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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.util;<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.ContextListener;<a name="line.22"></a> |
| <span class="sourceLineNo">023</span>import org.apache.felix.ipojo.ContextSource;<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.InvalidSyntaxException;<a name="line.25"></a> |
| <span class="sourceLineNo">026</span>import org.osgi.framework.ServiceReference;<a name="line.26"></a> |
| <span class="sourceLineNo">027</span><a name="line.27"></a> |
| <span class="sourceLineNo">028</span>import java.util.ArrayList;<a name="line.28"></a> |
| <span class="sourceLineNo">029</span>import java.util.Arrays;<a name="line.29"></a> |
| <span class="sourceLineNo">030</span>import java.util.Dictionary;<a name="line.30"></a> |
| <span class="sourceLineNo">031</span>import java.util.List;<a name="line.31"></a> |
| <span class="sourceLineNo">032</span><a name="line.32"></a> |
| <span class="sourceLineNo">033</span>/**<a name="line.33"></a> |
| <span class="sourceLineNo">034</span> * This class manages context-source management.<a name="line.34"></a> |
| <span class="sourceLineNo">035</span> *<a name="line.35"></a> |
| <span class="sourceLineNo">036</span> * @author <a href="mailto:dev@felix.apache.org">Felix Project Team</a><a name="line.36"></a> |
| <span class="sourceLineNo">037</span> */<a name="line.37"></a> |
| <span class="sourceLineNo">038</span>public class ContextSourceManager implements ContextListener {<a name="line.38"></a> |
| <span class="sourceLineNo">039</span><a name="line.39"></a> |
| <span class="sourceLineNo">040</span> /**<a name="line.40"></a> |
| <span class="sourceLineNo">041</span> * The variable prefix<a name="line.41"></a> |
| <span class="sourceLineNo">042</span> */<a name="line.42"></a> |
| <span class="sourceLineNo">043</span> public static final String VARIABLE_START = "${";<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 variable end<a name="line.46"></a> |
| <span class="sourceLineNo">047</span> */<a name="line.47"></a> |
| <span class="sourceLineNo">048</span> public static final char VARIABLE_END = '}';<a name="line.48"></a> |
| <span class="sourceLineNo">049</span><a name="line.49"></a> |
| <span class="sourceLineNo">050</span> /**<a name="line.50"></a> |
| <span class="sourceLineNo">051</span> * List of characters forbidden in variable names<a name="line.51"></a> |
| <span class="sourceLineNo">052</span> */<a name="line.52"></a> |
| <span class="sourceLineNo">053</span> public static final List<Character> FORBIDDEN_CHARACTERS = Arrays.asList(<a name="line.53"></a> |
| <span class="sourceLineNo">054</span> '(', ')', '&', '|', '!', '=', '*', ' ');<a name="line.54"></a> |
| <span class="sourceLineNo">055</span><a name="line.55"></a> |
| <span class="sourceLineNo">056</span> /**<a name="line.56"></a> |
| <span class="sourceLineNo">057</span> * Managed dependency.<a name="line.57"></a> |
| <span class="sourceLineNo">058</span> */<a name="line.58"></a> |
| <span class="sourceLineNo">059</span> private DependencyModel m_dependency;<a name="line.59"></a> |
| <span class="sourceLineNo">060</span> /**<a name="line.60"></a> |
| <span class="sourceLineNo">061</span> * List of monitored context sources.<a name="line.61"></a> |
| <span class="sourceLineNo">062</span> */<a name="line.62"></a> |
| <span class="sourceLineNo">063</span> private List<ContextSource> m_sources = new ArrayList<ContextSource>(1);<a name="line.63"></a> |
| <span class="sourceLineNo">064</span> /**<a name="line.64"></a> |
| <span class="sourceLineNo">065</span> * Variables contained in the original filter.<a name="line.65"></a> |
| <span class="sourceLineNo">066</span> */<a name="line.66"></a> |
| <span class="sourceLineNo">067</span> private List<String> m_variables;<a name="line.67"></a> |
