Package org.apache.calcite.sql2rel

Class ReflectiveConvertletTable

java.lang.Object

org.apache.calcite.sql2rel.ReflectiveConvertletTable

All Implemented Interfaces:

SqlRexConvertletTable

Direct Known Subclasses:

StandardConvertletTable

public class ReflectiveConvertletTable
extends Object
implements SqlRexConvertletTable

Implementation of SqlRexConvertletTable which uses reflection to call any method of the form public RexNode convertXxx(ConvertletContext, SqlNode) or public RexNode convertXxx(ConvertletContext, SqlOperator, SqlCall).

Constructor Summary

Constructors

Constructor	Description
ReflectiveConvertletTable()

Method Summary

Modifier and Type	Method	Description
protected void	addAlias(SqlOperator alias, SqlOperator target)	Registers that one operator is an alias for another.
@Nullable SqlRexConvertlet	get(SqlCall call)	Returns the convertlet applicable to a given expression.
protected void	registerOp(SqlOperator op, SqlRexConvertlet convertlet)	Registers a convertlet for a given operator instance.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

ReflectiveConvertletTable

public ReflectiveConvertletTable()

Method Details

get

public @Nullable SqlRexConvertlet get(SqlCall call)

Description copied from interface: SqlRexConvertletTable

Returns the convertlet applicable to a given expression.

Specified by:

get in interface SqlRexConvertletTable

registerOp

protected void registerOp(@UnderInitialization ReflectiveConvertletTable this,
 SqlOperator op,
 SqlRexConvertlet convertlet)

Registers a convertlet for a given operator instance.

Parameters:

op - Operator instance, say SqlStdOperatorTable.MINUS

convertlet - Convertlet

addAlias

protected void addAlias(@UnderInitialization ReflectiveConvertletTable this,
 SqlOperator alias,
 SqlOperator target)

Registers that one operator is an alias for another.

Parameters:

alias - Operator which is alias

target - Operator to translate calls to