/*
* $Id$
*
* Copyright (C) 2003-2015 JNode.org
*
* This library is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as published
* by the Free Software Foundation; either version 2.1 of the License, or
* (at your option) any later version.
*
* This library 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 Lesser General Public
* License for more details.
*
* You should have received a copy of the GNU Lesser General Public License
* along with this library; If not, write to the Free Software Foundation, Inc.,
* 51 Franklin Street, Fifth Floor, Boston, MA 02110-1301 USA.
*/
package org.jnode.system.repository;
import java.util.ArrayList;
import java.util.List;
import org.jnode.system.repository.spi.SystemRepositoryProvider;
/**
* Implementation of the system repository.
*
* @author Ewout Prangsma (epr@users.sourceforge.net)
*/
final class Repository implements SystemRepository {
/**
* All providers
*/
private final List<SystemRepositoryProvider> providerList = new ArrayList<SystemRepositoryProvider>();
/**
* Array of all providers (duplicate of providerList)
*/
private SystemRepositoryProvider[] providers;
/**
* The linked list of plugins
*/
private final RepositoryPlugin plugins;
/**
* Initialize this instance.
*
* @param plugins
*/
public Repository(RepositoryPlugin plugins) {
this.plugins = plugins;
}
/**
* Start this repository
*/
public void start() {
RepositoryPlugin p = plugins;
while (p != null) {
p.start();
p = p.getNext();
}
}
/**
* Start this repository
*/
public void stop() {
RepositoryPlugin p = plugins;
while (p != null) {
p.stop();
p = p.getNext();
}
}
/**
* @see org.jnode.system.repository.SystemRepository
* #addProvider(org.jnode.system.repository.spi.SystemRepositoryProvider)
*/
public void addProvider(SystemRepositoryProvider provider) {
SystemRepositoryProvider[] arr;
synchronized (this) {
providerList.remove(provider);
arr = getProviderArray();
}
RepositoryPlugin p = plugins;
while (p != null) {
p.providerAdded(arr, provider);
p = p.getNext();
}
}
/**
* @see org.jnode.system.repository.SystemRepository
* #removeProvider(org.jnode.system.repository.spi.SystemRepositoryProvider)
*/
public void removeProvider(SystemRepositoryProvider provider) {
SystemRepositoryProvider[] arr;
synchronized (this) {
providerList.remove(provider);
arr = getProviderArray();
}
RepositoryPlugin p = plugins;
while (p != null) {
p.providerAdded(arr, provider);
p = p.getNext();
}
}
private final SystemRepositoryProvider[] getProviderArray() {
SystemRepositoryProvider[] arr = this.providers;
if (arr == null) {
arr = new SystemRepositoryProvider[providerList.size()];
providerList.toArray(arr);
this.providers = arr;
}
return arr;
}
}