org.apache.ojb.broker.query
Class NullCriteria

java.lang.Object
  org.apache.ojb.broker.query.SelectionCriteria
      org.apache.ojb.broker.query.ValueCriteria
          org.apache.ojb.broker.query.NullCriteria

All Implemented Interfaces:

Serializable

public class NullCriteria
extends ValueCriteria

SelectionCriteria for 'is null' and 'is not null'

Version:

$Id: NullCriteria.java,v 1.1 2007-08-24 22:17:36 ewestfal Exp $

Author:

Jakob Braeuchi

See Also:

Serialized Form

Field Summary

Fields inherited from class org.apache.ojb.broker.query.SelectionCriteria

BETWEEN, EQUAL, GREATER, IN, IS_NULL, LESS, LIKE, NOT_BETWEEN, NOT_EQUAL, NOT_GREATER, NOT_IN, NOT_IS_NULL, NOT_LESS, NOT_LIKE

Method Summary

protected boolean	isBindable() answer true if the selection criteria is bindable BRJ: value null is bindable
boolean	isBound() BRJ : Used by the ODMG OQLQuery.bind() operation
String	toString() String representation

Methods inherited from class org.apache.ojb.broker.query.ValueCriteria

getClause

Methods inherited from class org.apache.ojb.broker.query.SelectionCriteria

bind, getAlias, getAttribute, getClassesForPath, getCriteria, getNumberOfExtentsToBind, getPathClasses, getQuery, getUserAlias, getValue, isTranslateAttribute, setAlias, setAlias, setAlias, setBound, setNumberOfExtentsToBind, setValue

Methods inherited from class java.lang.Object

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

Method Detail

toString

public String toString()

Description copied from class: SelectionCriteria

String representation

Overrides:

toString in class SelectionCriteria

isBound

public boolean isBound()

Description copied from class: SelectionCriteria

BRJ : Used by the ODMG OQLQuery.bind() operation

Overrides:

isBound in class SelectionCriteria

Returns:

Returns a boolean indicator

See Also:

SelectionCriteria.isBound()

isBindable

protected boolean isBindable()

Description copied from class: SelectionCriteria

answer true if the selection criteria is bindable BRJ: value null is bindable

Overrides:

isBindable in class SelectionCriteria

See Also:

SelectionCriteria.isBindable()