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| <pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a> |
| <span class="sourceLineNo">002</span> * Licensed to the Apache Software Foundation (ASF) under one<a name="line.2"></a> |
| <span class="sourceLineNo">003</span> * or more contributor license agreements. See the NOTICE file<a name="line.3"></a> |
| <span class="sourceLineNo">004</span> * distributed with this work for additional information<a name="line.4"></a> |
| <span class="sourceLineNo">005</span> * regarding copyright ownership. The ASF licenses this file<a name="line.5"></a> |
| <span class="sourceLineNo">006</span> * to you under the Apache License, Version 2.0 (the<a name="line.6"></a> |
| <span class="sourceLineNo">007</span> * "License"); you may not use this file except in compliance<a name="line.7"></a> |
| <span class="sourceLineNo">008</span> * with the License. You may obtain a copy of the License at<a name="line.8"></a> |
| <span class="sourceLineNo">009</span> *<a name="line.9"></a> |
| <span class="sourceLineNo">010</span> * http://www.apache.org/licenses/LICENSE-2.0<a name="line.10"></a> |
| <span class="sourceLineNo">011</span> *<a name="line.11"></a> |
| <span class="sourceLineNo">012</span> * Unless required by applicable law or agreed to in writing,<a name="line.12"></a> |
| <span class="sourceLineNo">013</span> * software distributed under the License is distributed on an<a name="line.13"></a> |
| <span class="sourceLineNo">014</span> * "AS IS" BASIS, WITHOUT WARRANTIES OR CONDITIONS OF ANY<a name="line.14"></a> |
| <span class="sourceLineNo">015</span> * KIND, either express or implied. See the License for the<a name="line.15"></a> |
| <span class="sourceLineNo">016</span> * specific language governing permissions and limitations<a name="line.16"></a> |
| <span class="sourceLineNo">017</span> * under the License.<a name="line.17"></a> |
| <span class="sourceLineNo">018</span> */<a name="line.18"></a> |
| <span class="sourceLineNo">019</span><a name="line.19"></a> |
| <span class="sourceLineNo">020</span>package org.apache.felix.ipojo.dependency.impl;<a name="line.20"></a> |
| <span class="sourceLineNo">021</span><a name="line.21"></a> |
| <span class="sourceLineNo">022</span>import org.apache.felix.ipojo.Factory;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.dependency.interceptors.ServiceRankingInterceptor;<a name="line.23"></a> |
| <span class="sourceLineNo">024</span>import org.apache.felix.ipojo.dependency.interceptors.ServiceTrackingInterceptor;<a name="line.24"></a> |
| <span class="sourceLineNo">025</span>import org.apache.felix.ipojo.dependency.interceptors.TransformedServiceReference;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.apache.felix.ipojo.util.*;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span>import org.osgi.framework.Constants;<a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import org.osgi.framework.Filter;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import org.osgi.framework.ServiceReference;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span><a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.*;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>import static org.apache.felix.ipojo.util.DependencyModel.DependencyEventType;<a name="line.33"></a> |
| <span class="sourceLineNo">034</span>import static org.apache.felix.ipojo.util.DependencyModel.DependencyEventType.ARRIVAL;<a name="line.34"></a> |
| <span class="sourceLineNo">035</span>import static org.apache.felix.ipojo.util.DependencyModel.DependencyEventType.DEPARTURE;<a name="line.35"></a> |
| <span class="sourceLineNo">036</span>import static org.apache.felix.ipojo.util.DependencyModel.DependencyEventType.MODIFIED;<a name="line.36"></a> |
| <span class="sourceLineNo">037</span><a name="line.37"></a> |
| <span class="sourceLineNo">038</span>/**<a name="line.38"></a> |
| <span class="sourceLineNo">039</span> * This class is handling the transformations between the base service set and the selected service set.<a name="line.39"></a> |
| <span class="sourceLineNo">040</span> * It handles the matching services and the selected service set.<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * As this class is tied to the dependency model, it reuses the same locks objects.<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> */<a name="line.42"></a> |
| <span class="sourceLineNo">043</span>public class ServiceReferenceManager implements TrackerCustomizer {<a name="line.43"></a> |
| <span class="sourceLineNo">044</span><a name="line.44"></a> |
| <span class="sourceLineNo">045</span> /**<a name="line.45"></a> |
| <span class="sourceLineNo">046</span> * The dependency.<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> private final DependencyModel m_dependency;<a name="line.48"></a> |
| <span class="sourceLineNo">049</span> /**<a name="line.49"></a> |
| <span class="sourceLineNo">050</span> * The list of all matching service references. This list is a<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * subset of tracked references. This set is computed according<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> * to the filter and the {@link DependencyModel#match(ServiceReference)} method.<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> */<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> private final Map<ServiceReference, TransformedServiceReference> m_matchingReferences = new<a name="line.54"></a> |
| <span class="sourceLineNo">055</span> LinkedHashMap<ServiceReference, TransformedServiceReference>();<a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /**<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * The comparator to sort service references.<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> */<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private Comparator<ServiceReference> m_comparator;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * The LDAP filter object selecting service references<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> * from the set of providers providing the required specification.<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> */<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> private Filter m_filter;<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> /**<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> * The list of selected service references.<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> */<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> private List<? extends ServiceReference> m_selectedReferences = new ArrayList<ServiceReference>();<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> /**<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> * The service ranking interceptor.<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> */<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> private ServiceRankingInterceptor m_rankingInterceptor;<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> /**<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> * Service interceptor tracker.<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> */<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> private Tracker m_rankingInterceptorTracker;<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> private Tracker m_trackingInterceptorTracker;<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> /**<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> * The set of tracking interceptors.<a name="line.79"></a> |
| <span class="sourceLineNo">080</span> * TODO this set should be ranking according to the OSGi ranking policy.<a name="line.80"></a> |
| <span class="sourceLineNo">081</span> * The filter is always the last interceptor.<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> */<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> private LinkedList<ServiceTrackingInterceptor> m_trackingInterceptors = new<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> LinkedList<ServiceTrackingInterceptor>();<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> private List<ServiceReference> serviceReferencesList;<a name="line.85"></a> |
| <span class="sourceLineNo">086</span><a name="line.86"></a> |
| <span class="sourceLineNo">087</span> /**<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> * Creates the service reference manager.<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> *<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> * @param dep the dependency<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> * @param filter the filter<a name="line.91"></a> |
| <span class="sourceLineNo">092</span> * @param comparator the comparator<a name="line.92"></a> |
