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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.util;<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.IPOJOServiceFactory;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.dependency.impl.ServiceReferenceManager;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.osgi.framework.BundleContext;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.osgi.framework.Filter;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.osgi.framework.InvalidSyntaxException;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.osgi.framework.ServiceReference;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span><a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.*;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.concurrent.locks.ReentrantReadWriteLock;<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> * Abstract dependency model.<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * This class is the parent class of every service dependency. It manages the most<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> * part of dependency management. This class creates an interface between the service<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * tracker and the concrete dependency.<a name="line.36"></a> |
| <span class="sourceLineNo">037</span> *<a name="line.37"></a> |
| <span class="sourceLineNo">038</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.38"></a> |
| <span class="sourceLineNo">039</span> */<a name="line.39"></a> |
| <span class="sourceLineNo">040</span>public abstract class DependencyModel {<a name="line.40"></a> |
| <span class="sourceLineNo">041</span><a name="line.41"></a> |
| <span class="sourceLineNo">042</span> /**<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> * Dependency state : BROKEN.<a name="line.43"></a> |
| <span class="sourceLineNo">044</span> * A broken dependency cannot be fulfilled anymore. The dependency becomes<a name="line.44"></a> |
| <span class="sourceLineNo">045</span> * broken when a used service disappears in the static binding policy.<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> */<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> public static final int BROKEN = -1;<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> /**<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> * Dependency state : UNRESOLVED.<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * A dependency is unresolved if the dependency is not valid and no service<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * providers are available.<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> public static final int UNRESOLVED = 0;<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> /**<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> * Dependency state : RESOLVED.<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> * A dependency is resolved if the dependency is optional or at least one<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * provider is available.<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> */<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> public static final int RESOLVED = 1;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * Binding policy : Dynamic.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * In this policy, services can appears and departs without special treatment.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> */<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> public static final int DYNAMIC_BINDING_POLICY = 0;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> /**<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * Binding policy : Static.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> * Once a service is used, if this service disappears the dependency becomes<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> * {@link DependencyModel#BROKEN}. The instance needs to be recreated.<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> */<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> public static final int STATIC_BINDING_POLICY = 1;<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> /**<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> * Binding policy : Dynamic-Priority.<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * In this policy, services can appears and departs. However, once a service<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * with a highest ranking (according to the used comparator) appears, this<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> * new service is re-injected.<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> */<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> public static final int DYNAMIC_PRIORITY_BINDING_POLICY = 2;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> /**<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * The service reference manager.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> */<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> protected final ServiceReferenceManager m_serviceReferenceManager;<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> /**<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> * The manager handling context sources.<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> */<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private final ContextSourceManager m_contextSourceManager;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> /**<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> * Listener object on which invoking the {@link DependencyStateListener#validate(DependencyModel)}<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * and {@link DependencyStateListener#invalidate(DependencyModel)} methods.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> */<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> private final DependencyStateListener m_listener;<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> /**<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * The instance requiring the service.<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> */<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> private final ComponentInstance m_instance;<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> /**<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * Does the dependency bind several providers ?<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> */<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> private boolean m_aggregate;<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> /**<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> * Is the dependency optional ?<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> */<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> private boolean m_optional;<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> /**<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> * The required specification.<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> * Cannot change once set.<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> */<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> private Class m_specification;<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> /**<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> * Bundle context used by the dependency.<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> * (may be a {@link org.apache.felix.ipojo.ServiceContext}).<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> */<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> private BundleContext m_context;<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> /**<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> * The actual state of the dependency.<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> * {@link DependencyModel#UNRESOLVED} at the beginning.<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> */<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> private int m_state;<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> /**<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> * The Binding policy of the dependency.<a name="line.119"></a> |
| <span class="sourceLineNo">120</span> */<a name="line.120"></a> |
| <span class="sourceLineNo">121</span> private int m_policy = DYNAMIC_BINDING_POLICY;<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> /**<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> * The tracker used by this dependency to track providers.<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> */<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> private Tracker m_tracker;<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> /**<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> * Map {@link ServiceReference} -> Service Object.<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> * This map stores service object, and so is able to handle<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> * iPOJO custom policies.<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> */<a name="line.130"></a> |
| <span class="sourceLineNo">131</span> private Map<ServiceReference, Object> m_serviceObjects = new HashMap<ServiceReference, Object>();<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> /**<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * The current list of bound services.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> */<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> private List<ServiceReference> m_boundServices = new ArrayList<ServiceReference>();<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> /**<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * The lock ensuring state consistency of the dependency.<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> * This lock can be acquired from all collaborators.<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> */<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> private ReentrantReadWriteLock m_lock = new ReentrantReadWriteLock();<a name="line.140"></a> |
| <span class="sourceLineNo">141</span><a name="line.141"></a> |
| <span class="sourceLineNo">142</span> /**<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> * The listeners of the dependency model.<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> */<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> private final List<DependencyModelListener> m_listeners = new ArrayList<DependencyModelListener>();<a name="line.145"></a> |
| <span class="sourceLineNo">146</span><a name="line.146"></a> |
| <span class="sourceLineNo">147</span> /**<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> * Creates a DependencyModel.<a name="line.148"></a> |
| <span class="sourceLineNo">149</span> * If the dependency has no comparator and follows the<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> * {@link DependencyModel#DYNAMIC_PRIORITY_BINDING_POLICY} policy<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> * the OSGi Service Reference Comparator is used.<a name="line.151"></a> |
| <span class="sourceLineNo">152</span> *<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> * @param specification the required specification<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> * @param aggregate is the dependency aggregate ?<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> * @param optional is the dependency optional ?<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> * @param filter the LDAP filter<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> * @param comparator the comparator object to sort references<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> * @param policy the binding policy<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> * @param context the bundle context (or service context)<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> * @param listener the dependency lifecycle listener to notify from dependency<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> * @param ci instance managing the dependency<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> * state changes.<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> */<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> public DependencyModel(Class specification, boolean aggregate, boolean optional, Filter filter,<a name="line.164"></a> |
| <span class="sourceLineNo">165</span> Comparator<ServiceReference> comparator, int policy,<a name="line.165"></a> |
| <span class="sourceLineNo">166</span> BundleContext context, DependencyStateListener listener, ComponentInstance ci) {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> m_specification = specification;<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> m_aggregate = aggregate;<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> m_optional = optional;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> m_instance = ci;<a name="line.171"></a> |
| <span class="sourceLineNo">172</span><a name="line.172"></a> |
