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Adds new sample queries, each in its own file
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‎README.md‎

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<http://localhost:3030/#/dataset/okh/query>
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You can now try your first [sample query](res/sample-query.txt)
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You can now try your first [sample query](res/sample-queries/list-projects.sparql)
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on the OKH data.

‎res/sample-queries/count-projects.sparql‎

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# SPDX-FileCopyrightText: 2025 Robin Vobruba <[email protected]>
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#
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# SPDX-License-Identifier: Unlicense
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX otrl: <http://purl.org/oseg/ontologies/OTRL#>
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# Count all projects (aka modules)
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SELECT (COUNT(*) AS ?count)
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WHERE {
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?proj a okh:Module
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}

‎res/sample-queries/list-bambulab-projects.sparql‎

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# SPDX-FileCopyrightText: 2025 Robin Vobruba <[email protected]>
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#
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# SPDX-License-Identifier: Unlicense
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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX otrl: <http://purl.org/oseg/ontologies/OTRL#>
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# First 100 projects with "bambulab" (case-insensitive)
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# in their name
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SELECT distinct ?proj ?label
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WHERE {
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?proj a okh:Module .
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?proj okh:name ?label .
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FILTER (CONTAINS(lcase(str(?label)), "bambulab"))
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}
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LIMIT 100

res/sample-query.txt renamed to res/sample-queries/list-projects.sparql

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PREFIX rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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#PREFIX bd: <http://www.bigdata.com/rdf#>
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX otrl: <http://purl.org/oseg/ontologies/OTRL#>
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PREFIX wf: <https://wikifactory.com/>
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PREFIX ap: <https://www.appropedia.org/>
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PREFIX wfs: <https://wikifactory.com/@shirako/>
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PREFIX loshdummymosha: <https://github.com/OPEN-NEXT/LOSH-dummy-MOSH-A/1.0.0#>
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PREFIX ohloom: <https://gitlab.com/OSEGermany/ohloom/1.0.0#>
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# All triples
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#SELECT ?subject ?predicate ?object
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#WHERE {
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# ?subject ?predicate ?object
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#}
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# All Projects type triples
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#SELECT ?subject ?predicate ?object
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#WHERE {
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# ?subject rdf:type okh:Module
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#}
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# All Projects names and their licenses
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#SELECT ?name ?license
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#WHERE {
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# ?subject rdf:type okh:Module ;
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# rdfs:label ?name ;
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# ods:license ?license
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#}
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SELECT (COUNT(*) AS ?count)
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SELECT ?name ?license
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WHERE {
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?proj a okh:Module
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?subject rdf:type okh:Module ;
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rdfs:label ?name ;
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ods:license ?license
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}
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LIMIT 100

‎res/sample-queries/one-projects-triples.sparql‎

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# SPDX-FileCopyrightText: 2025 Robin Vobruba <[email protected]>
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#
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# SPDX-License-Identifier: Unlicense
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX owl: <http://www.w3.org/2002/07/owl#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX otrl: <http://w3id.org/oseg/ont/otrl#>
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PREFIX spdxt: <http://spdx.org/rdf/terms#>
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PREFIX ap: <https://www.appropedia.org/>
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# All (direct) triples of a project (aka module)
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SELECT ?pred ?obj
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WHERE {
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<https://www.appropedia.org/40/Bamboo_demonstration_motor/project> ?pred ?obj
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}
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LIMIT 100

‎res/sample-queries/projects-licenses.sparql‎

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# SPDX-FileCopyrightText: 2025 Robin Vobruba <[email protected]>
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#
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# SPDX-License-Identifier: Unlicense
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX owl: <http://www.w3.org/2002/07/owl#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX otrl: <http://w3id.org/oseg/ont/otrl#>
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PREFIX spdxt: <http://spdx.org/rdf/terms#>
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SELECT ?license
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WHERE {
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?subj a okh:Module .
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?subj ods:license ?license
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}
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GROUP BY ?license
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LIMIT 100

‎res/sample-queries/projects-under-license.sparql‎

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# SPDX-FileCopyrightText: 2025 Robin Vobruba <[email protected]>
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#
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# SPDX-License-Identifier: Unlicense
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PREFIX ods: <http://w3id.org/oseg/ont/ods#>
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PREFIX okh: <http://w3id.org/oseg/ont/okh#>
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PREFIX owl: <http://www.w3.org/2002/07/owl#>
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PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX otrl: <http://w3id.org/oseg/ont/otrl#>
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PREFIX spdxt: <http://spdx.org/rdf/terms#>
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# All projects with a specific license
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SELECT ?subj ?name ?license
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WHERE {
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?subj a okh:Module .
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?subj okh:name ?name .
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?subj ods:license ?license .
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?subj ods:license spdxt:CC-BY-SA-3.0
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#?subj ods:license spdxt:CC-BY-SA-4.0
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#?subj ods:license spdxt:GPL-3.0-or-later
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#?subj ods:license spdxt:Unlicense
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#?subj ods:license spdxt:CC0-1.0
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#?subj ods:license spdxt:Apache-2.0
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}
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LIMIT 100

‎run/fill-db‎

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echo "for example:"
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echo "$jena_db_data_querier \\"
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echo " --loc \"$db_dir\" \\"
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echo " --query \"$res_dir/sample-query.txt\""
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echo " --query \"$res_dir/sample-queries/list-projects.sparql\""
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echo
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echo "Or start the Web interface for running SPARQL queries with:"
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echo "run/web-ui"

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