| <span class="sourceLineNo">093</span> */<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> public ServiceReferenceManager(DependencyModel dep, Filter filter, Comparator<ServiceReference> comparator) {<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> m_dependency = dep;<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> m_filter = filter;<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> if (m_filter != null) {<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> m_trackingInterceptors.addLast(new FilterBasedServiceTrackingInterceptor(m_filter));<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> }<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> if (comparator != null) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> m_comparator = comparator;<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> m_rankingInterceptor = new ComparatorBasedServiceRankingInterceptor(comparator);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span> } else {<a name="line.103"></a> |
| <span class="sourceLineNo">104</span> m_rankingInterceptor = new EmptyBasedServiceRankingInterceptor();<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> }<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> }<a name="line.106"></a> |
| <span class="sourceLineNo">107</span><a name="line.107"></a> |
| <span class="sourceLineNo">108</span> public void open() {<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> m_trackingInterceptorTracker = new Tracker(m_dependency.getBundleContext(),<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> ServiceTrackingInterceptor.class.getName(),<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> new TrackerCustomizer() {<a name="line.111"></a> |
| <span class="sourceLineNo">112</span><a name="line.112"></a> |
| <span class="sourceLineNo">113</span> public boolean addingService(ServiceReference reference) {<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> return DependencyProperties.match(reference, m_dependency);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span><a name="line.116"></a> |
| <span class="sourceLineNo">117</span> public void addedService(ServiceReference reference) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> ServiceTrackingInterceptor interceptor = (ServiceTrackingInterceptor) m_trackingInterceptorTracker<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> .getService(reference);<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> if (interceptor != null) {<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> addTrackingInterceptor(interceptor);<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> } else {<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> m_dependency.getComponentInstance().getFactory().getLogger().log(Log.ERROR,<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> "Cannot retrieve the interceptor object from service reference " + reference<a name="line.125"></a> |
| <span class="sourceLineNo">126</span> .getProperty(Constants.SERVICE_ID) + " - " + reference.getProperty<a name="line.126"></a> |
| <span class="sourceLineNo">127</span> (Factory.INSTANCE_NAME_PROPERTY));<a name="line.127"></a> |
| <span class="sourceLineNo">128</span> }<a name="line.128"></a> |
| <span class="sourceLineNo">129</span> }<a name="line.129"></a> |
| <span class="sourceLineNo">130</span><a name="line.130"></a> |
| <span class="sourceLineNo">131</span> public void modifiedService(ServiceReference reference, Object service) {<a name="line.131"></a> |
| <span class="sourceLineNo">132</span> // Not supported yet.<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> // TODO it would be nice to support the modification of the interceptor TARGET property.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> }<a name="line.134"></a> |
| <span class="sourceLineNo">135</span><a name="line.135"></a> |
| <span class="sourceLineNo">136</span> public void removedService(ServiceReference reference, Object service) {<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> if (service != null && m_trackingInterceptors.contains(service)) {<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> removeTrackingInterceptor((ServiceTrackingInterceptor) service);<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> }<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> }<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> m_trackingInterceptorTracker.open();<a name="line.143"></a> |
| <span class="sourceLineNo">144</span><a name="line.144"></a> |
| <span class="sourceLineNo">145</span> // Initialize the service interceptor tracker.<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> m_rankingInterceptorTracker = new Tracker(m_dependency.getBundleContext(), ServiceRankingInterceptor.class.getName(),<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> new TrackerCustomizer() {<a name="line.147"></a> |
| <span class="sourceLineNo">148</span><a name="line.148"></a> |
| <span class="sourceLineNo">149</span> public boolean addingService(ServiceReference reference) {<a name="line.149"></a> |
| <span class="sourceLineNo">150</span> return DependencyProperties.match(reference, m_dependency);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span> }<a name="line.151"></a> |
| <span class="sourceLineNo">152</span><a name="line.152"></a> |
| <span class="sourceLineNo">153</span> public void addedService(ServiceReference reference) {<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> ServiceRankingInterceptor interceptor = (ServiceRankingInterceptor) m_rankingInterceptorTracker<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> .getService(reference);<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> if (interceptor != null) {<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> setRankingInterceptor(interceptor);<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> } else {<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> m_dependency.getComponentInstance().getFactory().getLogger().log(Log.ERROR,<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> "Cannot retrieve the interceptor object from service reference " + reference<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> .getProperty(Constants.SERVICE_ID) + " - " + reference.getProperty<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> (Factory.INSTANCE_NAME_PROPERTY));<a name="line.162"></a> |
| <span class="sourceLineNo">163</span> }<a name="line.163"></a> |
| <span class="sourceLineNo">164</span> }<a name="line.164"></a> |
| <span class="sourceLineNo">165</span><a name="line.165"></a> |
| <span class="sourceLineNo">166</span> public void modifiedService(ServiceReference reference, Object service) {<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> // Not supported yet.<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> // TODO it would be nice to support the modification of the interceptor TARGET property.<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> }<a name="line.169"></a> |
| <span class="sourceLineNo">170</span><a name="line.170"></a> |
| <span class="sourceLineNo">171</span> public void removedService(ServiceReference reference, Object service) {<a name="line.171"></a> |
| <span class="sourceLineNo">172</span> if (service == m_rankingInterceptor) {<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> m_rankingInterceptor.close(m_dependency);<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> // Do we have another one ?<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> ServiceReference anotherReference = m_rankingInterceptorTracker.getServiceReference();<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> if (anotherReference != null) {<a name="line.176"></a> |
| <span class="sourceLineNo">177</span> ServiceRankingInterceptor interceptor = (ServiceRankingInterceptor) m_rankingInterceptorTracker<a name="line.177"></a> |
| <span class="sourceLineNo">178</span> .getService(anotherReference);<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> if (interceptor != null) setRankingInterceptor(interceptor);<a name="line.179"></a> |
| <span class="sourceLineNo">180</span> } else if (m_comparator != null) {<a name="line.180"></a> |
| <span class="sourceLineNo">181</span> // If we have a comparator, we restore the comparator.<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> setComparator(m_comparator);<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> } else {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> // If we have neither comparator nor interceptor use an empty interceptor.<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> setRankingInterceptor(new EmptyBasedServiceRankingInterceptor());<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> }<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> }<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> });<a name="line.189"></a> |
| <span class="sourceLineNo">190</span> m_rankingInterceptorTracker.open();<a name="line.190"></a> |
| <span class="sourceLineNo">191</span> }<a name="line.191"></a> |
| <span class="sourceLineNo">192</span><a name="line.192"></a> |
| <span class="sourceLineNo">193</span> private void addTrackingInterceptor(ServiceTrackingInterceptor interceptor) {<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> // A new interceptor arrives. Insert it at the beginning of the list.<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> ChangeSet changeset;<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> try {<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> m_trackingInterceptors.addFirst(interceptor);<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> interceptor.open(m_dependency);<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> changeset = computeChangesInMatchingServices();<a name="line.200"></a> |
