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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.evaluation;<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.EmptyIteration;<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>import info.aduna.iteration.Iterations;<a name="line.23"></a>
<span class="sourceLineNo">024</span><a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.openrdf.model.Resource;<a name="line.25"></a>
<span class="sourceLineNo">026</span>import org.openrdf.model.Statement;<a name="line.26"></a>
<span class="sourceLineNo">027</span>import org.openrdf.model.URI;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import org.openrdf.model.Value;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import org.openrdf.query.BindingSet;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import org.openrdf.query.BooleanQuery;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import org.openrdf.query.MalformedQueryException;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import org.openrdf.query.QueryEvaluationException;<a name="line.32"></a>
<span class="sourceLineNo">033</span>import org.openrdf.query.QueryLanguage;<a name="line.33"></a>
<span class="sourceLineNo">034</span>import org.openrdf.query.TupleQuery;<a name="line.34"></a>
<span class="sourceLineNo">035</span>import org.openrdf.query.TupleQueryResult;<a name="line.35"></a>
<span class="sourceLineNo">036</span>import org.openrdf.query.algebra.StatementPattern;<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.algebra.Var;<a name="line.38"></a>
<span class="sourceLineNo">039</span>import org.openrdf.query.impl.EmptyBindingSet;<a name="line.39"></a>
<span class="sourceLineNo">040</span>import org.openrdf.repository.RepositoryConnection;<a name="line.40"></a>
<span class="sourceLineNo">041</span>import org.openrdf.repository.RepositoryException;<a name="line.41"></a>
<span class="sourceLineNo">042</span>import org.openrdf.repository.RepositoryResult;<a name="line.42"></a>
<span class="sourceLineNo">043</span><a name="line.43"></a>
<span class="sourceLineNo">044</span>import com.fluidops.fedx.FederationManager;<a name="line.44"></a>
<span class="sourceLineNo">045</span>import com.fluidops.fedx.algebra.ExclusiveGroup;<a name="line.45"></a>
<span class="sourceLineNo">046</span>import com.fluidops.fedx.algebra.FilterValueExpr;<a name="line.46"></a>
<span class="sourceLineNo">047</span>import com.fluidops.fedx.evaluation.iterator.FilteringInsertBindingsIteration;<a name="line.47"></a>
<span class="sourceLineNo">048</span>import com.fluidops.fedx.evaluation.iterator.FilteringIteration;<a name="line.48"></a>
<span class="sourceLineNo">049</span>import com.fluidops.fedx.evaluation.iterator.InsertBindingsIteration;<a name="line.49"></a>
<span class="sourceLineNo">050</span>import com.fluidops.fedx.exception.ExceptionUtil;<a name="line.50"></a>
<span class="sourceLineNo">051</span>import com.fluidops.fedx.structures.Endpoint;<a name="line.51"></a>
<span class="sourceLineNo">052</span>import com.fluidops.fedx.structures.SparqlEndpointConfiguration;<a name="line.52"></a>
<span class="sourceLineNo">053</span>import com.fluidops.fedx.util.QueryStringUtil;<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>/**<a name="line.57"></a>
<span class="sourceLineNo">058</span> * A triple source to be used for (remote) SPARQL endpoints.&lt;p&gt;<a name="line.58"></a>
<span class="sourceLineNo">059</span> * <a name="line.59"></a>
<span class="sourceLineNo">060</span> * This triple source supports the {@link SparqlEndpointConfiguration} for<a name="line.60"></a>
<span class="sourceLineNo">061</span> * defining whether ASK queries are to be used for source selection.<a name="line.61"></a>
<span class="sourceLineNo">062</span> * <a name="line.62"></a>
<span class="sourceLineNo">063</span> * @author Andreas Schwarte<a name="line.63"></a>
<span class="sourceLineNo">064</span> *<a name="line.64"></a>
<span class="sourceLineNo">065</span> */<a name="line.65"></a>
<span class="sourceLineNo">066</span>public class SparqlTripleSource extends TripleSourceBase implements TripleSource {<a name="line.66"></a>
<span class="sourceLineNo">067</span><a name="line.67"></a>
<span class="sourceLineNo">068</span>        <a name="line.68"></a>
<span class="sourceLineNo">069</span>        private boolean useASKQueries = true;<a name="line.69"></a>
<span class="sourceLineNo">070</span>        <a name="line.70"></a>
<span class="sourceLineNo">071</span>        SparqlTripleSource(Endpoint endpoint) {<a name="line.71"></a>
<span class="sourceLineNo">072</span>                super(FederationManager.getMonitoringService(), endpoint);<a name="line.72"></a>
