Examples of org.eigenbase.rel.InvalidRelException

org.eigenbase.rel.InvalidRelException
Exception that indicates that a relational expression would be invalid with given parameters.
This exception is thrown by the constructor of a subclass of {@link RelNode} when given parameters it cannot accept. For example,{@code EnumerableJoinRel} can only implement equi-joins, so its constructorthrows {@code InvalidRelException} when given the condition{@code input0.x - input1.y = 2}.

Because the exception is checked (i.e. extends {@link Exception} but not{@link RuntimeException}), constructors that throw this exception will declare this exception in their {@code throws} clause, and rules that createthose relational expressions will need to handle it. Usually a rule will not take the exception personally, and will fail to match. The burden of checking is removed from the rule, which means less code for the author of the rule to maintain.

The caller that receives an {@code InvalidRelException} (typically a ruleattempting to create a relational expression) should log it at {@link java.util.logging.Level#FINE} level.

      JoinRelType joinType) throws InvalidRelException {
    super(cluster, traits, left, right, condition, joinType, Collections.<String> emptySet());


    RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, leftKeys, rightKeys);
    if (!remaining.isAlwaysTrue()) {
      throw new InvalidRelException("DrillJoinRel only supports equi-join");
    }
  }

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  public DrillAggregateRel(RelOptCluster cluster, RelTraitSet traits, RelNode child, BitSet groupSet,
      List<AggregateCall> aggCalls) throws InvalidRelException {
    super(cluster, traits, child, groupSet, aggCalls);
    for (AggregateCall aggCall : aggCalls) {
      if (aggCall.isDistinct()) {
        throw new InvalidRelException("DrillAggregateRel does not support DISTINCT aggregates");
      }
    }
  }

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  public MergeJoinPrel(RelOptCluster cluster, RelTraitSet traits, RelNode left, RelNode right, RexNode condition,
      JoinRelType joinType) throws InvalidRelException {
    super(cluster, traits, left, right, condition, joinType);


    if (condition.isAlwaysTrue()) {
      throw new InvalidRelException("MergeJoinPrel does not support cartesian product join");
    }


    RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, leftKeys, rightKeys);
    if (!remaining.isAlwaysTrue() && (leftKeys.size() == 0 || rightKeys.size() == 0)) {
      throw new InvalidRelException("MergeJoinPrel only supports equi-join");
    }
  }

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  public DrillUnionRelBase(RelOptCluster cluster, RelTraitSet traits,
      List<RelNode> inputs, boolean all) throws InvalidRelException {
    super(cluster, traits, inputs, all);
    // if (! this.isHomogeneous(false /* don't compare names */)) {
    if (! this.isCompatible(false /* don't compare names */, true /* allow substrings */)) {
      throw new InvalidRelException("Input row types of the Union are not compatible.");
    }
  }

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      JoinRelType joinType) throws InvalidRelException {
    super(cluster, traits, left, right, condition, joinType);


    RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, leftKeys, rightKeys);
    if (!remaining.isAlwaysTrue() && (leftKeys.size() == 0 || rightKeys.size() == 0)) {
      throw new InvalidRelException("DrillJoinRel only supports equi-join");
    }
  }

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    if (checkCartesian)  {
      List<Integer> tmpLeftKeys = Lists.newArrayList();
      List<Integer> tmpRightKeys = Lists.newArrayList();
      RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, tmpLeftKeys, tmpRightKeys);
      if (!remaining.isAlwaysTrue() && (tmpLeftKeys.size() == 0 || tmpRightKeys.size() == 0)) {
        throw new InvalidRelException("DrillJoinRel only supports equi-join");
      }
    }
    this.leftKeys = leftKeys;
    this.rightKeys = rightKeys;
  }

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  public DrillUnionRelBase(RelOptCluster cluster, RelTraitSet traits,
      List<RelNode> inputs, boolean all) throws InvalidRelException {
    super(cluster, traits, inputs, all);
    // if (! this.isHomogeneous(false /* don't compare names */)) {
    if (! this.isCompatible(false /* don't compare names */, true /* allow substrings */)) {
      throw new InvalidRelException("Input row types of the Union are not compatible.");
    }
  }

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      JoinRelType joinType) throws InvalidRelException {
    super(cluster, traits, left, right, condition, joinType);


    RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, leftKeys, rightKeys);
    if (!remaining.isAlwaysTrue() && (leftKeys.size() == 0 || rightKeys.size() == 0)) {
      throw new InvalidRelException("DrillJoinRel only supports equi-join");
    }
  }

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    if (checkCartesian)  {
      List<Integer> tmpLeftKeys = Lists.newArrayList();
      List<Integer> tmpRightKeys = Lists.newArrayList();
      RexNode remaining = RelOptUtil.splitJoinCondition(left, right, condition, tmpLeftKeys, tmpRightKeys);
      if (!remaining.isAlwaysTrue() && (tmpLeftKeys.size() == 0 || tmpRightKeys.size() == 0)) {
        throw new InvalidRelException("DrillJoinRel only supports equi-join");
      }
    }
    this.leftKeys = leftKeys;
    this.rightKeys = rightKeys;
  }

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Related Classes of org.eigenbase.rel.InvalidRelException

org.apache.drill.exec.planner.common.DrillUnionRelBase

org.apache.drill.exec.planner.logical.DrillJoinRel

org.apache.drill.exec.planner.physical.MergeJoinPrel

org.apache.drill.optiq.DrillAggregateRel

org.apache.drill.optiq.DrillJoinRel

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