| <span class="sourceLineNo">173</span> m_policy = policy;<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // If the dynamic priority policy is chosen, and we have no comparator, fix it to OSGi standard service reference comparator.<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> if (m_policy == DYNAMIC_PRIORITY_BINDING_POLICY && comparator == null) {<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> comparator = new ServiceReferenceRankingComparator();<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> }<a name="line.177"></a> |
| <span class="sourceLineNo">178</span><a name="line.178"></a> |
| <span class="sourceLineNo">179</span> if (context != null) {<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> m_context = context;<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // If the context is null, it gonna be set later using the setBundleContext method.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> }<a name="line.182"></a> |
| <span class="sourceLineNo">183</span><a name="line.183"></a> |
| <span class="sourceLineNo">184</span> m_serviceReferenceManager = new ServiceReferenceManager(this, filter, comparator);<a name="line.184"></a> |
| <span class="sourceLineNo">185</span><a name="line.185"></a> |
| <span class="sourceLineNo">186</span> if (filter != null) {<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> try {<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> m_contextSourceManager = new ContextSourceManager(this);<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> } catch (InvalidSyntaxException e) {<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> throw new IllegalArgumentException(e);<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> } else {<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> m_contextSourceManager = null;<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> }<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> m_state = UNRESOLVED;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> m_listener = listener;<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> }<a name="line.197"></a> |
| <span class="sourceLineNo">198</span><a name="line.198"></a> |
| <span class="sourceLineNo">199</span> /**<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> * Opens the tracking.<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> * This method computes the dependency state.<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> * <p/><a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * As the dependency is starting, locking is not required here.<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> *<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> * @see DependencyModel#computeAndSetDependencyState()<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> */<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> public void start() {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> m_state = UNRESOLVED;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> m_tracker = new Tracker(m_context, m_specification.getName(), m_serviceReferenceManager);<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> m_serviceReferenceManager.open();<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> m_tracker.open();<a name="line.211"></a> |
| <span class="sourceLineNo">212</span><a name="line.212"></a> |
| <span class="sourceLineNo">213</span> if (m_contextSourceManager != null) {<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> m_contextSourceManager.start();<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> }<a name="line.215"></a> |
| <span class="sourceLineNo">216</span><a name="line.216"></a> |
| <span class="sourceLineNo">217</span> computeAndSetDependencyState();<a name="line.217"></a> |
| <span class="sourceLineNo">218</span> }<a name="line.218"></a> |
| <span class="sourceLineNo">219</span><a name="line.219"></a> |
| <span class="sourceLineNo">220</span> /**<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * Gets the bundle context used by the dependency.<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> * @return the bundle context<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> */<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> public BundleContext getBundleContext() {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // Immutable member, no lock required.<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> return m_context;<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> }<a name="line.227"></a> |
| <span class="sourceLineNo">228</span><a name="line.228"></a> |
| <span class="sourceLineNo">229</span> /**<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> * This callback is called by ranking interceptor to notify the dependency that the selected service set has<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> * changed and must be recomputed.<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> */<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> public void invalidateSelectedServices() {<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> m_serviceReferenceManager.invalidateSelectedServices();<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> }<a name="line.235"></a> |
| <span class="sourceLineNo">236</span><a name="line.236"></a> |
| <span class="sourceLineNo">237</span> public void invalidateMatchingServices() {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> m_serviceReferenceManager.invalidateMatchingServices();<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> }<a name="line.239"></a> |
| <span class="sourceLineNo">240</span><a name="line.240"></a> |
| <span class="sourceLineNo">241</span> /**<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> * Closes the tracking.<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> * The dependency becomes {@link DependencyModel#UNRESOLVED}<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> * at the end of this method.<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> */<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> public void stop() {<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> // We're stopping, we must take the exclusive lock<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> try {<a name="line.248"></a> |
| <span class="sourceLineNo">249</span> acquireWriteLockIfNotHeld();<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> if (m_tracker != null) {<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> m_tracker.close();<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> m_tracker = null;<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> }<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> m_boundServices.clear();<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> m_serviceReferenceManager.close();<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> ungetAllServices();<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> m_state = UNRESOLVED;<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> if (m_contextSourceManager != null) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> m_contextSourceManager.stop();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> }<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> } finally {<a name="line.261"></a> |
| <span class="sourceLineNo">262</span> releaseWriteLockIfHeld();<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> }<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> }<a name="line.264"></a> |
| <span class="sourceLineNo">265</span><a name="line.265"></a> |
| <span class="sourceLineNo">266</span> /**<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> * Ungets all 'get' service references.<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> * This also clears the service object map.<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> * The method is called while holding the exclusive lock.<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> */<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> private void ungetAllServices() {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> for (Map.Entry<ServiceReference, Object> entry : m_serviceObjects.entrySet()) {<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> ServiceReference ref = entry.getKey();<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> Object svc = entry.getValue();<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> if (m_tracker != null) {<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> m_tracker.ungetService(ref);<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> }<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> if (svc instanceof IPOJOServiceFactory) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> ((IPOJOServiceFactory) svc).ungetService(m_instance, svc);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> }<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> }<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> m_serviceObjects.clear();<a name="line.282"></a> |
| <span class="sourceLineNo">283</span> }<a name="line.283"></a> |
| <span class="sourceLineNo">284</span><a name="line.284"></a> |
| <span class="sourceLineNo">285</span> /**<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * Is the reference set frozen (cannot change anymore)?<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * This method must be override by concrete dependency to support<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> * the static binding policy. In fact, this method allows optimizing<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * the static dependencies to become frozen only when needed.<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * This method returns <code>false</code> by default.<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> * The method must always return <code>false</code> for non-static dependencies.<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> *<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> * @return <code>true</code> if the reference set is frozen.<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> */<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> public boolean isFrozen() {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> return false;<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> }<a name="line.297"></a> |
| <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> * Unfreezes the dependency.<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * This method must be override by concrete dependency to support<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> * the static binding policy. This method is called after tracking restarting.<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> */<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> public void unfreeze() {<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> // nothing to do<a name="line.305"></a> |
| <span class="sourceLineNo">306</span> }<a name="line.306"></a> |
| <span class="sourceLineNo">307</span><a name="line.307"></a> |
| <span class="sourceLineNo">308</span> /**<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> * Does the service reference match ? This method must be overridden by<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * concrete dependencies if they need advanced testing on service reference<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> * (that cannot be expressed in the LDAP filter). By default this method<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * returns <code>true</code>.<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> *<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> * @param ref the tested reference.<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> * @return <code>true</code> if the service reference matches.<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> */<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> public boolean match(ServiceReference ref) {<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> return true;<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> }<a name="line.319"></a> |
| <span class="sourceLineNo">320</span><a name="line.320"></a> |
| <span class="sourceLineNo">321</span> /**<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * Computes the actual dependency state.<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * This methods invokes the {@link DependencyStateListener}.<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * If this method is called without the write lock, it takes it. Anyway, the lock will be released before called<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> * the<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> * callbacks.<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> */<a name="line.327"></a> |
| <span class="sourceLineNo">328</span> private void computeAndSetDependencyState() {<a name="line.328"></a> |
| <span class="sourceLineNo">329</span> try {<a name="line.329"></a> |
| <span class="sourceLineNo">330</span> boolean mustCallValidate = false;<a name="line.330"></a> |