<span class="sourceLineNo">073</span>                if (endpoint.getEndpointConfiguration() instanceof SparqlEndpointConfiguration) {<a name="line.73"></a>
<span class="sourceLineNo">074</span>                        SparqlEndpointConfiguration c = (SparqlEndpointConfiguration) endpoint.getEndpointConfiguration();<a name="line.74"></a>
<span class="sourceLineNo">075</span>                        this.useASKQueries = c.supportsASKQueries();<a name="line.75"></a>
<span class="sourceLineNo">076</span>                }                       <a name="line.76"></a>
<span class="sourceLineNo">077</span>        }<a name="line.77"></a>
<span class="sourceLineNo">078</span>        <a name="line.78"></a>
<span class="sourceLineNo">079</span>        @Override<a name="line.79"></a>
<span class="sourceLineNo">080</span>        public CloseableIteration&lt;BindingSet, QueryEvaluationException&gt; getStatements(<a name="line.80"></a>
<span class="sourceLineNo">081</span>                        String preparedQuery, RepositoryConnection conn, BindingSet bindings, FilterValueExpr filterExpr)<a name="line.81"></a>
<span class="sourceLineNo">082</span>                        throws RepositoryException, MalformedQueryException,<a name="line.82"></a>
<span class="sourceLineNo">083</span>                        QueryEvaluationException {<a name="line.83"></a>
<span class="sourceLineNo">084</span>                <a name="line.84"></a>
<span class="sourceLineNo">085</span>                TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, preparedQuery, null);<a name="line.85"></a>
<span class="sourceLineNo">086</span>                disableInference(query);<a name="line.86"></a>
<span class="sourceLineNo">087</span>                <a name="line.87"></a>
<span class="sourceLineNo">088</span>                CloseableIteration&lt;BindingSet, QueryEvaluationException&gt; res=null;<a name="line.88"></a>
<span class="sourceLineNo">089</span>                try {                   <a name="line.89"></a>
<span class="sourceLineNo">090</span>                        <a name="line.90"></a>
<span class="sourceLineNo">091</span>                        // evaluate the query<a name="line.91"></a>
<span class="sourceLineNo">092</span>                        monitorRemoteRequest();<a name="line.92"></a>
<span class="sourceLineNo">093</span>                        res = query.evaluate();<a name="line.93"></a>
<span class="sourceLineNo">094</span>                        <a name="line.94"></a>
<span class="sourceLineNo">095</span>                        // apply filter and/or insert original bindings<a name="line.95"></a>
<span class="sourceLineNo">096</span>                        if (filterExpr!=null) {<a name="line.96"></a>
<span class="sourceLineNo">097</span>                                if (bindings.size()&gt;0) <a name="line.97"></a>
<span class="sourceLineNo">098</span>                                        res = new FilteringInsertBindingsIteration(filterExpr, bindings, res);<a name="line.98"></a>
<span class="sourceLineNo">099</span>                                else<a name="line.99"></a>
<span class="sourceLineNo">100</span>                                        res = new FilteringIteration(filterExpr, res);<a name="line.100"></a>
<span class="sourceLineNo">101</span>                                if (!res.hasNext()) {<a name="line.101"></a>
<span class="sourceLineNo">102</span>                                        Iterations.closeCloseable(res);<a name="line.102"></a>
<span class="sourceLineNo">103</span>                                        return new EmptyIteration&lt;BindingSet, QueryEvaluationException&gt;();<a name="line.103"></a>
<span class="sourceLineNo">104</span>                                }<a name="line.104"></a>
<span class="sourceLineNo">105</span>                        } else if (bindings.size()&gt;0) {<a name="line.105"></a>
<span class="sourceLineNo">106</span>                                res = new InsertBindingsIteration(res, bindings);<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>                        return res;<a name="line.109"></a>
<span class="sourceLineNo">110</span>                        <a name="line.110"></a>
<span class="sourceLineNo">111</span>                } catch (QueryEvaluationException ex) {<a name="line.111"></a>
<span class="sourceLineNo">112</span>                        Iterations.closeCloseable(res);<a name="line.112"></a>
<span class="sourceLineNo">113</span>                        throw ExceptionUtil.traceExceptionSourceAndRepair(conn, ex, "Subquery: " + preparedQuery);                      <a name="line.113"></a>
