ipojo/api/1.11.2/src-html/org/apache/felix/ipojo/handlers/providedservice/ProvidedService.SingletonStrategy.html - felix-site-pub - Git at Google

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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.providedservice;<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.*;<a name="line.21"></a>
 <span class="sourceLineNo">022</span>import org.apache.felix.ipojo.util.Callback;<a name="line.22"></a>
 <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.util.Property;<a name="line.23"></a>
 <span class="sourceLineNo">024</span>import org.apache.felix.ipojo.util.SecurityHelper;<a name="line.24"></a>
 <span class="sourceLineNo">025</span>import org.osgi.framework.*;<a name="line.25"></a>
 <span class="sourceLineNo">026</span>import org.osgi.service.cm.ConfigurationAdmin;<a name="line.26"></a>
 <span class="sourceLineNo">027</span><a name="line.27"></a>
 <span class="sourceLineNo">028</span>import java.lang.reflect.InvocationHandler;<a name="line.28"></a>
 <span class="sourceLineNo">029</span>import java.lang.reflect.Method;<a name="line.29"></a>
 <span class="sourceLineNo">030</span>import java.lang.reflect.Proxy;<a name="line.30"></a>
 <span class="sourceLineNo">031</span>import java.util.*;<a name="line.31"></a>
 <span class="sourceLineNo">032</span><a name="line.32"></a>
 <span class="sourceLineNo">033</span>/**<a name="line.33"></a>
 <span class="sourceLineNo">034</span> * Provided Service represent a provided service by the component.<a name="line.34"></a>
 <span class="sourceLineNo">035</span> *<a name="line.35"></a>
 <span class="sourceLineNo">036</span> * @author &lt;a href="mailto:dev@felix.apache.org"&gt;Felix Project Team&lt;/a&gt;<a name="line.36"></a>
 <span class="sourceLineNo">037</span> */<a name="line.37"></a>
 <span class="sourceLineNo">038</span>public class ProvidedService implements ServiceFactory {<a name="line.38"></a>
 <span class="sourceLineNo">039</span><a name="line.39"></a>
 <span class="sourceLineNo">040</span>    /**<a name="line.40"></a>
 <span class="sourceLineNo">041</span>     * Service State : REGISTRED.<a name="line.41"></a>
 <span class="sourceLineNo">042</span>     */<a name="line.42"></a>
 <span class="sourceLineNo">043</span>    public static final int REGISTERED = 1;<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>     * Service State : UNREGISTRED.<a name="line.46"></a>
 <span class="sourceLineNo">047</span>     */<a name="line.47"></a>
 <span class="sourceLineNo">048</span>    public static final int UNREGISTERED = 0;<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>     * Factory Policy : SINGLETON_FACTORY.<a name="line.51"></a>
 <span class="sourceLineNo">052</span>     */<a name="line.52"></a>
 <span class="sourceLineNo">053</span>    public static final int SINGLETON_STRATEGY = 0;<a name="line.53"></a>
 <span class="sourceLineNo">054</span><a name="line.54"></a>
 <span class="sourceLineNo">055</span>    /**<a name="line.55"></a>
 <span class="sourceLineNo">056</span>     * Factory policy : SERVICE_FACTORY.<a name="line.56"></a>
 <span class="sourceLineNo">057</span>     */<a name="line.57"></a>
 <span class="sourceLineNo">058</span>    public static final int SERVICE_STRATEGY = 1;<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>     * Factory policy : STATIC_FACTORY.<a name="line.61"></a>
 <span class="sourceLineNo">062</span>     */<a name="line.62"></a>
 <span class="sourceLineNo">063</span>    public static final int STATIC_STRATEGY = 2;<a name="line.63"></a>
 <span class="sourceLineNo">064</span><a name="line.64"></a>
 <span class="sourceLineNo">065</span>    /**<a name="line.65"></a>
 <span class="sourceLineNo">066</span>     * Factory policy : INSTANCE.<a name="line.66"></a>
 <span class="sourceLineNo">067</span>     * Creates one service object per instance consuming the service.<a name="line.67"></a>
 <span class="sourceLineNo">068</span>     */<a name="line.68"></a>
 <span class="sourceLineNo">069</span>    public static final int INSTANCE_STRATEGY = 3;<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>     * Factory policy : CUSTOMIZED.<a name="line.72"></a>
 <span class="sourceLineNo">073</span>     * Custom creation strategy<a name="line.73"></a>
 <span class="sourceLineNo">074</span>     */<a name="line.74"></a>
 <span class="sourceLineNo">075</span>    public static final int CUSTOM_STRATEGY = -1;<a name="line.75"></a>
 <span class="sourceLineNo">076</span>    public static final String ALL_SPECIFICATIONS_FOR_CONTROLLERS = "ALL";<a name="line.76"></a>
 <span class="sourceLineNo">077</span><a name="line.77"></a>
 <span class="sourceLineNo">078</span>    /**<a name="line.78"></a>
 <span class="sourceLineNo">079</span>     * At this time, it is only the java interface full name.<a name="line.79"></a>
 <span class="sourceLineNo">080</span>     */<a name="line.80"></a>
 <span class="sourceLineNo">081</span>    private String[] m_serviceSpecifications = new String[0];<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>     * The service registration. is null when the service is not registered.<a name="line.84"></a>
 <span class="sourceLineNo">085</span>     * m_serviceRegistration : ServiceRegistration<a name="line.85"></a>
 <span class="sourceLineNo">086</span>     */<a name="line.86"></a>
 <span class="sourceLineNo">087</span>    private ServiceRegistration m_serviceRegistration;<a name="line.87"></a>
 <span class="sourceLineNo">088</span><a name="line.88"></a>
 <span class="sourceLineNo">089</span>    /**<a name="line.89"></a>
 <span class="sourceLineNo">090</span>     * Link to the owner handler. m_handler : Provided Service Handler<a name="line.90"></a>
