openwfe.org.query.item.OrQueryItem Maven / Gradle / Ivy
/*
* Copyright (c) 2005, John Mettraux, OpenWFE.org
* All rights reserved.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
*
* . Redistributions of source code must retain the above copyright notice, this
* list of conditions and the following disclaimer.
*
* . Redistributions in binary form must reproduce the above copyright notice,
* this list of conditions and the following disclaimer in the documentation
* and/or other materials provided with the distribution.
*
* . Neither the name of the "OpenWFE" nor the names of its contributors may be
* used to endorse or promote products derived from this software without
* specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE COPYRIGHT HOLDERS AND CONTRIBUTORS "AS IS"
* AND ANY EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE
* IMPLIED WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE
* ARE DISCLAIMED. IN NO EVENT SHALL THE COPYRIGHT OWNER OR CONTRIBUTORS BE
* LIABLE FOR ANY DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR
* CONSEQUENTIAL DAMAGES (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF
* SUBSTITUTE GOODS OR SERVICES; LOSS OF USE, DATA, OR PROFITS; OR BUSINESS
* INTERRUPTION) HOWEVER CAUSED AND ON ANY THEORY OF LIABILITY, WHETHER IN
* CONTRACT, STRICT LIABILITY, OR TORT (INCLUDING NEGLIGENCE OR OTHERWISE)
* ARISING IN ANY WAY OUT OF THE USE OF THIS SOFTWARE, EVEN IF ADVISED OF THE
* POSSIBILITY OF SUCH DAMAGE.
*
* $Id: OrQueryItem.java 1882 2005-05-17 16:41:07Z jmettraux $
*/
//
// OrQueryItem.java
//
// [email protected]
//
// generated with
// jtmpl 1.1.01 2004/05/19 ([email protected])
//
package openwfe.org.query.item;
import openwfe.org.query.QueryException;
import openwfe.org.query.QueryConfiguration;
import openwfe.org.query.sets.Set;
import openwfe.org.query.sets.SetUtils;
/**
* A basic implementation of an 'or' (union).
*
* CVS Info :
*
$Author: jmettraux $
*
$Id: OrQueryItem.java 1882 2005-05-17 16:41:07Z jmettraux $
*
* @author [email protected]
*/
public abstract class OrQueryItem
extends CompositeQueryItem
{
/*
private final static org.apache.log4j.Logger log = org.apache.log4j.Logger
.getLogger(OrQueryItem.class.getName());
*/
//
// CONSTANTS & co
//
// FIELDS
//
// CONSTRUCTORS
//
// METHODS from QueryItem
public Set query (final Object o)
throws QueryException
{
if (getChildren() == null || getChildren().size() < 1) return null;
Set result = null;
final java.util.Iterator it = getChildren().iterator();
while (it.hasNext())
{
final QueryItem qi = (QueryItem)it.next();
if (result == null)
result = qi.query(o);
else
result = SetUtils.doUnion(result, qi.query(o));
}
return result;
}
public boolean validate (final Object o)
throws QueryException
{
//log.debug("validate()");
if (getChildren() == null || getChildren().size() < 1)
{
//log.debug("validate() no children : returning false");
return false;
}
final java.util.Iterator it = getChildren().iterator();
while (it.hasNext())
{
final QueryItem qi = (QueryItem)it.next();
if (qi.validate(o)) return true;
}
//log.debug("validate() finally returning false");
return false;
}
public String toString ()
{
final StringBuffer sb = new StringBuffer();
sb.append("<");
sb.append(this.getClass().getName());
sb.append("::or>\n");
final java.util.Iterator it = getChildren().iterator();
while (it.hasNext())
{
final QueryItem qi = (QueryItem)it.next();
sb.append(qi.toString());
}
sb.append("\n");
return sb.toString();
}
//
// METHODS
//
// STATIC METHODS
}