/*
* Aphelion
* Copyright (c) 2013 Joris van der Wel
*
* This file is part of Aphelion
*
* Aphelion is free software: you can redistribute it and/or modify
* it under the terms of the GNU Affero General Public License as published by
* the Free Software Foundation, version 3 of the License.
*
* Aphelion is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
* GNU General Public License for more details.
*
* You should have received a copy of the GNU Affero General Public License
* along with Aphelion. If not, see <http://www.gnu.org/licenses/>.
*
* In addition, the following supplemental terms apply, based on section 7 of
* the GNU Affero General Public License (version 3):
* a) Preservation of all legal notices and author attributions
* b) Prohibition of misrepresentation of the origin of this material, and
* modified versions are required to be marked in reasonable ways as
* different from the original version (for example by appending a copyright notice).
*
* Linking this library statically or dynamically with other modules is making a
* combined work based on this library. Thus, the terms and conditions of the
* GNU Affero General Public License cover the whole combination.
*
* As a special exception, the copyright holders of this library give you
* permission to link this library with independent modules to produce an
* executable, regardless of the license terms of these independent modules,
* and to copy and distribute the resulting executable under terms of your
* choice, provided that you also meet, for each linked independent module,
* the terms and conditions of the license of that module. An independent
* module is a module which is not derived from or based on this library.
*/
package aphelion.shared.swissarmyknife;
import java.util.ArrayList;
/**
*
* @author Joris
*/
public class AttachmentConsumer<A extends Attachable, TYPE>
{
private AttachmentManager manager;
private int index;
public AttachmentConsumer(AttachmentManager manager)
{
this.manager = manager;
this.index = manager.consumers.size();
manager.consumers.add(this);
}
@SuppressWarnings("unchecked")
public synchronized TYPE get(A attachable)
{
if (attachable == null)
{
return null;
}
ArrayList list = attachable.getAttachments().data;
if (index >= list.size())
{
return null;
}
return (TYPE) list.get(index);
}
@SuppressWarnings("unchecked")
public synchronized void set(A attachable, TYPE data)
{
if (attachable == null)
{
throw new IllegalArgumentException();
}
ArrayList list = attachable.getAttachments().data;
list.ensureCapacity(index+1);
while(list.size() < index+1)
{
list.add(null);
}
list.set(index, data);
}
}