org.apache.beam.sdk.extensions.sql.zetasql.unnest

Class BeamZetaSqlUnnestRule

java.lang.Object

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRule

org.apache.beam.sdk.extensions.sql.zetasql.unnest.BeamZetaSqlUnnestRule

public class BeamZetaSqlUnnestRule
extends org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRule

A ConverterRule to replace Correlate ZetaSqlUnnest with BeamZetaSqlUnnestRel.

This class is a copy of BeamUnnestRule except that it works on ZetaSqlUnnest instead of Calcite Uncollect.

Details of why unwrapping structs breaks ZetaSQL UNNEST syntax is in https://issues.apache.org/jira/browse/BEAM-10896.

Field Summary

Fields

Modifier and Type	Field and Description
static BeamZetaSqlUnnestRule	INSTANCE

Fields inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRule

description, operands, relBuilderFactory

Method Summary

Modifier and Type	Method and Description
void	onMatch(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRuleCall call)

Methods inherited from class org.apache.beam.vendor.calcite.v1_20_0.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

Methods inherited from class java.lang.Object

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

Field Detail

INSTANCE

public static final BeamZetaSqlUnnestRule INSTANCE

Method Detail

onMatch

public void onMatch(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRuleCall call)

Specified by:

onMatch in class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.plan.RelOptRule