| <span class="sourceLineNo">331</span> boolean mustCallInvalidate = false;<a name="line.331"></a> |
| <span class="sourceLineNo">332</span><a name="line.332"></a> |
| <span class="sourceLineNo">333</span> acquireWriteLockIfNotHeld();<a name="line.333"></a> |
| <span class="sourceLineNo">334</span><a name="line.334"></a> |
| <span class="sourceLineNo">335</span> // The dependency is broken, nothing else can be done<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> if (m_state == BROKEN) {<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> return;<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> }<a name="line.338"></a> |
| <span class="sourceLineNo">339</span><a name="line.339"></a> |
| <span class="sourceLineNo">340</span> if (m_optional || !m_serviceReferenceManager.isEmpty()) {<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> // The dependency is valid<a name="line.341"></a> |
| <span class="sourceLineNo">342</span> if (m_state == UNRESOLVED) {<a name="line.342"></a> |
| <span class="sourceLineNo">343</span> m_state = RESOLVED;<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> mustCallValidate = true;<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> }<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> } else {<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> // The dependency is invalid<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> if (m_state == RESOLVED) {<a name="line.348"></a> |
| <span class="sourceLineNo">349</span> m_state = UNRESOLVED;<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> mustCallInvalidate = true;<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> }<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> }<a name="line.352"></a> |
| <span class="sourceLineNo">353</span><a name="line.353"></a> |
| <span class="sourceLineNo">354</span> // Invoke callback in a non-synchronized region<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> // First unlock the lock<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> releaseWriteLockIfHeld();<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> // Now we can call the callbacks<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> if (mustCallInvalidate) {<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> invalidate();<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> } else if (mustCallValidate) {<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> validate();<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> }<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> } finally {<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> // If we are still holding the exclusive lock, unlock it.<a name="line.364"></a> |
| <span class="sourceLineNo">365</span> releaseWriteLockIfHeld();<a name="line.365"></a> |
| <span class="sourceLineNo">366</span> }<a name="line.366"></a> |
| <span class="sourceLineNo">367</span><a name="line.367"></a> |
| <span class="sourceLineNo">368</span> }<a name="line.368"></a> |
| <span class="sourceLineNo">369</span><a name="line.369"></a> |
| <span class="sourceLineNo">370</span> /**<a name="line.370"></a> |
| <span class="sourceLineNo">371</span> * Gets the first bound service reference.<a name="line.371"></a> |
| <span class="sourceLineNo">372</span> *<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> * @return <code>null</code> if no more provider is available,<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> * else returns the first reference from the matching set.<a name="line.374"></a> |
| <span class="sourceLineNo">375</span> */<a name="line.375"></a> |
| <span class="sourceLineNo">376</span> public ServiceReference getServiceReference() {<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> // Read lock required<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> try {<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> acquireReadLockIfNotHeld();<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> if (m_boundServices.isEmpty()) {<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> return null;<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> } else {<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> return m_boundServices.get(0);<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> }<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> } finally {<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> releaseReadLockIfHeld();<a name="line.386"></a> |
| <span class="sourceLineNo">387</span> }<a name="line.387"></a> |
| <span class="sourceLineNo">388</span> }<a name="line.388"></a> |
| <span class="sourceLineNo">389</span><a name="line.389"></a> |
| <span class="sourceLineNo">390</span> /**<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> * Gets bound service references.<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> *<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> * @return the sorted (if a comparator is used) array of matching service<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> * references, <code>null</code> if no references are available.<a name="line.394"></a> |
| <span class="sourceLineNo">395</span> */<a name="line.395"></a> |
| <span class="sourceLineNo">396</span> public ServiceReference[] getServiceReferences() {<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> // Read lock required<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> try {<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> acquireReadLockIfNotHeld();<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> if (m_boundServices.isEmpty()) {<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> return null;<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> }<a name="line.402"></a> |
| <span class="sourceLineNo">403</span> return m_boundServices.toArray(new ServiceReference[m_boundServices.size()]);<a name="line.403"></a> |
| <span class="sourceLineNo">404</span> } finally {<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> releaseReadLockIfHeld();<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> }<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> }<a name="line.407"></a> |
| <span class="sourceLineNo">408</span><a name="line.408"></a> |
| <span class="sourceLineNo">409</span> /**<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> * Gets the list of currently used service references.<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> * If no service references, returns <code>null</code><a name="line.411"></a> |
| <span class="sourceLineNo">412</span> *<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> * @return the list of used reference (according to the service tracker).<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> */<a name="line.414"></a> |
| <span class="sourceLineNo">415</span> public List<ServiceReference> getUsedServiceReferences() {<a name="line.415"></a> |
| <span class="sourceLineNo">416</span> // Read lock required<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> try {<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> acquireReadLockIfNotHeld();<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> // The list must confront actual matching services with already get services from the tracker.<a name="line.419"></a> |
| <span class="sourceLineNo">420</span><a name="line.420"></a> |
| <span class="sourceLineNo">421</span> int size = m_boundServices.size();<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> List<ServiceReference> usedByTracker = null;<a name="line.422"></a> |
| <span class="sourceLineNo">423</span> if (m_tracker != null) {<a name="line.423"></a> |
| <span class="sourceLineNo">424</span> usedByTracker = m_tracker.getUsedServiceReferences();<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> }<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> if (size == 0 || usedByTracker == null) {<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> return null;<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> }<a name="line.428"></a> |
| <span class="sourceLineNo">429</span><a name="line.429"></a> |
| <span class="sourceLineNo">430</span> List<ServiceReference> list = new ArrayList<ServiceReference>(1);<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> for (ServiceReference ref : m_boundServices) {<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> if (usedByTracker.contains(ref)) {<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> list.add(ref); // Add the service in the list.<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> if (!isAggregate()) { // IF we are not multiple, return the list when the first element is found.<a name="line.434"></a> |
| <span class="sourceLineNo">435</span> return list;<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> return list;<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> } finally {<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> releaseReadLockIfHeld();<a name="line.442"></a> |
| <span class="sourceLineNo">443</span> }<a name="line.443"></a> |
| <span class="sourceLineNo">444</span> }<a name="line.444"></a> |
| <span class="sourceLineNo">445</span><a name="line.445"></a> |
| <span class="sourceLineNo">446</span> /**<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> * @return the component instance on which this dependency is plugged.<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> */<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> public ComponentInstance getComponentInstance() {<a name="line.449"></a> |
| <span class="sourceLineNo">450</span> // No lock required as m_instance is final<a name="line.450"></a> |
| <span class="sourceLineNo">451</span> return m_instance;<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> }<a name="line.452"></a> |
| <span class="sourceLineNo">453</span><a name="line.453"></a> |
| <span class="sourceLineNo">454</span> /**<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> * Gets the number of actual matching references.<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> *<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> * @return the number of matching references<a name="line.457"></a> |
| <span class="sourceLineNo">458</span> */<a name="line.458"></a> |
| <span class="sourceLineNo">459</span> public int getSize() {<a name="line.459"></a> |
| <span class="sourceLineNo">460</span> try {<a name="line.460"></a> |
| <span class="sourceLineNo">461</span> acquireReadLockIfNotHeld();<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> return m_boundServices.size();<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> } finally {<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> releaseReadLockIfHeld();<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> }<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> }<a name="line.466"></a> |
| <span class="sourceLineNo">467</span><a name="line.467"></a> |
| <span class="sourceLineNo">468</span> /**<a name="line.468"></a> |
| <span class="sourceLineNo">469</span> * Concrete dependency callback.<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> * This method is called when a new service needs to be<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> * re-injected in the underlying concrete dependency.<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> *<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> * @param ref the service reference to inject.<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> */<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> public abstract void onServiceArrival(ServiceReference ref);<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> * Concrete dependency callback.<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> * This method is called when a used service (already injected) is leaving.<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> *<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> * @param ref the leaving service reference.<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> */<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> public abstract void onServiceDeparture(ServiceReference ref);<a name="line.483"></a> |
| <span class="sourceLineNo">484</span><a name="line.484"></a> |
| <span class="sourceLineNo">485</span> /**<a name="line.485"></a> |
| <span class="sourceLineNo">486</span> * Concrete dependency callback.<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> * This method is called when a used service (already injected) is modified.<a name="line.487"></a> |
| <span class="sourceLineNo">488</span> *<a name="line.488"></a> |
| <span class="sourceLineNo">489</span> * @param ref the modified service reference.<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> */<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> public abstract void onServiceModification(ServiceReference ref);<a name="line.491"></a> |
| <span class="sourceLineNo">492</span><a name="line.492"></a> |
| <span class="sourceLineNo">493</span> /**<a name="line.493"></a> |
