org.apache.calcite.rex

Class RexSqlStandardConvertletTable

java.lang.Object

org.apache.calcite.rex.RexSqlReflectiveConvertletTable

org.apache.calcite.rex.RexSqlStandardConvertletTable

All Implemented Interfaces:

RexSqlConvertletTable

public class RexSqlStandardConvertletTable
extends RexSqlReflectiveConvertletTable

Standard implementation of RexSqlConvertletTable.

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
private class	RexSqlStandardConvertletTable.EquivConvertlet Convertlet that converts a SqlCall to a RexCall of the same operator.

Constructor Summary

Constructors

Constructor and Description
RexSqlStandardConvertletTable()

Method Summary

Modifier and Type	Method and Description
SqlNode	convertCall(RexToSqlNodeConverter converter, RexCall call) Converts a call to an operator into a SqlCall to the same operator.
private SqlNode[]	convertExpressionList(RexToSqlNodeConverter converter, List<RexNode> nodes)
private void	registerCaseOp(SqlOperator op) Creates and registers a convertlet for the CASE operator, which takes different forms for SQL vs Rex.
protected void	registerEquivOp(SqlOperator op) Creates and registers a convertlet for an operator in which the SQL and Rex representations are structurally equivalent.
private void	registerTypeAppendOp(SqlOperator op) Creates and registers a convertlet for an operator in which the SQL representation needs the result type appended as an extra argument (e.g.

Methods inherited from class org.apache.calcite.rex.RexSqlReflectiveConvertletTable

get, registerOp

Methods inherited from class java.lang.Object

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

Constructor Detail

RexSqlStandardConvertletTable

public RexSqlStandardConvertletTable()

Method Detail

convertCall

public SqlNode convertCall(RexToSqlNodeConverter converter,
                           RexCall call)

Converts a call to an operator into a SqlCall to the same operator.

Called automatically via reflection.

Parameters:

converter - Converter

call - Call

Returns:

Sql call

convertExpressionList

private SqlNode[] convertExpressionList(RexToSqlNodeConverter converter,
                                        List<RexNode> nodes)

registerEquivOp

protected void registerEquivOp(SqlOperator op)

Creates and registers a convertlet for an operator in which the SQL and Rex representations are structurally equivalent.

Parameters:

op - operator instance

registerTypeAppendOp

private void registerTypeAppendOp(SqlOperator op)

Creates and registers a convertlet for an operator in which the SQL representation needs the result type appended as an extra argument (e.g. CAST).

Parameters:

op - operator instance

registerCaseOp

private void registerCaseOp(SqlOperator op)

Creates and registers a convertlet for the CASE operator, which takes different forms for SQL vs Rex.

Parameters:

op - instance of CASE operator