 <span class="sourceLineNo">091</span>     */<a name="line.91"></a>
 <span class="sourceLineNo">092</span>    private ProvidedServiceHandler m_handler;<a name="line.92"></a>
 <span class="sourceLineNo">093</span><a name="line.93"></a>
 <span class="sourceLineNo">094</span>    /**<a name="line.94"></a>
 <span class="sourceLineNo">095</span>     * The map of properties.<a name="line.95"></a>
 <span class="sourceLineNo">096</span>     */<a name="line.96"></a>
 <span class="sourceLineNo">097</span>    private Map&lt;String, Property&gt; m_properties = new TreeMap&lt;String, Property&gt;();<a name="line.97"></a>
 <span class="sourceLineNo">098</span><a name="line.98"></a>
 <span class="sourceLineNo">099</span>    /**<a name="line.99"></a>
 <span class="sourceLineNo">100</span>     * Service providing policy.<a name="line.100"></a>
 <span class="sourceLineNo">101</span>     */<a name="line.101"></a>
 <span class="sourceLineNo">102</span>    private final int m_policy;<a name="line.102"></a>
 <span class="sourceLineNo">103</span><a name="line.103"></a>
 <span class="sourceLineNo">104</span>    /**<a name="line.104"></a>
 <span class="sourceLineNo">105</span>     * Service Object creation policy.<a name="line.105"></a>
 <span class="sourceLineNo">106</span>     */<a name="line.106"></a>
 <span class="sourceLineNo">107</span>    private final CreationStrategy m_strategy;<a name="line.107"></a>
 <span class="sourceLineNo">108</span><a name="line.108"></a>
 <span class="sourceLineNo">109</span>    /**<a name="line.109"></a>
 <span class="sourceLineNo">110</span>     * Were the properties updated during the processing.<a name="line.110"></a>
 <span class="sourceLineNo">111</span>     */<a name="line.111"></a>
 <span class="sourceLineNo">112</span>    private volatile boolean m_wasUpdated;<a name="line.112"></a>
 <span class="sourceLineNo">113</span><a name="line.113"></a>
 <span class="sourceLineNo">114</span>    /**<a name="line.114"></a>
 <span class="sourceLineNo">115</span>     * Service Controller.<a name="line.115"></a>
 <span class="sourceLineNo">116</span>     */<a name="line.116"></a>
 <span class="sourceLineNo">117</span>    private Map&lt;String, ServiceController&gt; m_controllers = new HashMap&lt;String, ServiceController&gt;();<a name="line.117"></a>
 <span class="sourceLineNo">118</span><a name="line.118"></a>
 <span class="sourceLineNo">119</span>    /**<a name="line.119"></a>
 <span class="sourceLineNo">120</span>     * Post-Registration callback.<a name="line.120"></a>
 <span class="sourceLineNo">121</span>     */<a name="line.121"></a>
 <span class="sourceLineNo">122</span>    private Callback m_postRegistration;<a name="line.122"></a>
 <span class="sourceLineNo">123</span><a name="line.123"></a>
 <span class="sourceLineNo">124</span>    /**<a name="line.124"></a>
 <span class="sourceLineNo">125</span>     * Post-Unregistration callback.<a name="line.125"></a>
 <span class="sourceLineNo">126</span>     */<a name="line.126"></a>
 <span class="sourceLineNo">127</span>    private Callback m_postUnregistration;<a name="line.127"></a>
 <span class="sourceLineNo">128</span><a name="line.128"></a>
 <span class="sourceLineNo">129</span>    /**<a name="line.129"></a>
 <span class="sourceLineNo">130</span>     * The published properties.<a name="line.130"></a>
 <span class="sourceLineNo">131</span>     */<a name="line.131"></a>
 <span class="sourceLineNo">132</span>    private Dictionary m_publishedProperties = new Properties();<a name="line.132"></a>
 <span class="sourceLineNo">133</span><a name="line.133"></a>
 <span class="sourceLineNo">134</span>    /**<a name="line.134"></a>
 <span class="sourceLineNo">135</span>     * The provided service listeners.<a name="line.135"></a>
 <span class="sourceLineNo">136</span>     */<a name="line.136"></a>
 <span class="sourceLineNo">137</span>    private List&lt;ProvidedServiceListener&gt; m_listeners = new ArrayList&lt;ProvidedServiceListener&gt;();<a name="line.137"></a>
 <span class="sourceLineNo">138</span><a name="line.138"></a>
 <span class="sourceLineNo">139</span>    /**<a name="line.139"></a>
 <span class="sourceLineNo">140</span>     * Creates a provided service object.<a name="line.140"></a>
 <span class="sourceLineNo">141</span>     *<a name="line.141"></a>
 <span class="sourceLineNo">142</span>     * @param handler               the the provided service handler.<a name="line.142"></a>
 <span class="sourceLineNo">143</span>     * @param specification         the specifications provided by this provided service<a name="line.143"></a>
 <span class="sourceLineNo">144</span>     * @param factoryPolicy         the service providing policy<a name="line.144"></a>
 <span class="sourceLineNo">145</span>     * @param creationStrategyClass the customized service object creation strategy.<a name="line.145"></a>
 <span class="sourceLineNo">146</span>     * @param conf                  the instance configuration.<a name="line.146"></a>
 <span class="sourceLineNo">147</span>     */<a name="line.147"></a>
 <span class="sourceLineNo">148</span>    public ProvidedService(ProvidedServiceHandler handler, String[] specification, int factoryPolicy, Class creationStrategyClass, Dictionary conf) {<a name="line.148"></a>
 <span class="sourceLineNo">149</span>        CreationStrategy strategy;<a name="line.149"></a>
 <span class="sourceLineNo">150</span>        m_handler = handler;<a name="line.150"></a>
 <span class="sourceLineNo">151</span><a name="line.151"></a>
 <span class="sourceLineNo">152</span>        m_serviceSpecifications = specification;<a name="line.152"></a>
