org.eigenbase.oj.rex
Class OJRexIgnoredCallImplementor

java.lang.Object
  org.eigenbase.oj.rex.OJRexIgnoredCallImplementor

All Implemented Interfaces:

OJRexImplementor

public class OJRexIgnoredCallImplementor
extends Object
implements OJRexImplementor

OJRexIgnoredCallImplementor implements OJRexImplementor by completely ignoring a call and returning its one and only operand.

Version:

$Id: //open/dev/farrago/src/org/eigenbase/oj/rex/OJRexIgnoredCallImplementor.java#9 $

Author:

John V. Sichi

Constructor Summary

OJRexIgnoredCallImplementor()

Method Summary

boolean	canImplement(RexCall call) Tests whether it is possible to implement a call.
Expression	implement(RexToOJTranslator translator, RexCall call, Expression[] operands) Implements a single RexCall.

Methods inherited from class java.lang.Object

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

Constructor Detail

OJRexIgnoredCallImplementor

public OJRexIgnoredCallImplementor()

Method Detail

implement

public Expression implement(RexToOJTranslator translator,
                            RexCall call,
                            Expression[] operands)

Description copied from interface: OJRexImplementor

Implements a single RexCall.

Specified by:

implement in interface OJRexImplementor

Parameters:

translator - provides translation context

call - the call to be translated

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

canImplement

public boolean canImplement(RexCall call)

Description copied from interface: OJRexImplementor

Tests whether it is possible to implement a call.

Specified by:

canImplement in interface OJRexImplementor

Parameters:

call - the call for which translation is being considered

Returns:

whether the call can be implemented