| <span class="sourceLineNo">494</span> * Concrete dependency callback.<a name="line.494"></a> |
| <span class="sourceLineNo">495</span> * This method is called when the dependency is reconfigured and when this<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> * reconfiguration implies changes on the matching service set ( and by the<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> * way on the injected service).<a name="line.497"></a> |
| <span class="sourceLineNo">498</span> *<a name="line.498"></a> |
| <span class="sourceLineNo">499</span> * @param departs the service leaving the matching set.<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> * @param arrivals the service arriving in the matching set.<a name="line.500"></a> |
| <span class="sourceLineNo">501</span> */<a name="line.501"></a> |
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| <span class="sourceLineNo">503</span><a name="line.503"></a> |
| <span class="sourceLineNo">504</span> /**<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> * Calls the listener callback to notify the new state of the current<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> * dependency.<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> * No lock hold when calling this callback.<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> */<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> private void invalidate() {<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> m_listener.invalidate(this);<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> // Notify dependency invalidation to listeners<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> notifyListeners(DependencyEventType.INVALIDATE, null, null);<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> }<a name="line.513"></a> |
| <span class="sourceLineNo">514</span><a name="line.514"></a> |
| <span class="sourceLineNo">515</span> /**<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> * Calls the listener callback to notify the new state of the current<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> * dependency.<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> * No lock hold when calling this callback.<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> */<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> private void validate() {<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> m_listener.validate(this);<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> // Notify dependency validation to listeners<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> notifyListeners(DependencyEventType.VALIDATE, null, null);<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> }<a name="line.524"></a> |
| <span class="sourceLineNo">525</span><a name="line.525"></a> |
| <span class="sourceLineNo">526</span> /**<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> * Gets the actual state of the dependency.<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> * @return the state of the dependency.<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> */<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> public int getState() {<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> try {<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> acquireReadLockIfNotHeld();<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> return m_state;<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> } finally {<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> releaseReadLockIfHeld();<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> }<a name="line.536"></a> |
| <span class="sourceLineNo">537</span> }<a name="line.537"></a> |
| <span class="sourceLineNo">538</span><a name="line.538"></a> |
| <span class="sourceLineNo">539</span> /**<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> * Gets the tracked specification.<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> *<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> * @return the Class object tracked by the dependency.<a name="line.542"></a> |
| <span class="sourceLineNo">543</span> */<a name="line.543"></a> |
| <span class="sourceLineNo">544</span> public Class getSpecification() {<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> return m_specification;<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> }<a name="line.546"></a> |
| <span class="sourceLineNo">547</span><a name="line.547"></a> |
| <span class="sourceLineNo">548</span> /**<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> * Sets the required specification of this service dependency.<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> * This operation is not supported if the dependency tracking has already begun.<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> * So, we don't have to hold a lock.<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> *<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> * @param specification the required specification.<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> */<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> public void setSpecification(Class specification) {<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> if (m_tracker == null) {<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> m_specification = specification;<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> } else {<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> throw new UnsupportedOperationException("Dynamic specification change is not yet supported");<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> }<a name="line.560"></a> |
| <span class="sourceLineNo">561</span> }<a name="line.561"></a> |
| <span class="sourceLineNo">562</span><a name="line.562"></a> |
| <span class="sourceLineNo">563</span> /**<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> * Acquires the write lock only and only if the write lock is not already held by the current thread.<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> * @return {@literal true} if the lock was acquired within the method, {@literal false} otherwise.<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> */<a name="line.566"></a> |
| <span class="sourceLineNo">567</span> public boolean acquireWriteLockIfNotHeld() {<a name="line.567"></a> |
| <span class="sourceLineNo">568</span> if (! m_lock.isWriteLockedByCurrentThread()) {<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> m_lock.writeLock().lock();<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> return true;<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> }<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> return false;<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> }<a name="line.573"></a> |
| <span class="sourceLineNo">574</span><a name="line.574"></a> |
| <span class="sourceLineNo">575</span> /**<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> * Releases the write lock only and only if the write lock is held by the current thread.<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> * @return {@literal true} if the lock has no more holders, {@literal false} otherwise.<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> */<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> public boolean releaseWriteLockIfHeld() {<a name="line.579"></a> |
| <span class="sourceLineNo">580</span> if (m_lock.isWriteLockedByCurrentThread()) {<a name="line.580"></a> |
| <span class="sourceLineNo">581</span> m_lock.writeLock().unlock();<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> }<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> return m_lock.getWriteHoldCount() == 0;<a name="line.583"></a> |
| <span class="sourceLineNo">584</span> }<a name="line.584"></a> |
| <span class="sourceLineNo">585</span><a name="line.585"></a> |
| <span class="sourceLineNo">586</span> /**<a name="line.586"></a> |
| <span class="sourceLineNo">587</span> * Acquires the read lock only and only if no read lock is already held by the current thread.<a name="line.587"></a> |
| <span class="sourceLineNo">588</span> *<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> * As the introspection methods provided by this method are java 6+, we just take a read lock.<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> * @return {@literal true} if the lock was acquired within the method, {@literal false} otherwise.<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> */<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> public boolean acquireReadLockIfNotHeld() {<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> m_lock.readLock().lock();<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> return true;<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> }<a name="line.595"></a> |
| <span class="sourceLineNo">596</span><a name="line.596"></a> |
| <span class="sourceLineNo">597</span> /**<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> * Releases the read lock only and only if the read lock is held by the current thread.<a name="line.598"></a> |
| <span class="sourceLineNo">599</span> * * As the introspection methods provided by this method are java 6+, we just unlock the read lock.<a name="line.599"></a> |
| <span class="sourceLineNo">600</span> * @return {@literal true} if the lock has no more holders, {@literal false} otherwise.<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> */<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> public boolean releaseReadLockIfHeld() {<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> try {<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> m_lock.readLock().unlock();<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> } catch (IllegalMonitorStateException e) {<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> // Oupsy we were not holding the lock...<a name="line.606"></a> |
| <span class="sourceLineNo">607</span> }<a name="line.607"></a> |
| <span class="sourceLineNo">608</span> return true;<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> }<a name="line.609"></a> |
| <span class="sourceLineNo">610</span><a name="line.610"></a> |
| <span class="sourceLineNo">611</span> /**<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> * Returns the dependency filter (String form).<a name="line.612"></a> |
| <span class="sourceLineNo">613</span> *<a name="line.613"></a> |
| <span class="sourceLineNo">614</span> * @return the String form of the LDAP filter used by this dependency,<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> * <code>null</code> if not set.<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> */<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> public String getFilter() {<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> Filter filter;<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> try {<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> acquireReadLockIfNotHeld();<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> filter = m_serviceReferenceManager.getFilter();<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> } finally {<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> releaseReadLockIfHeld();<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> }<a name="line.624"></a> |
| <span class="sourceLineNo">625</span><a name="line.625"></a> |
| <span class="sourceLineNo">626</span> if (filter == null) {<a name="line.626"></a> |
| <span class="sourceLineNo">627</span> return null;<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> } else {<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> return filter.toString();<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> }<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> }<a name="line.631"></a> |
| <span class="sourceLineNo">632</span><a name="line.632"></a> |
| <span class="sourceLineNo">633</span> /**<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> * Sets the filter of the dependency. This method recomputes the<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> * matching set and call the onDependencyReconfiguration callback.<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> *<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> * @param filter the new LDAP filter.<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> */<a name="line.638"></a> |
| <span class="sourceLineNo">639</span> public void setFilter(Filter filter) {<a name="line.639"></a> |
| <span class="sourceLineNo">640</span> try {<a name="line.640"></a> |
| <span class="sourceLineNo">641</span> acquireWriteLockIfNotHeld();<a name="line.641"></a> |
| <span class="sourceLineNo">642</span> ServiceReferenceManager.ChangeSet changeSet = m_serviceReferenceManager.setFilter(filter, m_tracker);<a name="line.642"></a> |
| <span class="sourceLineNo">643</span> // We call this method when holding the lock, but the method may decide to release the lock to invoke<a name="line.643"></a> |
