| ARQ : Jena SPARQL System |
| ======================== |
| |
| ARQ is a complete implementation of SPARQL that can query any Jena model |
| or graph, including ones stored in databases. |
| |
| Download |
| -------- |
| |
| See |
| https://jena.apache.org/download/ |
| |
| Also available via git: |
| https://git-wip-us.apache.org/repos/asf/jena.git |
| |
| Maven: |
| GroupId: org.apache.jena |
| ArtifactId: jena-arq |
| |
| Online demos and services |
| ------------------------- |
| |
| http://www.sparql.org/ |
| |
| including a SPARQL validator |
| http://www.sparql.org/validator.html |
| |
| Documentation |
| ------------- |
| |
| http://jena.apache.org/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. |
| |
| https://www.apache.org/dist/jena/ |
| |
| Unpack zip : it unpacks into a directory, including the version number. |
| |
| 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 |
| |
| 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 $JENAROOT/bin/* |
| |
| Command line applications: |
| |
| sparql -- Run a SPARQL query. A wrapper around 'query'. |
| arq -- Run an ARQ query. A wrapper around 'query'. |
| query -- Run a query. |
| qparse -- Parse a query |
| qtest -- Run tests |
| rset -- Read and write result sets (RDF, XML, JSON, text (out only)) |
| |
| For the 'query' command, files ending .rq are assumed to be SPARQL queries |
| and files ending .arq are ARQ queries, unless the syntax is given |
| explicitly. Unknown files are assumed to be SPARQL queries. |
| |
| sparql --data <some data file> --query query |
| sparql --data <some data file> 'Query string' |
| |
| Default output is a text table for SELECT queries, an RDF model for |
| DESCRIBE and CONSTRUCT. |
| |
| Run the script with no argument to get a usage message. |
| |
| Running commands as Java |
| ------------------------ |
| |
| Set the classpath to "$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. |
| |
| Support and Questions |
| --------------------- |
| |
| Comments and questions about ARQ to the Jena mailing list |
| users@jena.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 |