| <span class="sourceLineNo">068</span> /**<a name="line.68"></a> |
| <span class="sourceLineNo">069</span> * Original filter (containing variables).<a name="line.69"></a> |
| <span class="sourceLineNo">070</span> */<a name="line.70"></a> |
| <span class="sourceLineNo">071</span> private String m_filter;<a name="line.71"></a> |
| <span class="sourceLineNo">072</span> /**<a name="line.72"></a> |
| <span class="sourceLineNo">073</span> * Bundle context.<a name="line.73"></a> |
| <span class="sourceLineNo">074</span> */<a name="line.74"></a> |
| <span class="sourceLineNo">075</span> private BundleContext m_context;<a name="line.75"></a> |
| <span class="sourceLineNo">076</span> /**<a name="line.76"></a> |
| <span class="sourceLineNo">077</span> * The Context-Source service tracker.<a name="line.77"></a> |
| <span class="sourceLineNo">078</span> */<a name="line.78"></a> |
| <span class="sourceLineNo">079</span> private Tracker m_tracker;<a name="line.79"></a> |
| <span class="sourceLineNo">080</span><a name="line.80"></a> |
| <span class="sourceLineNo">081</span> /**<a name="line.81"></a> |
| <span class="sourceLineNo">082</span> * Creates the context source manager.<a name="line.82"></a> |
| <span class="sourceLineNo">083</span> *<a name="line.83"></a> |
| <span class="sourceLineNo">084</span> * @param dependency the dependency model on which this manager is plugged.<a name="line.84"></a> |
| <span class="sourceLineNo">085</span> */<a name="line.85"></a> |
| <span class="sourceLineNo">086</span> public ContextSourceManager(DependencyModel dependency) throws InvalidSyntaxException {<a name="line.86"></a> |
| <span class="sourceLineNo">087</span> m_filter = dependency.getFilter();<a name="line.87"></a> |
| <span class="sourceLineNo">088</span> m_variables = extractVariablesFromFilter(m_filter);<a name="line.88"></a> |
| <span class="sourceLineNo">089</span> m_dependency = dependency;<a name="line.89"></a> |
| <span class="sourceLineNo">090</span> m_context = dependency.getComponentInstance().getContext();<a name="line.90"></a> |
| <span class="sourceLineNo">091</span> }<a name="line.91"></a> |
| <span class="sourceLineNo">092</span><a name="line.92"></a> |
| <span class="sourceLineNo">093</span> /**<a name="line.93"></a> |
| <span class="sourceLineNo">094</span> * This method substitutes ${var} substring by values stored in a map.<a name="line.94"></a> |
| <span class="sourceLineNo">095</span> *<a name="line.95"></a> |
| <span class="sourceLineNo">096</span> * @param str : string with variables<a name="line.96"></a> |
| <span class="sourceLineNo">097</span> * @param values : dictionary containing the variable name and the value.<a name="line.97"></a> |
| <span class="sourceLineNo">098</span> * @return resulted string<a name="line.98"></a> |
| <span class="sourceLineNo">099</span> */<a name="line.99"></a> |
| <span class="sourceLineNo">100</span> public static String substitute(String str, Dictionary values) {<a name="line.100"></a> |
| <span class="sourceLineNo">101</span> int len = str.length();<a name="line.101"></a> |
| <span class="sourceLineNo">102</span> StringBuilder builder = new StringBuilder(len);<a name="line.102"></a> |
| <span class="sourceLineNo">103</span><a name="line.103"></a> |
| <span class="sourceLineNo">104</span> int prev = 0;<a name="line.104"></a> |
| <span class="sourceLineNo">105</span> int start = str.indexOf("${");<a name="line.105"></a> |
| <span class="sourceLineNo">106</span> int end = str.indexOf('}', start);<a name="line.106"></a> |
| <span class="sourceLineNo">107</span> while (start != -1 && end != -1) {<a name="line.107"></a> |
| <span class="sourceLineNo">108</span> String key = str.substring(start + 2, end);<a name="line.108"></a> |
| <span class="sourceLineNo">109</span> Object value = values.get(key);<a name="line.109"></a> |
