org.apache.beam.sdk.extensions.sql.impl.rule

Class BeamCoGBKJoinRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.beam.sdk.extensions.sql.impl.rule.BeamCoGBKJoinRule

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

Rule to convert LogicalJoin node to BeamCoGBKJoinRel node.

This rule is matched when both the inputs to LogicalJoin node have the same Boundedness i.e. either when both the inputs are PCollection.IsBounded.BOUNDED or when both the inputs are PCollection.IsBounded.UNBOUNDED

As BeamSideInputLookupJoinRel also matches this condition when both the inputs are PCollection.IsBounded.BOUNDED, to avoid conflicts, this rule is not matched when any of the inputs to LogicalJoin node are Seekable.

Field Summary

Fields

Modifier and Type	Field and Description
static BeamCoGBKJoinRule	INSTANCE

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

description, operands, relBuilderFactory

Method Summary

Modifier and Type	Method and 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 Detail

INSTANCE

public static final BeamCoGBKJoinRule INSTANCE

Method Detail

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