| <span class="sourceLineNo">644</span> // callbacks, so we must defensively unlock the lock in the finally block.<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> applyReconfiguration(changeSet);<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> } finally {<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> releaseWriteLockIfHeld();<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> }<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> }<a name="line.649"></a> |
| <span class="sourceLineNo">650</span><a name="line.650"></a> |
| <span class="sourceLineNo">651</span> /**<a name="line.651"></a> |
| <span class="sourceLineNo">652</span> * Applies the given reconfiguration.<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> * This method check if the current thread is holding the write lock, if not, acquire it.<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> * The lock will be released before calling callbacks. As a consequence, the caller has to check if the lock is<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> * still hold when this method returns.<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> * @param changeSet the reconfiguration changes<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> */<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> public void applyReconfiguration(ServiceReferenceManager.ChangeSet changeSet) {<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> List<ServiceReference> arr = new ArrayList<ServiceReference>();<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> List<ServiceReference> dep = new ArrayList<ServiceReference>();<a name="line.660"></a> |
| <span class="sourceLineNo">661</span><a name="line.661"></a> |
| <span class="sourceLineNo">662</span> try {<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> acquireWriteLockIfNotHeld();<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> if (m_tracker == null) {<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> // Nothing else to do.<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> return;<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> } else {<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> // Update bindings<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> m_boundServices.clear();<a name="line.669"></a> |
| <span class="sourceLineNo">670</span> if (m_aggregate) {<a name="line.670"></a> |
| <span class="sourceLineNo">671</span> m_boundServices = new ArrayList<ServiceReference>(changeSet.selected);<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> arr = changeSet.arrivals;<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> dep = changeSet.departures;<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> } else {<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> ServiceReference used = null;<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> if (!m_boundServices.isEmpty()) {<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> used = m_boundServices.get(0);<a name="line.677"></a> |
| <span class="sourceLineNo">678</span> }<a name="line.678"></a> |
| <span class="sourceLineNo">679</span><a name="line.679"></a> |
| <span class="sourceLineNo">680</span> if (!changeSet.selected.isEmpty()) {<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> final ServiceReference best = changeSet.newFirstReference;<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> // We didn't a provider<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> if (used == null) {<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> // We are not bound with anyone yet, so take the first of the selected set<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> m_boundServices.add(best);<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> arr.add(best);<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> } else {<a name="line.687"></a> |
| <span class="sourceLineNo">688</span> // A provider was already bound, did we changed ?<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> if (changeSet.selected.contains(used)) {<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> // We are still valid - but in dynamic priority, we may have to change<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> if (getBindingPolicy() == DYNAMIC_PRIORITY_BINDING_POLICY && used != best) {<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> m_boundServices.add(best);<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> dep.add(used);<a name="line.693"></a> |
| <span class="sourceLineNo">694</span> arr.add(best);<a name="line.694"></a> |
| <span class="sourceLineNo">695</span> } else {<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> // We restore the old binding.<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> m_boundServices.add(used);<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> }<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> } else {<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> // The used service has left.<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> m_boundServices.add(best);<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> dep.add(used);<a name="line.702"></a> |
| <span class="sourceLineNo">703</span> arr.add(best);<a name="line.703"></a> |
| <span class="sourceLineNo">704</span> }<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> }<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> } else {<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> // We don't have any service anymore<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> if (used != null) {<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> arr.add(used);<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> }<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> }<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> }<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> }<a name="line.713"></a> |
| <span class="sourceLineNo">714</span> } finally {<a name="line.714"></a> |
| <span class="sourceLineNo">715</span> releaseWriteLockIfHeld();<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> }<a name="line.716"></a> |
| <span class="sourceLineNo">717</span><a name="line.717"></a> |
| <span class="sourceLineNo">718</span> // This method releases the exclusive lock.<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> computeAndSetDependencyState();<a name="line.719"></a> |
| <span class="sourceLineNo">720</span><a name="line.720"></a> |
| <span class="sourceLineNo">721</span> // As the previous method has released the lock, we can call the callback safely.<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> onDependencyReconfiguration(<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> dep.toArray(new ServiceReference[dep.size()]),<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> arr.toArray(new ServiceReference[arr.size()]));<a name="line.724"></a> |
| <span class="sourceLineNo">725</span><a name="line.725"></a> |
| <span class="sourceLineNo">726</span> // Notify dependency reconfiguration to listeners<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> notifyListeners(DependencyEventType.RECONFIGURED, null, null);<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> }<a name="line.728"></a> |
| <span class="sourceLineNo">729</span><a name="line.729"></a> |
| <span class="sourceLineNo">730</span> public boolean isAggregate() {<a name="line.730"></a> |
| <span class="sourceLineNo">731</span> try {<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> acquireReadLockIfNotHeld();<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> return m_aggregate;<a name="line.733"></a> |
| <span class="sourceLineNo">734</span> } finally {<a name="line.734"></a> |
| <span class="sourceLineNo">735</span> releaseReadLockIfHeld();<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> }<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> }<a name="line.737"></a> |
| <span class="sourceLineNo">738</span><a name="line.738"></a> |
| <span class="sourceLineNo">739</span> /**<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> * Sets the aggregate attribute of the current dependency.<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> * If the tracking is opened, it will call arrival and departure callbacks.<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> *<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> * @param isAggregate the new aggregate attribute value.<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> */<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> public void setAggregate(boolean isAggregate) {<a name="line.745"></a> |
| <span class="sourceLineNo">746</span> // Acquire the write lock here.<a name="line.746"></a> |
| <span class="sourceLineNo">747</span> acquireWriteLockIfNotHeld();<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> List<ServiceReference> arrivals = new ArrayList<ServiceReference>();<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> List<ServiceReference> departures = new ArrayList<ServiceReference>();<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> try {<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> if (m_tracker == null) { // Not started ...<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> m_aggregate = isAggregate;<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> } else {<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> // We become aggregate.<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> if (!m_aggregate && isAggregate) {<a name="line.755"></a> |
| <span class="sourceLineNo">756</span> m_aggregate = true;<a name="line.756"></a> |
| <span class="sourceLineNo">757</span> // Call the callback on all non already injected service.<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> if (m_state == RESOLVED) {<a name="line.758"></a> |
| <span class="sourceLineNo">759</span><a name="line.759"></a> |
| <span class="sourceLineNo">760</span> for (ServiceReference ref : m_serviceReferenceManager.getSelectedServices()) {<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> if (!m_boundServices.contains(ref)) {<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> m_boundServices.add(ref);<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> arrivals.add(ref);<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> }<a name="line.764"></a> |
| <span class="sourceLineNo">765</span> }<a name="line.765"></a> |
| <span class="sourceLineNo">766</span> }<a name="line.766"></a> |
| <span class="sourceLineNo">767</span> } else if (m_aggregate && !isAggregate) {<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> m_aggregate = false;<a name="line.768"></a> |
| <span class="sourceLineNo">769</span> // We become non-aggregate.<a name="line.769"></a> |
| <span class="sourceLineNo">770</span> if (m_state == RESOLVED) {<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> List<ServiceReference> list = new ArrayList<ServiceReference>(m_boundServices);<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> for (int i = 1; i < list.size(); i++) { // The loop begin at 1, as the 0 stays injected.<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> m_boundServices.remove(list.get(i));<a name="line.773"></a> |
| <span class="sourceLineNo">774</span> departures.add(list.get(i));<a name="line.774"></a> |
| <span class="sourceLineNo">775</span> }<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> }<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> }<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> // Else, do nothing.<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> }<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> } finally {<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> releaseWriteLockIfHeld();<a name="line.781"></a> |
| <span class="sourceLineNo">782</span> }<a name="line.782"></a> |
| <span class="sourceLineNo">783</span><a name="line.783"></a> |
| <span class="sourceLineNo">784</span> // TODO shouldn't we call onDependencyReconfiguration here????<a name="line.784"></a> |
| <span class="sourceLineNo">785</span><a name="line.785"></a> |
| <span class="sourceLineNo">786</span> // Now call callbacks, the lock is not held anymore<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> // Only one of the list is not empty..<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> try {<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> acquireReadLockIfNotHeld();<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> for (ServiceReference ref : arrivals) {<a name="line.790"></a> |
| <span class="sourceLineNo">791</span> onServiceArrival(ref);<a name="line.791"></a> |
| <span class="sourceLineNo">792</span> // Notify service binding to listeners<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> notifyListeners(DependencyEventType.BINDING, ref, m_serviceObjects.get(ref));<a name="line.793"></a> |
| <span class="sourceLineNo">794</span> }<a name="line.794"></a> |
| <span class="sourceLineNo">795</span> for (ServiceReference ref : departures) {<a name="line.795"></a> |
| <span class="sourceLineNo">796</span> onServiceDeparture(ref);<a name="line.796"></a> |
| <span class="sourceLineNo">797</span> // Notify service unbinding to listeners<a name="line.797"></a> |