<span class="sourceLineNo">114</span>                }<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>        @Override<a name="line.117"></a>
<span class="sourceLineNo">118</span>        public CloseableIteration&lt;BindingSet, QueryEvaluationException&gt; getStatements(<a name="line.118"></a>
<span class="sourceLineNo">119</span>                        StatementPattern stmt, RepositoryConnection conn,<a name="line.119"></a>
<span class="sourceLineNo">120</span>                        BindingSet bindings, FilterValueExpr filterExpr)<a name="line.120"></a>
<span class="sourceLineNo">121</span>                        throws RepositoryException, MalformedQueryException,<a name="line.121"></a>
<span class="sourceLineNo">122</span>                        QueryEvaluationException  {<a name="line.122"></a>
<span class="sourceLineNo">123</span>                <a name="line.123"></a>
<span class="sourceLineNo">124</span>                throw new RuntimeException("NOT YET IMPLEMENTED.");<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>        @Override<a name="line.127"></a>
<span class="sourceLineNo">128</span>        public boolean hasStatements(RepositoryConnection conn, Resource subj,<a name="line.128"></a>
<span class="sourceLineNo">129</span>                        URI pred, Value obj, Resource... contexts)<a name="line.129"></a>
<span class="sourceLineNo">130</span>                        throws RepositoryException {<a name="line.130"></a>
<span class="sourceLineNo">131</span>                <a name="line.131"></a>
<span class="sourceLineNo">132</span>                if (!useASKQueries) {<a name="line.132"></a>
<span class="sourceLineNo">133</span>                        StatementPattern st = new StatementPattern(new Var("s", subj), new Var("p", pred), new Var("o", obj));<a name="line.133"></a>
<span class="sourceLineNo">134</span>                        try {<a name="line.134"></a>
<span class="sourceLineNo">135</span>                                return hasStatements(st, conn, EmptyBindingSet.getInstance());<a name="line.135"></a>
<span class="sourceLineNo">136</span>                        } catch (Exception e) {<a name="line.136"></a>
<span class="sourceLineNo">137</span>                                throw new RepositoryException(e);<a name="line.137"></a>
<span class="sourceLineNo">138</span>                        }<a name="line.138"></a>
<span class="sourceLineNo">139</span>                }               <a name="line.139"></a>
<span class="sourceLineNo">140</span>                return super.hasStatements(conn, subj, pred, obj, contexts);<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>        public boolean hasStatements(StatementPattern stmt, RepositoryConnection conn,<a name="line.144"></a>
<span class="sourceLineNo">145</span>                        BindingSet bindings) throws RepositoryException,<a name="line.145"></a>
<span class="sourceLineNo">146</span>                        MalformedQueryException, QueryEvaluationException {<a name="line.146"></a>
<span class="sourceLineNo">147</span><a name="line.147"></a>
<span class="sourceLineNo">148</span>                // decide whether to use ASK queries or a SELECT query<a name="line.148"></a>
<span class="sourceLineNo">149</span>                if (useASKQueries) {<a name="line.149"></a>
<span class="sourceLineNo">150</span>                        /* remote boolean query */<a name="line.150"></a>
<span class="sourceLineNo">151</span>                        String queryString = QueryStringUtil.askQueryString(stmt, bindings);<a name="line.151"></a>
<span class="sourceLineNo">152</span>                        BooleanQuery query = conn.prepareBooleanQuery(QueryLanguage.SPARQL, queryString, null);<a name="line.152"></a>
<span class="sourceLineNo">153</span>                        disableInference(query);<a name="line.153"></a>
<span class="sourceLineNo">154</span>                        <a name="line.154"></a>
<span class="sourceLineNo">155</span>                        try {<a name="line.155"></a>
<span class="sourceLineNo">156</span>                                monitorRemoteRequest();<a name="line.156"></a>
<span class="sourceLineNo">157</span>                                boolean hasStatements = query.evaluate();<a name="line.157"></a>
<span class="sourceLineNo">158</span>                                return hasStatements;<a name="line.158"></a>
<span class="sourceLineNo">159</span>                        } catch (QueryEvaluationException ex) {<a name="line.159"></a>
<span class="sourceLineNo">160</span>                                throw ExceptionUtil.traceExceptionSourceAndRepair(conn, ex, "Subquery: " + queryString);                        <a name="line.160"></a>