| <span class="sourceLineNo">201</span> } finally {<a name="line.201"></a> |
| <span class="sourceLineNo">202</span> m_dependency.releaseWriteLockIfHeld();<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> }<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> m_dependency.onChange(changeset);<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> }<a name="line.205"></a> |
| <span class="sourceLineNo">206</span><a name="line.206"></a> |
| <span class="sourceLineNo">207</span> private void removeTrackingInterceptor(ServiceTrackingInterceptor interceptor) {<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> ChangeSet changeset;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> try {<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> m_trackingInterceptors.remove(interceptor);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> interceptor.close(m_dependency);<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> changeset = computeChangesInMatchingServices();<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> } finally {<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> m_dependency.releaseWriteLockIfHeld();<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> }<a name="line.216"></a> |
| <span class="sourceLineNo">217</span> m_dependency.onChange(changeset);<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> private ChangeSet computeChangesInMatchingServices() {<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> if (m_dependency.getTracker() == null || m_dependency.getTracker().getServiceReferences() == null) {<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> // Tracker closed, no problem<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> return new ChangeSet(Collections.<ServiceReference>emptyList(),<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> Collections.<ServiceReference>emptyList(),<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> Collections.<ServiceReference>emptyList(),<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> null,<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> null,<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> null,<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> null);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> // The set of interceptor has changed.<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> try {<a name="line.232"></a> |
| <span class="sourceLineNo">233</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.233"></a> |
| <span class="sourceLineNo">234</span> // The tracker is open, we must recheck all services.<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> ServiceReference oldBest = getFirstService();<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> // Recompute the matching services.<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> m_matchingReferences.clear();<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> serviceReferencesList = m_dependency.getTracker().getServiceReferencesList();<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> if (serviceReferencesList != null) {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> for (ServiceReference reference : serviceReferencesList) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> TransformedServiceReference ref = new TransformedServiceReferenceImpl(reference);<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> ref = accept(ref);<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> if (ref != null) {<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> m_matchingReferences.put(reference, ref);<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> }<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> }<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span><a name="line.248"></a> |
| <span class="sourceLineNo">249</span> // We have the new matching set.<a name="line.249"></a> |
| <span class="sourceLineNo">250</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.250"></a> |
| <span class="sourceLineNo">251</span><a name="line.251"></a> |
| <span class="sourceLineNo">252</span> final List<ServiceReference> allServices = getMatchingServices();<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> List<ServiceReference> references;<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> if (allServices.isEmpty()) {<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> references = Collections.emptyList();<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> } else {<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> references = m_rankingInterceptor.getServiceReferences(m_dependency, allServices);<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> }<a name="line.258"></a> |
| <span class="sourceLineNo">259</span><a name="line.259"></a> |
| <span class="sourceLineNo">260</span> RankingResult result = computeDifferences(beforeRanking, references);<a name="line.260"></a> |
| <span class="sourceLineNo">261</span> m_selectedReferences = result.selected;<a name="line.261"></a> |
| <span class="sourceLineNo">262</span><a name="line.262"></a> |
| <span class="sourceLineNo">263</span> ServiceReference newFirst = getFirstService();<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> ServiceReference modified = null;<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> if (ServiceReferenceUtils.haveSameServiceId(oldBest, newFirst) && ServiceReferenceUtils<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> .haveSameProperties(oldBest, newFirst)) {<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> modified = newFirst;<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> }<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> return new ChangeSet(getSelectedServices(), result.departures, result.arrivals, oldBest, getFirstService(),<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> null, modified);<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> } finally {<a name="line.271"></a> |
| <span class="sourceLineNo">272</span> m_dependency.releaseWriteLockIfHeld();<a name="line.272"></a> |
| <span class="sourceLineNo">273</span> }<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> }<a name="line.274"></a> |
| <span class="sourceLineNo">275</span><a name="line.275"></a> |
| <span class="sourceLineNo">276</span> public List<ServiceReference> getMatchingServices() {<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> try {<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> return new ArrayList<ServiceReference>(m_matchingReferences.values());<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> } finally {<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> m_dependency.releaseReadLockIfHeld();<a name="line.281"></a> |
| <span class="sourceLineNo">282</span> }<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> public List<ServiceReference> getSelectedServices() {<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> try {<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> return new ArrayList<ServiceReference>(m_selectedReferences);<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> } finally {<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> m_dependency.releaseReadLockIfHeld();<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> }<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> }<a name="line.292"></a> |
| <span class="sourceLineNo">293</span><a name="line.293"></a> |
| <span class="sourceLineNo">294</span> public ServiceReference getFirstService() {<a name="line.294"></a> |
| <span class="sourceLineNo">295</span> try {<a name="line.295"></a> |
| <span class="sourceLineNo">296</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> if (m_selectedReferences.isEmpty()) {<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> return null;<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> }<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> return m_selectedReferences.get(0);<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> } finally {<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> m_dependency.releaseReadLockIfHeld();<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> }<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> }<a name="line.304"></a> |
| <span class="sourceLineNo">305</span><a name="line.305"></a> |
| <span class="sourceLineNo">306</span> public boolean contains(ServiceReference ref) {<a name="line.306"></a> |
| <span class="sourceLineNo">307</span> try {<a name="line.307"></a> |
| <span class="sourceLineNo">308</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> return m_selectedReferences.contains(ref);<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> } finally {<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> m_dependency.releaseReadLockIfHeld();<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> }<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> }<a name="line.313"></a> |
