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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a>
<span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a>
<span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a>
<span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a>
<span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a>
<span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a>
<span class="sourceLineNo">009</span> *<a name="line.9"></a>
<span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a>
<span class="sourceLineNo">011</span> *<a name="line.11"></a>
<span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a>
<span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a>
<span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a>
<span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a>
<span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a>
<span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a>
<span class="sourceLineNo">018</span> */<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>package org.apache.felix.ipojo.extender.internal;<a name="line.20"></a>
<span class="sourceLineNo">021</span><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.osgi.framework.BundleContext;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.osgi.framework.ServiceRegistration;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.Dictionary;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>/**<a name="line.27"></a>
<span class="sourceLineNo">028</span> * Common code wrapping an OSGi service.<a name="line.28"></a>
<span class="sourceLineNo">029</span> */<a name="line.29"></a>
<span class="sourceLineNo">030</span>public abstract class AbstractService implements Lifecycle {<a name="line.30"></a>
<span class="sourceLineNo">031</span><a name="line.31"></a>
<span class="sourceLineNo">032</span> /**<a name="line.32"></a>
<span class="sourceLineNo">033</span> * The bundle context.<a name="line.33"></a>
<span class="sourceLineNo">034</span> */<a name="line.34"></a>
<span class="sourceLineNo">035</span> private final BundleContext m_bundleContext;<a name="line.35"></a>
<span class="sourceLineNo">036</span> /**<a name="line.36"></a>
<span class="sourceLineNo">037</span> * The service specification.<a name="line.37"></a>
<span class="sourceLineNo">038</span> */<a name="line.38"></a>
<span class="sourceLineNo">039</span> private final Class&lt;?&gt; m_type;<a name="line.39"></a>
<span class="sourceLineNo">040</span> /**<a name="line.40"></a>
<span class="sourceLineNo">041</span> * The service registration.<a name="line.41"></a>
<span class="sourceLineNo">042</span> */<a name="line.42"></a>
<span class="sourceLineNo">043</span> private ServiceRegistration&lt;?&gt; m_registration;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span><a name="line.45"></a>
<span class="sourceLineNo">046</span> /**<a name="line.46"></a>
<span class="sourceLineNo">047</span> * Constructor.<a name="line.47"></a>
<span class="sourceLineNo">048</span> * This constructor checks that the current class and the service specification are compatible.<a name="line.48"></a>
<span class="sourceLineNo">049</span> *<a name="line.49"></a>
<span class="sourceLineNo">050</span> * @param bundleContext the bundle context<a name="line.50"></a>
<span class="sourceLineNo">051</span> * @param type the specification<a name="line.51"></a>
<span class="sourceLineNo">052</span> */<a name="line.52"></a>
<span class="sourceLineNo">053</span> protected AbstractService(BundleContext bundleContext, Class&lt;?&gt; type) {<a name="line.53"></a>
<span class="sourceLineNo">054</span> m_bundleContext = bundleContext;<a name="line.54"></a>
<span class="sourceLineNo">055</span> if (!type.isAssignableFrom(getClass())) {<a name="line.55"></a>
<span class="sourceLineNo">056</span> throw new IllegalArgumentException("This object is not an instance of " + type.getName());<a name="line.56"></a>
<span class="sourceLineNo">057</span> }<a name="line.57"></a>
<span class="sourceLineNo">058</span> m_type = type;<a name="line.58"></a>
<span class="sourceLineNo">059</span> }<a name="line.59"></a>
<span class="sourceLineNo">060</span><a name="line.60"></a>
<span class="sourceLineNo">061</span> /**<a name="line.61"></a>
<span class="sourceLineNo">062</span> * On start, registers the service.<a name="line.62"></a>
<span class="sourceLineNo">063</span> */<a name="line.63"></a>
<span class="sourceLineNo">064</span> public void start() {<a name="line.64"></a>
<span class="sourceLineNo">065</span> m_registration = registerService();<a name="line.65"></a>
<span class="sourceLineNo">066</span> }<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span> protected ServiceRegistration&lt;?&gt; registerService() {<a name="line.68"></a>
<span class="sourceLineNo">069</span> return m_bundleContext.registerService(m_type.getName(), this, getServiceProperties());<a name="line.69"></a>
<span class="sourceLineNo">070</span> }<a name="line.70"></a>
<span class="sourceLineNo">071</span><a name="line.71"></a>
<span class="sourceLineNo">072</span> /**<a name="line.72"></a>
<span class="sourceLineNo">073</span> * On stop, un-registers the service.<a name="line.73"></a>
<span class="sourceLineNo">074</span> */<a name="line.74"></a>
<span class="sourceLineNo">075</span> public void stop() {<a name="line.75"></a>
<span class="sourceLineNo">076</span> if (m_registration != null) {<a name="line.76"></a>
<span class="sourceLineNo">077</span> m_registration.unregister();<a name="line.77"></a>
<span class="sourceLineNo">078</span> m_registration = null;<a name="line.78"></a>
<span class="sourceLineNo">079</span> }<a name="line.79"></a>
<span class="sourceLineNo">080</span> }<a name="line.80"></a>
<span class="sourceLineNo">081</span><a name="line.81"></a>
<span class="sourceLineNo">082</span> /**<a name="line.82"></a>
<span class="sourceLineNo">083</span> * @return the service properties, {@literal null} by default.<a name="line.83"></a>
<span class="sourceLineNo">084</span> */<a name="line.84"></a>
<span class="sourceLineNo">085</span> protected Dictionary&lt;String, ?&gt; getServiceProperties() {<a name="line.85"></a>
<span class="sourceLineNo">086</span> return null;<a name="line.86"></a>
<span class="sourceLineNo">087</span> }<a name="line.87"></a>
<span class="sourceLineNo">088</span><a name="line.88"></a>
<span class="sourceLineNo">089</span> protected BundleContext getBundleContext() {<a name="line.89"></a>
<span class="sourceLineNo">090</span> return m_bundleContext;<a name="line.90"></a>
<span class="sourceLineNo">091</span> }<a name="line.91"></a>
<span class="sourceLineNo">092</span><a name="line.92"></a>
<span class="sourceLineNo">093</span> protected ServiceRegistration&lt;?&gt; getRegistration() {<a name="line.93"></a>
<span class="sourceLineNo">094</span> return m_registration;<a name="line.94"></a>
<span class="sourceLineNo">095</span> }<a name="line.95"></a>
<span class="sourceLineNo">096</span>}<a name="line.96"></a>
</pre>
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