52North/CSWLoDEnabler

Name: CSWLoDEnabler

Owner: 52°North Initiative for Geospatial Open Source Software GmbH

Description: Translator for OGC CSW to RDF / Linked Data.

Created: 2013-07-30 09:00:09.0

Updated: 2016-11-21 09:16:47.0

Pushed: 2015-07-15 08:01:40.0

Homepage:

Size: 397

Language: Java

GitHub Committers

User	Most Recent Commit	# Commits
Daniel Nüst	2015-04-08 07:21:14.0	23
Benjamin Pross	2015-07-15 08:01:40.0	37

Other Committers

User	Email	Most Recent Commit	# Commits
arne-broering	arneb@uni-muenster.de	2013-08-21 09:55:10.0	8

README

CSW to LOD Translator

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.

Features

• Supports CSW version x.x

Build Requirements

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)
• http://opldownload.s3.amazonaws.com/uda/virtuoso/rdfproviders/jena/210/virt_jena2.jar
• http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VOSDownload/virtjdbc4.jar
• 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 SUCCESS message 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”

Build, Configure, and Run

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.

Create configuration file

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.

Virtuoso

• 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

Pubby

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/.

bby: http://wifo5-03.informatik.uni-mannheim.de/pubby/
ample config file: http://wifo5-03.informatik.uni-mannheim.de/pubby/config.ttl

efix declarations to be used in RDF output
fix conf: <http://richard.cyganiak.de/2007/pubby/config.rdf#> .
fix meta: <http://example.org/metadata#> .
fix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
fix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
fix xsd: <http://www.w3.org/2001/XMLSchema#> .
fix owl: <http://www.w3.org/2002/07/owl#> .
fix dc: <http://purl.org/dc/elements/1.1/> .
fix dcterms: <http://purl.org/dc/terms/> .
fix foaf: <http://xmlns.com/foaf/0.1/> .
fix skos: <http://www.w3.org/2004/02/skos/core#> .
fix geo: <http://www.w3.org/2003/01/geo/wgs84_pos#> .
fix dbpedia: <http://localhost:8080/resource/> .
fix p: <http://localhost:8080/property/> .
fix yago: <http://localhost:8080/class/yago/> .
fix units: <http://dbpedia.org/units/> .
fix geonames: <http://www.geonames.org/ontology#> .
fix prv:      <http://purl.org/net/provenance/ns#> .
fix prvTypes: <http://purl.org/net/provenance/types#> .
fix doap:     <http://usefulinc.com/ns/doap#> .
fix void:     <http://rdfs.org/ns/void#> .
fix ir:       <http://www.ontologydesignpatterns.org/cp/owl/informationrealization.owl#> .
fix glues:  <http://glues.52north.org/> .
fix prov:   <http://www.w3.org/ns/prov#> .
fix vcard:  <http://www.w3.org/2001/vcard-rdf/3.0#> .

 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";
];
.

Finding issues

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.

Development

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 / Support

Contact: Daniel Nüst (d.nuest@52north.org)

For support questions, please contact the 52°North Metadata Community mailing list: http://52north.org/resources/mailing-list-and-forums/

License

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.