Package org.apache.calcite.adapter.jdbc

Class JdbcToEnumerableConverterRule

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.JdbcToEnumerableConverterRule

public class JdbcToEnumerableConverterRule
extends ConverterRule

Rule to convert a relational expression from JdbcConvention to EnumerableConvention.

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	Description
protected	JdbcToEnumerableConverterRule(ConverterRule.Config config)	Called from the Config.

Method Summary

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

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, 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 Details

JdbcToEnumerableConverterRule

protected JdbcToEnumerableConverterRule(ConverterRule.Config config)

Called from the Config.

Method Details

create

public static JdbcToEnumerableConverterRule create(JdbcConvention out)

Creates a JdbcToEnumerableConverterRule.

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