| <span class="sourceLineNo">110</span> if (value == null) {<a name="line.110"></a> |
| <span class="sourceLineNo">111</span> builder.append(str.substring(prev, end + 1));<a name="line.111"></a> |
| <span class="sourceLineNo">112</span> } else {<a name="line.112"></a> |
| <span class="sourceLineNo">113</span> builder.append(str.substring(prev, start));<a name="line.113"></a> |
| <span class="sourceLineNo">114</span> builder.append(value);<a name="line.114"></a> |
| <span class="sourceLineNo">115</span> }<a name="line.115"></a> |
| <span class="sourceLineNo">116</span> prev = end + 1;<a name="line.116"></a> |
| <span class="sourceLineNo">117</span> if (prev >= str.length()) {<a name="line.117"></a> |
| <span class="sourceLineNo">118</span> break;<a name="line.118"></a> |
| <span class="sourceLineNo">119</span> }<a name="line.119"></a> |
| <span class="sourceLineNo">120</span><a name="line.120"></a> |
| <span class="sourceLineNo">121</span> start = str.indexOf("${", prev);<a name="line.121"></a> |
| <span class="sourceLineNo">122</span> if (start != -1) {<a name="line.122"></a> |
| <span class="sourceLineNo">123</span> end = str.indexOf('}', start);<a name="line.123"></a> |
| <span class="sourceLineNo">124</span> }<a name="line.124"></a> |
| <span class="sourceLineNo">125</span> }<a name="line.125"></a> |
| <span class="sourceLineNo">126</span><a name="line.126"></a> |
| <span class="sourceLineNo">127</span> builder.append(str.substring(prev));<a name="line.127"></a> |
| <span class="sourceLineNo">128</span><a name="line.128"></a> |
| <span class="sourceLineNo">129</span> return builder.toString();<a name="line.129"></a> |
| <span class="sourceLineNo">130</span> }<a name="line.130"></a> |
| <span class="sourceLineNo">131</span><a name="line.131"></a> |
| <span class="sourceLineNo">132</span> /**<a name="line.132"></a> |
| <span class="sourceLineNo">133</span> * Extracts the variables (${name}) from the given filter.<a name="line.133"></a> |
| <span class="sourceLineNo">134</span> *<a name="line.134"></a> |
| <span class="sourceLineNo">135</span> * @param filter : string form of the filter.<a name="line.135"></a> |
| <span class="sourceLineNo">136</span> * @return the list of found properties.<a name="line.136"></a> |
| <span class="sourceLineNo">137</span> * @throws InvalidSyntaxException thrown when the variables are not consistent.<a name="line.137"></a> |
| <span class="sourceLineNo">138</span> */<a name="line.138"></a> |
| <span class="sourceLineNo">139</span> public static List<String> extractVariablesFromFilter(String filter) throws InvalidSyntaxException {<a name="line.139"></a> |
| <span class="sourceLineNo">140</span> List<String> variables = new ArrayList<String>();<a name="line.140"></a> |
| <span class="sourceLineNo">141</span> int prev;<a name="line.141"></a> |
| <span class="sourceLineNo">142</span> int start = filter.indexOf(VARIABLE_START);<a name="line.142"></a> |
| <span class="sourceLineNo">143</span> int end = filter.indexOf(VARIABLE_END, start);<a name="line.143"></a> |
| <span class="sourceLineNo">144</span> while (start != -1) {<a name="line.144"></a> |
| <span class="sourceLineNo">145</span> // Unfinished variable<a name="line.145"></a> |
| <span class="sourceLineNo">146</span> if (end == -1) {<a name="line.146"></a> |
| <span class="sourceLineNo">147</span> throw new InvalidSyntaxException("The filter contains an unfinished variable", filter);<a name="line.147"></a> |
| <span class="sourceLineNo">148</span> }<a name="line.148"></a> |
| <span class="sourceLineNo">149</span><a name="line.149"></a> |
| <span class="sourceLineNo">150</span> String key = filter.substring(start + VARIABLE_START.length(), end);<a name="line.150"></a> |
| <span class="sourceLineNo">151</span><a name="line.151"></a> |
