Examples of org.openrdf.query.algebra.Union

org.openrdf.query.algebra.Union
The UNION set operator, which return the union of the result sets of two tuple expressions.

    throws VisitorException
  {
    TupleExpr leftArg = (TupleExpr)node.getLeftArg().jjtAccept(this, null);
    TupleExpr rightArg = (TupleExpr)node.getRightArg().jjtAccept(this, null);


    TupleExpr result = new Union(leftArg, rightArg);


    if (node.isDistinct()) {
      result = new Distinct(result);
    }

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    graphPattern = new GraphPattern(parentGP);
    node.jjtGetChild(1).jjtAccept(this, null);
    TupleExpr rightArg = graphPattern.buildTupleExpr();


    parentGP.addRequiredTE(new Union(leftArg, rightArg));
    graphPattern = parentGP;


    return null;
  }

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Related Classes of org.openrdf.query.algebra.Union

org.openrdf.query.algebra.evaluation.impl.DisjunctiveConstraintOptimizer$OrSameTermOptimizer

org.openrdf.query.parser.serql.QueryModelBuilder

org.openrdf.query.parser.sparql.TupleExprBuilder

org.openrdf.sail.accesscontrol.AccessControlConnection$AccessControlQueryExpander

org.openrdf.sail.federation.optimizers.FederationJoinOptimizer

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