net.sf.farrago.ojrex
Class FarragoOJRexBuiltinImplementor

java.lang.Object
  net.sf.farrago.ojrex.FarragoOJRexImplementor
      net.sf.farrago.ojrex.FarragoOJRexBuiltinImplementor

All Implemented Interfaces:

OJRexImplementor

public class FarragoOJRexBuiltinImplementor
extends FarragoOJRexImplementor

FarragoOJRexBuiltinImplementor implements Farrago specifics of OJRexImplementor for builtin functions

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/ojrex/FarragoOJRexBuiltinImplementor.java#18 $

Author:

Xiaoyang Luo

Nested Class Summary

static class

FarragoOJRexBuiltinImplementor.Function Enumeration of SQL operators that can be implemented in OJ.

Field Summary

protected FarragoOJRexBuiltinImplementor.Function

builtinFunction

Constructor Summary

FarragoOJRexBuiltinImplementor(FarragoOJRexBuiltinImplementor.Function function)

Method Summary

private StatementList	getThrowStatementList(FarragoOJRexBuiltinImplementor.Function function)
private void	implementAbs(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementChangeCase(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementConcat(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementExp(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
Expression	implementFarrago(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands) Refined version of OJRexImplementor.implement(org.eigenbase.oj.rex.RexToOJTranslator, org.eigenbase.rex.RexCall, openjava.ptree.Expression[]).
protected void	implementFloorCeil(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementLog(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementMod(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementOverlay(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementPower(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementSubstring(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)
private void	implementTrim(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Variable varResult, StatementList stmtList)

Methods inherited from class net.sf.farrago.ojrex.FarragoOJRexImplementor

canImplement, implement

Methods inherited from class java.lang.Object

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

Field Detail

builtinFunction

protected final FarragoOJRexBuiltinImplementor.Function builtinFunction

Constructor Detail

FarragoOJRexBuiltinImplementor

public FarragoOJRexBuiltinImplementor(FarragoOJRexBuiltinImplementor.Function function)

Method Detail

implementFarrago

public Expression implementFarrago(FarragoRexToOJTranslator translator,
                                   RexCall call,
                                   Expression[] operands)

Description copied from class: FarragoOJRexImplementor

Refined version of OJRexImplementor.implement(org.eigenbase.oj.rex.RexToOJTranslator, org.eigenbase.rex.RexCall, openjava.ptree.Expression[]).

Specified by:

implementFarrago in class FarragoOJRexImplementor

Parameters:

translator - provides Farrago-specific translation context

call - the call to be translated

operands - call's operands, which have already been translated independently

implementLog

private void implementLog(FarragoRexToOJTranslator translator,
                          RexCall call,
                          Expression[] operands,
                          Variable varResult,
                          StatementList stmtList)

implementFloorCeil

protected void implementFloorCeil(FarragoRexToOJTranslator translator,
                                  RexCall call,
                                  Expression[] operands,
                                  Variable varResult,
                                  StatementList stmtList)

implementAbs

private void implementAbs(FarragoRexToOJTranslator translator,
                          RexCall call,
                          Expression[] operands,
                          Variable varResult,
                          StatementList stmtList)

implementPower

private void implementPower(FarragoRexToOJTranslator translator,
                            RexCall call,
                            Expression[] operands,
                            Variable varResult,
                            StatementList stmtList)

Reference to SQL:2003 standard:

Part 2 Section 6.27 General Rule 12

implementExp

private void implementExp(FarragoRexToOJTranslator translator,
                          RexCall call,
                          Expression[] operands,
                          Variable varResult,
                          StatementList stmtList)

implementMod

private void implementMod(FarragoRexToOJTranslator translator,
                          RexCall call,
                          Expression[] operands,
                          Variable varResult,
                          StatementList stmtList)

Reference to SQL:2003 standard:

Part 2 Section 6.27 General Rule 9

implementSubstring

private void implementSubstring(FarragoRexToOJTranslator translator,
                                RexCall call,
                                Expression[] operands,
                                Variable varResult,
                                StatementList stmtList)

implementOverlay

private void implementOverlay(FarragoRexToOJTranslator translator,
                              RexCall call,
                              Expression[] operands,
                              Variable varResult,
                              StatementList stmtList)

implementConcat

private void implementConcat(FarragoRexToOJTranslator translator,
                             RexCall call,
                             Expression[] operands,
                             Variable varResult,
                             StatementList stmtList)

implementChangeCase

private void implementChangeCase(FarragoRexToOJTranslator translator,
                                 RexCall call,
                                 Expression[] operands,
                                 Variable varResult,
                                 StatementList stmtList)

implementTrim

private void implementTrim(FarragoRexToOJTranslator translator,
                           RexCall call,
                           Expression[] operands,
                           Variable varResult,
                           StatementList stmtList)

getThrowStatementList

private StatementList getThrowStatementList(FarragoOJRexBuiltinImplementor.Function function)