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/****************************************************************************
* Copyright (c) 2005, 2010 Jan S. Rellermeyer, Systems Group,
* Department of Computer Science, ETH Zurich and others.
* 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:
* Jan S. Rellermeyer - initial API and implementation
* Markus Alexander Kuppe - enhancements and bug fixes
* Md.Jamal MohiUddin (Ubiquitous Computing, C-DAC Hyderabad) - IPv6 support
* P Sowjanya (Ubiquitous Computing, C-DAC Hyderabad) - IPv6 support
*
*****************************************************************************/
package ch.ethz.iks.slp;
import java.util.Locale;
import ch.ethz.iks.slp.impl.SLPCore;
import ch.ethz.iks.slp.impl.StandalonePlatformAbstraction;
/**
* The central manager for SLP interaction. Application can get a Locator for UA
* functionality and a Advertiser for SA functionality.
*
* @author Jan S. Rellermeyer, ETH Zurich
* @since 0.1
*/
public final class ServiceLocationManager extends SLPCore {
/**
* hidden default constructor.
*/
private ServiceLocationManager() {
}
public static void init() {
if(SLPCore.platform == null) {
SLPCore.platform = new StandalonePlatformAbstraction();
SLPCore.init();
}
}
/**
* get the refresh interval, that is the maximum over all DA's minimum
* update intervals.
*
* @return the refresh interval.
* @throws ServiceLocationException
* in case of an exception in the underlying framework.
*/
public static int getRefreshInterval() throws ServiceLocationException {
return -1;
}
/**
* get a Locator to have access to the UA functionalities.
*
* @param locale
* the <code>Locale</code> for all requests.
* @return a <code>Locator</code> instance.
* @throws ServiceLocationException
* in case of an exception in the underlying framework.
*/
public static Locator getLocator(final Locale locale)
throws ServiceLocationException {
init();
if (locator != null) {
try {
//TODO::We have to Initialize the Multicast Socket for UA also for receiving DA Advt Messages
return (Locator) locator.newInstance(new Object[] { locale });
} catch (Exception e) {
throw new ServiceLocationException(
ServiceLocationException.INTERNAL_SYSTEM_ERROR, e
.getMessage());
}
} else {
throw new ServiceLocationException(
ServiceLocationException.NOT_IMPLEMENTED,
"The current configuration does not support UA functionalities.");
}
}
/**
* get a Advertiser to have access to the SA functionalities.
*
* @param locale
* the <code>Locale</code> for all messages.
* @return an <code>Advertiser</code> instance.
* @throws ServiceLocationException
* in case of an exception in the underlying framework.
*/
public static Advertiser getAdvertiser(final Locale locale)
throws ServiceLocationException {
init();
if (advertiser != null) {
try {
return (Advertiser) advertiser
.newInstance(new Object[] { locale });
} catch (Exception e) {
throw new ServiceLocationException(
ServiceLocationException.INTERNAL_SYSTEM_ERROR, e
.getMessage());
}
} else {
throw new ServiceLocationException(
ServiceLocationException.NOT_IMPLEMENTED,
"The current configuration does not support SA functionalities.");
}
}
}
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