| <span class="sourceLineNo">314</span><a name="line.314"></a> |
| <span class="sourceLineNo">315</span> public void reset() {<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> try {<a name="line.316"></a> |
| <span class="sourceLineNo">317</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.317"></a> |
| <span class="sourceLineNo">318</span> m_rankingInterceptor.close(m_dependency);<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> for (ServiceTrackingInterceptor interceptor : m_trackingInterceptors) {<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> interceptor.close(m_dependency);<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> }<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> m_trackingInterceptors.clear();<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> m_matchingReferences.clear();<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> m_selectedReferences = new ArrayList<TransformedServiceReference>();<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> } finally {<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> m_dependency.releaseWriteLockIfHeld();<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> }<a name="line.327"></a> |
| <span class="sourceLineNo">328</span><a name="line.328"></a> |
| <span class="sourceLineNo">329</span> }<a name="line.329"></a> |
| <span class="sourceLineNo">330</span><a name="line.330"></a> |
| <span class="sourceLineNo">331</span> public boolean addingService(ServiceReference reference) {<a name="line.331"></a> |
| <span class="sourceLineNo">332</span> // We accept all service references except if we are frozen or broken. In these case, just ignore everything.<a name="line.332"></a> |
| <span class="sourceLineNo">333</span><a name="line.333"></a> |
| <span class="sourceLineNo">334</span> // We are doing two tests, we must get the read lock<a name="line.334"></a> |
| <span class="sourceLineNo">335</span> try {<a name="line.335"></a> |
| <span class="sourceLineNo">336</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.336"></a> |
| <span class="sourceLineNo">337</span> return !(m_dependency.getState() == DependencyModel.BROKEN || m_dependency.isFrozen());<a name="line.337"></a> |
| <span class="sourceLineNo">338</span> } finally {<a name="line.338"></a> |
| <span class="sourceLineNo">339</span> m_dependency.releaseReadLockIfHeld();<a name="line.339"></a> |
| <span class="sourceLineNo">340</span> }<a name="line.340"></a> |
| <span class="sourceLineNo">341</span> }<a name="line.341"></a> |
| <span class="sourceLineNo">342</span><a name="line.342"></a> |
| <span class="sourceLineNo">343</span> /**<a name="line.343"></a> |
| <span class="sourceLineNo">344</span> * Checks if the given reference is accepted.<a name="line.344"></a> |
| <span class="sourceLineNo">345</span> * This method is called when holding the write lock on the dependency.<a name="line.345"></a> |
| <span class="sourceLineNo">346</span> *<a name="line.346"></a> |
| <span class="sourceLineNo">347</span> * @param reference the reference<a name="line.347"></a> |
| <span class="sourceLineNo">348</span> * @param <S><a name="line.348"></a> |
| <span class="sourceLineNo">349</span> * @return the transformed reference, null if rejected<a name="line.349"></a> |
| <span class="sourceLineNo">350</span> */<a name="line.350"></a> |
| <span class="sourceLineNo">351</span> private <S> TransformedServiceReference<S> accept(TransformedServiceReference<S> reference) {<a name="line.351"></a> |
| <span class="sourceLineNo">352</span> TransformedServiceReference<S> accumulator = reference;<a name="line.352"></a> |
| <span class="sourceLineNo">353</span> for (ServiceTrackingInterceptor interceptor : m_trackingInterceptors) {<a name="line.353"></a> |
| <span class="sourceLineNo">354</span> TransformedServiceReference<S> accepted = interceptor.accept(m_dependency, m_dependency.getBundleContext(), reference);<a name="line.354"></a> |
| <span class="sourceLineNo">355</span> if (accepted != null) {<a name="line.355"></a> |
| <span class="sourceLineNo">356</span> accumulator = accepted;<a name="line.356"></a> |
| <span class="sourceLineNo">357</span> } else {<a name="line.357"></a> |
| <span class="sourceLineNo">358</span> // refused by an interceptor<a name="line.358"></a> |
| <span class="sourceLineNo">359</span> m_dependency.getComponentInstance().getFactory().getLogger().log(Log.INFO,<a name="line.359"></a> |
| <span class="sourceLineNo">360</span> "The service reference " + reference.getProperty(Constants.SERVICE_ID) + " was rejected by " +<a name="line.360"></a> |
| <span class="sourceLineNo">361</span> "interceptor " + interceptor);<a name="line.361"></a> |
| <span class="sourceLineNo">362</span> return null;<a name="line.362"></a> |
| <span class="sourceLineNo">363</span> }<a name="line.363"></a> |
| <span class="sourceLineNo">364</span> }<a name="line.364"></a> |
| <span class="sourceLineNo">365</span><a name="line.365"></a> |
| <span class="sourceLineNo">366</span> return accumulator;<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> public void addedService(ServiceReference reference) {<a name="line.369"></a> |
| <span class="sourceLineNo">370</span> // A service was added to the tracker.<a name="line.370"></a> |
| <span class="sourceLineNo">371</span><a name="line.371"></a> |
| <span class="sourceLineNo">372</span> // First, check is the tracking interceptors are accepting it.<a name="line.372"></a> |
| <span class="sourceLineNo">373</span> // The transformed reference is creates and check outside of the protected region.<a name="line.373"></a> |
| <span class="sourceLineNo">374</span> TransformedServiceReference ref = new TransformedServiceReferenceImpl(reference);<a name="line.374"></a> |
| <span class="sourceLineNo">375</span><a name="line.375"></a> |
| <span class="sourceLineNo">376</span> boolean match;<a name="line.376"></a> |
| <span class="sourceLineNo">377</span> try {<a name="line.377"></a> |
| <span class="sourceLineNo">378</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.378"></a> |
| <span class="sourceLineNo">379</span> ref = accept(ref);<a name="line.379"></a> |
| <span class="sourceLineNo">380</span> if (ref != null) {<a name="line.380"></a> |
| <span class="sourceLineNo">381</span> m_matchingReferences.put(reference, ref);<a name="line.381"></a> |
| <span class="sourceLineNo">382</span> }<a name="line.382"></a> |
| <span class="sourceLineNo">383</span> match = ref != null;<a name="line.383"></a> |
| <span class="sourceLineNo">384</span> } finally {<a name="line.384"></a> |
| <span class="sourceLineNo">385</span> m_dependency.releaseWriteLockIfHeld();<a name="line.385"></a> |
| <span class="sourceLineNo">386</span> }<a name="line.386"></a> |
| <span class="sourceLineNo">387</span><a name="line.387"></a> |
| <span class="sourceLineNo">388</span> if (match) {<a name="line.388"></a> |
| <span class="sourceLineNo">389</span> // Callback invoked outside of locks.<a name="line.389"></a> |
| <span class="sourceLineNo">390</span> // The called method is taking the write lock anyway.<a name="line.390"></a> |
| <span class="sourceLineNo">391</span> onNewMatchingService(ref);<a name="line.391"></a> |
| <span class="sourceLineNo">392</span> m_dependency.notifyListeners(ARRIVAL, ref, null);<a name="line.392"></a> |
| <span class="sourceLineNo">393</span> }<a name="line.393"></a> |
| <span class="sourceLineNo">394</span> }<a name="line.394"></a> |
| <span class="sourceLineNo">395</span><a name="line.395"></a> |
| <span class="sourceLineNo">396</span> private void onNewMatchingService(TransformedServiceReference reference) {<a name="line.396"></a> |
| <span class="sourceLineNo">397</span> ServiceReference oldFirst;<a name="line.397"></a> |
| <span class="sourceLineNo">398</span> RankingResult result;<a name="line.398"></a> |
| <span class="sourceLineNo">399</span> try {<a name="line.399"></a> |
| <span class="sourceLineNo">400</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.400"></a> |
| <span class="sourceLineNo">401</span> // We store the currently 'first' service reference.<a name="line.401"></a> |
| <span class="sourceLineNo">402</span> oldFirst = getFirstService();<a name="line.402"></a> |
| <span class="sourceLineNo">403</span><a name="line.403"></a> |
| <span class="sourceLineNo">404</span> // We apply our ranking strategy.<a name="line.404"></a> |
| <span class="sourceLineNo">405</span> result = applyRankingOnArrival(reference);<a name="line.405"></a> |
| <span class="sourceLineNo">406</span> // Set the selected services.<a name="line.406"></a> |
| <span class="sourceLineNo">407</span> m_selectedReferences = result.selected;<a name="line.407"></a> |
| <span class="sourceLineNo">408</span> } finally {<a name="line.408"></a> |
| <span class="sourceLineNo">409</span> m_dependency.releaseWriteLockIfHeld();<a name="line.409"></a> |
| <span class="sourceLineNo">410</span> }<a name="line.410"></a> |
| <span class="sourceLineNo">411</span> // Fire the event (outside from the synchronized region)<a name="line.411"></a> |
