Examples of org.openrdf.query.algebra.ValueExpr

org.openrdf.query.algebra.ValueExpr
An expressions that evaluates to Value objects.


  @Override
  public Integer visit(ASTWhere node, Object data)
    throws VisitorException
  {
    ValueExpr valueExpr = (ValueExpr)node.getCondition().jjtAccept(this, null);
    graphPattern.addConstraint(valueExpr);
    return null;
  }

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  @Override
  public Var visit(ASTEdge node, Object data)
    throws VisitorException
  {
    ValueExpr arg = (ValueExpr)node.getValueExpr().jjtAccept(this, null);


    if (arg instanceof Var) {
      return (Var)arg;
    }
    else if (arg instanceof ValueConstant) {
      ValueConstant vc = (ValueConstant)arg;
      return createConstantVar(vc.getValue());
    }
    else {
      throw new IllegalArgumentException("Unexpected edge argument type: " + arg.getClass());
    }
  }

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  @Override
  public Var visit(ASTNodeElem node, Object data)
    throws VisitorException
  {
    ValueExpr valueExpr = (ValueExpr)node.getChild().jjtAccept(this, null);


    if (valueExpr instanceof Var) {
      return (Var)valueExpr;
    }
    else if (valueExpr instanceof ValueConstant) {
      ValueConstant vc = (ValueConstant)valueExpr;
      return createConstantVar(vc.getValue());
    }
    else {
      throw new IllegalArgumentException("Unexpected node element result type: " + valueExpr.getClass());
    }
  }

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  public ValueExpr visit(ASTOr node, Object data)
    throws VisitorException
  {
    Iterator<ASTBooleanExpr> iter = node.getOperandList().iterator();


    ValueExpr result = (ValueExpr)iter.next().jjtAccept(this, null);


    while (iter.hasNext()) {
      ValueExpr operand = (ValueExpr)iter.next().jjtAccept(this, null);
      result = new Or(result, operand);
    }


    return result;
  }

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  public ValueExpr visit(ASTAnd node, Object data)
    throws VisitorException
  {
    Iterator<ASTBooleanExpr> iter = node.getOperandList().iterator();


    ValueExpr result = (ValueExpr)iter.next().jjtAccept(this, null);


    while (iter.hasNext()) {
      ValueExpr operand = (ValueExpr)iter.next().jjtAccept(this, null);
      result = new And(result, operand);
    }


    return result;
  }

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  @Override
  public Compare visit(ASTCompare node, Object data)
    throws VisitorException
  {
    ValueExpr leftArg = (ValueExpr)node.getLeftOperand().jjtAccept(this, null);
    ValueExpr rightArg = (ValueExpr)node.getRightOperand().jjtAccept(this, null);
    CompareOp operator = node.getOperator().getValue();


    return new Compare(leftArg, rightArg, operator);
  }

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  @Override
  public CompareAny visit(ASTCompareAny node, Object data)
    throws VisitorException
  {
    ValueExpr valueExpr = (ValueExpr)node.getLeftOperand().jjtAccept(this, null);
    TupleExpr tupleExpr = (TupleExpr)node.getRightOperand().jjtAccept(this, null);
    CompareOp op = node.getOperator().getValue();


    return new CompareAny(valueExpr, tupleExpr, op);
  }

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  @Override
  public CompareAll visit(ASTCompareAll node, Object data)
    throws VisitorException
  {
    ValueExpr valueExpr = (ValueExpr)node.getLeftOperand().jjtAccept(this, null);
    TupleExpr tupleExpr = (TupleExpr)node.getRightOperand().jjtAccept(this, null);
    CompareOp op = node.getOperator().getValue();


    return new CompareAll(valueExpr, tupleExpr, op);
  }

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  @Override
  public Like visit(ASTLike node, Object data)
    throws VisitorException
  {
    ValueExpr expr = (ValueExpr)node.getValueExpr().jjtAccept(this, null);
    String pattern = (String)node.getPattern().jjtAccept(this, null);
    boolean caseSensitive = !node.ignoreCase();


    return new Like(expr, pattern, caseSensitive);
  }

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  @Override
  public In visit(ASTIn node, Object data)
    throws VisitorException
  {
    ValueExpr valueExpr = (ValueExpr)node.getLeftOperand().jjtAccept(this, null);
    TupleExpr tupleExpr = (TupleExpr)node.getRightOperand().jjtAccept(this, null);
    return new In(valueExpr, tupleExpr);
  }

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edu.mit.simile.backstage.model.data.Path

edu.mit.simile.backstage.model.TupleQueryBuilder

edu.mit.simile.backstage.model.ui.facets.ListFacet

org.openrdf.query.algebra.evaluation.cursors.GroupCursor

org.openrdf.query.algebra.evaluation.impl.CompareOptimizer$CompareVisitor

org.openrdf.query.algebra.evaluation.impl.ConjunctiveConstraintSplitter$ConstraintVisitor

org.openrdf.query.algebra.evaluation.impl.EvaluationStrategyImpl

org.openrdf.query.algebra.evaluation.impl.QueryModelPruner$TreeSanitizer

org.openrdf.query.algebra.evaluation.impl.SameTermFilterOptimizer$SameTermFilterVisitor

org.openrdf.query.algebra.evaluation.iterator.GroupIterator

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