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<h1 class="title">GeoSPARQL Assembler</h1>
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<p>Details of the GeoSPARQL support are provided on the <a href="index">GeoSPARQL page</a>.</p>
<p>The assembler for GeoSPARQL support is part of the <code>jena-geosparql</code> artifact and
must be on the Fuseki server classpath, along with its dependencies.</p>
<div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-xml" data-lang="xml"><span style="display:flex;"><span><span style="color:#008000;font-weight:bold">&lt;dependency&gt;</span>
</span></span><span style="display:flex;"><span> <span style="color:#008000;font-weight:bold">&lt;groupId&gt;</span>org.apache.jena<span style="color:#008000;font-weight:bold">&lt;/groupId&gt;</span>
</span></span><span style="display:flex;"><span> <span style="color:#008000;font-weight:bold">&lt;artifactId&gt;</span>jena-geosparql<span style="color:#008000;font-weight:bold">&lt;/artifactId&gt;</span>
</span></span><span style="display:flex;"><span> <span style="color:#008000;font-weight:bold">&lt;version&gt;</span>...<span style="color:#008000;font-weight:bold">&lt;/version&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#008000;font-weight:bold">&lt;/dependency&gt;</span>
</span></span></code></pre></div><p>or download the binary from the
<a href="https://repo1.maven.org/maven2/org/apache/jena/jena-geosparql/">Maven central repository org/apache/jena/jena-geosparql</a></p>
<p>The GeoSPARQL assembler can be used in a Fuseki configuration file.</p>
<p>This example is of a read-only:</p>
<div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-sparql" data-lang="sparql"><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">fuseki</span>: <span style="color:#a0a000">&lt;http://jena.apache.org/fuseki#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">rdf</span>: <span style="color:#a0a000">&lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">rdfs</span>: <span style="color:#a0a000">&lt;http://www.w3.org/2000/01/rdf-schema#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">tdb2</span>: <span style="color:#a0a000">&lt;http://jena.apache.org/2016/tdb#&gt;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">ja</span>: <span style="color:#a0a000">&lt;http://jena.hpl.hp.com/2005/11/Assembler#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">geosparql</span>: <span style="color:#a0a000">&lt;http://jena.apache.org/geosparql#&gt;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#service&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">Service</span>;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">name</span> <span style="color:#b44">&#34;geo&#34;</span>;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">endpoint</span> [ <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">operation</span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">query</span>; ] ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">dataset</span> <span style="color:#a0a000">&lt;#geo_ds&gt;</span> .
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#geo_ds&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">geosparql</span>:<span style="color:#008000;font-weight:bold">geosparqlDataset</span> ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">geosparql</span>:<span style="color:#008000;font-weight:bold">spatialIndexFile</span> <span style="color:#b44">&#34;DB/spatial.index&#34;</span>;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">geosparql</span>:<span style="color:#008000;font-weight:bold">dataset</span> <span style="color:#a0a000">&lt;#baseDataset&gt;</span> ;
</span></span><span style="display:flex;"><span> .
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#baseDataset&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">tdb2</span>:<span style="color:#008000;font-weight:bold">DatasetTDB2</span> ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">tdb2</span>:<span style="color:#008000;font-weight:bold">location</span> <span style="color:#b44">&#34;DB/&#34;</span> ;
</span></span><span style="display:flex;"><span> .
