net.sf.farrago.ojrex
Class FarragoOJRexUnaryExpressionImplementor

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

All Implemented Interfaces:

OJRexImplementor

public class FarragoOJRexUnaryExpressionImplementor
extends FarragoOJRexImplementor

FarragoOJRexUnaryExpressionImplementor implements Farrago specifics of OJRexImplementor for row expressions which can be translated to instances of OpenJava UnaryExpression.

Version:

$Id: //open/dev/farrago/src/net/sf/farrago/ojrex/FarragoOJRexUnaryExpressionImplementor.java#12 $

Author:

Angel Chang

Field Summary

private int

ojUnaryExpressionOrdinal

Constructor Summary

FarragoOJRexUnaryExpressionImplementor(int ojUnaryExpressionOrdinal)

Method Summary

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[]).
private Expression	implementNotNull(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands)

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

ojUnaryExpressionOrdinal

private final int ojUnaryExpressionOrdinal

Constructor Detail

FarragoOJRexUnaryExpressionImplementor

public FarragoOJRexUnaryExpressionImplementor(int ojUnaryExpressionOrdinal)

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

implementNotNull

private Expression implementNotNull(FarragoRexToOJTranslator translator,
                                    RexCall call,
                                    Expression[] operands)