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<pre><span class="sourceLineNo">001</span>/*<a name="line.1"></a>
<span class="sourceLineNo">002</span> * Copyright (C) 2008-2013, fluid Operations AG<a name="line.2"></a>
<span class="sourceLineNo">003</span> *<a name="line.3"></a>
<span class="sourceLineNo">004</span> * FedX is free software: you can redistribute it and/or modify<a name="line.4"></a>
<span class="sourceLineNo">005</span> * it under the terms of the GNU Affero General Public License as<a name="line.5"></a>
<span class="sourceLineNo">006</span> * published by the Free Software Foundation, either version 3 of the<a name="line.6"></a>
<span class="sourceLineNo">007</span> * License, or (at your option) any later version.<a name="line.7"></a>
<span class="sourceLineNo">008</span> * <a name="line.8"></a>
<span class="sourceLineNo">009</span> * This program is distributed in the hope that it will be useful,<a name="line.9"></a>
<span class="sourceLineNo">010</span> * but WITHOUT ANY WARRANTY; without even the implied warranty of<a name="line.10"></a>
<span class="sourceLineNo">011</span> * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the<a name="line.11"></a>
<span class="sourceLineNo">012</span> * GNU Affero General Public License for more details.<a name="line.12"></a>
<span class="sourceLineNo">013</span> * <a name="line.13"></a>
<span class="sourceLineNo">014</span> * You should have received a copy of the GNU Affero General Public License<a name="line.14"></a>
<span class="sourceLineNo">015</span> * along with this program.  If not, see &lt;http://www.gnu.org/licenses/&gt;.<a name="line.15"></a>
<span class="sourceLineNo">016</span> */<a name="line.16"></a>
<span class="sourceLineNo">017</span><a name="line.17"></a>
<span class="sourceLineNo">018</span>package com.fluidops.fedx;<a name="line.18"></a>
<span class="sourceLineNo">019</span><a name="line.19"></a>
<span class="sourceLineNo">020</span>import info.aduna.iteration.CloseableIteration;<a name="line.20"></a>
<span class="sourceLineNo">021</span>import info.aduna.iteration.DistinctIteration;<a name="line.21"></a>
<span class="sourceLineNo">022</span>import info.aduna.iteration.ExceptionConvertingIteration;<a name="line.22"></a>
<span class="sourceLineNo">023</span><a name="line.23"></a>
<span class="sourceLineNo">024</span>import java.util.ArrayList;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import java.util.List;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.apache.log4j.Logger;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.openrdf.model.Namespace;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.openrdf.model.Resource;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.openrdf.model.Statement;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.openrdf.model.URI;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.openrdf.model.Value;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.openrdf.model.ValueFactory;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.openrdf.query.BindingSet;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.openrdf.query.Dataset;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.openrdf.query.QueryEvaluationException;<a name="line.36"></a>
<span class="sourceLineNo">037</span>import org.openrdf.query.algebra.TupleExpr;<a name="line.37"></a>
<span class="sourceLineNo">038</span>import org.openrdf.query.impl.EmptyBindingSet;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.openrdf.repository.RepositoryException;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.openrdf.sail.SailConnection;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.openrdf.sail.SailException;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.openrdf.sail.helpers.SailBase;<a name="line.42"></a>
<span class="sourceLineNo">043</span>import org.openrdf.sail.helpers.SailConnectionBase;<a name="line.43"></a>
<span class="sourceLineNo">044</span><a name="line.44"></a>
