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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.union;<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><a name="line.21"></a>
<span class="sourceLineNo">022</span>import org.openrdf.query.BindingSet;<a name="line.22"></a>
<span class="sourceLineNo">023</span>import org.openrdf.query.QueryEvaluationException;<a name="line.23"></a>
<span class="sourceLineNo">024</span>import org.openrdf.query.algebra.TupleExpr;<a name="line.24"></a>
<span class="sourceLineNo">025</span>import org.openrdf.repository.RepositoryConnection;<a name="line.25"></a>
<span class="sourceLineNo">026</span><a name="line.26"></a>
<span class="sourceLineNo">027</span>import com.fluidops.fedx.EndpointManager;<a name="line.27"></a>
<span class="sourceLineNo">028</span>import com.fluidops.fedx.algebra.FilterValueExpr;<a name="line.28"></a>
<span class="sourceLineNo">029</span>import com.fluidops.fedx.evaluation.TripleSource;<a name="line.29"></a>
<span class="sourceLineNo">030</span>import com.fluidops.fedx.evaluation.concurrent.ParallelExecutor;<a name="line.30"></a>
<span class="sourceLineNo">031</span>import com.fluidops.fedx.evaluation.concurrent.ParallelTask;<a name="line.31"></a>
<span class="sourceLineNo">032</span>import com.fluidops.fedx.structures.Endpoint;<a name="line.32"></a>
<span class="sourceLineNo">033</span><a name="line.33"></a>
<span class="sourceLineNo">034</span>/**<a name="line.34"></a>
<span class="sourceLineNo">035</span> * A task implementation representing a prepared union, i.e. the prepared query is executed<a name="line.35"></a>
<span class="sourceLineNo">036</span> * on the provided triple source.<a name="line.36"></a>
<span class="sourceLineNo">037</span> * <a name="line.37"></a>
<span class="sourceLineNo">038</span> * @author Andreas Schwarte<a name="line.38"></a>
<span class="sourceLineNo">039</span> */<a name="line.39"></a>
<span class="sourceLineNo">040</span>public class ParallelPreparedAlgebraUnionTask implements ParallelTask&lt;BindingSet&gt; {<a name="line.40"></a>
<span class="sourceLineNo">041</span>        <a name="line.41"></a>
<span class="sourceLineNo">042</span>        protected final TripleSource tripleSource;<a name="line.42"></a>
<span class="sourceLineNo">043</span>        protected final RepositoryConnection conn;<a name="line.43"></a>
<span class="sourceLineNo">044</span>        protected final TupleExpr preparedQuery;<a name="line.44"></a>
<span class="sourceLineNo">045</span>        protected final BindingSet bindings;<a name="line.45"></a>
<span class="sourceLineNo">046</span>        protected final ParallelExecutor&lt;BindingSet&gt; unionControl;<a name="line.46"></a>
<span class="sourceLineNo">047</span>        protected final FilterValueExpr filterExpr;<a name="line.47"></a>
<span class="sourceLineNo">048</span>        <a name="line.48"></a>
<span class="sourceLineNo">049</span>        public ParallelPreparedAlgebraUnionTask(ParallelExecutor&lt;BindingSet&gt; unionControl, TupleExpr preparedQuery, TripleSource tripleSource, RepositoryConnection conn, BindingSet bindings, FilterValueExpr filterExpr) {<a name="line.49"></a>
<span class="sourceLineNo">050</span>                this.preparedQuery = preparedQuery;<a name="line.50"></a>
<span class="sourceLineNo">051</span>                this.bindings = bindings;<a name="line.51"></a>
<span class="sourceLineNo">052</span>                this.unionControl = unionControl;<a name="line.52"></a>
<span class="sourceLineNo">053</span>                this.tripleSource = tripleSource;<a name="line.53"></a>
<span class="sourceLineNo">054</span>                this.conn = conn;<a name="line.54"></a>
<span class="sourceLineNo">055</span>                this.filterExpr = filterExpr;<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>        @Override<a name="line.58"></a>
<span class="sourceLineNo">059</span>        public CloseableIteration&lt;BindingSet, QueryEvaluationException&gt; performTask() throws Exception {<a name="line.59"></a>
<span class="sourceLineNo">060</span>                return tripleSource.getStatements(preparedQuery, conn, bindings, filterExpr);<a name="line.60"></a>
<span class="sourceLineNo">061</span>        }<a name="line.61"></a>
<span class="sourceLineNo">062</span><a name="line.62"></a>
<span class="sourceLineNo">063</span><a name="line.63"></a>
<span class="sourceLineNo">064</span>        @Override<a name="line.64"></a>
<span class="sourceLineNo">065</span>        public ParallelExecutor&lt;BindingSet&gt; getControl() {<a name="line.65"></a>
<span class="sourceLineNo">066</span>                return unionControl;<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>        public String toString() {<a name="line.69"></a>
<span class="sourceLineNo">070</span>                Endpoint e = EndpointManager.getEndpointManager().getEndpoint(conn);<a name="line.70"></a>
<span class="sourceLineNo">071</span>                return this.getClass().getSimpleName() + " @" + e.getId() + ": " + preparedQuery.toString();<a name="line.71"></a>
<span class="sourceLineNo">072</span>        }<a name="line.72"></a>
<span class="sourceLineNo">073</span>}<a name="line.73"></a>




























































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