| <span class="sourceLineNo">152</span> // Error detection :<a name="line.152"></a> |
| <span class="sourceLineNo">153</span> // Empty variable.<a name="line.153"></a> |
| <span class="sourceLineNo">154</span> if (key.length() == 0) {<a name="line.154"></a> |
| <span class="sourceLineNo">155</span> throw new InvalidSyntaxException("The filter variable '${}' is not a valid " +<a name="line.155"></a> |
| <span class="sourceLineNo">156</span> "variable", filter);<a name="line.156"></a> |
| <span class="sourceLineNo">157</span> }<a name="line.157"></a> |
| <span class="sourceLineNo">158</span> // Variable with spaces.<a name="line.158"></a> |
| <span class="sourceLineNo">159</span> Character forbidden = containsForbiddenCharacter(key);<a name="line.159"></a> |
| <span class="sourceLineNo">160</span> if (forbidden != null) {<a name="line.160"></a> |
| <span class="sourceLineNo">161</span> throw new InvalidSyntaxException("The filter variable '${" + key + "}' contains a forbidden " +<a name="line.161"></a> |
| <span class="sourceLineNo">162</span> "character : '" + forbidden + "'", filter);<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> variables.add(key);<a name="line.166"></a> |
| <span class="sourceLineNo">167</span> prev = end + 1;<a name="line.167"></a> |
| <span class="sourceLineNo">168</span> if (prev >= filter.length()) {<a name="line.168"></a> |
| <span class="sourceLineNo">169</span> break;<a name="line.169"></a> |
| <span class="sourceLineNo">170</span> }<a name="line.170"></a> |
| <span class="sourceLineNo">171</span><a name="line.171"></a> |
| <span class="sourceLineNo">172</span> start = filter.indexOf(VARIABLE_START, prev);<a name="line.172"></a> |
| <span class="sourceLineNo">173</span> if (start != -1) {<a name="line.173"></a> |
| <span class="sourceLineNo">174</span> end = filter.indexOf(VARIABLE_END, start);<a name="line.174"></a> |
| <span class="sourceLineNo">175</span> }<a name="line.175"></a> |
| <span class="sourceLineNo">176</span> }<a name="line.176"></a> |
| <span class="sourceLineNo">177</span><a name="line.177"></a> |
| <span class="sourceLineNo">178</span> return variables;<a name="line.178"></a> |
| <span class="sourceLineNo">179</span> }<a name="line.179"></a> |
| <span class="sourceLineNo">180</span><a name="line.180"></a> |
| <span class="sourceLineNo">181</span> private static Character containsForbiddenCharacter(String key) {<a name="line.181"></a> |
| <span class="sourceLineNo">182</span> for (Character character : FORBIDDEN_CHARACTERS) {<a name="line.182"></a> |
| <span class="sourceLineNo">183</span> if (key.indexOf(character) != -1) {<a name="line.183"></a> |
| <span class="sourceLineNo">184</span> return character;<a name="line.184"></a> |
| <span class="sourceLineNo">185</span> }<a name="line.185"></a> |
| <span class="sourceLineNo">186</span> }<a name="line.186"></a> |
| <span class="sourceLineNo">187</span> // Safe key.<a name="line.187"></a> |
| <span class="sourceLineNo">188</span> return null;<a name="line.188"></a> |
| <span class="sourceLineNo">189</span> }<a name="line.189"></a> |
| <span class="sourceLineNo">190</span><a name="line.190"></a> |
| <span class="sourceLineNo">191</span> /**<a name="line.191"></a> |
| <span class="sourceLineNo">192</span> * Start the context management.<a name="line.192"></a> |
| <span class="sourceLineNo">193</span> */<a name="line.193"></a> |
| <span class="sourceLineNo">194</span> public void start() {<a name="line.194"></a> |
| <span class="sourceLineNo">195</span> if (m_tracker == null) {<a name="line.195"></a> |
| <span class="sourceLineNo">196</span> m_tracker = new Tracker(m_context, ContextSource.class.getName(), new SourceTracker());<a name="line.196"></a> |
| <span class="sourceLineNo">197</span> }<a name="line.197"></a> |
| <span class="sourceLineNo">198</span> m_tracker.open();<a name="line.198"></a> |