<span class="sourceLineNo">045</span>import com.fluidops.fedx.evaluation.FederationEvalStrategy;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import com.fluidops.fedx.evaluation.concurrent.ParallelExecutor;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import com.fluidops.fedx.evaluation.concurrent.ParallelTask;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import com.fluidops.fedx.evaluation.iterator.RepositoryExceptionConvertingIteration;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import com.fluidops.fedx.evaluation.union.SynchronousWorkerUnion;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import com.fluidops.fedx.evaluation.union.WorkerUnionBase;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import com.fluidops.fedx.optimizer.Optimizer;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import com.fluidops.fedx.sail.FedXSailRepositoryConnection;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import com.fluidops.fedx.structures.Endpoint;<a name="line.53"></a>
<span class="sourceLineNo">054</span>import com.fluidops.fedx.structures.QueryInfo;<a name="line.54"></a>
<span class="sourceLineNo">055</span>import com.fluidops.fedx.structures.QueryType;<a name="line.55"></a>
<span class="sourceLineNo">056</span><a name="line.56"></a>
<span class="sourceLineNo">057</span><a name="line.57"></a>
<span class="sourceLineNo">058</span>/**<a name="line.58"></a>
<span class="sourceLineNo">059</span> * An implementation of RepositoryConnection that uses {@link FederationEvalStrategy} to evaluate <a name="line.59"></a>
<span class="sourceLineNo">060</span> * provided queries. Prior to evaluation various optimizations are performed, see {@link Optimizer}<a name="line.60"></a>
<span class="sourceLineNo">061</span> * for further details.<a name="line.61"></a>
<span class="sourceLineNo">062</span> * <a name="line.62"></a>
<span class="sourceLineNo">063</span> * Implementation notes:<a name="line.63"></a>
<span class="sourceLineNo">064</span> *  - the federation connection currently is read only<a name="line.64"></a>
<span class="sourceLineNo">065</span> *  - not all methods are implemented as of now<a name="line.65"></a>
<span class="sourceLineNo">066</span> * <a name="line.66"></a>
<span class="sourceLineNo">067</span> * @author Andreas Schwarte<a name="line.67"></a>
<span class="sourceLineNo">068</span> *<a name="line.68"></a>
<span class="sourceLineNo">069</span> */<a name="line.69"></a>
<span class="sourceLineNo">070</span>public class FedXConnection extends SailConnectionBase {<a name="line.70"></a>
<span class="sourceLineNo">071</span>        <a name="line.71"></a>
<span class="sourceLineNo">072</span>        public static Logger log = Logger.getLogger(FedXConnection.class);<a name="line.72"></a>
<span class="sourceLineNo">073</span>        protected FedX federation;<a name="line.73"></a>
<span class="sourceLineNo">074</span>        <a name="line.74"></a>
<span class="sourceLineNo">075</span>        public FedXConnection(FedX federation)<a name="line.75"></a>
<span class="sourceLineNo">076</span>                        throws SailException {<a name="line.76"></a>
<span class="sourceLineNo">077</span>                super(new SailBaseDefaultImpl());<a name="line.77"></a>
<span class="sourceLineNo">078</span>                this.federation = federation;<a name="line.78"></a>
<span class="sourceLineNo">079</span>        }<a name="line.79"></a>
<span class="sourceLineNo">080</span><a name="line.80"></a>
<span class="sourceLineNo">081</span>        @Override<a name="line.81"></a>
<span class="sourceLineNo">082</span>        protected CloseableIteration&lt;? extends BindingSet, QueryEvaluationException&gt; evaluateInternal(<a name="line.82"></a>
<span class="sourceLineNo">083</span>                        TupleExpr query, Dataset dataset, BindingSet bindings,<a name="line.83"></a>
<span class="sourceLineNo">084</span>                        boolean includeInferred) throws SailException {<a name="line.84"></a>
<span class="sourceLineNo">085</span>                <a name="line.85"></a>
<span class="sourceLineNo">086</span>                FederationEvalStrategy strategy = FederationManager.getInstance().getStrategy();<a name="line.86"></a>
<span class="sourceLineNo">087</span><a name="line.87"></a>
<span class="sourceLineNo">088</span>                long start=0;<a name="line.88"></a>
<span class="sourceLineNo">089</span>                if (true) {<a name="line.89"></a>
<span class="sourceLineNo">090</span>                        if (log.isDebugEnabled()) {<a name="line.90"></a>
<span class="sourceLineNo">091</span>                                log.debug("Optimization start");<a name="line.91"></a>
