Package EDU.oswego.cs.dl.util.concurrent

Examples of EDU.oswego.cs.dl.util.concurrent.WaitFreeQueue$Node

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  }

 
  @Override
  public void insertFederatedQueryOperator(final ASTService node, final OperatorConnection connection){
    Node child0 = node.jjtGetChild(0);
    if (child0 instanceof ASTVar) {
      Join join = new Join();
      connection.connect(join);
      SeveralSucceedingOperators sso = new SeveralSucceedingOperators();
      sso.addSucceedingOperator(join, 0);
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      while(n.jjtGetParent()!=null && !(n instanceof ASTGraphConstraint)){
        n = n.jjtGetParent();
      }
      String additionalGraphVariable = "";
      if(n instanceof ASTGraphConstraint){
        final Node child0 = n.jjtGetChild(0);
        if(child0 instanceof ASTVar) {
          additionalGraphVariable = " " + ((ASTVar)child0).toQueryString();
        }
      }
      // intermediate Strings are used for the special queries
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  @Override
  public Object evaluate(final ASTFunctionCall node, final Bindings b, final Map<Node, Object> d) throws TypeErrorException, NotBoundException {
    final Literal name = LazyLiteral.getLiteral(node.jjtGetChild(0));
    final ExternalFunction externalFunction = EvaluationVisitorImplementation.externalFunctions.get(name);
    if(externalFunction!=null){
      final Node child1 = node.jjtGetChild(1);
      final int number = child1.jjtGetNumChildren();
      final Object[] args = new Object[number];
      for(int i=0; i<number; i++){
        args[i] = child1.jjtGetChild(i).accept(this, b, d);
      }
      return externalFunction.evaluate(args);
    }
    if (name.toString().startsWith("<http://www.w3.org/2001/XMLSchema#")) {
      return Helper.cast(name.toString(), this.resultOfChildZero(node.jjtGetChild(1), b, d));
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      final Map<Node, Object> d) throws NotBoundException, TypeErrorException {
    if (node.jjtGetNumChildren() == 0) {
      return "";
    }
    // jump over ASTExpressionList!
    final Node child0 = node.jjtGetChild(0);
    if (child0 instanceof ASTNIL || child0.jjtGetNumChildren() == 0) {
      return "";
    }
    Object result = Helper.unlazy(child0.jjtGetChild(0).accept(this, b, d));
    if (Helper.isNumeric(result)) {
      return null;
    }
    for (int i = 1; i < child0.jjtGetNumChildren(); i++) {

      final Object child = Helper.unlazy(child0.jjtGetChild(i).accept(this, b, d));

      if (Helper.isNumeric(child)) {
        return null;
      }
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      return !this.handleInAndNotIn(node, b, d);
  }

  protected boolean handleInAndNotIn(final Node node, final Bindings b, final Map<Node, Object> d) throws NotBoundException, TypeErrorException {
    final Object arg1 = Helper.unlazy(this.resultOfChildZero(node, b, d));
    final Node child1 = node.jjtGetChild(1);
    for(int i=0; i<child1.jjtGetNumChildren(); i++) {
      final Object arg2 = Helper.unlazy(child1.jjtGetChild(i).accept(this, b, d));
      if(Helper.equals(arg1, arg2)) {
        return true;
      }
    }
    return false;
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    }
  }

