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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>package org.apache.felix.ipojo.handlers.architecture;<a name="line.19"></a> |
| <span class="sourceLineNo">020</span><a name="line.20"></a> |
| <span class="sourceLineNo">021</span>import org.apache.felix.ipojo.ComponentInstance;<a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.felix.ipojo.Factory;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.InstanceStateListener;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.felix.ipojo.PrimitiveHandler;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.felix.ipojo.architecture.Architecture;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.felix.ipojo.architecture.InstanceDescription;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.apache.felix.ipojo.metadata.Element;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.apache.felix.ipojo.util.SecurityHelper;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.osgi.framework.ServiceRegistration;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.Dictionary;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span>import java.util.Hashtable;<a name="line.32"></a> |
| <span class="sourceLineNo">033</span><a name="line.33"></a> |
| <span class="sourceLineNo">034</span>/**<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * Architecture Handler. Provide a runtime representation of iPOJO instances.<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> *<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.37"></a> |
| <span class="sourceLineNo">038</span> */<a name="line.38"></a> |
| <span class="sourceLineNo">039</span>public class ArchitectureHandler extends PrimitiveHandler implements Architecture, InstanceStateListener {<a name="line.39"></a> |
| <span class="sourceLineNo">040</span><a name="line.40"></a> |
| <span class="sourceLineNo">041</span> /**<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> * Name of the component.<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> */<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> private String m_name;<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> /**<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * The Architecture service registration.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private ServiceRegistration m_serviceRegistration;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * Configure the handler.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> *<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> * @param metadata : the metadata of the component<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> * @param configuration : the instance configuration<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * @see org.apache.felix.ipojo.Handler#configure(org.apache.felix.ipojo.metadata.Element, java.util.Dictionary)<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> */<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> public void configure(Element metadata, Dictionary configuration) {<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> m_name = (String) configuration.get(Factory.INSTANCE_NAME_PROPERTY);<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> Dictionary<String, String> dict = new Hashtable<String, String>();<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> dict.put(ARCHITECTURE_INSTANCE, m_name);<a name="line.60"></a> |
| <span class="sourceLineNo">061</span><a name="line.61"></a> |
| <span class="sourceLineNo">062</span> if (SecurityHelper.canRegisterService(getInstanceManager().getContext())) {<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> debug("Registering architecture service for " + m_name);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> m_serviceRegistration = getInstanceManager().getContext().registerService(Architecture.class.getName(), this, dict);<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> // We can't use the regular handler stateChanged method as this method is not called when the instance is<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> // disposed. This handler stays actives until the instance disposal.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> getInstanceManager().addInstanceStateListener(this);<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> } else {<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> error("Cannot register the architecture service, bundle " + getInstanceManager().getContext().getBundle()<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> .getBundleId() + " is not in a valid state" );<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><a name="line.73"></a> |
| <span class="sourceLineNo">074</span> /**<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * Stop method.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> *<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * @see org.apache.felix.ipojo.Handler#stop()<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> public void stop() {<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> // Nothing do do when stopping.<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> /**<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * Start method.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> *<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> * @see org.apache.felix.ipojo.Handler#start()<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> */<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> public void start() {<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> // Nothing to do.<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> }<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> * Get the instance description.<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> *<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> * @return the instance description<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * @see org.apache.felix.ipojo.architecture.Architecture#getInstanceDescription()<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> */<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> public InstanceDescription getInstanceDescription() {<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> return getInstanceManager().getInstanceDescription();<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> }<a name="line.100"></a> |
| <span class="sourceLineNo">101</span><a name="line.101"></a> |
| <span class="sourceLineNo">102</span> /**<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> * The instance lifecycle listener callback.<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * When we receive the DISPOSED state, the architecture is unregistered from the service registry.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> *<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> * @param instance the changing instance the instance, meaningless in our case.<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> * @param newState the new instance state the new instance state.<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> */<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> public void stateChanged(ComponentInstance instance, int newState) {<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> if (newState == ComponentInstance.DISPOSED && m_serviceRegistration != null) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> debug("Withdrawing the architecture service of " + m_name + " due to instance disposal");<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> m_serviceRegistration.unregister();<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> m_serviceRegistration = null;<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> }<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span>}<a name="line.116"></a> |
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