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<div class="subTitle">com.fluidops.fedx</div>
<h2 title="Class QueryManager" class="title">Class QueryManager</h2>
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<li>java.lang.Object</li>
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<pre>public class <a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.61">QueryManager</a>
extends java.lang.Object</pre>
<div class="block">QueryManager to manage queries. 
 
 a) Management of running queries (abort, finish)
 b) Factory to create queries</div>
<dl><dt><span class="strong">Author:</span></dt>
  <dd>Andreas Schwarte</dd></dl>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Field and Description</th>
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<td class="colFirst"><code>static org.apache.log4j.Logger</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#log">log</a></strong></code>&nbsp;</td>
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<th class="colFirst" scope="col">Modifier and Type</th>
<th class="colLast" scope="col">Method and Description</th>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#abortQuery(com.fluidops.fedx.structures.QueryInfo)">abortQuery</a></strong>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</code>&nbsp;</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#addPrefixDeclaration(java.lang.String, java.lang.String)">addPrefixDeclaration</a></strong>(java.lang.String&nbsp;prefix,
                                        java.lang.String&nbsp;namespace)</code>
<div class="block">Register a prefix declaration to be used during query evaluation.</div>
</td>
</tr>
<tr class="altColor">
<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#finishQuery(com.fluidops.fedx.structures.QueryInfo)">finishQuery</a></strong>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>int</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#getNumberOfRunningQueries()">getNumberOfRunningQueries</a></strong>()</code>&nbsp;</td>
</tr>
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<td class="colFirst"><code>static java.lang.String</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#getQueryPlan(java.lang.String)">getQueryPlan</a></strong>(java.lang.String&nbsp;queryString)</code>
<div class="block">Retrieve the query plan for the given query string.</div>
</td>
</tr>
<tr class="rowColor">
<td class="colFirst"><code>java.util.Set&lt;<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&gt;</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#getRunningQueries()">getRunningQueries</a></strong>()</code>&nbsp;</td>
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<td class="colFirst"><code>boolean</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#isRunning(com.fluidops.fedx.structures.QueryInfo)">isRunning</a></strong>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</code>&nbsp;</td>
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<tr class="rowColor">
<td class="colFirst"><code>static void</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#main(java.lang.String[])">main</a></strong>(java.lang.String[]&nbsp;args)</code>&nbsp;</td>
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<td class="colFirst"><code>static org.openrdf.query.BooleanQuery</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#prepareBooleanQuery(java.lang.String)">prepareBooleanQuery</a></strong>(java.lang.String&nbsp;queryString)</code>
<div class="block">Prepare a boolean query which uses the underlying federation to evaluate the query.</div>
</td>
</tr>
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<td class="colFirst"><code>static org.openrdf.query.GraphQuery</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#prepareGraphQuery(java.lang.String)">prepareGraphQuery</a></strong>(java.lang.String&nbsp;queryString)</code>
<div class="block">Prepare a tuple query which uses the underlying federation to evaluate the query.</div>
</td>
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<tr class="altColor">
<td class="colFirst"><code>static org.openrdf.query.Query</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#prepareQuery(java.lang.String)">prepareQuery</a></strong>(java.lang.String&nbsp;queryString)</code>
<div class="block">Prepare a <code>Query</code> which uses the underlying federation to evaluate the SPARQL query.</div>
</td>
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<tr class="rowColor">
<td class="colFirst"><code>static org.openrdf.query.TupleQuery</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#prepareTupleQuery(java.lang.String)">prepareTupleQuery</a></strong>(java.lang.String&nbsp;queryString)</code>
<div class="block">Prepare a tuple query which uses the underlying federation to evaluate the query.</div>
</td>
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<td class="colFirst"><code>void</code></td>
<td class="colLast"><code><strong><a href="../../../com/fluidops/fedx/QueryManager.html#registerQuery(com.fluidops.fedx.structures.QueryInfo)">registerQuery</a></strong>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</code>
<div class="block">Add the query to the set of running queries, queries are identified via a unique id</div>
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<h3>Methods inherited from class&nbsp;java.lang.Object</h3>
<code>equals, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait</code></li>
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<pre>public static&nbsp;org.apache.log4j.Logger <a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.64">log</a></pre>
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<h4>registerQuery</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.94">registerQuery</a>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</pre>
<div class="block">Add the query to the set of running queries, queries are identified via a unique id</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>queryInfo</code> - </dd></dl>
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<h4>getRunningQueries</h4>
<pre>public&nbsp;java.util.Set&lt;<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&gt;&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.99">getRunningQueries</a>()</pre>
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<pre>public&nbsp;int&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.103">getNumberOfRunningQueries</a>()</pre>
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<h4>abortQuery</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.107">abortQuery</a>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</pre>
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<h4>finishQuery</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.118">finishQuery</a>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</pre>
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<h4>isRunning</h4>
<pre>public&nbsp;boolean&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.122">isRunning</a>(<a href="../../../com/fluidops/fedx/structures/QueryInfo.html" title="class in com.fluidops.fedx.structures">QueryInfo</a>&nbsp;queryInfo)</pre>
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<h4>addPrefixDeclaration</h4>
<pre>public&nbsp;void&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.137">addPrefixDeclaration</a>(java.lang.String&nbsp;prefix,
                        java.lang.String&nbsp;namespace)</pre>
<div class="block">Register a prefix declaration to be used during query evaluation. If a 
 known prefix is used in a query, it is substituted in the parsing step.
 