<span class="sourceLineNo">092</span>                                start = System.currentTimeMillis();<a name="line.92"></a>
<span class="sourceLineNo">093</span>                        }<a name="line.93"></a>
<span class="sourceLineNo">094</span>                        try {<a name="line.94"></a>
<span class="sourceLineNo">095</span>                                String queryString = getOriginalQueryString(bindings);<a name="line.95"></a>
<span class="sourceLineNo">096</span>                                if (queryString==null)<a name="line.96"></a>
<span class="sourceLineNo">097</span>                                        logger.warn("Query string is null. Please check your FedX setup.");<a name="line.97"></a>
<span class="sourceLineNo">098</span>                                QueryInfo queryInfo = new QueryInfo(queryString, getOriginalQueryType(bindings));<a name="line.98"></a>
<span class="sourceLineNo">099</span>                                FederationManager.getMonitoringService().monitorQuery(queryInfo);<a name="line.99"></a>
<span class="sourceLineNo">100</span>                                query = Optimizer.optimize(query, dataset, bindings, strategy, queryInfo);<a name="line.100"></a>
<span class="sourceLineNo">101</span>                        }  catch (Exception e) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>                                log.error("Exception occured during optimization.", e);<a name="line.102"></a>
<span class="sourceLineNo">103</span>                                throw new SailException(e);<a name="line.103"></a>
<span class="sourceLineNo">104</span>                        }<a name="line.104"></a>
<span class="sourceLineNo">105</span>                        if (log.isDebugEnabled())<a name="line.105"></a>
<span class="sourceLineNo">106</span>                                log.debug(("Optimization duration: " + ((System.currentTimeMillis()-start))));<a name="line.106"></a>
<span class="sourceLineNo">107</span>                }<a name="line.107"></a>
<span class="sourceLineNo">108</span><a name="line.108"></a>
<span class="sourceLineNo">109</span>                // log the optimized query plan, if Config#isLogQueryPlan(), otherwise void operation<a name="line.109"></a>
<span class="sourceLineNo">110</span>                FederationManager.getMonitoringService().logQueryPlan(query);<a name="line.110"></a>
<span class="sourceLineNo">111</span>                <a name="line.111"></a>
<span class="sourceLineNo">112</span>                if (Config.getConfig().isDebugQueryPlan()) {<a name="line.112"></a>
<span class="sourceLineNo">113</span>                        System.out.println("Optimized query execution plan: \n" + query);<a name="line.113"></a>
<span class="sourceLineNo">114</span>                        log.debug("Optimized query execution plan: \n" + query);<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>                try {<a name="line.117"></a>
<span class="sourceLineNo">118</span>                        return strategy.evaluate(query, EmptyBindingSet.getInstance());<a name="line.118"></a>
<span class="sourceLineNo">119</span>                } catch (QueryEvaluationException e) {<a name="line.119"></a>
<span class="sourceLineNo">120</span>                        throw new SailException(e);<a name="line.120"></a>
<span class="sourceLineNo">121</span>                }               <a name="line.121"></a>
<span class="sourceLineNo">122</span>        }<a name="line.122"></a>
<span class="sourceLineNo">123</span><a name="line.123"></a>
<span class="sourceLineNo">124</span>        <a name="line.124"></a>
<span class="sourceLineNo">125</span>        @Override<a name="line.125"></a>
<span class="sourceLineNo">126</span>        protected void clearInternal(Resource... contexts) throws SailException {<a name="line.126"></a>
<span class="sourceLineNo">127</span>                throw new UnsupportedOperationException("Operation is not yet supported.");             <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>        @Override<a name="line.130"></a>
<span class="sourceLineNo">131</span>        protected void clearNamespacesInternal() throws SailException {<a name="line.131"></a>
<span class="sourceLineNo">132</span>                throw new UnsupportedOperationException("Operation is not yet supported.");             <a name="line.132"></a>
