org.apache.calcite.adapter.jdbc

Class JdbcRules.JdbcUnionRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

org.apache.calcite.plan.RelRule<ConverterRule.Config>

org.apache.calcite.rel.convert.ConverterRule

org.apache.calcite.adapter.jdbc.JdbcRules.JdbcUnionRule

Enclosing class:

JdbcRules

public static class JdbcRules.JdbcUnionRule
extends ConverterRule

Rule to convert an Union to a JdbcRules.JdbcUnion.

Nested Class Summary

Nested classes/interfaces inherited from class org.apache.calcite.rel.convert.ConverterRule

ConverterRule.Config

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelRule

RelRule.Done, RelRule.MatchHandler<R extends RelOptRule>, RelRule.OperandBuilder, RelRule.OperandDetailBuilder<R extends RelNode>, RelRule.OperandTransform

Nested classes/interfaces inherited from class org.apache.calcite.plan.RelOptRule

RelOptRule.ConverterRelOptRuleOperand

Field Summary

Fields inherited from class org.apache.calcite.rel.convert.ConverterRule

out

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

config

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	JdbcUnionRule(ConverterRule.Config config) Called from the Config.

Method Summary

Modifier and Type	Method and Description
@Nullable RelNode	convert(RelNode rel) Converts a relational expression to the target trait(s) of this rule.
static JdbcRules.JdbcUnionRule	create(JdbcConvention out) Creates a JdbcUnionRule.

Methods inherited from class org.apache.calcite.rel.convert.ConverterRule

getInTrait, getOutConvention, getOutTrait, getTraitDef, isGuaranteed, onMatch

Methods inherited from class 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

Constructor Detail

JdbcUnionRule

protected JdbcUnionRule(ConverterRule.Config config)

Called from the Config.

Method Detail

create

public static JdbcRules.JdbcUnionRule create(JdbcConvention out)

Creates a JdbcUnionRule.

convert

public @Nullable RelNode convert(RelNode rel)

Description copied from class: ConverterRule

Converts a relational expression to the target trait(s) of this rule.

Returns null if conversion is not possible.

Specified by:

convert in class ConverterRule