| <span class="sourceLineNo">412</span> fireUpdate(getSelectedServices(), result.departures, result.arrivals, oldFirst,<a name="line.412"></a> |
| <span class="sourceLineNo">413</span> getFirstService(), null, null);<a name="line.413"></a> |
| <span class="sourceLineNo">414</span> }<a name="line.414"></a> |
| <span class="sourceLineNo">415</span><a name="line.415"></a> |
| <span class="sourceLineNo">416</span> private void onModificationOfAMatchingService(TransformedServiceReference reference, Object service) {<a name="line.416"></a> |
| <span class="sourceLineNo">417</span> ServiceReference oldFirst;<a name="line.417"></a> |
| <span class="sourceLineNo">418</span> RankingResult result;<a name="line.418"></a> |
| <span class="sourceLineNo">419</span> try {<a name="line.419"></a> |
| <span class="sourceLineNo">420</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.420"></a> |
| <span class="sourceLineNo">421</span> // We store the currently 'first' service reference.<a name="line.421"></a> |
| <span class="sourceLineNo">422</span> oldFirst = getFirstService();<a name="line.422"></a> |
| <span class="sourceLineNo">423</span><a name="line.423"></a> |
| <span class="sourceLineNo">424</span> // We apply our ranking strategy.<a name="line.424"></a> |
| <span class="sourceLineNo">425</span> result = applyRankingOnModification(reference);<a name="line.425"></a> |
| <span class="sourceLineNo">426</span> // Set the selected services.<a name="line.426"></a> |
| <span class="sourceLineNo">427</span> m_selectedReferences = result.selected;<a name="line.427"></a> |
| <span class="sourceLineNo">428</span> } finally {<a name="line.428"></a> |
| <span class="sourceLineNo">429</span> m_dependency.releaseWriteLockIfHeld();<a name="line.429"></a> |
| <span class="sourceLineNo">430</span> }<a name="line.430"></a> |
| <span class="sourceLineNo">431</span> // Fire the event (outside from the synchronized region)<a name="line.431"></a> |
| <span class="sourceLineNo">432</span> fireUpdate(getSelectedServices(), result.departures, result.arrivals, oldFirst,<a name="line.432"></a> |
| <span class="sourceLineNo">433</span> getFirstService(), service, reference);<a name="line.433"></a> |
| <span class="sourceLineNo">434</span> }<a name="line.434"></a> |
| <span class="sourceLineNo">435</span><a name="line.435"></a> |
| <span class="sourceLineNo">436</span> private RankingResult applyRankingOnModification(ServiceReference reference) {<a name="line.436"></a> |
| <span class="sourceLineNo">437</span> // TODO we are holding the lock here.<a name="line.437"></a> |
| <span class="sourceLineNo">438</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.438"></a> |
| <span class="sourceLineNo">439</span> List<ServiceReference> references = m_rankingInterceptor.onServiceModified(m_dependency, getMatchingServices(),<a name="line.439"></a> |
| <span class="sourceLineNo">440</span> reference);<a name="line.440"></a> |
| <span class="sourceLineNo">441</span> return computeDifferences(beforeRanking, references);<a name="line.441"></a> |
| <span class="sourceLineNo">442</span> }<a name="line.442"></a> |
| <span class="sourceLineNo">443</span><a name="line.443"></a> |
| <span class="sourceLineNo">444</span> private void fireUpdate(List<ServiceReference> selectedServices, List<ServiceReference> departures,<a name="line.444"></a> |
| <span class="sourceLineNo">445</span> List<ServiceReference> arrivals, ServiceReference oldFirst,<a name="line.445"></a> |
| <span class="sourceLineNo">446</span> ServiceReference firstService, Object service, ServiceReference modified) {<a name="line.446"></a> |
| <span class="sourceLineNo">447</span> ChangeSet set = new ChangeSet(selectedServices, departures, arrivals, oldFirst, firstService, service, modified);<a name="line.447"></a> |
| <span class="sourceLineNo">448</span> m_dependency.onChange(set);<a name="line.448"></a> |
| <span class="sourceLineNo">449</span> }<a name="line.449"></a> |
| <span class="sourceLineNo">450</span><a name="line.450"></a> |
| <span class="sourceLineNo">451</span> private RankingResult applyRankingOnArrival(ServiceReference ref) {<a name="line.451"></a> |
| <span class="sourceLineNo">452</span> // TODO we are holding the lock here.<a name="line.452"></a> |
| <span class="sourceLineNo">453</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.453"></a> |
| <span class="sourceLineNo">454</span> List<ServiceReference> references = m_rankingInterceptor.onServiceArrival(m_dependency, getMatchingServices(),<a name="line.454"></a> |
| <span class="sourceLineNo">455</span> ref);<a name="line.455"></a> |
| <span class="sourceLineNo">456</span> // compute the differences<a name="line.456"></a> |
| <span class="sourceLineNo">457</span> return computeDifferences(beforeRanking, references);<a name="line.457"></a> |
| <span class="sourceLineNo">458</span><a name="line.458"></a> |
| <span class="sourceLineNo">459</span> }<a name="line.459"></a> |
| <span class="sourceLineNo">460</span><a name="line.460"></a> |
| <span class="sourceLineNo">461</span> private RankingResult applyRankingOnDeparture(ServiceReference ref) {<a name="line.461"></a> |
| <span class="sourceLineNo">462</span> // TODO we are holding the lock here.<a name="line.462"></a> |
| <span class="sourceLineNo">463</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.463"></a> |
| <span class="sourceLineNo">464</span> List<ServiceReference> references = m_rankingInterceptor.onServiceDeparture(m_dependency, getMatchingServices(),<a name="line.464"></a> |
| <span class="sourceLineNo">465</span> ref);<a name="line.465"></a> |
| <span class="sourceLineNo">466</span> return computeDifferences(beforeRanking, references);<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> private RankingResult computeDifferences(List<ServiceReference> beforeRanking, List<ServiceReference> ranked) {<a name="line.469"></a> |
| <span class="sourceLineNo">470</span> // compute the differences<a name="line.470"></a> |
| <span class="sourceLineNo">471</span> List<ServiceReference> departures = new ArrayList<ServiceReference>();<a name="line.471"></a> |
| <span class="sourceLineNo">472</span> List<ServiceReference> arrivals = new ArrayList<ServiceReference>();<a name="line.472"></a> |
| <span class="sourceLineNo">473</span> // All references that are no more in the set are considered as leaving services.<a name="line.473"></a> |
| <span class="sourceLineNo">474</span> for (ServiceReference old : beforeRanking) {<a name="line.474"></a> |
| <span class="sourceLineNo">475</span> if (!ServiceReferenceUtils.containsReferenceById(ranked, old)) {<a name="line.475"></a> |
| <span class="sourceLineNo">476</span> departures.add(old);<a name="line.476"></a> |
| <span class="sourceLineNo">477</span> }<a name="line.477"></a> |
| <span class="sourceLineNo">478</span> }<a name="line.478"></a> |
| <span class="sourceLineNo">479</span> // All references that are in `references` but not in `beforeRanking` are new services<a name="line.479"></a> |
| <span class="sourceLineNo">480</span> for (ServiceReference newRef : ranked) {<a name="line.480"></a> |
| <span class="sourceLineNo">481</span> if (!ServiceReferenceUtils.containsReferenceById(beforeRanking, newRef)) {<a name="line.481"></a> |
| <span class="sourceLineNo">482</span> arrivals.add(newRef);<a name="line.482"></a> |
| <span class="sourceLineNo">483</span> }<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> return new RankingResult(departures, arrivals, ranked);<a name="line.486"></a> |
| <span class="sourceLineNo">487</span> }<a name="line.487"></a> |
| <span class="sourceLineNo">488</span><a name="line.488"></a> |
| <span class="sourceLineNo">489</span> public void modifiedService(ServiceReference reference, Object service) {<a name="line.489"></a> |
| <span class="sourceLineNo">490</span> // We are handling a modified event, we have three case to handle<a name="line.490"></a> |
| <span class="sourceLineNo">491</span> // 1) the service was matching and does not match anymore -> it's a departure.<a name="line.491"></a> |
| <span class="sourceLineNo">492</span> // 2) the service was not matching and matches -> it's an arrival<a name="line.492"></a> |
| <span class="sourceLineNo">493</span> // 3) the service was matching and still matches -> it's a modification.<a name="line.493"></a> |
| <span class="sourceLineNo">494</span><a name="line.494"></a> |
| <span class="sourceLineNo">495</span> // The dependency event to send<a name="line.495"></a> |
| <span class="sourceLineNo">496</span> DependencyEventType eventType = null;<a name="line.496"></a> |
| <span class="sourceLineNo">497</span> ServiceReference<?> eventRef = null;<a name="line.497"></a> |
| <span class="sourceLineNo">498</span><a name="line.498"></a> |
| <span class="sourceLineNo">499</span> try {<a name="line.499"></a> |
| <span class="sourceLineNo">500</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.500"></a> |
| <span class="sourceLineNo">501</span><a name="line.501"></a> |
| <span class="sourceLineNo">502</span> if (m_matchingReferences.containsKey(reference)) {<a name="line.502"></a> |
| <span class="sourceLineNo">503</span> // do we still accept the reference<a name="line.503"></a> |
