org.apache.calcite.adapter.jdbc

Class JdbcToEnumerableConverterRule

java.lang.Object

org.apache.calcite.plan.RelOptRule

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.

Field Summary

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

description, operands, relBuilderFactory

Constructor Summary

Constructors

Constructor and Description
JdbcToEnumerableConverterRule(JdbcConvention out, RelBuilderFactory relBuilderFactory) Creates a JdbcToEnumerableConverterRule.

Method Summary

Modifier and Type	Method and Description
RelNode	convert(RelNode rel) Converts a relational expression to the target trait(s) of this rule.

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, equals, equals, getOperand, getOperands, hashCode, matches, none, operand, operand, operand, operand, operand, some, toString, unordered

Methods inherited from class java.lang.Object

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

Constructor Detail

JdbcToEnumerableConverterRule

public JdbcToEnumerableConverterRule(JdbcConvention out,
                                     RelBuilderFactory relBuilderFactory)

Creates a JdbcToEnumerableConverterRule.

Method Detail

convert

public 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