| <span class="sourceLineNo">798</span> notifyListeners(DependencyEventType.UNBINDING, ref, m_serviceObjects.get(ref));<a name="line.798"></a> |
| <span class="sourceLineNo">799</span> }<a name="line.799"></a> |
| <span class="sourceLineNo">800</span> } finally {<a name="line.800"></a> |
| <span class="sourceLineNo">801</span> releaseReadLockIfHeld();<a name="line.801"></a> |
| <span class="sourceLineNo">802</span> }<a name="line.802"></a> |
| <span class="sourceLineNo">803</span><a name="line.803"></a> |
| <span class="sourceLineNo">804</span><a name="line.804"></a> |
| <span class="sourceLineNo">805</span> }<a name="line.805"></a> |
| <span class="sourceLineNo">806</span><a name="line.806"></a> |
| <span class="sourceLineNo">807</span> /**<a name="line.807"></a> |
| <span class="sourceLineNo">808</span> * Sets the optionality attribute of the current dependency.<a name="line.808"></a> |
| <span class="sourceLineNo">809</span> *<a name="line.809"></a> |
| <span class="sourceLineNo">810</span> * @param isOptional the new optional attribute value.<a name="line.810"></a> |
| <span class="sourceLineNo">811</span> */<a name="line.811"></a> |
| <span class="sourceLineNo">812</span> public void setOptionality(boolean isOptional) {<a name="line.812"></a> |
| <span class="sourceLineNo">813</span> try {<a name="line.813"></a> |
| <span class="sourceLineNo">814</span> acquireWriteLockIfNotHeld();<a name="line.814"></a> |
| <span class="sourceLineNo">815</span> m_optional = isOptional;<a name="line.815"></a> |
| <span class="sourceLineNo">816</span> computeAndSetDependencyState();<a name="line.816"></a> |
| <span class="sourceLineNo">817</span> } finally {<a name="line.817"></a> |
| <span class="sourceLineNo">818</span> releaseWriteLockIfHeld();<a name="line.818"></a> |
| <span class="sourceLineNo">819</span> }<a name="line.819"></a> |
| <span class="sourceLineNo">820</span> }<a name="line.820"></a> |
| <span class="sourceLineNo">821</span><a name="line.821"></a> |
| <span class="sourceLineNo">822</span> public boolean isOptional() {<a name="line.822"></a> |
| <span class="sourceLineNo">823</span> try {<a name="line.823"></a> |
| <span class="sourceLineNo">824</span> acquireReadLockIfNotHeld();<a name="line.824"></a> |
| <span class="sourceLineNo">825</span> return m_optional;<a name="line.825"></a> |
| <span class="sourceLineNo">826</span> } finally {<a name="line.826"></a> |
| <span class="sourceLineNo">827</span> releaseReadLockIfHeld();<a name="line.827"></a> |
| <span class="sourceLineNo">828</span> }<a name="line.828"></a> |
| <span class="sourceLineNo">829</span> }<a name="line.829"></a> |
| <span class="sourceLineNo">830</span><a name="line.830"></a> |
| <span class="sourceLineNo">831</span> /**<a name="line.831"></a> |
| <span class="sourceLineNo">832</span> * Gets the used binding policy.<a name="line.832"></a> |
| <span class="sourceLineNo">833</span> *<a name="line.833"></a> |
| <span class="sourceLineNo">834</span> * @return the current binding policy.<a name="line.834"></a> |
| <span class="sourceLineNo">835</span> */<a name="line.835"></a> |
| <span class="sourceLineNo">836</span> public int getBindingPolicy() {<a name="line.836"></a> |
| <span class="sourceLineNo">837</span> try {<a name="line.837"></a> |
| <span class="sourceLineNo">838</span> acquireReadLockIfNotHeld();<a name="line.838"></a> |
| <span class="sourceLineNo">839</span> return m_policy;<a name="line.839"></a> |
| <span class="sourceLineNo">840</span> } finally {<a name="line.840"></a> |
| <span class="sourceLineNo">841</span> releaseReadLockIfHeld();<a name="line.841"></a> |
| <span class="sourceLineNo">842</span> }<a name="line.842"></a> |
| <span class="sourceLineNo">843</span><a name="line.843"></a> |
| <span class="sourceLineNo">844</span> }<a name="line.844"></a> |
| <span class="sourceLineNo">845</span><a name="line.845"></a> |
| <span class="sourceLineNo">846</span> /**<a name="line.846"></a> |
| <span class="sourceLineNo">847</span> * Gets the used comparator name.<a name="line.847"></a> |
| <span class="sourceLineNo">848</span> * <code>null</code> if no comparator (i.e. the OSGi one is used).<a name="line.848"></a> |
| <span class="sourceLineNo">849</span> *<a name="line.849"></a> |
| <span class="sourceLineNo">850</span> * @return the comparator class name or <code>null</code> if the dependency doesn't use a comparator.<a name="line.850"></a> |
| <span class="sourceLineNo">851</span> */<a name="line.851"></a> |
| <span class="sourceLineNo">852</span> public String getComparator() {<a name="line.852"></a> |
| <span class="sourceLineNo">853</span> final Comparator<ServiceReference> comparator;<a name="line.853"></a> |
| <span class="sourceLineNo">854</span> try {<a name="line.854"></a> |
| <span class="sourceLineNo">855</span> acquireReadLockIfNotHeld();<a name="line.855"></a> |
| <span class="sourceLineNo">856</span> comparator = m_serviceReferenceManager.getComparator();<a name="line.856"></a> |
| <span class="sourceLineNo">857</span> } finally {<a name="line.857"></a> |
| <span class="sourceLineNo">858</span> releaseReadLockIfHeld();<a name="line.858"></a> |
| <span class="sourceLineNo">859</span> }<a name="line.859"></a> |
| <span class="sourceLineNo">860</span><a name="line.860"></a> |
| <span class="sourceLineNo">861</span> if (comparator != null) {<a name="line.861"></a> |
| <span class="sourceLineNo">862</span> return comparator.getClass().getName();<a name="line.862"></a> |
| <span class="sourceLineNo">863</span> } else {<a name="line.863"></a> |
| <span class="sourceLineNo">864</span> return null;<a name="line.864"></a> |
| <span class="sourceLineNo">865</span> }<a name="line.865"></a> |
| <span class="sourceLineNo">866</span> }<a name="line.866"></a> |
| <span class="sourceLineNo">867</span><a name="line.867"></a> |
| <span class="sourceLineNo">868</span> public void setComparator(Comparator<ServiceReference> cmp) {<a name="line.868"></a> |
| <span class="sourceLineNo">869</span> try {<a name="line.869"></a> |
| <span class="sourceLineNo">870</span> acquireWriteLockIfNotHeld();<a name="line.870"></a> |
| <span class="sourceLineNo">871</span> m_serviceReferenceManager.setComparator(cmp);<a name="line.871"></a> |
| <span class="sourceLineNo">872</span> } finally {<a name="line.872"></a> |
| <span class="sourceLineNo">873</span> releaseWriteLockIfHeld();<a name="line.873"></a> |
| <span class="sourceLineNo">874</span> }<a name="line.874"></a> |
| <span class="sourceLineNo">875</span> }<a name="line.875"></a> |
| <span class="sourceLineNo">876</span><a name="line.876"></a> |
| <span class="sourceLineNo">877</span> /**<a name="line.877"></a> |
| <span class="sourceLineNo">878</span> * Sets the bundle context used by this dependency.<a name="line.878"></a> |
| <span class="sourceLineNo">879</span> * This operation is not supported if the tracker is already opened, and as a consequence does not require locking.<a name="line.879"></a> |
| <span class="sourceLineNo">880</span> *<a name="line.880"></a> |
| <span class="sourceLineNo">881</span> * @param context the bundle context or service context to use<a name="line.881"></a> |
| <span class="sourceLineNo">882</span> */<a name="line.882"></a> |
| <span class="sourceLineNo">883</span> public void setBundleContext(BundleContext context) {<a name="line.883"></a> |
| <span class="sourceLineNo">884</span> if (m_tracker == null) { // Not started ...<a name="line.884"></a> |
| <span class="sourceLineNo">885</span> m_context = context;<a name="line.885"></a> |
| <span class="sourceLineNo">886</span> } else {<a name="line.886"></a> |
| <span class="sourceLineNo">887</span> throw new UnsupportedOperationException("Dynamic bundle (i.e. service) context change is not supported");<a name="line.887"></a> |
| <span class="sourceLineNo">888</span> }<a name="line.888"></a> |
| <span class="sourceLineNo">889</span> }<a name="line.889"></a> |
| <span class="sourceLineNo">890</span><a name="line.890"></a> |
| <span class="sourceLineNo">891</span> /**<a name="line.891"></a> |
| <span class="sourceLineNo">892</span> * Gets a service object for the given reference.<a name="line.892"></a> |
| <span class="sourceLineNo">893</span> * The service object is stored to handle custom policies.<a name="line.893"></a> |
| <span class="sourceLineNo">894</span> *<a name="line.894"></a> |
| <span class="sourceLineNo">895</span> * @param ref the wanted service reference<a name="line.895"></a> |
| <span class="sourceLineNo">896</span> * @return the service object attached to the given reference<a name="line.896"></a> |
| <span class="sourceLineNo">897</span> */<a name="line.897"></a> |
| <span class="sourceLineNo">898</span> public Object getService(ServiceReference ref) {<a name="line.898"></a> |
| <span class="sourceLineNo">899</span> return getService(ref, true);<a name="line.899"></a> |
| <span class="sourceLineNo">900</span> }<a name="line.900"></a> |
| <span class="sourceLineNo">901</span><a name="line.901"></a> |
| <span class="sourceLineNo">902</span> /**<a name="line.902"></a> |
| <span class="sourceLineNo">903</span> * Gets a service object for the given reference.<a name="line.903"></a> |
| <span class="sourceLineNo">904</span> *<a name="line.904"></a> |
| <span class="sourceLineNo">905</span> * @param ref the wanted service reference<a name="line.905"></a> |
| <span class="sourceLineNo">906</span> * @param store enables / disables the storing of the reference.<a name="line.906"></a> |
| <span class="sourceLineNo">907</span> * @return the service object attached to the given reference<a name="line.907"></a> |
| <span class="sourceLineNo">908</span> */<a name="line.908"></a> |
| <span class="sourceLineNo">909</span> public Object getService(ServiceReference ref, boolean store) {<a name="line.909"></a> |
| <span class="sourceLineNo">910</span> Object svc = m_tracker.getService(ref);<a name="line.910"></a> |
| <span class="sourceLineNo">911</span> IPOJOServiceFactory factory = null;<a name="line.911"></a> |
| <span class="sourceLineNo">912</span><a name="line.912"></a> |
| <span class="sourceLineNo">913</span> if (svc instanceof IPOJOServiceFactory) {<a name="line.913"></a> |
| <span class="sourceLineNo">914</span> factory = (IPOJOServiceFactory) svc;<a name="line.914"></a> |
| <span class="sourceLineNo">915</span> svc = factory.getService(m_instance);<a name="line.915"></a> |
| <span class="sourceLineNo">916</span> }<a name="line.916"></a> |
| <span class="sourceLineNo">917</span><a name="line.917"></a> |
| <span class="sourceLineNo">918</span> if (store) {<a name="line.918"></a> |
| <span class="sourceLineNo">919</span> try {<a name="line.919"></a> |
| <span class="sourceLineNo">920</span> acquireWriteLockIfNotHeld();<a name="line.920"></a> |
| <span class="sourceLineNo">921</span> if (factory != null) {<a name="line.921"></a> |
| <span class="sourceLineNo">922</span> m_serviceObjects.put(ref, factory);<a name="line.922"></a> |
| <span class="sourceLineNo">923</span> } else {<a name="line.923"></a> |
| <span class="sourceLineNo">924</span> m_serviceObjects.put(ref, svc);<a name="line.924"></a> |
| <span class="sourceLineNo">925</span> }<a name="line.925"></a> |
| <span class="sourceLineNo">926</span> } finally {<a name="line.926"></a> |
| <span class="sourceLineNo">927</span> releaseWriteLockIfHeld();<a name="line.927"></a> |
| <span class="sourceLineNo">928</span> }<a name="line.928"></a> |
| <span class="sourceLineNo">929</span> }<a name="line.929"></a> |
| <span class="sourceLineNo">930</span><a name="line.930"></a> |
| <span class="sourceLineNo">931</span> return svc;<a name="line.931"></a> |
| <span class="sourceLineNo">932</span> }<a name="line.932"></a> |
| <span class="sourceLineNo">933</span><a name="line.933"></a> |
| <span class="sourceLineNo">934</span> /**<a name="line.934"></a> |
| <span class="sourceLineNo">935</span> * Ungets a used service reference.<a name="line.935"></a> |
| <span class="sourceLineNo">936</span> *<a name="line.936"></a> |
| <span class="sourceLineNo">937</span> * @param ref the reference to unget.<a name="line.937"></a> |
| <span class="sourceLineNo">938</span> */<a name="line.938"></a> |
| <span class="sourceLineNo">939</span> public void ungetService(ServiceReference ref) {<a name="line.939"></a> |
| <span class="sourceLineNo">940</span> m_tracker.ungetService(ref);<a name="line.940"></a> |
| <span class="sourceLineNo">941</span> Object obj;<a name="line.941"></a> |
| <span class="sourceLineNo">942</span> try {<a name="line.942"></a> |
| <span class="sourceLineNo">943</span> acquireWriteLockIfNotHeld();<a name="line.943"></a> |
| <span class="sourceLineNo">944</span> obj = m_serviceObjects.remove(ref);<a name="line.944"></a> |
| <span class="sourceLineNo">945</span> } finally {<a name="line.945"></a> |
| <span class="sourceLineNo">946</span> releaseWriteLockIfHeld();<a name="line.946"></a> |
| <span class="sourceLineNo">947</span> }<a name="line.947"></a> |
| <span class="sourceLineNo">948</span><a name="line.948"></a> |
| <span class="sourceLineNo">949</span> // Call the callback outside the lock.<a name="line.949"></a> |