| <span class="sourceLineNo">199</span> computeFilter();<a name="line.199"></a> |
| <span class="sourceLineNo">200</span> }<a name="line.200"></a> |
| <span class="sourceLineNo">201</span><a name="line.201"></a> |
| <span class="sourceLineNo">202</span> /**<a name="line.202"></a> |
| <span class="sourceLineNo">203</span> * Stop the context management.<a name="line.203"></a> |
| <span class="sourceLineNo">204</span> */<a name="line.204"></a> |
| <span class="sourceLineNo">205</span> public void stop() {<a name="line.205"></a> |
| <span class="sourceLineNo">206</span> if (m_tracker != null) {<a name="line.206"></a> |
| <span class="sourceLineNo">207</span> m_tracker.close();<a name="line.207"></a> |
| <span class="sourceLineNo">208</span> m_tracker = null;<a name="line.208"></a> |
| <span class="sourceLineNo">209</span> }<a name="line.209"></a> |
| <span class="sourceLineNo">210</span> // Reinitialize the filter.<a name="line.210"></a> |
| <span class="sourceLineNo">211</span> setFilter(m_filter);<a name="line.211"></a> |
| <span class="sourceLineNo">212</span> for (ContextSource source : m_sources) {<a name="line.212"></a> |
| <span class="sourceLineNo">213</span> source.unregisterContextListener(this);<a name="line.213"></a> |
| <span class="sourceLineNo">214</span> }<a name="line.214"></a> |
| <span class="sourceLineNo">215</span> m_sources.clear();<a name="line.215"></a> |
| <span class="sourceLineNo">216</span> }<a name="line.216"></a> |
| <span class="sourceLineNo">217</span><a name="line.217"></a> |
| <span class="sourceLineNo">218</span> /**<a name="line.218"></a> |
| <span class="sourceLineNo">219</span> * Set the filter of the managed dependency.<a name="line.219"></a> |
| <span class="sourceLineNo">220</span> *<a name="line.220"></a> |
| <span class="sourceLineNo">221</span> * @param filter : the new filter to apply<a name="line.221"></a> |
| <span class="sourceLineNo">222</span> */<a name="line.222"></a> |
| <span class="sourceLineNo">223</span> private void setFilter(String filter) {<a name="line.223"></a> |
| <span class="sourceLineNo">224</span> if (!filter.equals(m_dependency.getFilter())) {<a name="line.224"></a> |
| <span class="sourceLineNo">225</span> // Reconfigure<a name="line.225"></a> |
| <span class="sourceLineNo">226</span> try {<a name="line.226"></a> |
| <span class="sourceLineNo">227</span> m_dependency.setFilter(m_context.createFilter(filter));<a name="line.227"></a> |
| <span class="sourceLineNo">228</span> } catch (InvalidSyntaxException e) {<a name="line.228"></a> |
| <span class="sourceLineNo">229</span> throw new IllegalStateException("A context filter is invalid : " + filter, e);<a name="line.229"></a> |
| <span class="sourceLineNo">230</span> }<a name="line.230"></a> |
| <span class="sourceLineNo">231</span> }<a name="line.231"></a> |
| <span class="sourceLineNo">232</span> }<a name="line.232"></a> |
| <span class="sourceLineNo">233</span><a name="line.233"></a> |
| <span class="sourceLineNo">234</span> /**<a name="line.234"></a> |
| <span class="sourceLineNo">235</span> * Compute the new filter.<a name="line.235"></a> |
| <span class="sourceLineNo">236</span> */<a name="line.236"></a> |
| <span class="sourceLineNo">237</span> private void computeFilter() {<a name="line.237"></a> |
| <span class="sourceLineNo">238</span> String fil = m_filter; // Gets a copy.<a name="line.238"></a> |
| <span class="sourceLineNo">239</span> synchronized (this) {<a name="line.239"></a> |
| <span class="sourceLineNo">240</span> for (ContextSource m_source : m_sources) {<a name="line.240"></a> |
| <span class="sourceLineNo">241</span> Dictionary props = m_source.getContext();<a name="line.241"></a> |
| <span class="sourceLineNo">242</span> fil = substitute(fil, props); //NOPMD<a name="line.242"></a> |
| <span class="sourceLineNo">243</span> }<a name="line.243"></a> |