<span class="sourceLineNo">161</span>                        }<a name="line.161"></a>
<span class="sourceLineNo">162</span>                        <a name="line.162"></a>
<span class="sourceLineNo">163</span>                } else {<a name="line.163"></a>
<span class="sourceLineNo">164</span>                        /* remote select limit 1 query */<a name="line.164"></a>
<span class="sourceLineNo">165</span>                        String queryString = QueryStringUtil.selectQueryStringLimit1(stmt, bindings);<a name="line.165"></a>
<span class="sourceLineNo">166</span>                        TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, queryString);<a name="line.166"></a>
<span class="sourceLineNo">167</span>                        disableInference(query);<a name="line.167"></a>
<span class="sourceLineNo">168</span>                        <a name="line.168"></a>
<span class="sourceLineNo">169</span>                        TupleQueryResult qRes = null;<a name="line.169"></a>
<span class="sourceLineNo">170</span>                        try {<a name="line.170"></a>
<span class="sourceLineNo">171</span>                                monitorRemoteRequest();<a name="line.171"></a>
<span class="sourceLineNo">172</span>                                qRes = query.evaluate();<a name="line.172"></a>
<span class="sourceLineNo">173</span>                                boolean hasStatements = qRes.hasNext();<a name="line.173"></a>
<span class="sourceLineNo">174</span>                                return hasStatements;<a name="line.174"></a>
<span class="sourceLineNo">175</span>                        } catch (QueryEvaluationException ex) {<a name="line.175"></a>
<span class="sourceLineNo">176</span>                                throw ExceptionUtil.traceExceptionSourceAndRepair(conn, ex, "Subquery: " + queryString);                        <a name="line.176"></a>
<span class="sourceLineNo">177</span>                        } finally {<a name="line.177"></a>
<span class="sourceLineNo">178</span>                                if (qRes!=null)<a name="line.178"></a>
<span class="sourceLineNo">179</span>                                        qRes.close();<a name="line.179"></a>
<span class="sourceLineNo">180</span>                        }<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>        }<a name="line.183"></a>
<span class="sourceLineNo">184</span>        <a name="line.184"></a>
<span class="sourceLineNo">185</span>        @Override<a name="line.185"></a>
<span class="sourceLineNo">186</span>        public boolean hasStatements(ExclusiveGroup group,<a name="line.186"></a>
<span class="sourceLineNo">187</span>                        RepositoryConnection conn, BindingSet bindings)<a name="line.187"></a>
<span class="sourceLineNo">188</span>                        throws RepositoryException, MalformedQueryException,<a name="line.188"></a>
<span class="sourceLineNo">189</span>                        QueryEvaluationException {<a name="line.189"></a>
<span class="sourceLineNo">190</span>                <a name="line.190"></a>
<span class="sourceLineNo">191</span>                if (!useASKQueries) {<a name="line.191"></a>
<span class="sourceLineNo">192</span>                        <a name="line.192"></a>
<span class="sourceLineNo">193</span>                        /* remote select limit 1 query */<a name="line.193"></a>
<span class="sourceLineNo">194</span>                        String queryString = QueryStringUtil.selectQueryStringLimit1(group, bindings);<a name="line.194"></a>
<span class="sourceLineNo">195</span>                        TupleQuery query = conn.prepareTupleQuery(QueryLanguage.SPARQL, queryString);<a name="line.195"></a>
<span class="sourceLineNo">196</span>                        disableInference(query);<a name="line.196"></a>
<span class="sourceLineNo">197</span>                        <a name="line.197"></a>
<span class="sourceLineNo">198</span>                        TupleQueryResult qRes = null;<a name="line.198"></a>
<span class="sourceLineNo">199</span>                        try {<a name="line.199"></a>
<span class="sourceLineNo">200</span>                                monitorRemoteRequest();<a name="line.200"></a>
<span class="sourceLineNo">201</span>                                qRes = query.evaluate();<a name="line.201"></a>
<span class="sourceLineNo">202</span>                                boolean hasStatements = qRes.hasNext();<a name="line.202"></a>
<span class="sourceLineNo">203</span>                                return hasStatements;<a name="line.203"></a>
<span class="sourceLineNo">204</span>                        } catch (QueryEvaluationException ex) {<a name="line.204"></a>