 <span class="sourceLineNo">153</span><a name="line.153"></a>
 <span class="sourceLineNo">154</span>        if (creationStrategyClass == null) {<a name="line.154"></a>
 <span class="sourceLineNo">155</span>            m_policy = factoryPolicy;<a name="line.155"></a>
 <span class="sourceLineNo">156</span>        } else {<a name="line.156"></a>
 <span class="sourceLineNo">157</span>            m_policy = CUSTOM_STRATEGY;<a name="line.157"></a>
 <span class="sourceLineNo">158</span>        }<a name="line.158"></a>
 <span class="sourceLineNo">159</span><a name="line.159"></a>
 <span class="sourceLineNo">160</span>        // Add instance name, factory name and factory version is set.<a name="line.160"></a>
 <span class="sourceLineNo">161</span>        try {<a name="line.161"></a>
 <span class="sourceLineNo">162</span>            addProperty(new Property(Factory.INSTANCE_NAME_PROPERTY, null, null, handler.getInstanceManager().getInstanceName(), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.162"></a>
 <span class="sourceLineNo">163</span>            addProperty(new Property("factory.name", null, null, handler.getInstanceManager().getFactory().getFactoryName(), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.163"></a>
 <span class="sourceLineNo">164</span><a name="line.164"></a>
 <span class="sourceLineNo">165</span>            if (handler.getInstanceManager().getFactory().getVersion() != null) {<a name="line.165"></a>
 <span class="sourceLineNo">166</span>                addProperty(new Property(Factory.FACTORY_VERSION_PROPERTY, null, null, handler.getInstanceManager().getFactory().getVersion(), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.166"></a>
 <span class="sourceLineNo">167</span>            }<a name="line.167"></a>
 <span class="sourceLineNo">168</span><a name="line.168"></a>
 <span class="sourceLineNo">169</span>            // Add the service.* if defined<a name="line.169"></a>
 <span class="sourceLineNo">170</span>            if (conf.get(Constants.SERVICE_PID) != null) {<a name="line.170"></a>
 <span class="sourceLineNo">171</span>                addProperty(new Property(Constants.SERVICE_PID, null, null, (String) conf.get(Constants.SERVICE_PID), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.171"></a>
 <span class="sourceLineNo">172</span>            }<a name="line.172"></a>
 <span class="sourceLineNo">173</span>            if (conf.get(Constants.SERVICE_RANKING) != null) {<a name="line.173"></a>
 <span class="sourceLineNo">174</span>                addProperty(new Property(Constants.SERVICE_RANKING, null, null, (String) conf.get(Constants.SERVICE_RANKING), "int", handler.getInstanceManager(), handler));<a name="line.174"></a>
 <span class="sourceLineNo">175</span>            }<a name="line.175"></a>
 <span class="sourceLineNo">176</span>            if (conf.get(Constants.SERVICE_VENDOR) != null) {<a name="line.176"></a>
 <span class="sourceLineNo">177</span>                addProperty(new Property(Constants.SERVICE_VENDOR, null, null, (String) conf.get(Constants.SERVICE_VENDOR), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.177"></a>
 <span class="sourceLineNo">178</span>            }<a name="line.178"></a>
 <span class="sourceLineNo">179</span>            if (conf.get(Constants.SERVICE_DESCRIPTION) != null) {<a name="line.179"></a>
 <span class="sourceLineNo">180</span>                addProperty(new Property(Constants.SERVICE_DESCRIPTION, null, null, (String) conf.get(Constants.SERVICE_DESCRIPTION), String.class.getName(), handler.getInstanceManager(), handler));<a name="line.180"></a>
 <span class="sourceLineNo">181</span>            }<a name="line.181"></a>
 <span class="sourceLineNo">182</span><a name="line.182"></a>
 <span class="sourceLineNo">183</span>        } catch (ConfigurationException e) {<a name="line.183"></a>
 <span class="sourceLineNo">184</span>            m_handler.error("An exception occurs when adding instance.name and factory.name property : " + e.getMessage());<a name="line.184"></a>
 <span class="sourceLineNo">185</span>        }<a name="line.185"></a>
 <span class="sourceLineNo">186</span><a name="line.186"></a>
 <span class="sourceLineNo">187</span>        if (creationStrategyClass != null) {<a name="line.187"></a>
 <span class="sourceLineNo">188</span>            try {<a name="line.188"></a>
 <span class="sourceLineNo">189</span>                strategy = (CreationStrategy) creationStrategyClass.newInstance();<a name="line.189"></a>
 <span class="sourceLineNo">190</span>            } catch (IllegalAccessException e) {<a name="line.190"></a>
 <span class="sourceLineNo">191</span>                strategy = null;<a name="line.191"></a>
 <span class="sourceLineNo">192</span>                m_handler.error("["<a name="line.192"></a>
 <span class="sourceLineNo">193</span>                        + m_handler.getInstanceManager().getInstanceName()<a name="line.193"></a>
 <span class="sourceLineNo">194</span>                        + "] The customized service object creation policy "<a name="line.194"></a>
 <span class="sourceLineNo">195</span>                        + "(" + creationStrategyClass.getName() + ") is not accessible: "<a name="line.195"></a>
 <span class="sourceLineNo">196</span>                        + e.getMessage(), e);<a name="line.196"></a>
 <span class="sourceLineNo">197</span>                getInstanceManager().stop();<a name="line.197"></a>
 <span class="sourceLineNo">198</span>            } catch (InstantiationException e) {<a name="line.198"></a>
 <span class="sourceLineNo">199</span>                strategy = null;<a name="line.199"></a>