<span class="sourceLineNo">133</span>        }<a name="line.133"></a>
<span class="sourceLineNo">134</span><a name="line.134"></a>
<span class="sourceLineNo">135</span>        @Override<a name="line.135"></a>
<span class="sourceLineNo">136</span>        protected void closeInternal() throws SailException {<a name="line.136"></a>
<span class="sourceLineNo">137</span>                                <a name="line.137"></a>
<span class="sourceLineNo">138</span>                /* think about it: the federation connection should remain open until the federation is shutdown. we<a name="line.138"></a>
<span class="sourceLineNo">139</span>                 * use a singleton connection!!<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>        @Override<a name="line.143"></a>
<span class="sourceLineNo">144</span>        protected void commitInternal() throws SailException {<a name="line.144"></a>
<span class="sourceLineNo">145</span>                throw new UnsupportedOperationException("Writing not supported to a federation: the federation is readonly.");<a name="line.145"></a>
<span class="sourceLineNo">146</span>        }<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span><a name="line.148"></a>
<span class="sourceLineNo">149</span>        @Override<a name="line.149"></a>
<span class="sourceLineNo">150</span>        protected CloseableIteration&lt;? extends Resource, SailException&gt; getContextIDsInternal() throws SailException {<a name="line.150"></a>
<span class="sourceLineNo">151</span>                <a name="line.151"></a>
<span class="sourceLineNo">152</span>                final WorkerUnionBase&lt;Resource&gt; union = new SynchronousWorkerUnion&lt;Resource&gt;(new QueryInfo("getContextIDsInternal", QueryType.UNKNOWN));    <a name="line.152"></a>
<span class="sourceLineNo">153</span>                <a name="line.153"></a>
<span class="sourceLineNo">154</span>                for (final Endpoint e : federation.getMembers()) {<a name="line.154"></a>
<span class="sourceLineNo">155</span>                        union.addTask( new ParallelTask&lt;Resource&gt;() {<a name="line.155"></a>
<span class="sourceLineNo">156</span>                                @Override<a name="line.156"></a>
<span class="sourceLineNo">157</span>                                public CloseableIteration&lt;Resource, QueryEvaluationException&gt; performTask()       throws Exception {<a name="line.157"></a>
<span class="sourceLineNo">158</span>                                        return new RepositoryExceptionConvertingIteration&lt;Resource&gt;(e.getConn().getContextIDs());<a name="line.158"></a>
<span class="sourceLineNo">159</span>                                }                               <a name="line.159"></a>
<span class="sourceLineNo">160</span>                                @Override<a name="line.160"></a>
<span class="sourceLineNo">161</span>                                public ParallelExecutor&lt;Resource&gt; getControl() {<a name="line.161"></a>
<span class="sourceLineNo">162</span>                                        return union;<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>                <a name="line.166"></a>
<span class="sourceLineNo">167</span>                // execute the union in a separate thread<a name="line.167"></a>
<span class="sourceLineNo">168</span>                FederationManager.getInstance().getExecutor().execute(union);<a name="line.168"></a>
<span class="sourceLineNo">169</span>                <a name="line.169"></a>
<span class="sourceLineNo">170</span>                return new DistinctIteration&lt;Resource, SailException&gt;( new ExceptionConvertingIteration&lt;Resource, SailException&gt;(union) {<a name="line.170"></a>
<span class="sourceLineNo">171</span>                        @Override<a name="line.171"></a>
<span class="sourceLineNo">172</span>                        protected SailException convert(Exception e) {<a name="line.172"></a>
<span class="sourceLineNo">173</span>                                return new SailException(e);<a name="line.173"></a>
<span class="sourceLineNo">174</span>                        }                       <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>        @Override<a name="line.178"></a>
<span class="sourceLineNo">179</span>        protected String getNamespaceInternal(String prefix) throws SailException {<a name="line.179"></a>