<span class="sourceLineNo">205</span>                                throw ExceptionUtil.traceExceptionSourceAndRepair(conn, ex, "Subquery: " + queryString);                        <a name="line.205"></a>
<span class="sourceLineNo">206</span>                        } finally {<a name="line.206"></a>
<span class="sourceLineNo">207</span>                                if (qRes!=null)<a name="line.207"></a>
<span class="sourceLineNo">208</span>                                        qRes.close();<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>                // default handling: use ASK query<a name="line.212"></a>
<span class="sourceLineNo">213</span>                return super.hasStatements(group, conn, bindings);<a name="line.213"></a>
<span class="sourceLineNo">214</span>        }<a name="line.214"></a>
<span class="sourceLineNo">215</span><a name="line.215"></a>
<span class="sourceLineNo">216</span>        @Override<a name="line.216"></a>
<span class="sourceLineNo">217</span>        public boolean usePreparedQuery() {<a name="line.217"></a>
<span class="sourceLineNo">218</span>                return true;<a name="line.218"></a>
<span class="sourceLineNo">219</span>        }<a name="line.219"></a>
<span class="sourceLineNo">220</span><a name="line.220"></a>
<span class="sourceLineNo">221</span>        @Override<a name="line.221"></a>
<span class="sourceLineNo">222</span>        public CloseableIteration&lt;BindingSet, QueryEvaluationException&gt; getStatements(<a name="line.222"></a>
<span class="sourceLineNo">223</span>                        TupleExpr preparedQuery, RepositoryConnection conn,<a name="line.223"></a>
<span class="sourceLineNo">224</span>                        BindingSet bindings, FilterValueExpr filterExpr)<a name="line.224"></a>
<span class="sourceLineNo">225</span>                        throws RepositoryException, MalformedQueryException,<a name="line.225"></a>
<span class="sourceLineNo">226</span>                        QueryEvaluationException {<a name="line.226"></a>
<span class="sourceLineNo">227</span>                <a name="line.227"></a>
<span class="sourceLineNo">228</span>                throw new RuntimeException("NOT YET IMPLEMENTED.");<a name="line.228"></a>
<span class="sourceLineNo">229</span>        }<a name="line.229"></a>
<span class="sourceLineNo">230</span><a name="line.230"></a>
<span class="sourceLineNo">231</span>        @Override<a name="line.231"></a>
<span class="sourceLineNo">232</span>        public CloseableIteration&lt;Statement, QueryEvaluationException&gt; getStatements(<a name="line.232"></a>
<span class="sourceLineNo">233</span>                        RepositoryConnection conn, Resource subj, URI pred, Value obj,<a name="line.233"></a>
<span class="sourceLineNo">234</span>                        Resource... contexts) throws RepositoryException,<a name="line.234"></a>
<span class="sourceLineNo">235</span>                        MalformedQueryException, QueryEvaluationException<a name="line.235"></a>
<span class="sourceLineNo">236</span>        {<a name="line.236"></a>
<span class="sourceLineNo">237</span>                <a name="line.237"></a>
<span class="sourceLineNo">238</span>                // TODO add handling for contexts<a name="line.238"></a>
<span class="sourceLineNo">239</span>                monitorRemoteRequest();<a name="line.239"></a>
<span class="sourceLineNo">240</span>                RepositoryResult&lt;Statement&gt; repoResult = conn.getStatements(subj, pred, obj, true);<a name="line.240"></a>
<span class="sourceLineNo">241</span>                <a name="line.241"></a>
<span class="sourceLineNo">242</span>                return new ExceptionConvertingIteration&lt;Statement, QueryEvaluationException&gt;(repoResult) {<a name="line.242"></a>
<span class="sourceLineNo">243</span>                        @Override<a name="line.243"></a>
<span class="sourceLineNo">244</span>                        protected QueryEvaluationException convert(Exception arg0) {<a name="line.244"></a>
<span class="sourceLineNo">245</span>                                return new QueryEvaluationException(arg0);<a name="line.245"></a>
<span class="sourceLineNo">246</span>                        }<a name="line.246"></a>
<span class="sourceLineNo">247</span>                };              <a name="line.247"></a>
<span class="sourceLineNo">248</span>        }<a name="line.248"></a>
<span class="sourceLineNo">249</span><a name="line.249"></a>
<span class="sourceLineNo">250</span>}<a name="line.250"></a>




























































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