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GenericServiceReferenceWrapper.java
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GenericServiceReferenceWrapper.java
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/*
* JBoss, Home of Professional Open Source
* Copyright 2009, Red Hat Middleware LLC, and individual contributors
* as indicated by the @author tags. See the copyright.txt file in the
* distribution for a full listing of individual contributors.
*
* This is free software; you can redistribute it and/or modify it
* under the terms of the GNU Lesser General Public License as
* published by the Free Software Foundation; either version 2.1 of
* the License, or (at your option) any later version.
*
* This software is distributed in the hope that it will be useful,
* but WITHOUT ANY WARRANTY; without even the implied warranty of
* MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
* Lesser General Public License for more details.
*
* You should have received a copy of the GNU Lesser General Public
* License along with this software; if not, write to the Free
* Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
* 02110-1301 USA, or see the FSF site: http://www.fsf.org.
*/
package org.jboss.osgi.framework.bundle;
import java.util.Dictionary;
import java.util.Enumeration;
import java.util.HashSet;
import java.util.Set;
import org.jboss.beans.metadata.spi.BeanMetaData;
import org.jboss.dependency.spi.ControllerContext;
import org.jboss.dependency.spi.tracker.ContextTracker;
import org.jboss.dependency.spi.tracker.ContextTracking;
import org.jboss.kernel.plugins.dependency.AbstractKernelControllerContext;
import org.jboss.osgi.framework.plugins.ControllerContextPlugin;
import org.jboss.osgi.framework.util.KernelUtils;
import org.osgi.framework.Bundle;
import org.osgi.framework.Constants;
import org.osgi.framework.ServiceReference;
/**
* A ServiceReference implementation that is backed by a non OSGi
* {@link ControllerContext}. This can be an arbitrary MC bean.
*
* @author <a href="ales.justin@jboss.org">Ales Justin</a>
* @author thomas.diesler@jboss.com
*/
class GenericServiceReferenceWrapper extends ControllerContextHandle implements ServiceReference
{
private AbstractKernelControllerContext context;
private AbstractBundleState bundleState;
private Long serviceId;
public GenericServiceReferenceWrapper(AbstractKernelControllerContext context, AbstractBundleState bundleState)
{
if (context == null)
throw new IllegalArgumentException("Null context");
if (bundleState == null)
throw new IllegalArgumentException("Null bundle state");
this.context = context;
this.bundleState = bundleState;
// The Framework adds the following service properties to the service properties
// * A property named Constants.SERVICE_ID identifying the registration number of the service
// * A property named Constants.OBJECTCLASS containing all the specified classes.
// [TODO ServiceMix] Revisit generic service.id. The service.id influences the
// service order and should not be generated lazily
serviceId = MDRUtils.getId(context);
if (serviceId == null)
serviceId = OSGiServiceState.getNextServiceId();
}
ControllerContext getContext()
{
return context;
}
public Object getProperty(String key)
{
if (key == null)
throw new IllegalArgumentException("Null property key");
Object value;
// [TODO ServiceMix] getProperty(Constants.SERVICE_ID)
if (Constants.SERVICE_ID.equals(key))
{
value = serviceId;
}
// [TODO ServiceMix] getProperty(Constants.OBJECTCLASS)
else if (Constants.OBJECTCLASS.equals(key))
{
value = MDRUtils.getClasses(context);
if (value == null)
{
BeanMetaData bmd = context.getBeanMetaData();
String objectClass = bmd.getBean();
value = new String[] { objectClass };
}
}
else
{
value = MDRUtils.getProperty(context, key, Object.class);
}
return value;
}
public String[] getPropertyKeys()
{
Dictionary<String, Object> dictionary = MDRUtils.getProperties(context);
String[] keys = new String[dictionary.size()];
int i = 0;
Enumeration<String> e = dictionary.keys();
while (e.hasMoreElements())
keys[i++] = e.nextElement();
return keys;
}
public Bundle getBundle()
{
if (KernelUtils.isUnregistered(context))
return null;
return bundleState.getBundleInternal();
}
public Bundle[] getUsingBundles()
{
if (context instanceof ContextTracking)
{
ContextTracking tracking = (ContextTracking)context;
ContextTracker ct = tracking.getContextTracker();
if (ct == null)
return null;
OSGiBundleManager manager = bundleState.getBundleManager();
ControllerContextPlugin plugin = manager.getPlugin(ControllerContextPlugin.class);
Set<Object> users = ct.getUsers(context);
Set<Bundle> bundles = new HashSet<Bundle>();
for (Object user : users)
{
AbstractBundleState abs = plugin.getBundleForUser(user);
bundles.add(abs.getBundleInternal());
}
if (bundles.isEmpty() == false)
return bundles.toArray(new Bundle[bundles.size()]);
}
return null;
}
public boolean isAssignableTo(Bundle bundle, String className)
{
AbstractBundleState targetBundle = AbstractBundleState.assertBundleState(bundle);
return MDRUtils.isAssignableTo(context, bundleState, targetBundle, className);
}
public int compareTo(Object obj)
{
return MDRUtils.compareTo(context, obj);
}
public int hashCode()
{
return context.hashCode();
}
public boolean equals(Object obj)
{
if (obj instanceof GenericServiceReferenceWrapper == false)
return false;
GenericServiceReferenceWrapper other = (GenericServiceReferenceWrapper)obj;
return context == other.context;
}
public String toString()
{
return context.toString();
}
}