Package lupos.engine.operators.singleinput.filter

Examples of lupos.engine.operators.singleinput.filter.Filter

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    startNode = a;
  }

  @Override
  protected boolean checkPrecondition(final Map<String, BasicOperator> mso) {
    final Filter filter = (Filter) mso.get("filter");
    BasicOperator searchTriplePattern = filter;
    while (searchTriplePattern != null
        && !(searchTriplePattern instanceof TriplePattern)) {
      if (searchTriplePattern.getPrecedingOperators().size() > 1)
        return false;
      searchTriplePattern = searchTriplePattern.getPrecedingOperators()
      .get(0);
    }
    if (searchTriplePattern == null
        || !(searchTriplePattern instanceof TriplePattern))
      return false;
    if (searchTriplePattern.getSucceedingOperators().size() > 1)
      return false;
    triplePattern = (TriplePattern) searchTriplePattern;
    lupos.sparql1_1.Node n = filter.getNodePointer();
    if (n.jjtGetNumChildren() > 0) {
      n = n.jjtGetChild(0);
      if (n instanceof lupos.sparql1_1.ASTEqualsNode) {
        lupos.sparql1_1.Node left = n.jjtGetChild(0);
        lupos.sparql1_1.Node right = n.jjtGetChild(1);
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      final BasicOperator rootOperator) {

    final Collection<BasicOperator> deleted = new LinkedList<BasicOperator>();
    final Collection<BasicOperator> added = new LinkedList<BasicOperator>();

    final Filter filter = (Filter) mso.get("filter");
    final BasicOperator aboveFilter = filter.getPrecedingOperators().get(0);

    aboveFilter.setSucceedingOperators(filter.getSucceedingOperators());

    triplePattern.replace(var, constant);
    triplePattern.replace(varInference, constant);

    final AddBinding addBinding = new AddBinding(var, constant);
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  }

  protected void init() {
    // Define left side of rule
    final Operator a = new Operator();
    final Operator b = new Filter();
    a.setSucceedingOperator(new OperatorIDTuple(b, -1));
    b.setPrecedingOperator(a);

    subGraphMap = new HashMap<BasicOperator, String>();
    subGraphMap.put(a, "operator");
    subGraphMap.put(b, "filter");
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  private AddBinding add;

  @Override
  protected void init() {
    final AddBinding add = new AddBinding(null, null);
    final Filter filter = new Filter();

    add.setSucceedingOperator(new OperatorIDTuple(filter, -1));
    filter.setPrecedingOperator(add);

    subGraphMap = new HashMap<BasicOperator, String>();
    subGraphMap.put(add, "add");
    subGraphMap.put(filter, "filter");
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  }

  @Override
  protected boolean checkPrecondition(final Map<String, BasicOperator> mso) {
    add = (AddBinding) mso.get("add");
    final Filter filter = (Filter) mso.get("filter");
   
    if(filter.getPrecedingOperators().size()>1)
      return false;
   
    do {
   
      Variable v=add.getVar();
      Literal l=add.getLiteral();
     
      lupos.sparql1_1.Node n = filter.getNodePointer();
      if (n.jjtGetNumChildren() > 0) {
        n = n.jjtGetChild(0);
        if (n instanceof lupos.sparql1_1.ASTEqualsNode) {
          lupos.sparql1_1.Node left = n.jjtGetChild(0);
          lupos.sparql1_1.Node right = n.jjtGetChild(1);
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  public BasicOperator deserialize(final JSONObject serializedOperator) throws JSONException {
    final JSONObject json = serializedOperator;
    String filtername =  json.getString("expression");
    filtername = filtername.substring(0,filtername.length()-3);
    try {
      return new Filter(filtername);
    } catch (final ParseException e) {
      e.printStackTrace();
    }
    return null;
  }
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  private boolean pipelineBreaker = false;

  private BindingsFactory bindingsFactory = null;

  public void addProjectionElement(final Variable var, final Node constraint) {
    final Filter filter = new Filter(constraint);
    this.projections.put(var, filter);
    if (filter.isPipelineBreaker()) {
      this.pipelineBreaker = true;
    }
  }
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  protected static void addTpsFilter(final Item data,
      final Root ic, final TripleOperator tp, final Item a,
      final Item b, final Item c, final String filter,
      final TriplePattern tp2) {
    try {
      final Filter f = new Filter(filter);
      final Generate g = new Generate(tp, a, b, c);
      f.addSucceedingOperator(new OperatorIDTuple(g, 0));
      tp2.setSucceedingOperator(new OperatorIDTuple(f, 0));
      final Collection<TriplePattern> ctp = new LinkedList<TriplePattern>();
      ctp.add(tp2);
      ic.addSucceedingOperator(new OperatorIDTuple(ic.newIndexScan(
          new OperatorIDTuple(f, 0), ctp, null), 0));
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      final Root ic, final TripleOperator tp, final Item a,
      final Item b, final Item c, final String filter1,
      final String filter2, final TriplePattern tp1,
      final TriplePattern tp2) {
    try {
      final Filter f1 = new Filter(filter1);
      final Filter f2 = new Filter(filter2);
      final Generate g = new Generate(tp, a, b, c);
      final Join join = new Join();
      f1.addSucceedingOperator(new OperatorIDTuple(join, 0));
      f2.addSucceedingOperator(new OperatorIDTuple(join, 1));
      join.addSucceedingOperator(new OperatorIDTuple(g, 0));
      tp1.setSucceedingOperator(new OperatorIDTuple(f1, 0));
      tp2.setSucceedingOperator(new OperatorIDTuple(f2, 0));
      final Collection<TriplePattern> ctp1 = new LinkedList<TriplePattern>();
      ctp1.add(tp1);
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  protected static void addTpsFilter(final Item data,
      final Root ic, final TripleOperator tp, final Item a,
      final Item b, final Item c, final String filter1,
      final TriplePattern tp1, final TriplePattern tp2) {
    try {
      final Filter f1 = new Filter(filter1);
      final Generate g = new Generate(tp, a, b, c);
      final Join join = new Join();
      f1.addSucceedingOperator(new OperatorIDTuple(join, 0));
      join.addSucceedingOperator(new OperatorIDTuple(g, 0));
      tp1.setSucceedingOperator(new OperatorIDTuple(f1, 0));
      tp2.setSucceedingOperator(new OperatorIDTuple(join, 1));
      final Collection<TriplePattern> ctp1 = new LinkedList<TriplePattern>();
      ctp1.add(tp1);
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Related Classes of lupos.engine.operators.singleinput.filter.Filter

  • lupos.datastructures.bindings.Bindings
  • lupos.datastructures.items.Variable
  • lupos.datastructures.queryresult.QueryResult
  • lupos.datastructures.queryresult.QueryResultDebug
  • lupos.distributed.operator.format.FilterFormatter
  • lupos.engine.operators.messages.EndOfEvaluationMessage
  • lupos.engine.operators.rdfs.RudimentaryRDFSchemaInference
  • lupos.engine.operators.singleinput.AddComputedBinding
  • lupos.engine.operators.singleinput.filter.expressionevaluation.EvaluationVisitorImplementation
  • lupos.optimizations.logical.rules.externalontology.RuleConstantPropagationOverJoin
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