EVEDemo.SWEEP
Class RelationList

java.lang.Object
  |
  +--EVEDemo.SWEEP.RelationList

public class RelationList

extends java.lang.Object

implements java.io.Serializable

RelationList The Relation here must be unique. P.S. If the Relations with different Alias, they are different

See Also:

Serialized Form

Field Summary

(package private) java.util.Vector

RList

Constructor Summary

RelationList()

Method Summary

void	add(Relation R) Add One Relation in the Relation list.
void	drop(Relation R) Drop One Relation in the Relation List.
boolean	find(Relation R) This function will find the EXACT Relation.
java.lang.String	getSQL() Return the a part of SQL back.

Methods inherited from class java.lang.Object

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

Field Detail

RList

java.util.Vector RList

Constructor Detail

RelationList

public RelationList()

Method Detail

add

public void add(Relation R)
         throws java.lang.Exception

Add One Relation in the Relation list.

drop

public void drop(Relation R)
          throws java.lang.Exception

Drop One Relation in the Relation List. This function will only drop the EXACTLY Relation from the Relation List Not by name(, alias). So, it should be another drop(String RName).

find

public boolean find(Relation R)
             throws java.lang.Exception

This function will find the EXACT Relation.

getSQL

public java.lang.String getSQL()

Return the a part of SQL back. The SQL is used for CreateViewUpdate, to make the view at the first time. E.g If we have view definition like: ... FROM R1, R2 ..., then it return "R1, R2"