org.apache.calcite.rel.rules

Class ReduceExpressionsRule.JoinReduceExpressionsRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.rel.rules.ReduceExpressionsRule

org.apache.calcite.rel.rules.ReduceExpressionsRule.JoinReduceExpressionsRule

Enclosing class:

ReduceExpressionsRule

public static class ReduceExpressionsRule.JoinReduceExpressionsRule
extends ReduceExpressionsRule

Rule that reduces constants inside a Join.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.rules.ReduceExpressionsRule

ReduceExpressionsRule.CalcReduceExpressionsRule, ReduceExpressionsRule.CaseShuttle, ReduceExpressionsRule.FilterReduceExpressionsRule, ReduceExpressionsRule.JoinReduceExpressionsRule, ReduceExpressionsRule.ProjectReduceExpressionsRule, ReduceExpressionsRule.ReducibleExprLocator, ReduceExpressionsRule.RexReplacer

Field Summary

Fields inherited from class org.apache.calcite.rel.rules.ReduceExpressionsRule

CALC_INSTANCE, EXCLUSION_PATTERN, FILTER_INSTANCE, JOIN_INSTANCE, matchNullability, PROJECT_INSTANCE

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
JoinReduceExpressionsRule(Class<? extends Join> joinClass, boolean matchNullability, RelBuilderFactory relBuilderFactory)
JoinReduceExpressionsRule(Class<? extends Join> joinClass, RelBuilderFactory relBuilderFactory) Deprecated.

Method Summary

Modifier and Type	Method and Description
void	onMatch(RelOptRuleCall call) Receives notification about a rule match.

Methods inherited from class org.apache.calcite.rel.rules.ReduceExpressionsRule

findReducibleExps, predicateConstants, pushPredicateIntoCase, reduceExpressions, reduceExpressions, reduceExpressions, reduceExpressionsInternal, substitute

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

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

Methods inherited from class java.lang.Object

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

Constructor Detail

JoinReduceExpressionsRule

@Deprecated
public JoinReduceExpressionsRule(Class<? extends Join> joinClass,
                                             RelBuilderFactory relBuilderFactory)

Deprecated.

JoinReduceExpressionsRule

public JoinReduceExpressionsRule(Class<? extends Join> joinClass,
                                 boolean matchNullability,
                                 RelBuilderFactory relBuilderFactory)

Method Detail

onMatch

public void onMatch(RelOptRuleCall call)

Description copied from class: RelOptRule

Receives notification about a rule match. At the time that this method is called, call.rels holds the set of relational expressions which match the operands to the rule; call.rels[0] is 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.

Specified by:

onMatch in class RelOptRule

Parameters:

call - Rule call

See Also:

RelOptRule.matches(RelOptRuleCall)