ContextProvider.java

/**
 * 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.aries.jndi;

import javax.naming.Context;
import javax.naming.NamingException;

import org.osgi.framework.BundleContext;
import org.osgi.framework.ServiceReference;

public abstract class ContextProvider {
    private final ServiceReference reference;
    private final BundleContext bc;
    
    public ContextProvider(BundleContext ctx, ServiceReference reference) {
        bc = ctx;
        this.reference = reference;
    }
    
    public boolean isValid() {
        return (reference.getBundle() != null);
    }

    public void close() throws NamingException {
       if (bc != null) bc.ungetService(reference);
    }

    public abstract Context getContext() throws NamingException;
}