org.nuiton.wikitty.query.conditions
Class Select

java.lang.Object
  org.nuiton.wikitty.query.conditions.AbstractCondition
      org.nuiton.wikitty.query.conditions.ContainerOperator
          org.nuiton.wikitty.query.conditions.ContainerUnaryOperator
              org.nuiton.wikitty.query.conditions.Select

All Implemented Interfaces:

Serializable, Condition, ConditionValue

public class Select
extends ContainerUnaryOperator
implements ConditionValue

Cette condition n'accept pas d'etre utilise dans une autre condition. Il sert a demander l'extraction d'un autre champs que l'id. Si la valeur du champs est retrouvee plusieurs fois, cette valeur n'apparaitra qu'une seule fois dans les resultats (comme 'DISTINCT' en SQL)

Il y a donc deux types d'utilisation possible

 SELECT extName.fieldName WHERE condition
 condition ... IN (SELECT extName.fieldName WHERE other condition)
 

Version:

$Revision: 1463 $ Last update: $Date: 2012-04-05 18:08:38 +0200 (jeu, 05 avr 2012) $ by : $Author: bpoussin $

Author:

poussin

See Also:

Serialized Form

Field Summary

protected Aggregate	aggregate
protected Element	element

Fields inherited from class org.nuiton.wikitty.query.conditions.ContainerUnaryOperator

subCondition

Constructor Summary

Select(Element element)

Select(Element element, Aggregate aggregate)

Select(Element element, Aggregate aggregate, Condition restriction)

Select(Element element, Condition restriction)

Method Summary

Aggregate	getAggregate()
Element	getElement()

Methods inherited from class org.nuiton.wikitty.query.conditions.ContainerUnaryOperator

accept, addCondition, getSubCondition, waitCondition

Methods inherited from class org.nuiton.wikitty.query.conditions.AbstractCondition

copy, equals, hashCode, toString

Methods inherited from class java.lang.Object

clone, finalize, getClass, notify, notifyAll, wait, wait, wait

Methods inherited from interface org.nuiton.wikitty.query.conditions.Condition

accept, addCondition, copy, waitCondition

Field Detail

aggregate

protected Aggregate aggregate

element

protected Element element

Constructor Detail

Select

public Select(Element element)

Select

public Select(Element element,
              Aggregate aggregate)

Select

public Select(Element element,
              Condition restriction)

Select

public Select(Element element,
              Aggregate aggregate,
              Condition restriction)

Method Detail

getAggregate

public Aggregate getAggregate()

getElement

public Element getElement()