| <span class="sourceLineNo">504</span> TransformedServiceReference initial = m_matchingReferences.get(reference);<a name="line.504"></a> |
| <span class="sourceLineNo">505</span> TransformedServiceReference accepted = new TransformedServiceReferenceImpl(reference);<a name="line.505"></a> |
| <span class="sourceLineNo">506</span> accepted = accept(accepted);<a name="line.506"></a> |
| <span class="sourceLineNo">507</span> if (accepted == null) {<a name="line.507"></a> |
| <span class="sourceLineNo">508</span> // case 1<a name="line.508"></a> |
| <span class="sourceLineNo">509</span> m_matchingReferences.remove(reference);<a name="line.509"></a> |
| <span class="sourceLineNo">510</span> onDepartureOfAMatchingService(initial, service);<a name="line.510"></a> |
| <span class="sourceLineNo">511</span> eventType = DEPARTURE;<a name="line.511"></a> |
| <span class="sourceLineNo">512</span> eventRef = initial;<a name="line.512"></a> |
| <span class="sourceLineNo">513</span> } else {<a name="line.513"></a> |
| <span class="sourceLineNo">514</span> // Do we have a real change<a name="line.514"></a> |
| <span class="sourceLineNo">515</span> if (!ServiceReferenceUtils.haveSameProperties(initial, accepted)) {<a name="line.515"></a> |
| <span class="sourceLineNo">516</span> // case 3<a name="line.516"></a> |
| <span class="sourceLineNo">517</span> m_matchingReferences.put(reference, accepted);<a name="line.517"></a> |
| <span class="sourceLineNo">518</span> onModificationOfAMatchingService(accepted, service);<a name="line.518"></a> |
| <span class="sourceLineNo">519</span> eventType = MODIFIED;<a name="line.519"></a> |
| <span class="sourceLineNo">520</span> eventRef = accepted;<a name="line.520"></a> |
| <span class="sourceLineNo">521</span> }<a name="line.521"></a> |
| <span class="sourceLineNo">522</span> }<a name="line.522"></a> |
| <span class="sourceLineNo">523</span> } else {<a name="line.523"></a> |
| <span class="sourceLineNo">524</span> // Base does not contain the service, let's try to add it.<a name="line.524"></a> |
| <span class="sourceLineNo">525</span> TransformedServiceReference transformed = new TransformedServiceReferenceImpl(reference);<a name="line.525"></a> |
| <span class="sourceLineNo">526</span> transformed = accept(transformed);<a name="line.526"></a> |
| <span class="sourceLineNo">527</span> if (transformed != null) {<a name="line.527"></a> |
| <span class="sourceLineNo">528</span> // case 2<a name="line.528"></a> |
| <span class="sourceLineNo">529</span> m_matchingReferences.put(reference, transformed);<a name="line.529"></a> |
| <span class="sourceLineNo">530</span> onNewMatchingService(transformed);<a name="line.530"></a> |
| <span class="sourceLineNo">531</span> eventType = ARRIVAL;<a name="line.531"></a> |
| <span class="sourceLineNo">532</span> eventRef = transformed;<a name="line.532"></a> |
| <span class="sourceLineNo">533</span> }<a name="line.533"></a> |
| <span class="sourceLineNo">534</span> }<a name="line.534"></a> |
| <span class="sourceLineNo">535</span> } finally {<a name="line.535"></a> |
| <span class="sourceLineNo">536</span> m_dependency.releaseWriteLockIfHeld();<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> if (eventType != null) {<a name="line.539"></a> |
| <span class="sourceLineNo">540</span> m_dependency.notifyListeners(eventType, eventRef, service);<a name="line.540"></a> |
| <span class="sourceLineNo">541</span> }<a name="line.541"></a> |
| <span class="sourceLineNo">542</span> }<a name="line.542"></a> |
| <span class="sourceLineNo">543</span><a name="line.543"></a> |
| <span class="sourceLineNo">544</span> public void onDepartureOfAMatchingService(TransformedServiceReference reference, Object service) {<a name="line.544"></a> |
| <span class="sourceLineNo">545</span> ServiceReference oldFirst;<a name="line.545"></a> |
| <span class="sourceLineNo">546</span> RankingResult result = null;<a name="line.546"></a> |
| <span class="sourceLineNo">547</span> try {<a name="line.547"></a> |
| <span class="sourceLineNo">548</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.548"></a> |
| <span class="sourceLineNo">549</span> // We store the currently 'first' service reference.<a name="line.549"></a> |
| <span class="sourceLineNo">550</span> oldFirst = getFirstService();<a name="line.550"></a> |
| <span class="sourceLineNo">551</span> // We apply our ranking strategy.<a name="line.551"></a> |
| <span class="sourceLineNo">552</span> result = applyRankingOnDeparture(reference);<a name="line.552"></a> |
| <span class="sourceLineNo">553</span> // Set the selected services.<a name="line.553"></a> |
| <span class="sourceLineNo">554</span> m_selectedReferences = result.selected;<a name="line.554"></a> |
| <span class="sourceLineNo">555</span> } finally {<a name="line.555"></a> |
| <span class="sourceLineNo">556</span> m_dependency.releaseWriteLockIfHeld();<a name="line.556"></a> |
| <span class="sourceLineNo">557</span> }<a name="line.557"></a> |
| <span class="sourceLineNo">558</span> // Fire the event (outside from the synchronized region)<a name="line.558"></a> |
| <span class="sourceLineNo">559</span> fireUpdate(getSelectedServices(), result.departures, result.arrivals, oldFirst,<a name="line.559"></a> |
| <span class="sourceLineNo">560</span> getFirstService(), service, null);<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> public void removedService(ServiceReference reference, Object service) {<a name="line.563"></a> |
| <span class="sourceLineNo">564</span> // A service is leaving<a name="line.564"></a> |
| <span class="sourceLineNo">565</span> // 1 - the service was in the matching set => real departure<a name="line.565"></a> |
| <span class="sourceLineNo">566</span> // 2 - the service was not in the matching set => nothing do do.<a name="line.566"></a> |
| <span class="sourceLineNo">567</span><a name="line.567"></a> |
| <span class="sourceLineNo">568</span> TransformedServiceReference initial = null;<a name="line.568"></a> |
| <span class="sourceLineNo">569</span> try {<a name="line.569"></a> |
| <span class="sourceLineNo">570</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.570"></a> |
| <span class="sourceLineNo">571</span> initial = m_matchingReferences.remove(reference);<a name="line.571"></a> |
| <span class="sourceLineNo">572</span> if (initial != null) {<a name="line.572"></a> |
| <span class="sourceLineNo">573</span> // Case 1<a name="line.573"></a> |
| <span class="sourceLineNo">574</span> onDepartureOfAMatchingService(initial, service);<a name="line.574"></a> |
| <span class="sourceLineNo">575</span> }<a name="line.575"></a> |
| <span class="sourceLineNo">576</span> // else case 2.<a name="line.576"></a> |
| <span class="sourceLineNo">577</span> } finally {<a name="line.577"></a> |
| <span class="sourceLineNo">578</span> m_dependency.releaseWriteLockIfHeld();<a name="line.578"></a> |
| <span class="sourceLineNo">579</span> }<a name="line.579"></a> |
| <span class="sourceLineNo">580</span><a name="line.580"></a> |
| <span class="sourceLineNo">581</span> // Call the listeners outside the locked region.<a name="line.581"></a> |
| <span class="sourceLineNo">582</span> if (initial != null) {<a name="line.582"></a> |
| <span class="sourceLineNo">583</span> m_dependency.notifyListeners(DEPARTURE, initial, service);<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><a name="line.587"></a> |
| <span class="sourceLineNo">588</span> /**<a name="line.588"></a> |
| <span class="sourceLineNo">589</span> * A new filter is set.<a name="line.589"></a> |
| <span class="sourceLineNo">590</span> * We have to recompute the set of matching services.<a name="line.590"></a> |
| <span class="sourceLineNo">591</span> *<a name="line.591"></a> |
| <span class="sourceLineNo">592</span> * @param filter the new filter<a name="line.592"></a> |
| <span class="sourceLineNo">593</span> * @param tracker the tracker<a name="line.593"></a> |
| <span class="sourceLineNo">594</span> */<a name="line.594"></a> |
| <span class="sourceLineNo">595</span> public ChangeSet setFilter(Filter filter, Tracker tracker) {<a name="line.595"></a> |
| <span class="sourceLineNo">596</span> try {<a name="line.596"></a> |
| <span class="sourceLineNo">597</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.597"></a> |
| <span class="sourceLineNo">598</span> m_filter = filter;<a name="line.598"></a> |
| <span class="sourceLineNo">599</span><a name="line.599"></a> |
| <span class="sourceLineNo">600</span> if (!m_trackingInterceptors.isEmpty()) {<a name="line.600"></a> |
| <span class="sourceLineNo">601</span> ServiceTrackingInterceptor interceptor = m_trackingInterceptors.getLast();<a name="line.601"></a> |
| <span class="sourceLineNo">602</span> if (interceptor != null && interceptor instanceof FilterBasedServiceTrackingInterceptor) {<a name="line.602"></a> |
| <span class="sourceLineNo">603</span> // Remove it first.<a name="line.603"></a> |
| <span class="sourceLineNo">604</span> m_trackingInterceptors.removeLast();<a name="line.604"></a> |
| <span class="sourceLineNo">605</span> }<a name="line.605"></a> |
