Package org.apache.felix.das

Source Code of org.apache.felix.das.Activator

/*
* Licensed to the Apache Software Foundation (ASF) under one
* or more contributor license agreements.  See the NOTICE file
* distributed with this work for additional information
* regarding copyright ownership.  The ASF licenses this file
* to you under the Apache License, Version 2.0 (the
* "License"); you may not use this file except in compliance
* with the License.  You may obtain a copy of the License at
*
*   http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing,
* software distributed under the License is distributed on an
* "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY
* KIND, either express or implied.  See the License for the
* specific language governing permissions and limitations
* under the License.
*/
package org.apache.felix.das;


import org.apache.felix.das.util.Util;
import org.apache.felix.dm.Component;
import org.apache.felix.dm.DependencyActivatorBase;
import org.apache.felix.dm.DependencyManager;
import org.osgi.framework.BundleContext;
import org.osgi.framework.Constants;
import org.osgi.service.device.Device;
import org.osgi.service.device.Driver;
import org.osgi.service.device.DriverLocator;
import org.osgi.service.device.DriverSelector;
import org.osgi.service.log.LogService;


/**
* TODO: add javadoc
*
* @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a>
*/
public class Activator extends DependencyActivatorBase
{

    /** the bundle context */
    private volatile BundleContext m_context;

    /** the dependency manager */
    private volatile DependencyManager m_manager;

    /** the device manager */
    private DeviceManager m_deviceManager;


    /**
     * Here, we create and start the device manager, but we do not register it
     * within the framework, since that is not specified by the specification.
     *
     * @see org.apache.felix.dependencymanager.DependencyActivatorBase#init(org.osgi.framework.BundleContext,
     *      org.apache.felix.dependencymanager.DependencyManager)
     */
    public void init( BundleContext context, DependencyManager manager ) throws Exception
    {

        m_context = context;
        m_manager = manager;

        m_deviceManager = new DeviceManager( m_context );

        // the real device manager
        startDeviceManager();

    }


    private void startDeviceManager() {

        final String driverFilter = Util.createFilterString( "(%s=%s)", new String[]
            { org.osgi.service.device.Constants.DRIVER_ID, "*" } );

        final String deviceFilter = Util.createFilterString( "(|(%s=%s)(&(%s=%s)(%s=%s)))", new String[]
            {
          Constants.OBJECTCLASS, Device.class.getName(),
          Constants.OBJECTCLASS, "*",
          org.osgi.service.device.Constants.DEVICE_CATEGORY, "*"
          } );

        Component svc = createComponent();

        svc.setImplementation( m_deviceManager );

        svc.add( createServiceDependency().setService( LogService.class ).setRequired( false ) );

        svc.add( createServiceDependency().setService( DriverSelector.class ).setRequired( false ).setAutoConfig( false )
        .setCallbacks( "selectorAdded", "selectorRemoved" ) );

        svc.add( createServiceDependency().setService( DriverLocator.class ).setRequired( false ).setAutoConfig( false )
            .setCallbacks( "locatorAdded", "locatorRemoved" ) );
       
        svc.add( createServiceDependency().setService( Driver.class, driverFilter ).setRequired( false )
        .setCallbacks( "driverAdded", "driverModified", "driverRemoved" ) );
       
        svc.add( createServiceDependency().setService( deviceFilter ).setRequired( false )
        .setCallbacks( "deviceAdded", "deviceModified", "deviceRemoved" ) );
       
        m_manager.add( svc );

    }


    public void destroy( BundleContext context, DependencyManager manager ) throws Exception
    {
        // TODO Auto-generated method stub

    }

}
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