Package org.apache.drill.common.expression.IfExpression

Examples of org.apache.drill.common.expression.IfExpression.IfCondition

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  @Override
  public Void visitIfExpression(IfExpression ifExpr, StringBuilder sb) throws RuntimeException {
    ImmutableList<IfCondition> conditions = ifExpr.conditions;
    sb.append(" ( ");
    for(int i =0; i < conditions.size(); i++){
      IfCondition c = conditions.get(i);
      if(i !=0) sb.append(" else ");
      sb.append("if (");
      c.condition.accept(this, sb);
      sb.append(" ) then (");
      c.expression.accept(this, sb);
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      HoldingContainer output = generator.declare(ifExpr.getMajorType());

      JConditional jc = null;
      JBlock conditionalBlock = new JBlock(false, false);
      IfCondition c = ifExpr.ifCondition;

      HoldingContainer holdingContainer = c.condition.accept(this, generator);
      if (jc == null) {
        if (holdingContainer.isOptional()) {
          jc = conditionalBlock._if(holdingContainer.getIsSet().eq(JExpr.lit(1)).cand(holdingContainer.getValue().eq(JExpr.lit(1))));
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          assert caseArgs.size()%2 == 1;
          LogicalExpression elseExpression = caseArgs.get(0);
          for (int i=1; i<caseArgs.size(); i=i+2) {
            elseExpression = IfExpression.newBuilder()
              .setElse(elseExpression)
              .setIfCondition(new IfCondition(caseArgs.get(i + 1), caseArgs.get(i))).build();
          }
          return elseExpression;
        }

        if (call.getOperator() == SqlStdOperatorTable.ITEM) {
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  @Override
  public Void visitIfExpression(IfExpression ifExpr, StringBuilder sb) throws RuntimeException {

    // serialize the if expression
    sb.append(" ( ");
    IfCondition c = ifExpr.ifCondition;
    sb.append("if (");
    c.condition.accept(this, sb);
    sb.append(" ) then (");
    c.expression.accept(this, sb);
    sb.append(" ) ");
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    return false;
  }

  @Override
  public Boolean visitIfExpression(IfExpression ifExpr, ErrorCollector errors) {
    IfCondition c = ifExpr.ifCondition;
    if (c.condition.accept(this, errors) || c.expression.accept(this, errors)) {
      return true;
    }
    return ifExpr.elseExpression.accept(this, errors);
  }
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    return true;
  }

  @Override
  public Boolean visitIfExpression(IfExpression ifExpr, ErrorCollector errors) {
    IfCondition c = ifExpr.ifCondition;
    if (!c.condition.accept(this, errors) || !c.expression.accept(this, errors)) {
      return false;
    }

    if (!ifExpr.elseExpression.accept(this, errors)) {
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  @Override
  public LogicalExpression visitIfExpression(IfExpression ifExpr, Void value) throws RuntimeException{
    LogicalExpression newElseExpr = ifExpr.elseExpression.accept(this, value);
    IfCondition conditions = ifExpr.ifCondition;

    LogicalExpression newCondition = conditions.condition.accept(this, value);
    LogicalExpression newExpr = conditions.expression.accept(this, value);
    conditions = new IfExpression.IfCondition(newCondition, newExpr);
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  }

  @Override
  public Void visitIfExpression(IfExpression ifExpr, ErrorCollector errors) throws RuntimeException {
    // confirm that all conditions are required boolean values.
    IfCondition cond = ifExpr.ifCondition;
    MajorType majorType = cond.condition.getMajorType();
    if ( majorType
        .getMinorType() != MinorType.BIT) {
      errors
          .addGeneralError(
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      HoldingContainer output = generator.declare(ifExpr.getMajorType());

      JConditional jc = null;
      JBlock conditionalBlock = new JBlock(false, false);
      IfCondition c = ifExpr.ifCondition;

      HoldingContainer holdingContainer = c.condition.accept(this, generator);
      if (jc == null) {
        if (holdingContainer.isOptional()) {
          jc = conditionalBlock._if(holdingContainer.getIsSet().eq(JExpr.lit(1)).cand(holdingContainer.getValue().eq(JExpr.lit(1))));
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          assert caseArgs.size()%2 == 1;
          LogicalExpression elseExpression = caseArgs.get(0);
          for (int i=1; i<caseArgs.size(); i=i+2) {
            elseExpression = IfExpression.newBuilder()
              .setElse(elseExpression)
              .setIfCondition(new IfCondition(caseArgs.get(i + 1), caseArgs.get(i))).build();
          }
          return elseExpression;
        }

        if (call.getOperator() == SqlStdOperatorTable.ITEM) {
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Related Classes of org.apache.drill.common.expression.IfExpression.IfCondition

  • org.apache.drill.common.expression.ExpressionStringBuilder
  • org.apache.drill.common.expression.visitors.AggregateChecker
  • org.apache.drill.common.expression.visitors.ConditionalExprOptimizer
  • org.apache.drill.common.expression.visitors.ConstantChecker
  • org.apache.drill.common.expression.visitors.ExpressionValidator
  • org.apache.drill.exec.expr.EvaluationVisitor$EvalVisitor
  • org.apache.drill.exec.planner.logical.DrillOptiq$RexToDrill
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