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/*******************************************************************************
* Copyright (c) 1997, 2008 by ProSyst Software GmbH
* http://www.prosyst.com
* 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:
* ProSyst Software GmbH - initial API and implementation
*******************************************************************************/
package org.eclipse.equinox.internal.io.impl;
import java.io.IOException;
import java.util.*;
import javax.microedition.io.Connection;
import org.eclipse.equinox.internal.io.impl.PrivilegedRunner.PrivilegedDispatcher;
import org.osgi.framework.*;
import org.osgi.service.io.ConnectionFactory;
/**
* @author Pavlin Dobrev
* @version 1.0
*/
public class ConnectionFactoryListener implements ServiceListener, PrivilegedDispatcher {
private static Hashtable urlToConN = new Hashtable(5);
private BundleContext bc;
public ConnectionFactoryListener(BundleContext bc) {
this.bc = bc;
try {
bc.addServiceListener(this, '(' + Constants.OBJECTCLASS + '=' + ConnectionFactory.class.getName() + ')');
} catch (InvalidSyntaxException ex) {
// Ignored - syntax is right!
}
}
public void close() {
bc.removeServiceListener(this);
if (!urlToConN.isEmpty()) {
Vector copyV = new Vector(urlToConN.size());
for (Enumeration en = urlToConN.elements(); en.hasMoreElements();) {
copyV.addElement(en.nextElement());
}
for (Enumeration en = copyV.elements(); en.hasMoreElements();) {
ConnectionNotifierImpl cn = (ConnectionNotifierImpl) en.nextElement();
try {
cn.close();
} catch (IOException ex) {
}
}
}
}
static void removeConnectionNotifier(String url) {
urlToConN.remove(url);
}
static int count = 0;
static Connection getConnectionNotifier(String scheme, String url, int mode, boolean timeouts, String filter, int count) throws IOException {
ConnectionNotifierImpl ret = null;
synchronized (urlToConN) {
if (urlToConN.containsKey(url)) {
return (Connection) urlToConN.get(url);
}
ret = new ConnectionNotifierImpl(scheme, url, mode, timeouts, filter);
urlToConN.put(url, ret);
if (count == ConnectionFactoryListener.count)
return ret;
}
Connection c = ConnectorServiceImpl.getConnection(filter, url, mode, timeouts, false);
if (c != null) {
if (ret.hasListeners())
ret.notifyCreated(c);
else
ret.close();
}
return c;
}
public void serviceChanged(ServiceEvent event) {
if (event.getType() == ServiceEvent.REGISTERED && !urlToConN.isEmpty()) {
ServiceReference ref = event.getServiceReference();
ConnectionFactory factory = (ConnectionFactory) bc.getService(ref);
String[] schemes = (String[]) ref.getProperty(ConnectionFactory.IO_SCHEME);
Vector toNotify = new Vector(urlToConN.size());
synchronized (urlToConN) {
for (Enumeration en = urlToConN.elements(); en.hasMoreElements();) {
ConnectionNotifierImpl cn = (ConnectionNotifierImpl) en.nextElement();
if (match(schemes, cn.scheme))
toNotify.addElement(cn);
}
}
for (int i = 0; i < toNotify.size(); i++) {
ConnectionNotifierImpl cn = (ConnectionNotifierImpl) toNotify.elementAt(i);
try {
if (cn.context != null) {
PrivilegedRunner.doPrivileged(cn.context, this, 0, cn, factory, null, null);
return;
}
Connection connection = factory.createConnection(cn.url, cn.mode, cn.timeouts);
if (cn.hasListeners())
cn.notifyCreated(connection);
else
cn.close();
} catch (Throwable ex) {
ex.printStackTrace();
}
}
bc.ungetService(ref);
}
}
static boolean match(String[] schemes, String scheme) {
if (schemes != null && scheme != null) {
for (int i = 0; i < schemes.length; i++) {
if (scheme.equals(schemes[i])) {
return true;
}
}
}
return false;
}
/**
* @see org.eclipse.equinox.internal.io.impl.PrivilegedRunner.PrivilegedDispatcher#dispatchPrivileged(int,
* java.lang.Object, java.lang.Object, java.lang.Object,
* java.lang.Object)
*/
public Object dispatchPrivileged(int type, Object arg1, Object arg2, Object arg3, Object arg4) throws Exception {
ConnectionNotifierImpl cn = (ConnectionNotifierImpl) arg1;
ConnectionFactory factory = (ConnectionFactory) arg2;
Connection connection = factory.createConnection(cn.url, cn.mode, cn.timeouts);
if (cn.hasListeners()) {
cn.notifyCreated(connection);
} else {
cn.close();
}
return null;
}
}
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