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/*******************************************************************************
* Copyright (c) 2004, 2007 Boeing.
* All rights reserved. This program and the accompanying materials
* are made available under the terms of the Eclipse Public License v1.0
* which accompanies this distribution, and is available at
* http://www.eclipse.org/legal/epl-v10.html
*
* Contributors:
* Boeing - initial API and implementation
*******************************************************************************/
package org.eclipse.osee.connection.service.internal;
import java.util.ArrayList;
import java.util.Collection;
import java.util.Collections;
import java.util.HashSet;
import java.util.List;
import java.util.logging.Level;
import org.eclipse.osee.connection.service.IConnectionService;
import org.eclipse.osee.connection.service.IConnectorFilter;
import org.eclipse.osee.connection.service.IConnectorListener;
import org.eclipse.osee.connection.service.IServiceConnector;
class ConnectionServiceImpl implements IConnectionService {
private final HashSet<IServiceConnector> connectors = new HashSet<IServiceConnector>();
private final EventNotifier eventNotifier = new EventNotifier();
private boolean isStopped = false;
@Override
public void addConnector(IServiceConnector connector) {
addConnectors(Collections.singletonList(connector));
}
@Override
public synchronized void addConnectors(Collection<IServiceConnector> connectors) {
checkState();
this.connectors.addAll(connectors);
eventNotifier.notifyConnectorsAdded(connectors);
}
@Override
public synchronized void addListener(IConnectorListener listener) {
checkState();
eventNotifier.addListener(listener);
listener.onConnectorsAdded(connectors);
}
@Override
public synchronized List<IServiceConnector> findConnectors(IConnectorFilter[] filterChain) {
checkState();
ArrayList<IServiceConnector> matchingConnectors = new ArrayList<IServiceConnector>();
for (IServiceConnector connector : connectors) {
boolean accepted = true;
for (IConnectorFilter filter : filterChain) {
if (!filter.accept(connector)) {
accepted = false;
break;
}
}
if (accepted) {
matchingConnectors.add(connector);
}
}
return matchingConnectors;
}
@Override
public synchronized Collection<IServiceConnector> getAllConnectors() {
checkState();
return connectors;
}
@Override
public synchronized void removeConnector(IServiceConnector connector) throws Exception {
checkState();
if (connectors.remove(connector)) {
eventNotifier.notifyConnectorRemoved(connector);
connector.stop();
}
}
@Override
public synchronized void removeListener(IConnectorListener listener) {
checkState();
eventNotifier.removeListener(listener);
}
void stop() {
isStopped = true;
eventNotifier.notifyServiceStopped();
for (IServiceConnector connector : connectors) {
try {
connector.stop();
} catch (Exception ex) {
Activator.log(Level.SEVERE, "Exception notifying listener of service stop", ex);
}
}
connectors.clear();
}
private void checkState() throws IllegalStateException {
if (isStopped) {
throw new IllegalStateException("service has been stopped");
}
}
@Override
public boolean isStopped() {
return isStopped;
}
}
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