engine = new DifferenceEngine(myComparisonController);
    XmlDifferenceListener listener = new XmlDifferenceListener();
    ElementNameAndAttributeQualifier myElementQualifier =
      new ElementNameAndAttributeQualifier();
    try { //debug
      engine.compare(controlDoc.getDocumentElement(),
        testDoc.getDocumentElement(), listener, myElementQualifier);
    } catch (NullPointerException ne) {
      LOG.error(ne);
    }

    isdifferent =listener.called();
    return isdifferent;
  }
}