vishnu.model.algebra.optimizer
Class AbstractTranslationStage

java.lang.Object
  vishnu.model.algebra.optimizer.AbstractTranslationStage

All Implemented Interfaces:

TranslationStage

Direct Known Subclasses:

ChildVisitorTranslationStage, ParentVisitorTranslationStage

public class AbstractTranslationStage
extends java.lang.Object
implements TranslationStage

Author:

Hernan Rancati

Constructor Summary

AbstractTranslationStage()

Method Summary

void	attach(TranslationStage s)
Relation	perform(Relation r, UserContext c) Contract: subclasses should return super.perform(result)

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractTranslationStage

public AbstractTranslationStage()

Method Detail

perform

public Relation perform(Relation r,
                        UserContext c)

Contract: subclasses should return super.perform(result)

Specified by:

perform in interface TranslationStage

attach

public void attach(TranslationStage s)

Specified by:

attach in interface TranslationStage