| <span class="sourceLineNo">244</span> }<a name="line.244"></a> |
| <span class="sourceLineNo">245</span> if (!fil.equals(m_dependency.getFilter())) {<a name="line.245"></a> |
| <span class="sourceLineNo">246</span> setFilter(fil);<a name="line.246"></a> |
| <span class="sourceLineNo">247</span> }<a name="line.247"></a> |
| <span class="sourceLineNo">248</span> }<a name="line.248"></a> |
| <span class="sourceLineNo">249</span><a name="line.249"></a> |
| <span class="sourceLineNo">250</span> /**<a name="line.250"></a> |
| <span class="sourceLineNo">251</span> * A context source has modified a monitored property.<a name="line.251"></a> |
| <span class="sourceLineNo">252</span> *<a name="line.252"></a> |
| <span class="sourceLineNo">253</span> * @param source : source<a name="line.253"></a> |
| <span class="sourceLineNo">254</span> * @param property : modified property<a name="line.254"></a> |
| <span class="sourceLineNo">255</span> * @param value : new value.<a name="line.255"></a> |
| <span class="sourceLineNo">256</span> * @see org.apache.felix.ipojo.ContextListener#update(org.apache.felix.ipojo.ContextSource, String, Object)<a name="line.256"></a> |
| <span class="sourceLineNo">257</span> */<a name="line.257"></a> |
| <span class="sourceLineNo">258</span> public synchronized void update(ContextSource source, String property, Object value) {<a name="line.258"></a> |
| <span class="sourceLineNo">259</span> computeFilter();<a name="line.259"></a> |
| <span class="sourceLineNo">260</span> }<a name="line.260"></a> |
| <span class="sourceLineNo">261</span><a name="line.261"></a> |
| <span class="sourceLineNo">262</span> /**<a name="line.262"></a> |
| <span class="sourceLineNo">263</span> * A context source appears.<a name="line.263"></a> |
| <span class="sourceLineNo">264</span> *<a name="line.264"></a> |
| <span class="sourceLineNo">265</span> * @param source : new context source.<a name="line.265"></a> |
| <span class="sourceLineNo">266</span> */<a name="line.266"></a> |
| <span class="sourceLineNo">267</span> public void addContextSource(ContextSource source) {<a name="line.267"></a> |
| <span class="sourceLineNo">268</span> m_sources.add(source);<a name="line.268"></a> |
| <span class="sourceLineNo">269</span> computeFilter();<a name="line.269"></a> |
| <span class="sourceLineNo">270</span> source.registerContextListener(this, m_variables.toArray(new String[m_variables.size()]));<a name="line.270"></a> |
| <span class="sourceLineNo">271</span> }<a name="line.271"></a> |
| <span class="sourceLineNo">272</span><a name="line.272"></a> |
| <span class="sourceLineNo">273</span> /**<a name="line.273"></a> |
| <span class="sourceLineNo">274</span> * A context source disappears.<a name="line.274"></a> |
| <span class="sourceLineNo">275</span> *<a name="line.275"></a> |
| <span class="sourceLineNo">276</span> * @param source : leaving context source.<a name="line.276"></a> |
| <span class="sourceLineNo">277</span> */<a name="line.277"></a> |
| <span class="sourceLineNo">278</span> public void removeContextSource(ContextSource source) {<a name="line.278"></a> |
| <span class="sourceLineNo">279</span> source.unregisterContextListener(this);<a name="line.279"></a> |
| <span class="sourceLineNo">280</span> m_sources.remove(source);<a name="line.280"></a> |
| <span class="sourceLineNo">281</span> computeFilter();<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> private class SourceTracker implements TrackerCustomizer {<a name="line.284"></a> |
| <span class="sourceLineNo">285</span> /**<a name="line.285"></a> |
| <span class="sourceLineNo">286</span> * A new context-source was added.<a name="line.286"></a> |
| <span class="sourceLineNo">287</span> * This method inject the context-source object in the source manager.<a name="line.287"></a> |