| <span class="sourceLineNo">606</span> }<a name="line.606"></a> |
| <span class="sourceLineNo">607</span><a name="line.607"></a> |
| <span class="sourceLineNo">608</span> if (m_filter != null) {<a name="line.608"></a> |
| <span class="sourceLineNo">609</span> // Add the new one.<a name="line.609"></a> |
| <span class="sourceLineNo">610</span> ServiceTrackingInterceptor newInterceptor = new FilterBasedServiceTrackingInterceptor(m_filter);<a name="line.610"></a> |
| <span class="sourceLineNo">611</span> m_trackingInterceptors.addLast(newInterceptor);<a name="line.611"></a> |
| <span class="sourceLineNo">612</span> }<a name="line.612"></a> |
| <span class="sourceLineNo">613</span><a name="line.613"></a> |
| <span class="sourceLineNo">614</span> if (tracker == null) {<a name="line.614"></a> |
| <span class="sourceLineNo">615</span> // Tracker closed, no problem<a name="line.615"></a> |
| <span class="sourceLineNo">616</span> return new ChangeSet(Collections.<ServiceReference>emptyList(),<a name="line.616"></a> |
| <span class="sourceLineNo">617</span> Collections.<ServiceReference>emptyList(),<a name="line.617"></a> |
| <span class="sourceLineNo">618</span> Collections.<ServiceReference>emptyList(),<a name="line.618"></a> |
| <span class="sourceLineNo">619</span> null,<a name="line.619"></a> |
| <span class="sourceLineNo">620</span> null,<a name="line.620"></a> |
| <span class="sourceLineNo">621</span> null,<a name="line.621"></a> |
| <span class="sourceLineNo">622</span> null);<a name="line.622"></a> |
| <span class="sourceLineNo">623</span> } else {<a name="line.623"></a> |
| <span class="sourceLineNo">624</span> // The tracker is open, we must recheck all services.<a name="line.624"></a> |
| <span class="sourceLineNo">625</span> ServiceReference oldBest = getFirstService();<a name="line.625"></a> |
| <span class="sourceLineNo">626</span><a name="line.626"></a> |
| <span class="sourceLineNo">627</span> // Recompute the matching services.<a name="line.627"></a> |
| <span class="sourceLineNo">628</span> m_matchingReferences.clear();<a name="line.628"></a> |
| <span class="sourceLineNo">629</span> final List<ServiceReference> serviceReferencesList = tracker.getServiceReferencesList();<a name="line.629"></a> |
| <span class="sourceLineNo">630</span> if (serviceReferencesList != null) {<a name="line.630"></a> |
| <span class="sourceLineNo">631</span> for (ServiceReference reference : serviceReferencesList) {<a name="line.631"></a> |
| <span class="sourceLineNo">632</span> TransformedServiceReference ref = new TransformedServiceReferenceImpl(reference);<a name="line.632"></a> |
| <span class="sourceLineNo">633</span> ref = accept(ref);<a name="line.633"></a> |
| <span class="sourceLineNo">634</span> if (ref != null) {<a name="line.634"></a> |
| <span class="sourceLineNo">635</span> m_matchingReferences.put(reference, ref);<a name="line.635"></a> |
| <span class="sourceLineNo">636</span> }<a name="line.636"></a> |
| <span class="sourceLineNo">637</span> }<a name="line.637"></a> |
| <span class="sourceLineNo">638</span> }<a name="line.638"></a> |
| <span class="sourceLineNo">639</span><a name="line.639"></a> |
| <span class="sourceLineNo">640</span> // We have the new matching set.<a name="line.640"></a> |
| <span class="sourceLineNo">641</span><a name="line.641"></a> |
| <span class="sourceLineNo">642</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.642"></a> |
| <span class="sourceLineNo">643</span><a name="line.643"></a> |
| <span class="sourceLineNo">644</span> final List<ServiceReference> allServices = getMatchingServices();<a name="line.644"></a> |
| <span class="sourceLineNo">645</span> List<ServiceReference> references;<a name="line.645"></a> |
| <span class="sourceLineNo">646</span> if (allServices.isEmpty()) {<a name="line.646"></a> |
| <span class="sourceLineNo">647</span> references = Collections.emptyList();<a name="line.647"></a> |
| <span class="sourceLineNo">648</span> } else {<a name="line.648"></a> |
| <span class="sourceLineNo">649</span> references = m_rankingInterceptor.getServiceReferences(m_dependency, allServices);<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> RankingResult result = computeDifferences(beforeRanking, references);<a name="line.652"></a> |
| <span class="sourceLineNo">653</span> m_selectedReferences = result.selected;<a name="line.653"></a> |
| <span class="sourceLineNo">654</span> return new ChangeSet(getSelectedServices(), result.departures, result.arrivals, oldBest, getFirstService(),<a name="line.654"></a> |
| <span class="sourceLineNo">655</span> null, null);<a name="line.655"></a> |
| <span class="sourceLineNo">656</span> }<a name="line.656"></a> |
| <span class="sourceLineNo">657</span> } finally {<a name="line.657"></a> |
| <span class="sourceLineNo">658</span> m_dependency.releaseWriteLockIfHeld();<a name="line.658"></a> |
| <span class="sourceLineNo">659</span> }<a name="line.659"></a> |
| <span class="sourceLineNo">660</span> }<a name="line.660"></a> |
| <span class="sourceLineNo">661</span><a name="line.661"></a> |
| <span class="sourceLineNo">662</span> public boolean isEmpty() {<a name="line.662"></a> |
| <span class="sourceLineNo">663</span> try {<a name="line.663"></a> |
| <span class="sourceLineNo">664</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.664"></a> |
| <span class="sourceLineNo">665</span> return m_selectedReferences.isEmpty();<a name="line.665"></a> |
| <span class="sourceLineNo">666</span> } finally {<a name="line.666"></a> |
| <span class="sourceLineNo">667</span> m_dependency.releaseReadLockIfHeld();<a name="line.667"></a> |
| <span class="sourceLineNo">668</span> }<a name="line.668"></a> |
| <span class="sourceLineNo">669</span> }<a name="line.669"></a> |
| <span class="sourceLineNo">670</span><a name="line.670"></a> |
| <span class="sourceLineNo">671</span> public Comparator<ServiceReference> getComparator() {<a name="line.671"></a> |
| <span class="sourceLineNo">672</span> try {<a name="line.672"></a> |
| <span class="sourceLineNo">673</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.673"></a> |
| <span class="sourceLineNo">674</span> return m_comparator;<a name="line.674"></a> |
| <span class="sourceLineNo">675</span> } finally {<a name="line.675"></a> |
| <span class="sourceLineNo">676</span> m_dependency.releaseReadLockIfHeld();<a name="line.676"></a> |
| <span class="sourceLineNo">677</span> }<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> public void setComparator(Comparator<ServiceReference> cmp) {<a name="line.680"></a> |
| <span class="sourceLineNo">681</span> try {<a name="line.681"></a> |
| <span class="sourceLineNo">682</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.682"></a> |
| <span class="sourceLineNo">683</span> if (cmp == null) {<a name="line.683"></a> |
| <span class="sourceLineNo">684</span> m_comparator = new ServiceReferenceRankingComparator();<a name="line.684"></a> |
| <span class="sourceLineNo">685</span> } else {<a name="line.685"></a> |
| <span class="sourceLineNo">686</span> m_comparator = cmp;<a name="line.686"></a> |
| <span class="sourceLineNo">687</span> }<a name="line.687"></a> |
| <span class="sourceLineNo">688</span> // Be aware that this method will release the lock to call the dependency callback.<a name="line.688"></a> |
| <span class="sourceLineNo">689</span> setRankingInterceptor(new ComparatorBasedServiceRankingInterceptor(m_comparator));<a name="line.689"></a> |
| <span class="sourceLineNo">690</span> } finally {<a name="line.690"></a> |
| <span class="sourceLineNo">691</span> m_dependency.releaseWriteLockIfHeld();<a name="line.691"></a> |
| <span class="sourceLineNo">692</span> }<a name="line.692"></a> |
| <span class="sourceLineNo">693</span> }<a name="line.693"></a> |
| <span class="sourceLineNo">694</span><a name="line.694"></a> |
| <span class="sourceLineNo">695</span> public Filter getFilter() {<a name="line.695"></a> |
| <span class="sourceLineNo">696</span> try {<a name="line.696"></a> |
| <span class="sourceLineNo">697</span> m_dependency.acquireReadLockIfNotHeld();<a name="line.697"></a> |
| <span class="sourceLineNo">698</span> return m_filter;<a name="line.698"></a> |
| <span class="sourceLineNo">699</span> } finally {<a name="line.699"></a> |
| <span class="sourceLineNo">700</span> m_dependency.releaseReadLockIfHeld();<a name="line.700"></a> |
| <span class="sourceLineNo">701</span> }<a name="line.701"></a> |
| <span class="sourceLineNo">702</span> }<a name="line.702"></a> |
| <span class="sourceLineNo">703</span><a name="line.703"></a> |
| <span class="sourceLineNo">704</span> public void setRankingInterceptor(ServiceRankingInterceptor interceptor) {<a name="line.704"></a> |
| <span class="sourceLineNo">705</span> m_dependency.getComponentInstance().getFactory().getLogger().log(Log.INFO, "Dependency " + m_dependency.getId<a name="line.705"></a> |
| <span class="sourceLineNo">706</span> () + " is getting a new ranking interceptor : " + interceptor);<a name="line.706"></a> |
| <span class="sourceLineNo">707</span> ChangeSet changeSet;<a name="line.707"></a> |
| <span class="sourceLineNo">708</span> try {<a name="line.708"></a> |
