Examples of org.eigenbase.rel.JoinInfo

org.eigenbase.rel.JoinInfo
An analyzed join condition.
It is useful for the many algorithms that care whether a join is an equi-join.
You can create one using {@link #of}, or call {@link JoinRelBase#analyzeCondition()}; many kinds of join cache their join info, especially those that are equi-joins and sub-class {@link org.eigenbase.rel.rules.EquiJoinRel}.
@see JoinRelBase#analyzeCondition()

    final BitSet rightBits = BitSets.range(left.getRowType().getFieldCount(),
        join.getRowType().getFieldCount());
    if (bits.intersects(rightBits)) {
      return;
    }
    final JoinInfo joinInfo = join.analyzeCondition();
    if (!joinInfo.rightSet().equals(BitSets.range(aggregate.getGroupCount()))) {
      // Rule requires that aggregate key to be the same as the join key.
      // By the way, neither a super-set nor a sub-set would work.
      return;
    }
    final List<Integer> newRightKeys = Lists.newArrayList();

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    final BitSet rightBits = BitSets.range(left.getRowType().getFieldCount(),
        join.getRowType().getFieldCount());
    if (bits.intersects(rightBits)) {
      return;
    }
    final JoinInfo joinInfo = join.analyzeCondition();
    if (!joinInfo.rightSet().equals(BitSets.range(aggregate.getGroupCount()))) {
      // Rule requires that aggregate key to be the same as the join key.
      // By the way, neither a super-set nor a sub-set would work.
      return;
    }
    final List<Integer> newRightKeys = Lists.newArrayList();

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Related Classes of org.eigenbase.rel.JoinInfo

org.eigenbase.rel.rules.SemiJoinRule

org.eigenbase.rex.RexNode

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