/**********************************************************************************
* $URL: https://source.sakaiproject.org/svn/kernel/trunk/kernel-impl/src/main/java/org/sakaiproject/entity/impl/ReferenceVectorComponent.java $
* $Id: ReferenceVectorComponent.java 105077 2012-02-24 22:54:29Z ottenhoff@longsight.com $
***********************************************************************************
*
* Copyright (c) 2003, 2004, 2005, 2006, 2008 Sakai Foundation
*
* Licensed under the Educational Community 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.opensource.org/licenses/ECL-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 org.sakaiproject.entity.impl;
import java.util.Collection;
import java.util.Iterator;
import java.util.Vector;
import org.sakaiproject.entity.api.Entity;
import org.sakaiproject.entity.api.Reference;
/**
* <p>
* ReferenceVectorComponent implements the ReferenceVector API.
* </p>
*/
public class ReferenceVectorComponent extends Vector
{
/**
* Constructor.
*/
public ReferenceVectorComponent(int initialCapacity, int capacityIncrement)
{
super(initialCapacity, capacityIncrement);
}
/**
* Constructor.
*/
public ReferenceVectorComponent(int initialCapacity)
{
super(initialCapacity);
}
/**
* Constructor.
*/
public ReferenceVectorComponent(Collection c)
{
super(c);
}
/**
* Constructor.
*/
public ReferenceVectorComponent()
{
super();
}
/**
* Is this resource referred to in any of the references in the vector? Accept any Resource, or a String assumed to be a resource reference.
*
* @param o
* The Resource (or resource reference string) to check for presence in the references in the vector.
* @return true if the resource referred to in any of the references in the Vector, false if not.
*/
public boolean contains(Object o)
{
if ((o instanceof Entity) || (o instanceof String) || (o instanceof Reference))
{
String ref = null;
if (o instanceof Entity)
{
ref = ((Entity) o).getReference();
}
else if (o instanceof String)
{
ref = (String) o;
}
else
{
ref = ((Reference) o).getReference();
}
Iterator it = iterator();
while (it.hasNext())
{
Reference de = (Reference) it.next();
if (de.getReference().equals(ref)) return true;
}
return false;
}
else
return super.contains(o);
}
/**
* Removes the first occurrence of the specified element in this Vector. If the element is a String, treat it as a resource reference, else it's a Reference object.
*
* @return true if the element was found, false if not.
*/
public boolean remove(Object o)
{
// if a string, treat as a resource reference
if (o instanceof String)
{
String ref = (String) o;
Iterator it = iterator();
while (it.hasNext())
{
Reference de = (Reference) it.next();
if (de.getReference().equals(ref))
{
return super.remove(de);
}
}
return false;
}
return super.remove(o);
}
}