This project maps the entries of an OGC Catalog (CSW, http://www.opengeospatial.org/standards/cat) to Linked Open Data using Jena (https://jena.apache.org/) and inserts the results into a Virtuoso Triple Store (http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/). This software is developed in the project GLUES.
- Supports CSW version x.x
The project uses Maven (http://maven.apache.org/).
To make this work the following non-Maven libs need to be downloaded and installed to the local repository manually:
- Download the following files into a local directory (for details see http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/VOSDownload)
- Open a command line in the directory where the files are stored
- Run the following commands (see also: http://maven.apache.org/guides/mini/guide-3rd-party-jars-local.html). You should see a
BUILD SUCCESSmessage for both commands- mvn install:install-file "-Dfile=virt_jena2.jar" "-DgroupId=com.virtuoso" "-DartifactId=virt_jena2" "-Dversion=1.0.0" "-Dpackaging=jar"
- mvn install:install-file "-Dfile=virtjdbc4.jar" "-DgroupId=com.virtuoso" "-DartifactId=virtjdbc4" "-Dversion=1.0.0" "-Dpackaging=jar"
The project is best run by importing it into an Eclipse workspace. Command-line execution of the main class CSWLoDEnabler is possible but not documented yet.
Go to src/main/resources and create a copy of the file lod.properties.original under the name lod.properties. Open it and adjust the Virtuoso user and password.
- Install Virtuoso Open Source Edition > http://virtuoso.openlinksw.com/dataspace/doc/dav/wiki/Main/
- Configure the Virtuoso DBMS endpoint, e.g.
URL_VIRTUOSO_JDBC jdbc:virtuoso://localhost:1111
This is a pubby configuration file for using pubby with a Virtuoso running on the default port on localhost for the GLUES dataset, i.e. pubby is deployed at http://localhost:8080/glues-lod/.
# Pubby: http://wifo5-03.informatik.uni-mannheim.de/pubby/
# Example config file: http://wifo5-03.informatik.uni-mannheim.de/pubby/config.ttl
# Prefix declarations to be used in RDF output
@prefix conf: <http://richard.cyganiak.de/2007/pubby/config.rdf#> .
@prefix meta: <http://example.org/metadata#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .
@prefix skos: <http://www.w3.org/2004/02/skos/core#> .
@prefix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> .
@prefix dbpedia: <http://localhost:8080/resource/> .
@prefix p: <http://localhost:8080/property/> .
@prefix yago: <http://localhost:8080/class/yago/> .
@prefix units: <http://dbpedia.org/units/> .
@prefix geonames: <http://www.geonames.org/ontology#> .
@prefix prv: <http://purl.org/net/provenance/ns#> .
@prefix prvTypes: <http://purl.org/net/provenance/types#> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix void: <http://rdfs.org/ns/void#> .
@prefix ir: <http://www.ontologydesignpatterns.org/cp/owl/informationrealization.owl#> .
@prefix glues: <http://glues.52north.org/> .
@prefix prov: <http://www.w3.org/ns/prov#> .
@prefix vcard: <http://www.w3.org/2001/vcard-rdf/3.0#> .
<> a conf:Configuration;
conf:projectName "GLUES LOD";
conf:projectHomepage <http://nachhaltiges-landmanagement.de/en/scientific-coordination-glues/>;
conf:webBase <http://localhost:8080/glues-lod/>;#this will replace the URI_BASE (conf:datasetbase respectively) in the pubby browser
conf:usePrefixesFrom <>;
conf:defaultLanguage "en";
conf:indexResource <http://metadata.demo.52north.org/glues/resource/project/GLUES>;#reference to an entity including URI_BASE
conf:labelProperty rdfs:label, dc:title, foaf:name;
conf:commentProperty rdfs:comment, dc:description;
conf:imageProperty foaf:depiction;
conf:dataset [
conf:sparqlEndpoint <http://localhost:8890/sparql>;
#conf:sparqlDefaultGraph <http://metadata.demo.52north.or/glues-lod/2014-08-28A>;#must correspond to URI_GRAPH property of lod.properties
conf:datasetBase <http://metadata.demo.52north.org/glues>;#must correspond to URI_BASE property (including slashes)
conf:webResourcePrefix "";
conf:addSameAsStatements "true";
#conf:metadataTemplate "metadata.ttl";
];
.
To discover issues with data that is retrieved from a catalog, a specific log file /logs/csw2lod-issues.log exists that contains all warnings and errors that occured during each seperate execution. More detailed logging is in the other logging files in /logs.
Some development notes:
- We use GitHub issues for task management and a Waffle.io board: https://waffle.io/52North/CSWLoDEnabler
- Please use the 52°North code formatter in Eclipse: https://wiki.52north.org/bin/view/Documentation/WebHome#Software_Development
Contact: Daniel Nüst ([email protected])
For support questions, please contact the 52°North Metadata Community mailing list: http://52north.org/resources/mailing-list-and-forums/
This project is licenses under GNU General Public License, version 2.0. For details see the LICENSE file, for information about the used libraries see the NOTICE file.
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