  @Override
  public Object evaluate(final ASTCoalesceFuncNode node, final Bindings b, final Map<Node, Object> d) throws NotBoundException, TypeErrorException {
    final Node child0 = node.jjtGetChild(0);
    for(int i=0; i<child0.jjtGetNumChildren(); i++){
      try {
        return Helper.unlazy(child0.jjtGetChild(i).accept(this, b, d));
      } catch(final Error e){
        // ignore...
      } catch(final Exception e){
        // ignore...
      }
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  public void visit(final ASTWindow node, final OperatorConnection connection, final Item graphConstraint) {
    ASTType.TYPE dot = ASTType.TYPE.TRIPLES;
    int slidingNumber = 10;
    Literal iri = null;
    for (int i = 0; i < node.jjtGetNumChildren(); i++) {
      final Node n = node.jjtGetChild(i);
      if (n instanceof ASTType) {
        dot = ((ASTType) n).getType();
        slidingNumber = ((ASTType) n).getValue();
        if(dot == ASTType.TYPE.INSTANCESDURATION || dot == ASTType.TYPE.INSTANCESNUMBER){
          iri = ((ASTQuotedURIRef)n.jjtGetChild(0)).getLiteral(true);
        }
      }
    }
    final Window window;
    switch(dot){
      default:
      case TRIPLES:
        window = new WindowTriples(slidingNumber);
        break;
      case DURATION:
        window = new WindowDuration(slidingNumber);
        break;
      case INSTANCESNUMBER:
        window = new WindowInstancesNumber(slidingNumber, iri);
        break;
      case INSTANCESDURATION:
        window = new WindowInstancesDuration(slidingNumber, iri);
        break;
    }
    if (this.indexScanCreator_Stream.getStream() == null) {
      System.out.println("Query uses Window operations, but did not define a stream, asssuming STREAM INTERMEDIATERESULT TRIPLES 1");
      final CollectResult cr = new CollectResult(false);
      this.result.addApplication(cr);
      this.indexScanCreator_Stream.setStream(new StreamTriples(cr, 1));
    }
    this.indexScanCreator_Stream.getStream().addSucceedingOperator(new OperatorIDTuple(window, 0));
    final PatternMatcher currentPatternMatcher = new PatternMatcher();
    window.addSucceedingOperator(new OperatorIDTuple(currentPatternMatcher, 0));
    final PatternMatcher oldPatternMatcher = this.indexScanCreator_Stream.getCurrentPatternMatcher();
    this.indexScanCreator_Stream.setCurrentPatternMatcher(currentPatternMatcher);
    for (int i = 0; i < node.jjtGetNumChildren(); i++) {
      final Node n = node.jjtGetChild(i);
      if (!(n instanceof ASTType)) {
        n.accept(this, connection, graphConstraint);
      }
    }
    this.indexScanCreator_Stream.setCurrentPatternMatcher(oldPatternMatcher);
  }
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        this.visit((ASTStream)node.jjtGetChild(i));
      }
    }

    int index;
    final Node child0 = node.jjtGetChild(0);
    if(child0 instanceof ASTConstructTemplate){
      this.setGraphConstraints(child0, connection);
      index=1;
    } else {
      index=0;
      for (int i = index; i < node.jjtGetNumChildren(); i++) {
        final Node childi = node.jjtGetChild(i);
        if(childi instanceof ASTGroupConstraint) {
          this.setGraphConstraints(childi, connection);
        }
      }
    }
    for (int i = index; i < node.jjtGetNumChildren(); i++) {
      final Node childi = node.jjtGetChild(i);
      if(childi instanceof ASTGroupConstraint) {
        childi.accept(this, connection, null);
      } else {
        if(!(childi instanceof ASTStream)){
          childi.accept(this, connection);
        }
      }
    }
  }
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      final Construct c = new Construct();
      c.setTemplates(operators);
      graphConstructs.add(new Tuple<Construct, Item>(c, null));
    }
    for(int i=0; i<node.jjtGetNumChildren();i++){
      final Node child = node.jjtGetChild(i);
      if(child instanceof ASTGraphConstraint){
        final Collection<TriplePattern> otp = this.collectTriplePatternOfChildren(child);
        if(otp.size()>0){
          final Construct c2 = new Construct();
          c2.setTemplates(otp);
          final Node childchild=child.jjtGetChild(0);
          Item item=null;
          if (childchild instanceof ASTQuotedURIRef) {
            try {
              item=LiteralFactory.createURILiteralWithoutLazyLiteral("<"+ childchild.toString() + ">");
            } catch (final Exception e) {
              System.err.println(e);
            }
          } else if(childchild instanceof ASTVar){
            item = new Variable(((ASTVar)childchild).getName());
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  }

  public Collection<TriplePattern> collectTriplePatternOfChildren(final Node node){
    final Collection<TriplePattern> resultantTriplePatterns = new LinkedList<TriplePattern>();
    for(int i=0; i<node.jjtGetNumChildren(); i++){
      final Node child = node.jjtGetChild(i);
      if(child instanceof ASTTripleSet){
        resultantTriplePatterns.add(this.getTriplePattern((ASTTripleSet)child));
      }
    }
    return resultantTriplePatterns;
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