 <span class="sourceLineNo">200</span>                m_handler.error("["<a name="line.200"></a>
 <span class="sourceLineNo">201</span>                        + m_handler.getInstanceManager().getInstanceName()<a name="line.201"></a>
 <span class="sourceLineNo">202</span>                        + "] The customized service object creation policy "<a name="line.202"></a>
 <span class="sourceLineNo">203</span>                        + "(" + creationStrategyClass.getName() + ") cannot be instantiated: "<a name="line.203"></a>
 <span class="sourceLineNo">204</span>                        + e.getMessage(), e);<a name="line.204"></a>
 <span class="sourceLineNo">205</span>                getInstanceManager().stop();<a name="line.205"></a>
 <span class="sourceLineNo">206</span>            }<a name="line.206"></a>
 <span class="sourceLineNo">207</span>        } else {<a name="line.207"></a>
 <span class="sourceLineNo">208</span>            switch (factoryPolicy) {<a name="line.208"></a>
 <span class="sourceLineNo">209</span>                case SINGLETON_STRATEGY:<a name="line.209"></a>
 <span class="sourceLineNo">210</span>                    strategy = new SingletonStrategy();<a name="line.210"></a>
 <span class="sourceLineNo">211</span>                    break;<a name="line.211"></a>
 <span class="sourceLineNo">212</span>                case SERVICE_STRATEGY:<a name="line.212"></a>
 <span class="sourceLineNo">213</span>                case STATIC_STRATEGY:<a name="line.213"></a>
 <span class="sourceLineNo">214</span>                    // In this case, we need to try to create a new pojo object,<a name="line.214"></a>
 <span class="sourceLineNo">215</span>                    // the factory method will handle the creation.<a name="line.215"></a>
 <span class="sourceLineNo">216</span>                    strategy = new FactoryStrategy();<a name="line.216"></a>
 <span class="sourceLineNo">217</span>                    break;<a name="line.217"></a>
 <span class="sourceLineNo">218</span>                case INSTANCE_STRATEGY:<a name="line.218"></a>
 <span class="sourceLineNo">219</span>                    strategy = new PerInstanceStrategy();<a name="line.219"></a>
 <span class="sourceLineNo">220</span>                    break;<a name="line.220"></a>
 <span class="sourceLineNo">221</span>                // Other policies:<a name="line.221"></a>
 <span class="sourceLineNo">222</span>                // Thread : one service object per asking thread<a name="line.222"></a>
 <span class="sourceLineNo">223</span>                // Consumer : one service object per consumer<a name="line.223"></a>
 <span class="sourceLineNo">224</span>                default:<a name="line.224"></a>
 <span class="sourceLineNo">225</span>                    strategy = null;<a name="line.225"></a>
 <span class="sourceLineNo">226</span>                    List specs = Arrays.asList(m_serviceSpecifications);<a name="line.226"></a>
 <span class="sourceLineNo">227</span>                    m_handler.error("["<a name="line.227"></a>
 <span class="sourceLineNo">228</span>                            + m_handler.getInstanceManager().getInstanceName()<a name="line.228"></a>
 <span class="sourceLineNo">229</span>                            + "] Unknown creation policy for " + specs + " : "<a name="line.229"></a>
 <span class="sourceLineNo">230</span>                            + factoryPolicy);<a name="line.230"></a>
 <span class="sourceLineNo">231</span>                    getInstanceManager().stop();<a name="line.231"></a>
 <span class="sourceLineNo">232</span>                    break;<a name="line.232"></a>
 <span class="sourceLineNo">233</span>            }<a name="line.233"></a>
 <span class="sourceLineNo">234</span>        }<a name="line.234"></a>
 <span class="sourceLineNo">235</span>        m_strategy = strategy;<a name="line.235"></a>
 <span class="sourceLineNo">236</span>    }<a name="line.236"></a>
 <span class="sourceLineNo">237</span><a name="line.237"></a>
 <span class="sourceLineNo">238</span>    /**<a name="line.238"></a>
 <span class="sourceLineNo">239</span>     * Add properties to the provided service.<a name="line.239"></a>
 <span class="sourceLineNo">240</span>     *<a name="line.240"></a>
 <span class="sourceLineNo">241</span>     * @param props : the properties to attached to the service registration<a name="line.241"></a>
 <span class="sourceLineNo">242</span>     */<a name="line.242"></a>
 <span class="sourceLineNo">243</span>    protected void setProperties(Property[] props) {<a name="line.243"></a>
 <span class="sourceLineNo">244</span>        for (Property prop : props) {<a name="line.244"></a>
 <span class="sourceLineNo">245</span>            addProperty(prop);<a name="line.245"></a>
 <span class="sourceLineNo">246</span>        }<a name="line.246"></a>
 <span class="sourceLineNo">247</span>    }<a name="line.247"></a>
 <span class="sourceLineNo">248</span><a name="line.248"></a>
 <span class="sourceLineNo">249</span>    /**<a name="line.249"></a>
 <span class="sourceLineNo">250</span>     * Add the given property to the property list.<a name="line.250"></a>
 <span class="sourceLineNo">251</span>     *<a name="line.251"></a>
 <span class="sourceLineNo">252</span>     * @param prop : the element to add<a name="line.252"></a>
 <span class="sourceLineNo">253</span>     */<a name="line.253"></a>
 <span class="sourceLineNo">254</span>    private synchronized void addProperty(Property prop) {<a name="line.254"></a>
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 <span class="sourceLineNo">257</span><a name="line.257"></a>
