ARQ : Jena SPARQL System ======================== Apache Jena is an effort undergoing incubation at The Apache Software Foundation (ASF), sponsored by the Incubator PMC. Incubation is required of all newly accepted projects until a further review indicates that the infrastructure, communications, and decision making process have stabilized in a manner consistent with other successful ASF projects. While incubation status is not necessarily a reflection of the completeness or stability of the code, it does indicate that the project has yet to be fully endorsed by the ASF. Website: http://incubator.apache.org/jena/documentation/query/ Old ARQ website: http://openjena.org/ARQ ARQ is a complete implementation of SPARQL that can query any Jena model or graph, including ones stored in databases. Download -------- Also available via SVN: https://svn.apache.org/repos/asf/incubator/jena/Jena2/ARQ/ Maven: GroupId: org.apache.jena ArtifactId: jena-arq Development repository: https://repository.apache.org/content/repositories/snapshots/org/apache/jena/ Old releases: Mirrored to http://repo1.maven.org/ http://openjena.org/repo http://sourceforge.net/project/showfiles.php?group_id=40417&package_id=143808 See below of maven repository contents. Online demos and services ------------------------- http://www.sparql.org/ including a SPARQL validator http://www.sparql.org/validator.html Documentation ------------- http://incubator.apache.org/jena/documentation/query/index.html Installation ------------ The apache-jena distribution includes ARQ and all it's dependencies. It also includes scripts to run the command line tools. www.apache.org/dist/incubator/jena Unpack zip : it unpacks into a directory, including the version number. Set environment variable ARQROOT (or JENAROOT) to the path of this direrctory. Maven Distribution ------------------ The maven repository contains the following files (for version VER) jena-arq-VER.jar ARQ jar jena-arq-VER-javadoc.jar Javadoc jena-arq-VER-sources.jar Sources jena-arq-VER-tests.jar ARQ testing code jena-arq-VER-test-sources.jar Sourecs for test code jena-arq-VER-tests.zip Datafiles for tests, and test scripts. jena-arq-VER.pom ARQ POM jena-arq-VER.zip The complete distribution file (if available) jena-arq-VER-source-release.zip Complete copy of the codebase at the release. To run tests, you will need 'jena-arq-VER.jar', 'jena-arq-VER-tests.jar' and all dependences and to unpack 'jena-arq-VER-tests.zip' to get the "testing" data directory and test scripts. Or download the distribution 'jena-arq-VER.zip'. Running from the command line ----------------------------- Some bash and bat scripts are provided to try out SPARQL queries. In the apache-jena distribution, set JENAROOT. export JENAROOT=$PWD Second, ensure all scripts are executable chmod u+x $JENAROOT/bin/* Command line applications: sparql -- Run a SPARQL query. A wrapper around 'query'. arq -- Run an ARQ query. A wrapper around 'query'. query -- Run a query. qparse -- Parse a query qtest -- Run tests rset -- Read and write result sets (RDF, XML, JSON, text (out only)) For the 'query' command, files ending .rq are assumed to be SPARQL queries and files ending .arq are ARQ queries, unless the syntax is given explicitly. Unknown files are assumed to be SPARQL queries. sparql --data --query query sparql --data 'Query string' Default output is a text table for SELECT queries, an RDF model for DESCRIBE and CONSTRUCT. Run the script with no argument to get a usage message. Running commands as Java ------------------------ Set the classpath to "$JENAROOT/lib/*" (Linux) or "$JENAROOT\lib\*;" (Windows). The arq command line application is: java -cp ... arq.query .... ARQ.Net ------- ARQ has been run under IKVM (http://www.ikvm.net/), using IKVM to translate the bytecodes to IL and using IKVM as a JVM. Changes ------- See ChangeLog.txt Support and Questions --------------------- Comments and questions about ARQ to the Jena mailing list jena-users@incubator.apache.org General questions and comments on SPARQL to jena-dev or public-sparql-dev@w3.org Formal comments specific to the SPARQL query language, protocol or result set documents to: public-rdf-dawg-comments@w3.org