Package org.apache.flink.table.planner.plan.rules.logical

Class RewriteMultiJoinConditionRule

java.lang.Object
org.apache.calcite.plan.RelOptRule
org.apache.calcite.plan.RelRule<RewriteMultiJoinConditionRule.RewriteMultiJoinConditionRuleConfig>
org.apache.flink.table.planner.plan.rules.logical.RewriteMultiJoinConditionRule
@Enclosing public class RewriteMultiJoinConditionRule extends org.apache.calcite.plan.RelRule<RewriteMultiJoinConditionRule.RewriteMultiJoinConditionRuleConfig>
Planner rule to apply transitive closure on MultiJoin for equi-join predicates.

e.g. MJ(A, B, C) ON A.a1=B.b1 AND B.b1=C.c1 → MJ(A, B, C) ON A.a1=B.b1 AND B.b1=C.c1 AND A.a1=C.c1

The advantage of applying this rule is that it increases the choice of join reorder; at the same time, the disadvantage is that it will use more CPU for additional join predicates.

  • Nested Class Summary

    Nested Classes
    Modifier and Type
    Class
    Description
    static interface 
    RewriteMultiJoinConditionRule.RewriteMultiJoinConditionRuleConfig
    Rule configuration.

    Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

    org.apache.calcite.plan.RelRule.Config, org.apache.calcite.plan.RelRule.Done, org.apache.calcite.plan.RelRule.MatchHandler<R extends org.apache.calcite.plan.RelOptRule>, org.apache.calcite.plan.RelRule.OperandBuilder, org.apache.calcite.plan.RelRule.OperandDetailBuilder<R extends org.apache.calcite.rel.RelNode>, org.apache.calcite.plan.RelRule.OperandTransform

    Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

    org.apache.calcite.plan.RelOptRule.ConverterRelOptRuleOperand

  • Field Summary

    Fields
    Modifier and Type
    Field
    Description
    static final RewriteMultiJoinConditionRule
    INSTANCE
     

    Fields inherited from class org.apache.calcite.plan.RelRule

    config

    Fields inherited from class org.apache.calcite.plan.RelOptRule

    description, operands, relBuilderFactory

  • Method Summary

    Modifier and Type
    Method
    Description
    boolean
    matches(org.apache.calcite.plan.RelOptRuleCall call)
     
    void
    onMatch(org.apache.calcite.plan.RelOptRuleCall call)
     

    Methods inherited from class org.apache.calcite.plan.RelOptRule

    any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered

    Methods inherited from class java.lang.Object

    clone, finalize, getClass, notify, notifyAll, wait, wait, wait

  • Field Details

  • Method Details

    • matches

      public boolean matches(org.apache.calcite.plan.RelOptRuleCall call)
      Overrides:
      matches in class org.apache.calcite.plan.RelOptRule

    • onMatch

      public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)
      Specified by:
      onMatch in class org.apache.calcite.plan.RelOptRule