Package lupos.engine.operators.singleinput.modifiers.distinct

Examples of lupos.engine.operators.singleinput.modifiers.distinct.InMemoryDistinct

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          replaceVari.addSubstitution((Variable)graphConstraint, (Variable)graphConstraint);
        }

        final BasicOperator startingOperator =tripleSet.jjtGetChild(1).jjtGetChild(0).accept(this, connection, graphConstraint, subject, object, subjectNode, objectNode);

        final InMemoryDistinct memoryDistinct = new InMemoryDistinct();
        final Filter filter = new Filter("(" + subject + " != " + object + ")");

        startingOperator.addSucceedingOperator(new OperatorIDTuple(filter,0));
        startingOperator.addSucceedingOperator(connection.getOperatorIDTuple());
        final Join intermediateJoinOperator = new Join();
        replaceVar.addSucceedingOperator(new OperatorIDTuple(memoryDistinct,0));
        memoryDistinct.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,1));
        filter.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,0));
        filter.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        intermediateJoinOperator.addSucceedingOperator(new OperatorIDTuple(replaceVari,0));
        replaceVari.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        replaceVari.addSucceedingOperator(connection.getOperatorIDTuple());
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      final Union union = new Union();
      zeroOperator.addSucceedingOperator(new OperatorIDTuple(union,0));
      startingOperator.addSucceedingOperator(new OperatorIDTuple(union,1));

      final InMemoryDistinct distinct = new InMemoryDistinct();
      union.addSucceedingOperator(new OperatorIDTuple(distinct,0));

      return distinct;
    } else {
      // alternative way to evaluate (...)? without using the PathLengthZero operator!
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      if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
        projection.addProjectionElement((Variable)graphConstraint);
      }

      final Union union = new Union();
      final InMemoryDistinct memoryDistinct = new InMemoryDistinct();
      try {
        final Filter filter = new Filter("(" + subject + " != " + object + ")");

        final ReplaceVar replaceVar = new ReplaceVar();
        replaceVar.addSubstitution(object, subject);
        final Variable variable = this.getVariable(subject.toString(), object.toString(), "interimVariable");
        replaceVar.addSubstitution(variable, object);
        if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
          replaceVar.addSubstitution((Variable)graphConstraint, (Variable)graphConstraint);
        }
        final ReplaceVar replaceVari = new ReplaceVar();
        replaceVari.addSubstitution(subject, subject);
        replaceVari.addSubstitution(object, variable);
        if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
          replaceVari.addSubstitution((Variable)graphConstraint, (Variable)graphConstraint);
        }

        startingOperator.addSucceedingOperator(new OperatorIDTuple(filter,0));
        startingOperator.addSucceedingOperator(new OperatorIDTuple(union,1));
        final Join intermediateJoinOperator = new Join();
        replaceVar.addSucceedingOperator(new OperatorIDTuple(memoryDistinct,0));
        memoryDistinct.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,1));
        filter.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,0));
        filter.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        intermediateJoinOperator.addSucceedingOperator(new OperatorIDTuple(replaceVari,0));
        replaceVari.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        replaceVari.addSucceedingOperator(new OperatorIDTuple(union,1));
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      n.setName(subject.toString().substring(1));
      final Bind bind = new Bind(subject);
      bind.addProjectionElement(object,n);
      union.addSucceedingOperator(new OperatorIDTuple(bind,0));
      bind.addSucceedingOperator(new OperatorIDTuple(projection,0));
      final InMemoryDistinct memoryDistinct = new InMemoryDistinct();
      projection.addSucceedingOperator(new OperatorIDTuple(memoryDistinct,0));
      return memoryDistinct;
    }
  }
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      projection.addProjectionElement(object);
      if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
        projection.addProjectionElement((Variable)graphConstraint);
      }

      final InMemoryDistinct memoryDistinct = new InMemoryDistinct();
      try {
        final Filter filter = new Filter("(" + subject + " != " + object + ")");

        replaceVar.addSubstitution(object, subject);
        final Variable variable = this.getVariable(subject.toString(), object.toString(), "interimVariable");
        replaceVar.addSubstitution(variable, object);
        if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
          replaceVar.addSubstitution((Variable)graphConstraint, (Variable)graphConstraint);
        }
        replaceVari.addSubstitution(subject, subject);
        replaceVari.addSubstitution(object, variable);
        if(graphConstraint!=null && graphConstraint.isVariable() && !graphConstraint.equals(getItem(subjectNode)) && !graphConstraint.equals(getItem(objectNode))) {
          replaceVari.addSubstitution((Variable)graphConstraint, (Variable)graphConstraint);
        }

        startingOperator.addSucceedingOperator(new OperatorIDTuple(filter,0));
        startingOperator.addSucceedingOperator(new OperatorIDTuple(projection,0));
        final Join intermediateJoinOperator = new Join();
        replaceVar.addSucceedingOperator(new OperatorIDTuple(memoryDistinct,0));
        memoryDistinct.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,1));
        filter.addSucceedingOperator(new OperatorIDTuple(intermediateJoinOperator,0));
        filter.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        intermediateJoinOperator.addSucceedingOperator(new OperatorIDTuple(replaceVari,0));
        replaceVari.addSucceedingOperator(new OperatorIDTuple(replaceVar,0));
        replaceVari.addSucceedingOperator(new OperatorIDTuple(projection,0));
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Related Classes of lupos.engine.operators.singleinput.modifiers.distinct.InMemoryDistinct

  • lupos.sparql1_1.operatorgraph.SPARQLCoreParserVisitorImplementation
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