org.apache.kylin.query.optrule

Class AggregateProjectReduceRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.kylin.query.optrule.AggregateProjectReduceRule

public class AggregateProjectReduceRule
extends org.apache.calcite.plan.RelOptRule

Reduce project under aggregate which has unused input ref. The aggregate input ref also need rebuild since project expressions changed. Mainly used for the simple aggregates expanded from grouping aggregate by AggregateMultipleExpandRule. With this rule, the rolled up dimensions in aggregate will be reduced, we can use higher layer cuboid data.

Field Summary

Fields

Modifier and Type	Field and Description
static AggregateProjectReduceRule	INSTANCE

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

description, operands, relBuilderFactory

Method Summary

Methods

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

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

Field Detail

INSTANCE

public static final AggregateProjectReduceRule INSTANCE

Method Detail

onMatch

public void onMatch(org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

onMatch in class org.apache.calcite.plan.RelOptRule