| <span class="sourceLineNo">950</span> if (obj != null && obj instanceof IPOJOServiceFactory) {<a name="line.950"></a> |
| <span class="sourceLineNo">951</span> ((IPOJOServiceFactory) obj).ungetService(m_instance, obj);<a name="line.951"></a> |
| <span class="sourceLineNo">952</span> }<a name="line.952"></a> |
| <span class="sourceLineNo">953</span> }<a name="line.953"></a> |
| <span class="sourceLineNo">954</span><a name="line.954"></a> |
| <span class="sourceLineNo">955</span> public ContextSourceManager getContextSourceManager() {<a name="line.955"></a> |
| <span class="sourceLineNo">956</span> // Final member, no lock required.<a name="line.956"></a> |
| <span class="sourceLineNo">957</span> return m_contextSourceManager;<a name="line.957"></a> |
| <span class="sourceLineNo">958</span> }<a name="line.958"></a> |
| <span class="sourceLineNo">959</span><a name="line.959"></a> |
| <span class="sourceLineNo">960</span> /**<a name="line.960"></a> |
| <span class="sourceLineNo">961</span> * Gets the dependency id.<a name="line.961"></a> |
| <span class="sourceLineNo">962</span> *<a name="line.962"></a> |
| <span class="sourceLineNo">963</span> * @return the dependency id. Specification name by default.<a name="line.963"></a> |
| <span class="sourceLineNo">964</span> */<a name="line.964"></a> |
| <span class="sourceLineNo">965</span> public String getId() {<a name="line.965"></a> |
| <span class="sourceLineNo">966</span> // Immutable, no lock required.<a name="line.966"></a> |
| <span class="sourceLineNo">967</span> return getSpecification().getName();<a name="line.967"></a> |
| <span class="sourceLineNo">968</span> }<a name="line.968"></a> |
| <span class="sourceLineNo">969</span><a name="line.969"></a> |
| <span class="sourceLineNo">970</span> /**<a name="line.970"></a> |
| <span class="sourceLineNo">971</span> * Callbacks call by the ServiceReferenceManager when the selected service set has changed.<a name="line.971"></a> |
| <span class="sourceLineNo">972</span> * @param set the change set.<a name="line.972"></a> |
| <span class="sourceLineNo">973</span> */<a name="line.973"></a> |
| <span class="sourceLineNo">974</span> public void onChange(ServiceReferenceManager.ChangeSet set) {<a name="line.974"></a> |
| <span class="sourceLineNo">975</span> try {<a name="line.975"></a> |
| <span class="sourceLineNo">976</span> acquireWriteLockIfNotHeld();<a name="line.976"></a> |
| <span class="sourceLineNo">977</span> // First handle the static case with a frozen state<a name="line.977"></a> |
| <span class="sourceLineNo">978</span> if (isFrozen() && getState() != BROKEN) {<a name="line.978"></a> |
| <span class="sourceLineNo">979</span> for (ServiceReference ref : set.departures) {<a name="line.979"></a> |
| <span class="sourceLineNo">980</span> // Check if any of the service that have left was in used.<a name="line.980"></a> |
| <span class="sourceLineNo">981</span> if (m_boundServices.contains(ref)) {<a name="line.981"></a> |
| <span class="sourceLineNo">982</span> // Static dependency broken.<a name="line.982"></a> |
| <span class="sourceLineNo">983</span> m_state = BROKEN;<a name="line.983"></a> |
| <span class="sourceLineNo">984</span><a name="line.984"></a> |
| <span class="sourceLineNo">985</span> // We are going to call callbacks, releasing the lock.<a name="line.985"></a> |
| <span class="sourceLineNo">986</span> Object svc = m_serviceObjects.get(ref);<a name="line.986"></a> |
| <span class="sourceLineNo">987</span> releaseWriteLockIfHeld();<a name="line.987"></a> |
| <span class="sourceLineNo">988</span><a name="line.988"></a> |
| <span class="sourceLineNo">989</span> // Notify listeners<a name="line.989"></a> |
| <span class="sourceLineNo">990</span> notifyListeners(DependencyEventType.UNBINDING, ref, svc);<a name="line.990"></a> |
| <span class="sourceLineNo">991</span> notifyListeners(DependencyEventType.DEPARTURE, ref, null);<a name="line.991"></a> |
| <span class="sourceLineNo">992</span><a name="line.992"></a> |
| <span class="sourceLineNo">993</span> invalidate(); // This will invalidate the instance.<a name="line.993"></a> |
| <span class="sourceLineNo">994</span> m_instance.stop(); // Stop the instance<a name="line.994"></a> |
| <span class="sourceLineNo">995</span> unfreeze();<a name="line.995"></a> |
| <span class="sourceLineNo">996</span> m_instance.start();<a name="line.996"></a> |
| <span class="sourceLineNo">997</span> return;<a name="line.997"></a> |
| <span class="sourceLineNo">998</span> }<a name="line.998"></a> |
| <span class="sourceLineNo">999</span> }<a name="line.999"></a> |
| <span class="sourceLineNo">1000</span> }<a name="line.1000"></a> |
| <span class="sourceLineNo">1001</span><a name="line.1001"></a> |
| <span class="sourceLineNo">1002</span> List<ServiceReference> arrivals = new ArrayList<ServiceReference>();<a name="line.1002"></a> |
| <span class="sourceLineNo">1003</span> List<ServiceReference> departures = new ArrayList<ServiceReference>();<a name="line.1003"></a> |
| <span class="sourceLineNo">1004</span><a name="line.1004"></a> |
| <span class="sourceLineNo">1005</span> // Manage departures<a name="line.1005"></a> |
| <span class="sourceLineNo">1006</span> // We unbind all bound services that are leaving.<a name="line.1006"></a> |
| <span class="sourceLineNo">1007</span> for (ServiceReference ref : set.departures) {<a name="line.1007"></a> |
| <span class="sourceLineNo">1008</span> if (m_boundServices.contains(ref)) {<a name="line.1008"></a> |
| <span class="sourceLineNo">1009</span> // We were using the reference<a name="line.1009"></a> |
| <span class="sourceLineNo">1010</span> m_boundServices.remove(ref);<a name="line.1010"></a> |
| <span class="sourceLineNo">1011</span> departures.add(ref);<a name="line.1011"></a> |
| <span class="sourceLineNo">1012</span> }<a name="line.1012"></a> |
| <span class="sourceLineNo">1013</span> }<a name="line.1013"></a> |
| <span class="sourceLineNo">1014</span><a name="line.1014"></a> |
| <span class="sourceLineNo">1015</span> // Manage arrivals<a name="line.1015"></a> |
| <span class="sourceLineNo">1016</span> // For aggregate dependencies, call onServiceArrival for all services not-yet-bound and in the order of the<a name="line.1016"></a> |
| <span class="sourceLineNo">1017</span> // selection.<a name="line.1017"></a> |
| <span class="sourceLineNo">1018</span> if (m_aggregate) {<a name="line.1018"></a> |
| <span class="sourceLineNo">1019</span> // If the dependency is not already in used,<a name="line.1019"></a> |
| <span class="sourceLineNo">1020</span> // the bindings must be sorted as in set.selected<a name="line.1020"></a> |
| <span class="sourceLineNo">1021</span> if (m_serviceObjects.isEmpty() || DYNAMIC_PRIORITY_BINDING_POLICY == getBindingPolicy()) {<a name="line.1021"></a> |
| <span class="sourceLineNo">1022</span> m_boundServices.clear();<a name="line.1022"></a> |
| <span class="sourceLineNo">1023</span> m_boundServices.addAll(set.selected);<a name="line.1023"></a> |
| <span class="sourceLineNo">1024</span> }<a name="line.1024"></a> |
| <span class="sourceLineNo">1025</span><a name="line.1025"></a> |
| <span class="sourceLineNo">1026</span> // Now we notify from the arrival.<a name="line.1026"></a> |
| <span class="sourceLineNo">1027</span> // If we didn't add the reference yet, we add it.<a name="line.1027"></a> |
| <span class="sourceLineNo">1028</span> for (ServiceReference ref : set.arrivals) {<a name="line.1028"></a> |
| <span class="sourceLineNo">1029</span> // We bind all not-already bound services, so it's an arrival<a name="line.1029"></a> |
| <span class="sourceLineNo">1030</span> if (!m_boundServices.contains(ref)) {<a name="line.1030"></a> |
| <span class="sourceLineNo">1031</span> m_boundServices.add(ref);<a name="line.1031"></a> |
| <span class="sourceLineNo">1032</span> }<a name="line.1032"></a> |
| <span class="sourceLineNo">1033</span> arrivals.add(ref);<a name="line.1033"></a> |
| <span class="sourceLineNo">1034</span> }<a name="line.1034"></a> |
| <span class="sourceLineNo">1035</span> } else {<a name="line.1035"></a> |
| <span class="sourceLineNo">1036</span> if (!set.selected.isEmpty()) {<a name="line.1036"></a> |
| <span class="sourceLineNo">1037</span> final ServiceReference best = set.selected.get(0);<a name="line.1037"></a> |
| <span class="sourceLineNo">1038</span> // We have a provider<a name="line.1038"></a> |
| <span class="sourceLineNo">1039</span> if (m_boundServices.isEmpty()) {<a name="line.1039"></a> |
| <span class="sourceLineNo">1040</span> // We are not bound with anyone yet, so take the first of the selected set<a name="line.1040"></a> |
| <span class="sourceLineNo">1041</span> m_boundServices.add(best);<a name="line.1041"></a> |
| <span class="sourceLineNo">1042</span> arrivals.add(best);<a name="line.1042"></a> |
| <span class="sourceLineNo">1043</span> } else {<a name="line.1043"></a> |
| <span class="sourceLineNo">1044</span> final ServiceReference current = m_boundServices.get(0);<a name="line.1044"></a> |
| <span class="sourceLineNo">1045</span> // We are already bound, to the rebinding decision depends on the binding strategy<a name="line.1045"></a> |
| <span class="sourceLineNo">1046</span> if (getBindingPolicy() == DYNAMIC_PRIORITY_BINDING_POLICY) {<a name="line.1046"></a> |
| <span class="sourceLineNo">1047</span> // Rebinding in the DP binding policy if the bound one if not the new best one.<a name="line.1047"></a> |
| <span class="sourceLineNo">1048</span> if (current != best) {<a name="line.1048"></a> |
| <span class="sourceLineNo">1049</span> m_boundServices.remove(current);<a name="line.1049"></a> |
| <span class="sourceLineNo">1050</span> m_boundServices.add(best);<a name="line.1050"></a> |
| <span class="sourceLineNo">1051</span> departures.add(current);<a name="line.1051"></a> |
| <span class="sourceLineNo">1052</span> arrivals.add(best);<a name="line.1052"></a> |
| <span class="sourceLineNo">1053</span> }<a name="line.1053"></a> |
| <span class="sourceLineNo">1054</span> } else {<a name="line.1054"></a> |
| <span class="sourceLineNo">1055</span> // In static and dynamic binding policy, if the service is not yet used and the new best is not<a name="line.1055"></a> |
| <span class="sourceLineNo">1056</span> // the currently selected one, we should switch.<a name="line.1056"></a> |
| <span class="sourceLineNo">1057</span> boolean isUsed = m_serviceObjects.containsKey(current);<a name="line.1057"></a> |
| <span class="sourceLineNo">1058</span> if (!isUsed && current != best) {<a name="line.1058"></a> |
| <span class="sourceLineNo">1059</span> m_boundServices.remove(current);<a name="line.1059"></a> |
| <span class="sourceLineNo">1060</span> m_boundServices.add(best);<a name="line.1060"></a> |
| <span class="sourceLineNo">1061</span> departures.add(current);<a name="line.1061"></a> |
| <span class="sourceLineNo">1062</span> arrivals.add(best);<a name="line.1062"></a> |
| <span class="sourceLineNo">1063</span> }<a name="line.1063"></a> |
| <span class="sourceLineNo">1064</span> }<a name="line.1064"></a> |
| <span class="sourceLineNo">1065</span> }<a name="line.1065"></a> |
| <span class="sourceLineNo">1066</span> }<a name="line.1066"></a> |
| <span class="sourceLineNo">1067</span> }<a name="line.1067"></a> |
| <span class="sourceLineNo">1068</span><a name="line.1068"></a> |
| <span class="sourceLineNo">1069</span> // Before leaving the protected region, copy used services.<a name="line.1069"></a> |
| <span class="sourceLineNo">1070</span> Map<ServiceReference, Object> services = new HashMap<ServiceReference, Object>(m_serviceObjects);<a name="line.1070"></a> |
| <span class="sourceLineNo">1071</span><a name="line.1071"></a> |
| <span class="sourceLineNo">1072</span> // Leaving the locked region to invoke callbacks<a name="line.1072"></a> |
| <span class="sourceLineNo">1073</span> releaseWriteLockIfHeld();<a name="line.1073"></a> |
| <span class="sourceLineNo">1074</span><a name="line.1074"></a> |
| <span class="sourceLineNo">1075</span> for (ServiceReference ref : departures) {<a name="line.1075"></a> |
| <span class="sourceLineNo">1076</span> onServiceDeparture(ref);<a name="line.1076"></a> |
| <span class="sourceLineNo">1077</span> // Notify service unbinding to listeners<a name="line.1077"></a> |
| <span class="sourceLineNo">1078</span> Object svc = services.get(ref);<a name="line.1078"></a> |
| <span class="sourceLineNo">1079</span> notifyListeners(DependencyEventType.UNBINDING, ref, svc);<a name="line.1079"></a> |
| <span class="sourceLineNo">1080</span> }<a name="line.1080"></a> |
| <span class="sourceLineNo">1081</span> for (ServiceReference ref : arrivals) {<a name="line.1081"></a> |
| <span class="sourceLineNo">1082</span> onServiceArrival(ref);<a name="line.1082"></a> |
| <span class="sourceLineNo">1083</span> // Notify service binding to listeners<a name="line.1083"></a> |
| <span class="sourceLineNo">1084</span> Object svc = services.get(ref);<a name="line.1084"></a> |