 If prefix is null, the corresponding entry is removed.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>prefix</code> - a common prefix, e.g. rdf</dd><dd><code>namespace</code> - the corresponding namespace, e.g. "http://www.w3.org/1999/02/22-rdf-syntax-ns#"</dd></dl>
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<pre>public static&nbsp;org.openrdf.query.TupleQuery&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.157">prepareTupleQuery</a>(java.lang.String&nbsp;queryString)
                                                      throws org.openrdf.query.MalformedQueryException</pre>
<div class="block">Prepare a tuple query which uses the underlying federation to evaluate the query.<p>
 
 The queryString is modified to use the declared PREFIX declarations, see 
 <a href="../../../com/fluidops/fedx/Config.html#getPrefixDeclarations()"><code>Config.getPrefixDeclarations()</code></a> for details.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>queryString</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>org.openrdf.query.MalformedQueryException</code></dd></dl>
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<pre>public static&nbsp;org.openrdf.query.GraphQuery&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.175">prepareGraphQuery</a>(java.lang.String&nbsp;queryString)
                                                      throws org.openrdf.query.MalformedQueryException</pre>
<div class="block">Prepare a tuple query which uses the underlying federation to evaluate the query.<p>
 
 The queryString is modified to use the declared PREFIX declarations, see 
 <a href="../../../com/fluidops/fedx/Config.html#getPrefixDeclarations()"><code>Config.getPrefixDeclarations()</code></a> for details.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>queryString</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>org.openrdf.query.MalformedQueryException</code></dd></dl>
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<pre>public static&nbsp;org.openrdf.query.BooleanQuery&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.193">prepareBooleanQuery</a>(java.lang.String&nbsp;queryString)
                                                          throws org.openrdf.query.MalformedQueryException</pre>
<div class="block">Prepare a boolean query which uses the underlying federation to evaluate the query.<p>
 
 The queryString is modified to use the declared PREFIX declarations, see 
 <a href="../../../com/fluidops/fedx/Config.html#getPrefixDeclarations()"><code>Config.getPrefixDeclarations()</code></a> for details.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>queryString</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>org.openrdf.query.MalformedQueryException</code></dd></dl>
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<pre>public static&nbsp;org.openrdf.query.Query&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.215">prepareQuery</a>(java.lang.String&nbsp;queryString)
                                            throws org.openrdf.query.MalformedQueryException</pre>
<div class="block">Prepare a <code>Query</code> which uses the underlying federation to evaluate the SPARQL query.<p>
 
 The queryString is modified to use the declared PREFIX declarations, see 
 <a href="../../../com/fluidops/fedx/Config.html#getPrefixDeclarations()"><code>Config.getPrefixDeclarations()</code></a> for details.</div>
<dl><dt><span class="strong">Parameters:</span></dt><dd><code>queryString</code> - </dd>
<dt><span class="strong">Returns:</span></dt><dd></dd>
<dt><span class="strong">Throws:</span></dt>
<dd><code>org.openrdf.query.MalformedQueryException</code></dd></dl>
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<h4>getQueryPlan</h4>
<pre>public static&nbsp;java.lang.String&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.248">getQueryPlan</a>(java.lang.String&nbsp;queryString)
                                     throws org.openrdf.query.MalformedQueryException,
                                            <a href="../../../com/fluidops/fedx/exception/FedXException.html" title="class in com.fluidops.fedx.exception">FedXException</a></pre>
<div class="block">Retrieve the query plan for the given query string.</div>
<dl><dt><span class="strong">Throws:</span></dt>
<dd><code>org.openrdf.query.MalformedQueryException</code></dd>
<dd><code><a href="../../../com/fluidops/fedx/exception/FedXException.html" title="class in com.fluidops.fedx.exception">FedXException</a></code></dd></dl>
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<pre>public static&nbsp;void&nbsp;<a href="../../../src-html/com/fluidops/fedx/QueryManager.html#line.341">main</a>(java.lang.String[]&nbsp;args)</pre>
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