</span></span></code></pre></div><p>It is possible to run with a data file loaded into memory and
a spatial in-memory index:</p>
<div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-sparql" data-lang="sparql"><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">fuseki</span>: <span style="color:#a0a000">&lt;http://jena.apache.org/fuseki#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">rdf</span>: <span style="color:#a0a000">&lt;http://www.w3.org/1999/02/22-rdf-syntax-ns#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">rdfs</span>: <span style="color:#a0a000">&lt;http://www.w3.org/2000/01/rdf-schema#&gt;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">ja</span>: <span style="color:#a0a000">&lt;http://jena.hpl.hp.com/2005/11/Assembler#&gt;</span>
</span></span><span style="display:flex;"><span><span style="color:#a2f;font-weight:bold">PREFIX</span> <span style="color:#00f;font-weight:bold">geosparql</span>: <span style="color:#a0a000">&lt;http://jena.apache.org/geosparql#&gt;</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#service&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">Service</span>;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">name</span> <span style="color:#b44">&#34;ds&#34;</span>;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">endpoint</span> [ <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">operation</span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">query</span>; ] ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">fuseki</span>:<span style="color:#008000;font-weight:bold">dataset</span> <span style="color:#a0a000">&lt;#geo_ds&gt;</span> .
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#080;font-style:italic"># In-memory data and index.</span>
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#geo_ds&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">geosparql</span>:<span style="color:#008000;font-weight:bold">geosparqlDataset</span> ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">geosparql</span>:<span style="color:#008000;font-weight:bold">dataset</span> <span style="color:#a0a000">&lt;#baseDataset&gt;</span> .
</span></span><span style="display:flex;"><span>
</span></span><span style="display:flex;"><span><span style="color:#a0a000">&lt;#baseDataset&gt;</span> <span style="color:#00f;font-weight:bold">rdf</span>:<span style="color:#008000;font-weight:bold">type</span> <span style="color:#00f;font-weight:bold">ja</span>:<span style="color:#008000;font-weight:bold">MemoryDataset</span> ;
</span></span><span style="display:flex;"><span> <span style="color:#00f;font-weight:bold">ja</span>:<span style="color:#008000;font-weight:bold">data</span> <span style="color:#a0a000">&lt;file:geosparql_data.ttl&gt;</span> ;
</span></span><span style="display:flex;"><span> .
</span></span></code></pre></div><p>The full assembler properties with the default settings is:</p>
<div class="highlight"><pre tabindex="0" style="background-color:#f8f8f8;-moz-tab-size:4;-o-tab-size:4;tab-size:4;"><code class="language-turtle" data-lang="turtle"><span style="display:flex;"><span><span style="color:#b8860b">&lt;#geo_ds&gt;</span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">rdf:</span><span style="color:#008000;font-weight:bold">type</span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">GeosparqlDataset</span><span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#080;font-style:italic"># Build in-memory is absent.</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">spatialIndexFile</span><span style="color:#bbb"> </span><span style="color:#b44">&#34;spatial.index&#34;</span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#080;font-style:italic">## Default settings. See documentation for meanings.</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">inference</span><span style="color:#bbb"> </span>true<span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">queryRewrite</span><span style="color:#bbb"> </span>true<span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">indexEnabled</span><span style="color:#bbb"> </span>true<span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">applyDefaultGeometry</span><span style="color:#bbb"> </span>false<span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#080;font-style:italic"># 3 item lists: [Geometry Literal, Geometry Transform, Query Rewrite]</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">indexSizes</span><span style="color:#bbb"> </span><span style="color:#b44">&#34;-1,-1,-1&#34;</span><span style="color:#bbb"> </span>;<span style="color:#bbb"> </span><span style="color:#080;font-style:italic"># Default - unlimited.</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">indexExpires</span><span style="color:#bbb"> </span><span style="color:#b44">&#34;5000,5000,5000&#34;</span><span style="color:#bbb"> </span>;<span style="color:#bbb"> </span><span style="color:#080;font-style:italic"># Default - time in milliseconds.</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#080;font-style:italic">## Required setting - data over which GeoSPARQL is applied.</span><span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span><span style="color:#00f;font-weight:bold">geosparql:</span><span style="color:#008000;font-weight:bold">dataset</span><span style="color:#bbb"> </span><span style="color:#b8860b">&lt;#baseDataset&gt;</span><span style="color:#bbb"> </span>;<span style="color:#bbb">
</span></span></span><span style="display:flex;"><span><span style="color:#bbb"> </span>.<span style="color:#bbb">
</span></span></span></code></pre></div>
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