org.apache.calcite.rel.rules

Class FilterAggregateTransposeRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.rel.rules.FilterAggregateTransposeRule

public class FilterAggregateTransposeRule
extends RelOptRule

Planner rule that pushes a Filter past a Aggregate.

See Also:

AggregateFilterTransposeRule

Field Summary

Fields

Modifier and Type	Field and Description
static FilterAggregateTransposeRule	INSTANCE The default instance of FilterAggregateTransposeRule.

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

description, operands

Constructor Summary

Constructors

Constructor and Description
FilterAggregateTransposeRule(Class<? extends Filter> filterClass, RelFactories.FilterFactory filterFactory, Class<? extends Aggregate> aggregateClass) Creates a PushFilterPastAggRule.

Method Summary

Methods

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

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

any, convert, convert, convertList, 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

Field Detail

INSTANCE

public static final FilterAggregateTransposeRule INSTANCE

The default instance of FilterAggregateTransposeRule.

It matches any kind of agg. or filter

Constructor Detail

FilterAggregateTransposeRule

public FilterAggregateTransposeRule(Class<? extends Filter> filterClass,
                            RelFactories.FilterFactory filterFactory,
                            Class<? extends Aggregate> aggregateClass)

Creates a PushFilterPastAggRule.

If filterFactory is null, creates the same kind of filter as matched in the rule. Similarly aggregateFactory.

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)