 <span class="sourceLineNo">258</span>    /**<a name="line.258"></a>
 <span class="sourceLineNo">259</span>     * Remove a property.<a name="line.259"></a>
 <span class="sourceLineNo">260</span>     *<a name="line.260"></a>
 <span class="sourceLineNo">261</span>     * @param name : the property to remove<a name="line.261"></a>
 <span class="sourceLineNo">262</span>     * @return &lt;code&gt;true&lt;/code&gt; if the property was removed,<a name="line.262"></a>
 <span class="sourceLineNo">263</span>     * &lt;code&gt;false&lt;/code&gt; otherwise.<a name="line.263"></a>
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 <span class="sourceLineNo">265</span>    private synchronized boolean removeProperty(String name) {<a name="line.265"></a>
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 <span class="sourceLineNo">268</span><a name="line.268"></a>
 <span class="sourceLineNo">269</span>    /**<a name="line.269"></a>
 <span class="sourceLineNo">270</span>     * Get the service reference of the service registration.<a name="line.270"></a>
 <span class="sourceLineNo">271</span>     *<a name="line.271"></a>
 <span class="sourceLineNo">272</span>     * @return the service reference of the provided service (null if the<a name="line.272"></a>
 <span class="sourceLineNo">273</span>     * service is not published).<a name="line.273"></a>
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 <span class="sourceLineNo">277</span>            return null;<a name="line.277"></a>
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 <span class="sourceLineNo">281</span>    }<a name="line.281"></a>
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 <span class="sourceLineNo">283</span>    /**<a name="line.283"></a>
 <span class="sourceLineNo">284</span>     * Returns a service object for the dependency.<a name="line.284"></a>
 <span class="sourceLineNo">285</span>     *<a name="line.285"></a>
 <span class="sourceLineNo">286</span>     * @param bundle       : the bundle<a name="line.286"></a>
 <span class="sourceLineNo">287</span>     * @param registration : the service registration of the registered service<a name="line.287"></a>
 <span class="sourceLineNo">288</span>     * @return a new service object or a already created service object (in the case of singleton) or &lt;code&gt;null&lt;/code&gt;<a name="line.288"></a>
 <span class="sourceLineNo">289</span>     * if the instance is no more valid.<a name="line.289"></a>
 <span class="sourceLineNo">290</span>     * @see org.osgi.framework.ServiceFactory#getService(org.osgi.framework.Bundle, org.osgi.framework.ServiceRegistration)<a name="line.290"></a>
 <span class="sourceLineNo">291</span>     */<a name="line.291"></a>
 <span class="sourceLineNo">292</span>    public Object getService(Bundle bundle, ServiceRegistration registration) {<a name="line.292"></a>
 <span class="sourceLineNo">293</span>        if (getInstanceManager().getState() == InstanceManager.VALID) {<a name="line.293"></a>
 <span class="sourceLineNo">294</span>            return m_strategy.getService(bundle, registration);<a name="line.294"></a>
 <span class="sourceLineNo">295</span>        } else {<a name="line.295"></a>
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 <span class="sourceLineNo">298</span>    }<a name="line.298"></a>
 <span class="sourceLineNo">299</span><a name="line.299"></a>
 <span class="sourceLineNo">300</span>    /**<a name="line.300"></a>
 <span class="sourceLineNo">301</span>     * The unget method.<a name="line.301"></a>
 <span class="sourceLineNo">302</span>     *<a name="line.302"></a>
 <span class="sourceLineNo">303</span>     * @param bundle       : bundle<a name="line.303"></a>
 <span class="sourceLineNo">304</span>     * @param registration : service registration<a name="line.304"></a>
 <span class="sourceLineNo">305</span>     * @param service      : service object<a name="line.305"></a>
 <span class="sourceLineNo">306</span>     * @see org.osgi.framework.ServiceFactory#ungetService(org.osgi.framework.Bundle,<a name="line.306"></a>
 <span class="sourceLineNo">307</span>     * org.osgi.framework.ServiceRegistration, java.lang.Object)<a name="line.307"></a>
 <span class="sourceLineNo">308</span>     */<a name="line.308"></a>
 <span class="sourceLineNo">309</span>    public void ungetService(Bundle bundle, ServiceRegistration registration, Object service) {<a name="line.309"></a>
 <span class="sourceLineNo">310</span>        m_strategy.ungetService(bundle, registration, service);<a name="line.310"></a>
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 <span class="sourceLineNo">312</span><a name="line.312"></a>
 <span class="sourceLineNo">313</span>    /**<a name="line.313"></a>
 <span class="sourceLineNo">314</span>     * Registers the service. The service object must be able to serve this<a name="line.314"></a>
 <span class="sourceLineNo">315</span>     * service.<a name="line.315"></a>
 <span class="sourceLineNo">316</span>     * This method also notifies the creation strategy of the publication.<a name="line.316"></a>
 <span class="sourceLineNo">317</span>     */<a name="line.317"></a>
 <span class="sourceLineNo">318</span>    public void registerService() {<a name="line.318"></a>
 <span class="sourceLineNo">319</span>        ServiceRegistration reg = null;<a name="line.319"></a>
 <span class="sourceLineNo">320</span>        Properties serviceProperties = null;<a name="line.320"></a>
 <span class="sourceLineNo">321</span>        // Do not have to be in the synchronized block, immutable.<a name="line.321"></a>