<span class="sourceLineNo">180</span>                throw new UnsupportedOperationException("Operation is not yet supported.");<a name="line.180"></a>
<span class="sourceLineNo">181</span>        }<a name="line.181"></a>
<span class="sourceLineNo">182</span><a name="line.182"></a>
<span class="sourceLineNo">183</span>        @Override<a name="line.183"></a>
<span class="sourceLineNo">184</span>        protected CloseableIteration&lt;? extends Namespace, SailException&gt; getNamespacesInternal()<a name="line.184"></a>
<span class="sourceLineNo">185</span>                        throws SailException {<a name="line.185"></a>
<span class="sourceLineNo">186</span>                throw new UnsupportedOperationException("Operation is not yet supported.");             <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>        @Override<a name="line.189"></a>
<span class="sourceLineNo">190</span>        protected CloseableIteration&lt;? extends Statement, SailException&gt; getStatementsInternal(<a name="line.190"></a>
<span class="sourceLineNo">191</span>                        Resource subj, URI pred, Value obj, final boolean includeInferred,<a name="line.191"></a>
<span class="sourceLineNo">192</span>                        final Resource... contexts) throws SailException {<a name="line.192"></a>
<span class="sourceLineNo">193</span>                        <a name="line.193"></a>
<span class="sourceLineNo">194</span>                try {<a name="line.194"></a>
<span class="sourceLineNo">195</span>                        FederationEvalStrategy strategy = FederationManager.getInstance().getStrategy();<a name="line.195"></a>
<span class="sourceLineNo">196</span>                        QueryInfo queryInfo = new QueryInfo(subj, pred, obj);<a name="line.196"></a>
<span class="sourceLineNo">197</span>                        FederationManager.getMonitoringService().monitorQuery(queryInfo);<a name="line.197"></a>
<span class="sourceLineNo">198</span>                        CloseableIteration&lt;Statement, QueryEvaluationException&gt; res = strategy.getStatements(queryInfo, subj, pred, obj, contexts);<a name="line.198"></a>
<span class="sourceLineNo">199</span>                        return new ExceptionConvertingIteration&lt;Statement, SailException&gt;(res) {<a name="line.199"></a>
<span class="sourceLineNo">200</span>                                @Override<a name="line.200"></a>
<span class="sourceLineNo">201</span>                                protected SailException convert(Exception e) {<a name="line.201"></a>
<span class="sourceLineNo">202</span>                                        return new SailException(e);<a name="line.202"></a>
<span class="sourceLineNo">203</span>                                }<a name="line.203"></a>
<span class="sourceLineNo">204</span>                        };                      <a name="line.204"></a>
<span class="sourceLineNo">205</span>                } catch (RuntimeException e) {<a name="line.205"></a>
<span class="sourceLineNo">206</span>                        throw e;<a name="line.206"></a>
<span class="sourceLineNo">207</span>                } catch (Exception e) {<a name="line.207"></a>
<span class="sourceLineNo">208</span>                        throw new SailException(e);<a name="line.208"></a>
<span class="sourceLineNo">209</span>                }<a name="line.209"></a>
<span class="sourceLineNo">210</span>        }<a name="line.210"></a>
<span class="sourceLineNo">211</span><a name="line.211"></a>
<span class="sourceLineNo">212</span>        @Override<a name="line.212"></a>
<span class="sourceLineNo">213</span>        protected void addStatementInternal(Resource subj, URI pred, Value obj,<a name="line.213"></a>
<span class="sourceLineNo">214</span>                        Resource... contexts) throws SailException {<a name="line.214"></a>
<span class="sourceLineNo">215</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");                  <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>        @Override<a name="line.218"></a>
<span class="sourceLineNo">219</span>        protected void removeNamespaceInternal(String prefix) throws SailException {<a name="line.219"></a>
<span class="sourceLineNo">220</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");  <a name="line.220"></a>