| <span class="sourceLineNo">709</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.709"></a> |
| <span class="sourceLineNo">710</span> ServiceReference oldBest = getFirstService();<a name="line.710"></a> |
| <span class="sourceLineNo">711</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.711"></a> |
| <span class="sourceLineNo">712</span> m_rankingInterceptor = interceptor;<a name="line.712"></a> |
| <span class="sourceLineNo">713</span> m_rankingInterceptor.open(m_dependency);<a name="line.713"></a> |
| <span class="sourceLineNo">714</span><a name="line.714"></a> |
| <span class="sourceLineNo">715</span> final List<ServiceReference> allServices = getMatchingServices();<a name="line.715"></a> |
| <span class="sourceLineNo">716</span> List<ServiceReference> references = Collections.emptyList();<a name="line.716"></a> |
| <span class="sourceLineNo">717</span> if (!allServices.isEmpty()) {<a name="line.717"></a> |
| <span class="sourceLineNo">718</span> references = m_rankingInterceptor.getServiceReferences(m_dependency, allServices);<a name="line.718"></a> |
| <span class="sourceLineNo">719</span> }<a name="line.719"></a> |
| <span class="sourceLineNo">720</span> RankingResult result = computeDifferences(beforeRanking, references);<a name="line.720"></a> |
| <span class="sourceLineNo">721</span> m_selectedReferences = result.selected;<a name="line.721"></a> |
| <span class="sourceLineNo">722</span> changeSet = new ChangeSet(getSelectedServices(), result.departures, result.arrivals, oldBest,<a name="line.722"></a> |
| <span class="sourceLineNo">723</span> getFirstService(), null, null);<a name="line.723"></a> |
| <span class="sourceLineNo">724</span> } finally {<a name="line.724"></a> |
| <span class="sourceLineNo">725</span> m_dependency.releaseWriteLockIfHeld();<a name="line.725"></a> |
| <span class="sourceLineNo">726</span> }<a name="line.726"></a> |
| <span class="sourceLineNo">727</span> // Calling onChange outside of the lock.<a name="line.727"></a> |
| <span class="sourceLineNo">728</span> m_dependency.onChange(changeSet);<a name="line.728"></a> |
| <span class="sourceLineNo">729</span> }<a name="line.729"></a> |
| <span class="sourceLineNo">730</span><a name="line.730"></a> |
| <span class="sourceLineNo">731</span> public void close() {<a name="line.731"></a> |
| <span class="sourceLineNo">732</span> reset();<a name="line.732"></a> |
| <span class="sourceLineNo">733</span> }<a name="line.733"></a> |
| <span class="sourceLineNo">734</span><a name="line.734"></a> |
| <span class="sourceLineNo">735</span> public void invalidateMatchingServices() {<a name="line.735"></a> |
| <span class="sourceLineNo">736</span> ChangeSet changeset;<a name="line.736"></a> |
| <span class="sourceLineNo">737</span> try {<a name="line.737"></a> |
| <span class="sourceLineNo">738</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.738"></a> |
| <span class="sourceLineNo">739</span> m_matchingReferences.clear();<a name="line.739"></a> |
| <span class="sourceLineNo">740</span> changeset = computeChangesInMatchingServices();<a name="line.740"></a> |
| <span class="sourceLineNo">741</span> } finally {<a name="line.741"></a> |
| <span class="sourceLineNo">742</span> m_dependency.releaseWriteLockIfHeld();<a name="line.742"></a> |
| <span class="sourceLineNo">743</span> }<a name="line.743"></a> |
| <span class="sourceLineNo">744</span> m_dependency.onChange(changeset);<a name="line.744"></a> |
| <span class="sourceLineNo">745</span> }<a name="line.745"></a> |
| <span class="sourceLineNo">746</span><a name="line.746"></a> |
| <span class="sourceLineNo">747</span> public void invalidateSelectedServices() {<a name="line.747"></a> |
| <span class="sourceLineNo">748</span> ChangeSet changeset;<a name="line.748"></a> |
| <span class="sourceLineNo">749</span> try {<a name="line.749"></a> |
| <span class="sourceLineNo">750</span> m_dependency.acquireWriteLockIfNotHeld();<a name="line.750"></a> |
| <span class="sourceLineNo">751</span> ServiceReference oldBest = getFirstService();<a name="line.751"></a> |
| <span class="sourceLineNo">752</span> List<ServiceReference> beforeRanking = getSelectedServices();<a name="line.752"></a> |
| <span class="sourceLineNo">753</span> m_selectedReferences.clear();<a name="line.753"></a> |
| <span class="sourceLineNo">754</span> final List<ServiceReference> allServices = getMatchingServices();<a name="line.754"></a> |
| <span class="sourceLineNo">755</span> List<ServiceReference> references = Collections.emptyList();<a name="line.755"></a> |
| <span class="sourceLineNo">756</span> if (!allServices.isEmpty()) {<a name="line.756"></a> |
| <span class="sourceLineNo">757</span> references = m_rankingInterceptor.getServiceReferences(m_dependency, allServices);<a name="line.757"></a> |
| <span class="sourceLineNo">758</span> }<a name="line.758"></a> |
| <span class="sourceLineNo">759</span> RankingResult result = computeDifferences(beforeRanking, references);<a name="line.759"></a> |
| <span class="sourceLineNo">760</span> m_selectedReferences = result.selected;<a name="line.760"></a> |
| <span class="sourceLineNo">761</span> changeset = new ChangeSet(getSelectedServices(), result.departures, result.arrivals, oldBest,<a name="line.761"></a> |
| <span class="sourceLineNo">762</span> getFirstService(), null, null);<a name="line.762"></a> |
| <span class="sourceLineNo">763</span> } finally {<a name="line.763"></a> |
| <span class="sourceLineNo">764</span> m_dependency.releaseWriteLockIfHeld();<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> m_dependency.onChange(changeset);<a name="line.767"></a> |
| <span class="sourceLineNo">768</span> }<a name="line.768"></a> |
| <span class="sourceLineNo">769</span><a name="line.769"></a> |
| <span class="sourceLineNo">770</span> private class RankingResult {<a name="line.770"></a> |
| <span class="sourceLineNo">771</span> final List<ServiceReference> departures;<a name="line.771"></a> |
| <span class="sourceLineNo">772</span> final List<ServiceReference> arrivals;<a name="line.772"></a> |
| <span class="sourceLineNo">773</span> final List<ServiceReference> selected;<a name="line.773"></a> |
| <span class="sourceLineNo">774</span><a name="line.774"></a> |
| <span class="sourceLineNo">775</span> private RankingResult(List<ServiceReference> departures, List<ServiceReference> arrivals,<a name="line.775"></a> |
| <span class="sourceLineNo">776</span> List<ServiceReference> selected) {<a name="line.776"></a> |
| <span class="sourceLineNo">777</span> this.departures = departures;<a name="line.777"></a> |
| <span class="sourceLineNo">778</span> this.arrivals = arrivals;<a name="line.778"></a> |
| <span class="sourceLineNo">779</span> this.selected = selected;<a name="line.779"></a> |
| <span class="sourceLineNo">780</span> }<a name="line.780"></a> |
| <span class="sourceLineNo">781</span> }<a name="line.781"></a> |
| <span class="sourceLineNo">782</span><a name="line.782"></a> |
| <span class="sourceLineNo">783</span> public class ChangeSet {<a name="line.783"></a> |
| <span class="sourceLineNo">784</span> public final List<ServiceReference> selected;<a name="line.784"></a> |
| <span class="sourceLineNo">785</span> public final List<ServiceReference> departures;<a name="line.785"></a> |
| <span class="sourceLineNo">786</span> public final List<ServiceReference> arrivals;<a name="line.786"></a> |
| <span class="sourceLineNo">787</span> public final ServiceReference oldFirstReference;<a name="line.787"></a> |
| <span class="sourceLineNo">788</span> public final ServiceReference newFirstReference;<a name="line.788"></a> |
| <span class="sourceLineNo">789</span> public final Object service;<a name="line.789"></a> |
| <span class="sourceLineNo">790</span> public final ServiceReference modified;<a name="line.790"></a> |
| <span class="sourceLineNo">791</span><a name="line.791"></a> |
| <span class="sourceLineNo">792</span> public ChangeSet(List<ServiceReference> selectedServices,<a name="line.792"></a> |
| <span class="sourceLineNo">793</span> List<ServiceReference> departures, List<ServiceReference> arrivals,<a name="line.793"></a> |
| <span class="sourceLineNo">794</span> ServiceReference oldFirst, ServiceReference newFirst,<a name="line.794"></a> |
| <span class="sourceLineNo">795</span> Object service, ServiceReference modified) {<a name="line.795"></a> |
| <span class="sourceLineNo">796</span> this.selected = selectedServices;<a name="line.796"></a> |
| <span class="sourceLineNo">797</span> this.departures = departures;<a name="line.797"></a> |
| <span class="sourceLineNo">798</span> this.arrivals = arrivals;<a name="line.798"></a> |
| <span class="sourceLineNo">799</span> this.oldFirstReference = oldFirst;<a name="line.799"></a> |
| <span class="sourceLineNo">800</span> this.newFirstReference = newFirst;<a name="line.800"></a> |
| <span class="sourceLineNo">801</span> this.service = service;<a name="line.801"></a> |
| <span class="sourceLineNo">802</span> this.modified = modified;<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> |
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| </pre> |
| </div> |
| </body> |
| </html> |