 <span class="sourceLineNo">322</span>        final BundleContext bc = m_handler.getInstanceManager().getContext();<a name="line.322"></a>
 <span class="sourceLineNo">323</span><a name="line.323"></a>
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 <span class="sourceLineNo">325</span>            if (m_serviceRegistration != null) {<a name="line.325"></a>
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 <span class="sourceLineNo">327</span>            } else {<a name="line.327"></a>
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 <span class="sourceLineNo">330</span>                    if (SecurityHelper.hasPermissionToRegisterServices(<a name="line.330"></a>
 <span class="sourceLineNo">331</span>                            m_serviceSpecifications, bc) &amp;&amp; SecurityHelper.canRegisterService(bc)) {<a name="line.331"></a>
 <span class="sourceLineNo">332</span>                        serviceProperties = getServiceProperties();<a name="line.332"></a>
 <span class="sourceLineNo">333</span>                    } else {<a name="line.333"></a>
 <span class="sourceLineNo">334</span>                        throw new SecurityException("The bundle "<a name="line.334"></a>
 <span class="sourceLineNo">335</span>                                + bc.getBundle().getBundleId()<a name="line.335"></a>
 <span class="sourceLineNo">336</span>                                + " does not have the"<a name="line.336"></a>
 <span class="sourceLineNo">337</span>                                + " permission to register the services "<a name="line.337"></a>
 <span class="sourceLineNo">338</span>                                + Arrays.asList(m_serviceSpecifications));<a name="line.338"></a>
 <span class="sourceLineNo">339</span>                    }<a name="line.339"></a>
 <span class="sourceLineNo">340</span>                } else {<a name="line.340"></a>
 <span class="sourceLineNo">341</span>                    // We don't have to do anything.<a name="line.341"></a>
 <span class="sourceLineNo">342</span>                    return;<a name="line.342"></a>
 <span class="sourceLineNo">343</span>                }<a name="line.343"></a>
 <span class="sourceLineNo">344</span>            }<a name="line.344"></a>
 <span class="sourceLineNo">345</span>        }<a name="line.345"></a>
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 <span class="sourceLineNo">347</span>        // Registration must be done outside of the synchronized block.<a name="line.347"></a>
 <span class="sourceLineNo">348</span>        m_strategy.onPublication(getInstanceManager(),<a name="line.348"></a>
 <span class="sourceLineNo">349</span>                getServiceSpecificationsToRegister(),<a name="line.349"></a>
 <span class="sourceLineNo">350</span>                serviceProperties);<a name="line.350"></a>
 <span class="sourceLineNo">351</span>        reg = bc.registerService(<a name="line.351"></a>
 <span class="sourceLineNo">352</span>                getServiceSpecificationsToRegister(), this,<a name="line.352"></a>
 <span class="sourceLineNo">353</span>                (Dictionary) serviceProperties);<a name="line.353"></a>
 <span class="sourceLineNo">354</span><a name="line.354"></a>
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 <span class="sourceLineNo">356</span>        synchronized (this) {<a name="line.356"></a>
 <span class="sourceLineNo">357</span>            if (m_serviceRegistration != null) {<a name="line.357"></a>
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 <span class="sourceLineNo">359</span>                reg.unregister();<a name="line.359"></a>
 <span class="sourceLineNo">360</span>                return;<a name="line.360"></a>
 <span class="sourceLineNo">361</span>            } else {<a name="line.361"></a>
 <span class="sourceLineNo">362</span>                m_serviceRegistration = reg;<a name="line.362"></a>
 <span class="sourceLineNo">363</span>            }<a name="line.363"></a>
 <span class="sourceLineNo">364</span><a name="line.364"></a>
 <span class="sourceLineNo">365</span>            // An update may happen during the registration, re-check and apply.<a name="line.365"></a>
 <span class="sourceLineNo">366</span>            // This must be call outside the synchronized block.<a name="line.366"></a>
 <span class="sourceLineNo">367</span>            // If the registration is null, the security helper returns false.<a name="line.367"></a>
 <span class="sourceLineNo">368</span>            if (m_wasUpdated &amp;&amp; SecurityHelper.canUpdateService(reg)) {<a name="line.368"></a>
 <span class="sourceLineNo">369</span>                serviceProperties = getServiceProperties();<a name="line.369"></a>
 <span class="sourceLineNo">370</span>                update = true;<a name="line.370"></a>
 <span class="sourceLineNo">371</span>            }<a name="line.371"></a>
 <span class="sourceLineNo">372</span>        }<a name="line.372"></a>
 <span class="sourceLineNo">373</span><a name="line.373"></a>
 <span class="sourceLineNo">374</span>        if (update) {<a name="line.374"></a>
 <span class="sourceLineNo">375</span>            reg.setProperties(serviceProperties);<a name="line.375"></a>
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 <span class="sourceLineNo">377</span><a name="line.377"></a>
 <span class="sourceLineNo">378</span>        synchronized (this) {<a name="line.378"></a>
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 <span class="sourceLineNo">380</span>            m_wasUpdated = false;<a name="line.380"></a>
 <span class="sourceLineNo">381</span><a name="line.381"></a>
 <span class="sourceLineNo">382</span>            // Call the post-registration callback in the same thread holding<a name="line.382"></a>