<span class="sourceLineNo">221</span>        }<a name="line.221"></a>
<span class="sourceLineNo">222</span><a name="line.222"></a>
<span class="sourceLineNo">223</span>        @Override<a name="line.223"></a>
<span class="sourceLineNo">224</span>        protected void removeStatementsInternal(Resource subj, URI pred, Value obj,<a name="line.224"></a>
<span class="sourceLineNo">225</span>                        Resource... contexts) throws SailException {<a name="line.225"></a>
<span class="sourceLineNo">226</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");  <a name="line.226"></a>
<span class="sourceLineNo">227</span>        }<a name="line.227"></a>
<span class="sourceLineNo">228</span><a name="line.228"></a>
<span class="sourceLineNo">229</span>        @Override<a name="line.229"></a>
<span class="sourceLineNo">230</span>        protected void rollbackInternal() throws SailException {<a name="line.230"></a>
<span class="sourceLineNo">231</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");  <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>        @Override<a name="line.234"></a>
<span class="sourceLineNo">235</span>        protected void setNamespaceInternal(String prefix, String name) throws SailException {<a name="line.235"></a>
<span class="sourceLineNo">236</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");  <a name="line.236"></a>
<span class="sourceLineNo">237</span>        }<a name="line.237"></a>
<span class="sourceLineNo">238</span><a name="line.238"></a>
<span class="sourceLineNo">239</span>        @Override<a name="line.239"></a>
<span class="sourceLineNo">240</span>        protected long sizeInternal(Resource... contexts) throws SailException {<a name="line.240"></a>
<span class="sourceLineNo">241</span>                if (contexts!=null &amp;&amp; contexts.length&gt;0)<a name="line.241"></a>
<span class="sourceLineNo">242</span>                        throw new UnsupportedOperationException("Context handling for size() not supported");<a name="line.242"></a>
<span class="sourceLineNo">243</span>                long size = 0;<a name="line.243"></a>
<span class="sourceLineNo">244</span>                List&lt;String&gt; errorEndpoints = new ArrayList&lt;String&gt;();<a name="line.244"></a>
<span class="sourceLineNo">245</span>                for (Endpoint e : federation.getMembers()) {<a name="line.245"></a>
<span class="sourceLineNo">246</span>                        try     {<a name="line.246"></a>
<span class="sourceLineNo">247</span>                                size += e.size();<a name="line.247"></a>
<span class="sourceLineNo">248</span>                        } catch (RepositoryException e1){<a name="line.248"></a>
<span class="sourceLineNo">249</span>                                errorEndpoints.add(e.getId());<a name="line.249"></a>
<span class="sourceLineNo">250</span>                        }<a name="line.250"></a>
<span class="sourceLineNo">251</span>                }<a name="line.251"></a>
<span class="sourceLineNo">252</span>                if (errorEndpoints.size()&gt;0)<a name="line.252"></a>
<span class="sourceLineNo">253</span>                        throw new SailException("Could not determine size for members " + errorEndpoints.toString() + <a name="line.253"></a>
<span class="sourceLineNo">254</span>                                        "(Supported for NativeStore and RemoteRepository only). Computed size: " +size);<a name="line.254"></a>
<span class="sourceLineNo">255</span>                return size;<a name="line.255"></a>
<span class="sourceLineNo">256</span>        }<a name="line.256"></a>
<span class="sourceLineNo">257</span><a name="line.257"></a>
<span class="sourceLineNo">258</span>        @Override<a name="line.258"></a>
<span class="sourceLineNo">259</span>        protected void startTransactionInternal() throws SailException {<a name="line.259"></a>
<span class="sourceLineNo">260</span>                throw new UnsupportedOperationException("Not supported. the federation is readonly.");  <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>        private static String getOriginalQueryString(BindingSet b) {<a name="line.263"></a>
<span class="sourceLineNo">264</span>                if (b==null)<a name="line.264"></a>
<span class="sourceLineNo">265</span>                        return null;<a name="line.265"></a>
