net.sf.farrago.ojrex
Class FarragoOJRexBinaryExpressionImplementor

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

All Implemented Interfaces:

OJRexImplementor

public class FarragoOJRexBinaryExpressionImplementor
extends FarragoOJRexImplementor

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

Version:

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

Author:

John V. Sichi

Field Summary

private int

ojBinaryExpressionOrdinal

Constructor Summary

FarragoOJRexBinaryExpressionImplementor(int ojBinaryExpressionOrdinal)

Method Summary

private Statement	checkOverflow(Expression expr, RelDataType returnType)
private Expression	implement3VL(FarragoRexToOJTranslator translator, RexCall call, Expression[] operands, Expression[] valueOperands, Expression varResult, String methodName)
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

ojBinaryExpressionOrdinal

private final int ojBinaryExpressionOrdinal

Constructor Detail

FarragoOJRexBinaryExpressionImplementor

public FarragoOJRexBinaryExpressionImplementor(int ojBinaryExpressionOrdinal)

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

implement3VL

private Expression implement3VL(FarragoRexToOJTranslator translator,
                                RexCall call,
                                Expression[] operands,
                                Expression[] valueOperands,
                                Expression varResult,
                                String methodName)

implementNotNull

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

checkOverflow

private Statement checkOverflow(Expression expr,
                                RelDataType returnType)