/*
* #!
* Ontopia Engine
* #-
* Copyright (C) 2001 - 2013 The Ontopia Project
* #-
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
* !#
*/
package net.ontopia.utils;
import java.util.HashSet;
import java.util.Iterator;
import java.util.Set;
/**
* INTERNAL: Decider that checks all subdeciders and returns true of one
* of them gives a positive decision.</p>
*
* Note that the decision is shortcircuited when the first decider
* gives a positive decision, the rest is then not checked.</p>
*/
public class OrDecider implements DeciderIF {
protected Set deciders = new HashSet();
public OrDecider(DeciderIF decider) {
this.deciders.add(decider);
}
public OrDecider(Set deciders) {
this.deciders = deciders;
}
/**
* Gets the subdeciders.
*/
public Set getDeciders() {
return deciders;
}
/**
* Add a subdecider.
*/
public void addDecider(DeciderIF decider) {
deciders.add(decider);
}
/**
* Remove a subdecider.
*/
public void removeDecider(DeciderIF decider) {
deciders.remove(decider);
}
public boolean ok(Object object) {
Iterator iter = deciders.iterator();
while (iter.hasNext()) {
DeciderIF decider = (DeciderIF)iter.next();
if (decider.ok(object)) return true;
}
return false;
}
}