//
// Informa -- RSS Library for Java
// Copyright (c) 2002 by Niko Schmuck
//
// Niko Schmuck
// http://sourceforge.net/projects/informa
// mailto:niko_schmuck@users.sourceforge.net
//
// This library is free software.
//
// You may redistribute it and/or modify it under the terms of the GNU
// Lesser General Public License as published by the Free Software Foundation.
//
// Version 2.1 of the license should be included with this distribution in
// the file LICENSE. If the license is not included with this distribution,
// you may find a copy at the FSF web site at 'www.gnu.org' or 'www.fsf.org',
// or you may write to the Free Software Foundation, 675 Mass Ave, Cambridge,
// MA 02139 USA.
//
// This library is distributed in the hope that it will be useful,
// but WITHOUT ANY WARRANTY; without even the implied waranty of
// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
// Lesser General Public License for more details.
//
// $Id: ChannelGroup.java,v 1.11 2006/12/04 23:42:31 italobb Exp $
package de.nava.informa.impl.basic;
import de.nava.informa.core.ChannelGroupIF;
import de.nava.informa.core.ChannelIF;
import java.util.Collection;
import java.util.ArrayList;
import java.util.Iterator;
import java.util.List;
/**
* In-Memory implementation of the ChannelGroupIF interface.
*
* @author Niko Schmuck (niko@nava.de)
*/
public class ChannelGroup implements ChannelGroupIF {
private static final long serialVersionUID = -4037744833783193972L;
private long id;
private String title;
private Collection<ChannelIF> channels;
private ChannelGroupIF parent;
private List<ChannelGroupIF> children;
public ChannelGroup() {
this("[Unknown title]");
}
public ChannelGroup(String title) {
this(IdGenerator.getInstance().getId(), null, title);
}
public ChannelGroup(long id, String title) {
this(id, null, title);
}
public ChannelGroup(long id, ChannelGroupIF parent, String title) {
this.id = id;
this.title = title;
this.channels = new ArrayList<ChannelIF>();
this.parent = parent;
this.children = new ArrayList<ChannelGroupIF>();
}
// --------------------------------------------------------------
// implementation of ChannelGroupIF interface
// --------------------------------------------------------------
public long getId() {
return id;
}
public void setId(long id) {
this.id = id;
}
public String getTitle() {
return title;
}
public void setTitle(String title) {
this.title = title;
}
public void add(ChannelIF channel) {
channels.add(channel);
}
public void remove(ChannelIF channel) {
channels.remove(channel);
}
public Collection<ChannelIF> getAll() {
return channels;
}
public ChannelIF getById(long id) {
Iterator it = channels.iterator();
while (it.hasNext()) {
ChannelIF channel = (ChannelIF) it.next();
if (channel.getId() == id) {
return channel;
}
}
return null;
}
public ChannelGroupIF getParent() {
return parent;
}
public void setParent(ChannelGroupIF parent) {
this.parent = parent;
}
public Collection getChildren() {
return children;
}
public void addChild(ChannelGroupIF child) {
children.add(child);
child.setParent(this);
}
public void removeChild(ChannelGroupIF child) {
children.remove(child);
}
// ----------------------------------------------------------------------
// overwrite default method implementation from Object
// ----------------------------------------------------------------------
public String toString() {
return "[ChannelGroup (" + id + ")]";
}
}