osgi-over-slf4j/src/main/java/org/slf4j/osgi/logservice/impl/Activator.java

/*
 * Copyright (c) 2004-2005 QOS.ch
 *
 * All rights reserved.
 *
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 * a copy of this software and associated documentation files (the
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 * the  Software and  that both  the above  copyright notice(s)  and this
 * permission notice appear in supporting documentation.
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 * THE  SOFTWARE IS  PROVIDED  "AS  IS", WITHOUT  WARRANTY  OF ANY  KIND,
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package org.slf4j.osgi.logservice.impl;

import java.util.Properties;

import org.osgi.framework.BundleActivator;
import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceFactory;
import org.osgi.service.log.LogService;

/**
 * <code>Activator</code> implements a simple bundle that registers a
 * {@link LogServiceFactory} for the creation of {@link LogService} implementations.
 *
 * @author John Conlon
 * @author Matt Bishop
 **/
public class Activator implements BundleActivator {
    /**
     *
     * Implements <code>BundleActivator.start()</code> to register a
     * LogServiceFactory.
     *
     * @param bundleContext the framework context for the bundle
     * @throws Exception
     */
    public void start(BundleContext bundleContext) throws Exception {

        Properties props = new Properties();
        props.put("description", "An SLF4J LogService implementation.");
        ServiceFactory factory = new LogServiceFactory();
        bundleContext.registerService(LogService.class.getName(), factory, props);
    }

    /**
     *
     * Implements <code>BundleActivator.stop()</code>.
     *
     * @param bundleContext the framework context for the bundle
     * @throws Exception
     */
    public void stop(BundleContext bundleContext) throws Exception {

        // Note: It is not required that we remove the service here, since
        // the framework will do it automatically.
    }
}