| <span class="sourceLineNo">1085</span> notifyListeners(DependencyEventType.BINDING, ref, svc);<a name="line.1085"></a> |
| <span class="sourceLineNo">1086</span> }<a name="line.1086"></a> |
| <span class="sourceLineNo">1087</span> // Do we have a modified service ?<a name="line.1087"></a> |
| <span class="sourceLineNo">1088</span> if (set.modified != null && m_boundServices.contains(set.modified)) {<a name="line.1088"></a> |
| <span class="sourceLineNo">1089</span> onServiceModification(set.modified);<a name="line.1089"></a> |
| <span class="sourceLineNo">1090</span> // TODO call boundServiceModified on listeners???<a name="line.1090"></a> |
| <span class="sourceLineNo">1091</span> }<a name="line.1091"></a> |
| <span class="sourceLineNo">1092</span><a name="line.1092"></a> |
| <span class="sourceLineNo">1093</span> // Did our state changed ?<a name="line.1093"></a> |
| <span class="sourceLineNo">1094</span> // this method will manage its own synchronization.<a name="line.1094"></a> |
| <span class="sourceLineNo">1095</span> computeAndSetDependencyState();<a name="line.1095"></a> |
| <span class="sourceLineNo">1096</span> } finally {<a name="line.1096"></a> |
| <span class="sourceLineNo">1097</span> releaseWriteLockIfHeld();<a name="line.1097"></a> |
| <span class="sourceLineNo">1098</span> }<a name="line.1098"></a> |
| <span class="sourceLineNo">1099</span> }<a name="line.1099"></a> |
| <span class="sourceLineNo">1100</span><a name="line.1100"></a> |
| <span class="sourceLineNo">1101</span> public ServiceReferenceManager getServiceReferenceManager() {<a name="line.1101"></a> |
| <span class="sourceLineNo">1102</span> return m_serviceReferenceManager;<a name="line.1102"></a> |
| <span class="sourceLineNo">1103</span> }<a name="line.1103"></a> |
| <span class="sourceLineNo">1104</span><a name="line.1104"></a> |
| <span class="sourceLineNo">1105</span> public Tracker getTracker() {<a name="line.1105"></a> |
| <span class="sourceLineNo">1106</span> return m_tracker;<a name="line.1106"></a> |
| <span class="sourceLineNo">1107</span> }<a name="line.1107"></a> |
| <span class="sourceLineNo">1108</span><a name="line.1108"></a> |
| <span class="sourceLineNo">1109</span> public enum DependencyEventType {<a name="line.1109"></a> |
| <span class="sourceLineNo">1110</span> VALIDATE,<a name="line.1110"></a> |
| <span class="sourceLineNo">1111</span> INVALIDATE,<a name="line.1111"></a> |
| <span class="sourceLineNo">1112</span> ARRIVAL,<a name="line.1112"></a> |
| <span class="sourceLineNo">1113</span> MODIFIED,<a name="line.1113"></a> |
| <span class="sourceLineNo">1114</span> DEPARTURE,<a name="line.1114"></a> |
| <span class="sourceLineNo">1115</span> BINDING,<a name="line.1115"></a> |
| <span class="sourceLineNo">1116</span> UNBINDING,<a name="line.1116"></a> |
| <span class="sourceLineNo">1117</span> RECONFIGURED<a name="line.1117"></a> |
| <span class="sourceLineNo">1118</span> }<a name="line.1118"></a> |
| <span class="sourceLineNo">1119</span><a name="line.1119"></a> |
| <span class="sourceLineNo">1120</span> /**<a name="line.1120"></a> |
| <span class="sourceLineNo">1121</span> * Add the given listener to the dependency model's list of listeners.<a name="line.1121"></a> |
| <span class="sourceLineNo">1122</span> *<a name="line.1122"></a> |
| <span class="sourceLineNo">1123</span> * @param listener the {@code DependencyModelListener} object to be added<a name="line.1123"></a> |
| <span class="sourceLineNo">1124</span> * @throws NullPointerException if {@code listener} is {@code null}<a name="line.1124"></a> |
| <span class="sourceLineNo">1125</span> */<a name="line.1125"></a> |
| <span class="sourceLineNo">1126</span> public void addListener(DependencyModelListener listener) {<a name="line.1126"></a> |
| <span class="sourceLineNo">1127</span> if (listener == null) {<a name="line.1127"></a> |
| <span class="sourceLineNo">1128</span> throw new NullPointerException("null listener");<a name="line.1128"></a> |
| <span class="sourceLineNo">1129</span> }<a name="line.1129"></a> |
| <span class="sourceLineNo">1130</span> synchronized (m_listeners) {<a name="line.1130"></a> |
| <span class="sourceLineNo">1131</span> m_listeners.add(listener);<a name="line.1131"></a> |
| <span class="sourceLineNo">1132</span> }<a name="line.1132"></a> |
| <span class="sourceLineNo">1133</span> }<a name="line.1133"></a> |
| <span class="sourceLineNo">1134</span><a name="line.1134"></a> |
| <span class="sourceLineNo">1135</span> /**<a name="line.1135"></a> |
| <span class="sourceLineNo">1136</span> * Remove the given listener from the dependency model's list of listeners.<a name="line.1136"></a> |
| <span class="sourceLineNo">1137</span> *<a name="line.1137"></a> |
| <span class="sourceLineNo">1138</span> * @param listener the {@code DependencyModelListener} object to be removed<a name="line.1138"></a> |
| <span class="sourceLineNo">1139</span> * @throws NullPointerException if {@code listener} is {@code null}<a name="line.1139"></a> |
| <span class="sourceLineNo">1140</span> * @throws NoSuchElementException if {@code listener} wasn't present in the dependency model's list of listeners<a name="line.1140"></a> |
| <span class="sourceLineNo">1141</span> */<a name="line.1141"></a> |
| <span class="sourceLineNo">1142</span> public void removeListener(DependencyModelListener listener) {<a name="line.1142"></a> |
| <span class="sourceLineNo">1143</span> if (listener == null) {<a name="line.1143"></a> |
| <span class="sourceLineNo">1144</span> throw new NullPointerException("null listener");<a name="line.1144"></a> |
| <span class="sourceLineNo">1145</span> }<a name="line.1145"></a> |
| <span class="sourceLineNo">1146</span> synchronized (m_listeners) {<a name="line.1146"></a> |
| <span class="sourceLineNo">1147</span> // We definitely cannot rely on listener's equals method...<a name="line.1147"></a> |
| <span class="sourceLineNo">1148</span> // ...so we need to manually search for the listener, using ==.<a name="line.1148"></a> |
| <span class="sourceLineNo">1149</span> int i = -1;<a name="line.1149"></a> |
| <span class="sourceLineNo">1150</span> for(int j = m_listeners.size() -1; j>=0 ; j--) {<a name="line.1150"></a> |
| <span class="sourceLineNo">1151</span> if (m_listeners.get(j) == listener) {<a name="line.1151"></a> |
| <span class="sourceLineNo">1152</span> // Found!<a name="line.1152"></a> |
| <span class="sourceLineNo">1153</span> i = j;<a name="line.1153"></a> |
| <span class="sourceLineNo">1154</span> break;<a name="line.1154"></a> |
| <span class="sourceLineNo">1155</span> }<a name="line.1155"></a> |
| <span class="sourceLineNo">1156</span> }<a name="line.1156"></a> |
| <span class="sourceLineNo">1157</span> if (i != -1) {<a name="line.1157"></a> |
| <span class="sourceLineNo">1158</span> m_listeners.remove(i);<a name="line.1158"></a> |
| <span class="sourceLineNo">1159</span> } else {<a name="line.1159"></a> |
| <span class="sourceLineNo">1160</span> throw new NoSuchElementException("no such listener");<a name="line.1160"></a> |
| <span class="sourceLineNo">1161</span> }<a name="line.1161"></a> |
| <span class="sourceLineNo">1162</span> }<a name="line.1162"></a> |
| <span class="sourceLineNo">1163</span> }<a name="line.1163"></a> |
| <span class="sourceLineNo">1164</span><a name="line.1164"></a> |
| <span class="sourceLineNo">1165</span> /**<a name="line.1165"></a> |
| <span class="sourceLineNo">1166</span> * Notify all listeners that a change has occurred in this dependency model.<a name="line.1166"></a> |
| <span class="sourceLineNo">1167</span> *<a name="line.1167"></a> |
| <span class="sourceLineNo">1168</span> * @param type the type of event<a name="line.1168"></a> |
| <span class="sourceLineNo">1169</span> * @param service the reference of the concerned service (may be null)<a name="line.1169"></a> |
| <span class="sourceLineNo">1170</span> * @param object the concerned service object (may be null)<a name="line.1170"></a> |
| <span class="sourceLineNo">1171</span> */<a name="line.1171"></a> |
| <span class="sourceLineNo">1172</span> public void notifyListeners(DependencyEventType type, ServiceReference<?> service, Object object) {<a name="line.1172"></a> |
| <span class="sourceLineNo">1173</span> // Get a snapshot of the listeners<a name="line.1173"></a> |
| <span class="sourceLineNo">1174</span> List<DependencyModelListener> tmp;<a name="line.1174"></a> |
| <span class="sourceLineNo">1175</span> synchronized (m_listeners) {<a name="line.1175"></a> |
| <span class="sourceLineNo">1176</span> tmp = new ArrayList<DependencyModelListener>(m_listeners);<a name="line.1176"></a> |
| <span class="sourceLineNo">1177</span> }<a name="line.1177"></a> |
| <span class="sourceLineNo">1178</span> // Do notify, outside the m_listeners lock<a name="line.1178"></a> |
| <span class="sourceLineNo">1179</span> for (DependencyModelListener l : tmp) {<a name="line.1179"></a> |
| <span class="sourceLineNo">1180</span> try {<a name="line.1180"></a> |
| <span class="sourceLineNo">1181</span> switch (type) {<a name="line.1181"></a> |
| <span class="sourceLineNo">1182</span> case VALIDATE:<a name="line.1182"></a> |
| <span class="sourceLineNo">1183</span> l.validate(this);<a name="line.1183"></a> |
| <span class="sourceLineNo">1184</span> break;<a name="line.1184"></a> |
| <span class="sourceLineNo">1185</span> case INVALIDATE:<a name="line.1185"></a> |
| <span class="sourceLineNo">1186</span> l.invalidate(this);<a name="line.1186"></a> |
| <span class="sourceLineNo">1187</span> break;<a name="line.1187"></a> |
| <span class="sourceLineNo">1188</span> case ARRIVAL:<a name="line.1188"></a> |
| <span class="sourceLineNo">1189</span> l.matchingServiceArrived(this, service);<a name="line.1189"></a> |
| <span class="sourceLineNo">1190</span> break;<a name="line.1190"></a> |
| <span class="sourceLineNo">1191</span> case MODIFIED:<a name="line.1191"></a> |
| <span class="sourceLineNo">1192</span> l.matchingServiceModified(this, service);<a name="line.1192"></a> |
| <span class="sourceLineNo">1193</span> break;<a name="line.1193"></a> |
| <span class="sourceLineNo">1194</span> case DEPARTURE:<a name="line.1194"></a> |
| <span class="sourceLineNo">1195</span> l.matchingServiceDeparted(this, service);<a name="line.1195"></a> |
| <span class="sourceLineNo">1196</span> break;<a name="line.1196"></a> |
| <span class="sourceLineNo">1197</span> case BINDING:<a name="line.1197"></a> |
| <span class="sourceLineNo">1198</span> l.serviceBound(this, service, object);<a name="line.1198"></a> |
| <span class="sourceLineNo">1199</span> break;<a name="line.1199"></a> |
| <span class="sourceLineNo">1200</span> case UNBINDING:<a name="line.1200"></a> |
| <span class="sourceLineNo">1201</span> l.serviceUnbound(this, service, object);<a name="line.1201"></a> |
| <span class="sourceLineNo">1202</span> break;<a name="line.1202"></a> |
| <span class="sourceLineNo">1203</span> case RECONFIGURED:<a name="line.1203"></a> |
| <span class="sourceLineNo">1204</span> l.reconfigured(this);<a name="line.1204"></a> |
| <span class="sourceLineNo">1205</span> break;<a name="line.1205"></a> |
| <span class="sourceLineNo">1206</span> }<a name="line.1206"></a> |
| <span class="sourceLineNo">1207</span> } catch (Throwable e) {<a name="line.1207"></a> |
| <span class="sourceLineNo">1208</span> // Put a warning on the logger, and continue<a name="line.1208"></a> |
| <span class="sourceLineNo">1209</span> getComponentInstance().getFactory().getLogger().log(Log.WARNING,<a name="line.1209"></a> |
| <span class="sourceLineNo">1210</span> String.format(<a name="line.1210"></a> |
| <span class="sourceLineNo">1211</span> "[%s] A DependencyModelListener has failed: %s",<a name="line.1211"></a> |
| <span class="sourceLineNo">1212</span> getComponentInstance().getInstanceName(),<a name="line.1212"></a> |
| <span class="sourceLineNo">1213</span> e.getMessage())<a name="line.1213"></a> |
| <span class="sourceLineNo">1214</span> , e);<a name="line.1214"></a> |
| <span class="sourceLineNo">1215</span> }<a name="line.1215"></a> |
| <span class="sourceLineNo">1216</span> }<a name="line.1216"></a> |
| <span class="sourceLineNo">1217</span> }<a name="line.1217"></a> |
| <span class="sourceLineNo">1218</span><a name="line.1218"></a> |
| <span class="sourceLineNo">1219</span> /**<a name="line.1219"></a> |
| <span class="sourceLineNo">1220</span> * Removes all the listeners from this dependency before it gets disposed.<a name="line.1220"></a> |
| <span class="sourceLineNo">1221</span> */<a name="line.1221"></a> |
| <span class="sourceLineNo">1222</span> public void cleanup() {<a name="line.1222"></a> |
| <span class="sourceLineNo">1223</span> synchronized (m_listeners) {<a name="line.1223"></a> |
| <span class="sourceLineNo">1224</span> m_listeners.clear();<a name="line.1224"></a> |
| <span class="sourceLineNo">1225</span> }<a name="line.1225"></a> |
| <span class="sourceLineNo">1226</span> }<a name="line.1226"></a> |
| <span class="sourceLineNo">1227</span>}<a name="line.1227"></a> |
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| </pre> |
| </div> |
| </body> |
| </html> |