| <span class="sourceLineNo">288</span> *<a name="line.288"></a> |
| <span class="sourceLineNo">289</span> * @param reference : service reference.<a name="line.289"></a> |
| <span class="sourceLineNo">290</span> * @see TrackerCustomizer#addedService(org.osgi.framework.ServiceReference)<a name="line.290"></a> |
| <span class="sourceLineNo">291</span> */<a name="line.291"></a> |
| <span class="sourceLineNo">292</span> public void addedService(ServiceReference reference) {<a name="line.292"></a> |
| <span class="sourceLineNo">293</span> addContextSource((ContextSource) m_tracker.getService(reference));<a name="line.293"></a> |
| <span class="sourceLineNo">294</span> }<a name="line.294"></a> |
| <span class="sourceLineNo">295</span><a name="line.295"></a> |
| <span class="sourceLineNo">296</span> /**<a name="line.296"></a> |
| <span class="sourceLineNo">297</span> * A new context-source is adding in the tracker..<a name="line.297"></a> |
| <span class="sourceLineNo">298</span> *<a name="line.298"></a> |
| <span class="sourceLineNo">299</span> * @param reference : service reference<a name="line.299"></a> |
| <span class="sourceLineNo">300</span> * @return true.<a name="line.300"></a> |
| <span class="sourceLineNo">301</span> * @see TrackerCustomizer#addingService(org.osgi.framework.ServiceReference)<a name="line.301"></a> |
| <span class="sourceLineNo">302</span> */<a name="line.302"></a> |
| <span class="sourceLineNo">303</span> public boolean addingService(ServiceReference reference) {<a name="line.303"></a> |
| <span class="sourceLineNo">304</span> return true;<a name="line.304"></a> |
| <span class="sourceLineNo">305</span> }<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 used context-source is modified.<a name="line.308"></a> |
| <span class="sourceLineNo">309</span> *<a name="line.309"></a> |
| <span class="sourceLineNo">310</span> * @param reference : service reference.<a name="line.310"></a> |
| <span class="sourceLineNo">311</span> * @param service : service object.<a name="line.311"></a> |
| <span class="sourceLineNo">312</span> * @see TrackerCustomizer#modifiedService(org.osgi.framework.ServiceReference, Object)<a name="line.312"></a> |
| <span class="sourceLineNo">313</span> */<a name="line.313"></a> |
| <span class="sourceLineNo">314</span> public void modifiedService(ServiceReference reference, Object service) {<a name="line.314"></a> |
| <span class="sourceLineNo">315</span> // Nothing to do.<a name="line.315"></a> |
| <span class="sourceLineNo">316</span> }<a name="line.316"></a> |
| <span class="sourceLineNo">317</span><a name="line.317"></a> |
| <span class="sourceLineNo">318</span> /**<a name="line.318"></a> |
| <span class="sourceLineNo">319</span> * A used context-source disappears.<a name="line.319"></a> |
| <span class="sourceLineNo">320</span> * This method notify the Source Manager in order to manage this departure.<a name="line.320"></a> |
| <span class="sourceLineNo">321</span> *<a name="line.321"></a> |
| <span class="sourceLineNo">322</span> * @param reference : service reference.<a name="line.322"></a> |
| <span class="sourceLineNo">323</span> * @param service : service object.<a name="line.323"></a> |
| <span class="sourceLineNo">324</span> * @see TrackerCustomizer#modifiedService(org.osgi.framework.ServiceReference, Object)<a name="line.324"></a> |
| <span class="sourceLineNo">325</span> */<a name="line.325"></a> |
| <span class="sourceLineNo">326</span> public void removedService(ServiceReference reference, Object service) {<a name="line.326"></a> |
| <span class="sourceLineNo">327</span> removeContextSource((ContextSource) service);<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><a name="line.331"></a> |
| <span class="sourceLineNo">332</span>}<a name="line.332"></a> |
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| </div> |
| </body> |
| </html> |