 <span class="sourceLineNo">383</span>            // the monitor lock.<a name="line.383"></a>
 <span class="sourceLineNo">384</span>            // This allows to be sure that the callback is called once per<a name="line.384"></a>
 <span class="sourceLineNo">385</span>            // registration.<a name="line.385"></a>
 <span class="sourceLineNo">386</span>            // But the callback must take care to not create a deadlock<a name="line.386"></a>
 <span class="sourceLineNo">387</span>            if (m_postRegistration != null) {<a name="line.387"></a>
 <span class="sourceLineNo">388</span>                try {<a name="line.388"></a>
 <span class="sourceLineNo">389</span>                    m_postRegistration<a name="line.389"></a>
 <span class="sourceLineNo">390</span>                            .call(new Object[]{m_serviceRegistration<a name="line.390"></a>
 <span class="sourceLineNo">391</span>                                    .getReference()});<a name="line.391"></a>
 <span class="sourceLineNo">392</span>                } catch (Exception e) {<a name="line.392"></a>
 <span class="sourceLineNo">393</span>                    m_handler.error(<a name="line.393"></a>
 <span class="sourceLineNo">394</span>                            "Cannot invoke the post-registration callback "<a name="line.394"></a>
 <span class="sourceLineNo">395</span>                                    + m_postRegistration.getMethod(), e);<a name="line.395"></a>
 <span class="sourceLineNo">396</span>                }<a name="line.396"></a>
 <span class="sourceLineNo">397</span>            }<a name="line.397"></a>
 <span class="sourceLineNo">398</span>        }<a name="line.398"></a>
 <span class="sourceLineNo">399</span><a name="line.399"></a>
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 <span class="sourceLineNo">401</span>        notifyListeners(+1);<a name="line.401"></a>
 <span class="sourceLineNo">402</span><a name="line.402"></a>
 <span class="sourceLineNo">403</span>    }<a name="line.403"></a>
 <span class="sourceLineNo">404</span><a name="line.404"></a>
 <span class="sourceLineNo">405</span>    /**<a name="line.405"></a>
 <span class="sourceLineNo">406</span>     * Withdraws the service from the service registry.<a name="line.406"></a>
 <span class="sourceLineNo">407</span>     */<a name="line.407"></a>
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 <span class="sourceLineNo">409</span>        ServiceReference ref = null;<a name="line.409"></a>
 <span class="sourceLineNo">410</span>        synchronized (this) {<a name="line.410"></a>
 <span class="sourceLineNo">411</span>            // Create a copy of the service reference in the case we need<a name="line.411"></a>
 <span class="sourceLineNo">412</span>            // to inject it to the post-unregistration callback.<a name="line.412"></a>
 <span class="sourceLineNo">413</span>            if (m_serviceRegistration != null) {<a name="line.413"></a>
 <span class="sourceLineNo">414</span>                ref = m_serviceRegistration.getReference();<a name="line.414"></a>
 <span class="sourceLineNo">415</span>                m_serviceRegistration.unregister();<a name="line.415"></a>
 <span class="sourceLineNo">416</span>                m_serviceRegistration = null;<a name="line.416"></a>
 <span class="sourceLineNo">417</span>            }<a name="line.417"></a>
 <span class="sourceLineNo">418</span><a name="line.418"></a>
 <span class="sourceLineNo">419</span>            m_strategy.onUnpublication();<a name="line.419"></a>
 <span class="sourceLineNo">420</span><a name="line.420"></a>
 <span class="sourceLineNo">421</span>            // Call the post-unregistration callback in the same thread holding the monitor lock.<a name="line.421"></a>
 <span class="sourceLineNo">422</span>            // This allows to be sure that the callback is called once per unregistration.<a name="line.422"></a>
 <span class="sourceLineNo">423</span>            // But the callback must take care to not create a deadlock<a name="line.423"></a>
 <span class="sourceLineNo">424</span>            if (m_postUnregistration != null &amp;&amp; ref != null) {<a name="line.424"></a>
 <span class="sourceLineNo">425</span>                try {<a name="line.425"></a>
 <span class="sourceLineNo">426</span>                    m_postUnregistration.call(new Object[]{ref});<a name="line.426"></a>
 <span class="sourceLineNo">427</span>                } catch (Exception e) {<a name="line.427"></a>
 <span class="sourceLineNo">428</span>                    m_handler.error("Cannot invoke the post-unregistration callback " + m_postUnregistration.getMethod(), e);<a name="line.428"></a>
 <span class="sourceLineNo">429</span>                }<a name="line.429"></a>
 <span class="sourceLineNo">430</span>            }<a name="line.430"></a>
 <span class="sourceLineNo">431</span>        }<a name="line.431"></a>
 <span class="sourceLineNo">432</span><a name="line.432"></a>
 <span class="sourceLineNo">433</span>        // Notify: ProvidedServiceListeners.serviceUnregistered()<a name="line.433"></a>
 <span class="sourceLineNo">434</span>        if (ref != null) {<a name="line.434"></a>
 <span class="sourceLineNo">435</span>            notifyListeners(-1);<a name="line.435"></a>
 <span class="sourceLineNo">436</span>        }<a name="line.436"></a>
 <span class="sourceLineNo">437</span><a name="line.437"></a>
 <span class="sourceLineNo">438</span>    }<a name="line.438"></a>
 <span class="sourceLineNo">439</span><a name="line.439"></a>
 <span class="sourceLineNo">440</span>    /**<a name="line.440"></a>
