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| <h1 class="title">GeoSPARQL Assembler</h1> |
| |
| <p>Details of the GeoSPARQL support are proivded 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> |
| <pre><code><dependency> |
| <groupId>org.apache.jena</groupId> |
| <artifactId>jena-geosparql</artifactId> |
| <version>...</version> |
| </dependency> |
| </code></pre> |
| <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> |
| <pre><code>PREFIX fuseki: <http://jena.apache.org/fuseki#> |
| PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> |
| PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> |
| PREFIX tdb2: <http://jena.apache.org/2016/tdb#> |
| |
| PREFIX ja: <http://jena.hpl.hp.com/2005/11/Assembler#> |
| PREFIX geosparql: <http://jena.apache.org/geosparql#> |
| |
| <#service> rdf:type fuseki:Service; |
| fuseki:name "geo"; |
| fuseki:endpoint [ fuseki:operation fuseki:query; ] ; |
| fuseki:dataset <#geo_ds> . |
| |
| <#geo_ds> rdf:type geosparql:geosparqlDataset ; |
| geosparql:spatialIndexFile "DB/spatial.index"; |
| geosparql:dataset <#baseDataset> ; |
| . |
| |
| <#baseDataset> rdf:type tdb2:DatasetTDB2 ; |
| tdb2:location "DB/" ; |
| . |
| </code></pre><p>It is possible to run with a data file loaded into memory and |
| an spatial in-memory index:</p> |
| <pre><code>PREFIX fuseki: <http://jena.apache.org/fuseki#> |
| PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> |
| PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#> |
| |
| PREFIX ja: <http://jena.hpl.hp.com/2005/11/Assembler#> |
| PREFIX geosparql: <http://jena.apache.org/geosparql#> |
| |
| <#service> rdf:type fuseki:Service; |
| fuseki:name "ds"; |
| fuseki:endpoint [ fuseki:operation fuseki:query; ] ; |
| fuseki:dataset <#geo_ds> . |
| |
| # In-memory data and index. |
| |
| <#geo_ds> rdf:type geosparql:geosparqlDataset ; |
| geosparql:dataset <#baseDataset> . |
| |
| <#baseDataset> rdf:type ja:MemoryDataset ; |
| ja:data <file:geosparql_data.ttl> ; |
| . |
| </code></pre><p>The full assembler properties with the default settings is:</p> |
| <pre><code><#geo_ds> rdf:type geosparql:GeosparqlDataset ; |
| # Build in-memory is absent. |
| geosparql:spatialIndexFile "spatial.index"; |
| |
| ## Default settings. See documentation for meanings. |
| geosparql:inference true ; |
| geosparql:queryRewrite true ; |
| geosparql:indexEnabled true ; |
| geosparql:applyDefaultGeometry false ; |
| |
| # 3 item lists: [Geometry Literal, Geometry Transform, Query Rewrite] |
| geosparql:indexSizes "-1,-1,-1" ; # Default - unlimited. |
| geosparql:indexExpires "5000,5000,5000" ; # Default - time in milliseconds. |
| |
| ## Required setting - data over which GeoSPARQL is applied. |
| geosparql:dataset <#baseDataset> ; |
| . |
| </code></pre> |
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