<span class="sourceLineNo">266</span>                Value q = b.getValue(FedXSailRepositoryConnection.BINDING_ORIGINAL_QUERY);<a name="line.266"></a>
<span class="sourceLineNo">267</span>                if (q!=null)<a name="line.267"></a>
<span class="sourceLineNo">268</span>                        return q.stringValue();<a name="line.268"></a>
<span class="sourceLineNo">269</span>                return null;<a name="line.269"></a>
<span class="sourceLineNo">270</span>        }<a name="line.270"></a>
<span class="sourceLineNo">271</span>        <a name="line.271"></a>
<span class="sourceLineNo">272</span>        private static QueryType getOriginalQueryType(BindingSet b) {<a name="line.272"></a>
<span class="sourceLineNo">273</span>                if (b==null)<a name="line.273"></a>
<span class="sourceLineNo">274</span>                        return null;<a name="line.274"></a>
<span class="sourceLineNo">275</span>                Value q = b.getValue(FedXSailRepositoryConnection.BINDING_ORIGINAL_QUERY_TYPE);<a name="line.275"></a>
<span class="sourceLineNo">276</span>                if (q!=null)<a name="line.276"></a>
<span class="sourceLineNo">277</span>                        return QueryType.valueOf(q.stringValue());<a name="line.277"></a>
<span class="sourceLineNo">278</span>                return null;<a name="line.278"></a>
<span class="sourceLineNo">279</span>        }<a name="line.279"></a>
<span class="sourceLineNo">280</span><a name="line.280"></a>
<span class="sourceLineNo">281</span>        <a name="line.281"></a>
<span class="sourceLineNo">282</span>        /**<a name="line.282"></a>
<span class="sourceLineNo">283</span>         * A default implementation for SailBase. This implementation has no <a name="line.283"></a>
<span class="sourceLineNo">284</span>         * further use, however it is needed for the constructor call.<a name="line.284"></a>
<span class="sourceLineNo">285</span>         * <a name="line.285"></a>
<span class="sourceLineNo">286</span>         * @author as<a name="line.286"></a>
<span class="sourceLineNo">287</span>         *<a name="line.287"></a>
<span class="sourceLineNo">288</span>         */<a name="line.288"></a>
<span class="sourceLineNo">289</span>        protected static class SailBaseDefaultImpl extends SailBase {<a name="line.289"></a>
<span class="sourceLineNo">290</span><a name="line.290"></a>
<span class="sourceLineNo">291</span>                @Override<a name="line.291"></a>
<span class="sourceLineNo">292</span>                protected SailConnection getConnectionInternal() throws SailException {<a name="line.292"></a>
<span class="sourceLineNo">293</span>                        return null;<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>                @Override<a name="line.296"></a>
<span class="sourceLineNo">297</span>                protected void shutDownInternal() throws SailException {<a name="line.297"></a>
<span class="sourceLineNo">298</span>                }<a name="line.298"></a>
<span class="sourceLineNo">299</span><a name="line.299"></a>
<span class="sourceLineNo">300</span>                @Override<a name="line.300"></a>
<span class="sourceLineNo">301</span>                public ValueFactory getValueFactory() {<a name="line.301"></a>
<span class="sourceLineNo">302</span>                        return null;<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>                @Override<a name="line.305"></a>
<span class="sourceLineNo">306</span>                public boolean isWritable() throws SailException {<a name="line.306"></a>
<span class="sourceLineNo">307</span>                        return false;<a name="line.307"></a>
<span class="sourceLineNo">308</span>                }       <a name="line.308"></a>
<span class="sourceLineNo">309</span>                <a name="line.309"></a>
<span class="sourceLineNo">310</span>                @Override<a name="line.310"></a>
<span class="sourceLineNo">311</span>                protected void connectionClosed(SailConnection connection) {<a name="line.311"></a>
<span class="sourceLineNo">312</span>                        // we do not need this in FedX<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><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>




























































</pre>
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