示例#1
0
 private void finished() {
   if (!finished) {
     finished = true;
     for (LinkableEvaluation pendingEval = pendingEvaluationHead;
         pendingEval != null;
         pendingEval = pendingEval.next) pendingEval.removeListener(this);
     pendingEvaluationHead = pendingEvaluationTail = null;
     fireFinished();
   }
 }
示例#2
0
 @Override
 protected void dispose() {
   if (nodeSetListener != null) {
     for (LongTreeMap.Entry<Object> entry = result.firstEntry();
         entry != null;
         entry = entry.next()) nodeSetListener.discard(entry.getKey());
   }
   manuallyExpired = true;
   for (LinkableEvaluation pendingEval = pendingEvaluationHead;
       pendingEval != null;
       pendingEval = pendingEval.next) pendingEval.removeListener(this);
   pendingEvaluationHead = pendingEvaluationTail = null;
   if (predicateResult == null) predicateEvaluation.removeListener(this);
 }
示例#3
0
  private void resultPrepared() {
    if (!resultPrepared) {
      manuallyExpired = true;
      resultPrepared = true;

      for (LinkableEvaluation pendingEval = pendingEvaluationHead;
          pendingEval != null;
          pendingEval = pendingEval.next) pendingEval.removeListener(this);
      pendingEvaluationHead = pendingEvaluationTail = null;
    }
    if (predicateResult != null
        && (index != 0 || (stringEvaluations == null || stringEvaluations.size() == 0))) finished();
    else if (result.size() == 0
        && predicateResult
            == null) { // when result is empty, there is no need to wait for predicateEvaluation to
                       // finish
      Expression predicate = predicateEvaluation.expression;
      if (predicate.scope() != Scope.DOCUMENT) predicateEvaluation.removeListener(this);
      else event.removeListener(predicate, this);
      finished();
    }
  }
示例#4
0
  @Override
  public final void finished(Evaluation evaluation) {
    assert !finished : "can't consume evaluation result after finish";

    if (evaluation == predicateEvaluation) {
      predicateResult = (Boolean) evaluation.getResult();
      assert predicateResult != null : "evaluation result should be non-null";
      if (predicateResult == Boolean.FALSE) {
        if (nodeSetListener != null) {
          for (LongTreeMap.Entry<Object> entry = result.firstEntry();
              entry != null;
              entry = entry.next()) nodeSetListener.discard(entry.getKey());
        }
        result.clear();
        if (stringEvaluations != null) {
          for (Evaluation stringEval : stringEvaluations) stringEval.removeListener(this);
          stringEvaluations = null;
        }
        resultPrepared();
      } else {
        if (predicateChain != -1) decreasePredicateChain();
        if (resultPrepared) finished();
      }
    } else if (evaluation instanceof PredicateEvaluation) {
      PredicateEvaluation predicateEvaluation = (PredicateEvaluation) evaluation;
      remove(predicateEvaluation);

      if (predicateEvaluation.result != null) {
        Object resultItem = predicateEvaluation.result;
        if (resultItem instanceof Evaluation) {
          Evaluation stringEval = (Evaluation) resultItem;
          stringEvaluations.add(stringEval);
          stringEval.addListener(this);
        }
        consumeChildEvaluation(predicateEvaluation.order, resultItem);
      } else {
        if (nodeSetListener != null) nodeSetListener.discard(predicateEvaluation.order);
        consumedResult();
      }
    } else if (evaluation instanceof LocationEvaluation) {
      LocationEvaluation locEval = (LocationEvaluation) evaluation;
      remove(locEval);

      if (locEval.stringEvaluations != null) {
        for (Evaluation stringEval : locEval.stringEvaluations) stringEval.addListener(this);
        stringEvaluations.addAll(locEval.stringEvaluations);
      }
      boolean wasExpired = expired;
      consumeChildEvaluation(locEval.result);
      if (!wasExpired && expired) {
        assert !finished;
        LinkableEvaluation eval = locEval.next;
        while (eval != null) {
          eval.removeListener(this);
          remove(eval);
          eval = eval.next;
        }
        if (pendingEvaluationHead == null) resultPrepared();
      }
    } else {
      stringEvaluations.remove(evaluation);
      consumeChildEvaluation(evaluation.order, evaluation.getResult());
    }
  }