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

Class BeamZetaSqlUncollectRule

java.lang.Object

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

org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.convert.ConverterRule

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

public class BeamZetaSqlUncollectRule
extends org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.convert.ConverterRule

A ConverterRule to replace ZetaSqlUnnest with BeamZetaSqlUncollectRel.

This class is a copy of BeamUncollectRel 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 BeamZetaSqlUncollectRule	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
org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode	convert(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode rel)

Methods inherited from class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.convert.ConverterRule

getInTrait, getOutConvention, getOutTrait, getTraitDef, isGuaranteed, onMatch

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, 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 BeamZetaSqlUncollectRule INSTANCE

Method Detail

convert

public org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode convert(org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.RelNode rel)

Specified by:

convert in class org.apache.beam.vendor.calcite.v1_20_0.org.apache.calcite.rel.convert.ConverterRule