- Direct Known Subclasses:
public abstract class AbstractJoinExtractFilterRule extends RelOptRuleRule to convert an
inner jointo a
filteron top of a
cartesian inner join.
One benefit of this transformation is that after it, the join condition can be combined with conditions and expressions above the join. It also makes the
The constructor is parameterized to allow any sub-class of
All Methods Instance Methods Concrete Methods Modifier and Type Method Description
onMatch(RelOptRuleCall call)Receives notification about a rule match.
Methods inherited from class org.apache.calcite.plan.RelOptRule
any, convert, convert, convertList, convertOperand, convertOperand, equals, equals, getOperand, getOperands, getOutConvention, getOutTrait, hashCode, matches, none, operand, operand, operand, operand, operand, operandJ, operandJ, some, toString, unordered
public void onMatch(RelOptRuleCall call)Description copied from class:
RelOptRuleReceives notification about a rule match. At the time that this method is called,
call.relsholds the set of relational expressions which match the operands to the rule;
call.relsis the root expression.
Typically a rule would check that the nodes are valid matches, creates a new expression, then calls back
RelOptRuleCall.transformTo(org.apache.calcite.rel.RelNode, java.util.Map<org.apache.calcite.rel.RelNode, org.apache.calcite.rel.RelNode>)to register the expression.