triple loader

1. What is that?

triple-loader provides command line tools and Clojure API for managing Eclipse RDF4J/Sesame repository. Moreover since version 0.1.15 this project provides external Clojure API. Both snapshots and releases - standard jars - are published only on Clojars. Stand-alone (uber) jars will be still published in GitHub.

Leiningen/Boot:

[adalab/triple-loader "0.2.3"]

1.1. Acknowledgements

The software development was supported by CHIST-ERA (Call 2013 – AMCE), with funding from EPSRC (Grant no. EP/M015661/1; AdaLab).

The AdaLab project web page can be found at: http://www.adalab-project.org/.

2. API Documentation

All API documentation is available at https://jgrzebyta.github.io/triple-loader/.

3. Command line tools

java -cp triple-loader-standalone.jar <command> <options>

Commands

rdf4j.loader

Loads data into triple store.

Options

–server URL, -s

Sesame SPARQL endpoint URL. Default: http://localhost:8080/rdf4j-server

–repositiry NAME, -r

Repository id. Default: test

–file FILE, -f

Data file path

–context IRI, -c

Context (graph name) of the dataset. If FILE’s format is context-aware (e.g. TriG) than this option is ignored.

–version, -V

Print version number

–help, -h

Help

Examples

Populate triple store at http://localhost:8090/rdf4j-server/test with data from two files.

java -cp triple-loader-standalone.jar rdf4j.loader -s http://localhost:8090/rdf4j-server/ -r test -f ~/database/data1.ttl -f ~/database/data2.ttl

rdf4j.sparql

Executes SPARQL query on data provided by file. The query is executed among different types of repository: `simple`, `lucene` and `native`

Options

–file FILE, -f

Data file path.

–query STRING, -q

Path to file with query or the query itself.

–formaT, -t

Format of SPARQL query resut. Option ‘-t help’ gives full list of supported formats. By default writers formats are sparql/tsv and trig for tuple query and graph query respectively.

–repository -r

Local repository settings. Possible options: simple, lucene, native.

–version, -v

Print version number.

–bind, -b

Accepts set of properties as SPARQL bindings. Given values are parsed to literal.

–help, -h

Help.

Examples

Process SPARQL request select * where {?s ?p ?o} limit 10 on data located in two files.

java -cp triple-loader-standalone.jar rdf4j.sparql -f ~/database/data1.ttl -f ~/database/data2.ttl -q "select * where {?s ?p ?o} limit 10"

Process SPARQL request from file ~/database/process.sparql on data located in two files.

java -cp triple-loader-standalone.jar rdf4j.sparql -f ~/database/data1.ttl -f ~/database/data2.ttl -q ~/database/process.sparql

Process SPARQL request from file ~/database/process.sparql on data located in two files and print results in sprarql/json format.

java -cp triple-loader-standalone.jar rdf4j.sparql -f ~/database/data1.ttl -f ~/database/data2.ttl -q ~/database/process.sparql -t sparql/json

Process SPARQL request with binding

java -cp triple-loader-standalone.jar rdf4j.sparql -f tests/resources/beet.rdf -t sparql/csv -q "select ?s ?country where {?s <file:/tmp2/beet-1.csvCountries> ?country}" -b "country=Poland"

rdf4j.dump

Creates remote repository dump file in TriG format. rdf4j.loader function is suitable for restoring triple.

Options

–help, -h

Help

–server URL, -s

RDF4J SPARQL endpoint URL, default http://localhost:8080/rdf4j-server

–repositiry NAME, -r

Repository id, default: test

–file FILE, -f

Data file path or standard output if not given

–version, -V

Display program version

Examples

Dump http://localhpost:8090/rdf4j-server/test repository to standard output.

java -cp triple-loader-standalone.jar rdf4j.dump -s http://localhpost:8090/rdf4j-server -r test

Dump http://localhpost:8090/rdf4j-server/test repository to /tmp/test-repo.trig file.

java -cp triple-loader-standalone.jar rdf4j.dump -s http://localhpost:8090/rdf4j-server -r test -f /tmp/test-repo.trig

rdf4j.convert

Converts RDF files among different formats. It supports following formats: ntriples, n3, turtle, rdfjson, rdfxml, trig, trix, nquads, jsonld and binary.

Options

–help, -h

Print this screen

–version, -V

Display version

–input FORMAT, -i

Input format. Available formats: ntriples, n3, turtle, rdfjson, rdfxml, trig, trix, nquads, jsonld, binary

–output FORMAT, -o

Output format. Available formats: ntriples, n3, turtle, rdfjson, rdfxml, trig, trix, nquads, jsonld, binary

Examples

Convert turtle file to rdfxml

java -cp triple-loader-standalone rdf4j.convert -i turtle -o rdfxml tests/resources/yeastract_raw.ttl

Convert turtle file to trig

java -cp triple-loader-standalone rdf4j.convert -i turtle -o trig tests/resources/yeastract_raw.ttl

4. Build server

• Travis CL

5. Contacts

To contact with me please use Issues interface.