 <span class="sourceLineNo">441</span>     * Get the current provided service state.<a name="line.441"></a>
 <span class="sourceLineNo">442</span>     *<a name="line.442"></a>
 <span class="sourceLineNo">443</span>     * @return The state of the provided service.<a name="line.443"></a>
 <span class="sourceLineNo">444</span>     */<a name="line.444"></a>
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 <span class="sourceLineNo">446</span>        if (m_serviceRegistration == null) {<a name="line.446"></a>
 <span class="sourceLineNo">447</span>            return UNREGISTERED;<a name="line.447"></a>
 <span class="sourceLineNo">448</span>        } else {<a name="line.448"></a>
 <span class="sourceLineNo">449</span>            return REGISTERED;<a name="line.449"></a>
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 <span class="sourceLineNo">451</span>    }<a name="line.451"></a>
 <span class="sourceLineNo">452</span><a name="line.452"></a>
 <span class="sourceLineNo">453</span>    protected InstanceManager getInstanceManager() {<a name="line.453"></a>
 <span class="sourceLineNo">454</span>        return m_handler.getInstanceManager();<a name="line.454"></a>
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 <span class="sourceLineNo">456</span><a name="line.456"></a>
 <span class="sourceLineNo">457</span>    /**<a name="line.457"></a>
 <span class="sourceLineNo">458</span>     * Return the list of properties attached to this service. This list<a name="line.458"></a>
 <span class="sourceLineNo">459</span>     * contains only property where a value are assigned.<a name="line.459"></a>
 <span class="sourceLineNo">460</span>     * &lt;p/&gt;<a name="line.460"></a>
 <span class="sourceLineNo">461</span>     * This method is called while holding the monitor lock.<a name="line.461"></a>
 <span class="sourceLineNo">462</span>     *<a name="line.462"></a>
 <span class="sourceLineNo">463</span>     * @return the properties attached to the provided service.<a name="line.463"></a>
 <span class="sourceLineNo">464</span>     */<a name="line.464"></a>
 <span class="sourceLineNo">465</span>    private Properties getServiceProperties() {<a name="line.465"></a>
 <span class="sourceLineNo">466</span>        // Build the service properties list<a name="line.466"></a>
 <span class="sourceLineNo">467</span>        Properties serviceProperties = new Properties();<a name="line.467"></a>
 <span class="sourceLineNo">468</span>        for (Property p : m_properties.values()) {<a name="line.468"></a>
 <span class="sourceLineNo">469</span>            final Object value = p.getValue();<a name="line.469"></a>
 <span class="sourceLineNo">470</span>            if (value != null &amp;&amp; value != Property.NO_VALUE) {<a name="line.470"></a>
 <span class="sourceLineNo">471</span>                serviceProperties.put(p.getName(), value);<a name="line.471"></a>
 <span class="sourceLineNo">472</span>            }<a name="line.472"></a>
 <span class="sourceLineNo">473</span>        }<a name="line.473"></a>
 <span class="sourceLineNo">474</span>        return serviceProperties;<a name="line.474"></a>
 <span class="sourceLineNo">475</span>    }<a name="line.475"></a>
 <span class="sourceLineNo">476</span><a name="line.476"></a>
 <span class="sourceLineNo">477</span>    /**<a name="line.477"></a>
 <span class="sourceLineNo">478</span>     * Get the list of properties attached to the service registration.<a name="line.478"></a>
 <span class="sourceLineNo">479</span>     *<a name="line.479"></a>
 <span class="sourceLineNo">480</span>     * @return the properties attached to the provided service.<a name="line.480"></a>
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 <span class="sourceLineNo">482</span>    public synchronized Property[] getProperties() {<a name="line.482"></a>
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 <span class="sourceLineNo">485</span><a name="line.485"></a>
 <span class="sourceLineNo">486</span>    /**<a name="line.486"></a>
 <span class="sourceLineNo">487</span>     * Update the service properties. The new list of properties is sent to<a name="line.487"></a>
 <span class="sourceLineNo">488</span>     * the service registry.<a name="line.488"></a>
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 <span class="sourceLineNo">494</span>            if (m_serviceRegistration != null) {<a name="line.494"></a>
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 <span class="sourceLineNo">497</span>                Dictionary newProps = (Dictionary) (updated.clone());<a name="line.497"></a>
 <span class="sourceLineNo">498</span><a name="line.498"></a>
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 <span class="sourceLineNo">501</span>                oldProps.remove(Factory.INSTANCE_NAME_PROPERTY);<a name="line.501"></a>
 <span class="sourceLineNo">502</span>                newProps.remove(Constants.SERVICE_ID);<a name="line.502"></a>
 <span class="sourceLineNo">503</span>                oldProps.remove(Constants.SERVICE_ID);<a name="line.503"></a>
 <span class="sourceLineNo">504</span>                newProps.remove(Constants.SERVICE_PID);<a name="line.504"></a>
 <span class="sourceLineNo">505</span>                oldProps.remove(Constants.SERVICE_PID);<a name="line.505"></a>
 <span class="sourceLineNo">506</span>                newProps.remove("factory.name");<a name="line.506"></a>
 <span class="sourceLineNo">507</span>                oldProps.remove("factory.name");<a name="line.507"></a>
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 </pre>
 </div>
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