Daniel Hernandez
0c1da570bb
Add namespace prefixes (rdfs, migrants, person, personp, work, workp, location, locationp) to query files. Use --prettify in Rake tasks so example files use abbreviated IRIs. Fix 2hop task to use graph-02.
40 lines
1 KiB
SPARQL
40 lines
1 KiB
SPARQL
PREFIX rdfs: <http://www.w3.org/2000/01/rdf-schema#>
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PREFIX migrants: <http://example.org/migrants/>
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PREFIX person: <http://example.org/migrants/person/>
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PREFIX personp: <http://example.org/migrants/person#>
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PREFIX work: <http://example.org/migrants/work/>
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PREFIX workp: <http://example.org/migrants/work#>
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PREFIX location: <http://example.org/migrants/location/>
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PREFIX locationp: <http://example.org/migrants/location#>
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CONSTRUCT {
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?s ?p ?o .
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}
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WHERE {
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{
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# Hop 0: Triples about Irene Abendroth (as subject)
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?s ?p ?o .
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FILTER(?s = person:AbeIre-00)
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}
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UNION
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{
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# Hop 1 (incoming): Triples about nodes referencing the anchor
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?s ?p ?o .
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?s ?ref person:AbeIre-00 .
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}
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UNION
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{
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# Hop 1 (outgoing): Triples about IRI nodes referenced by the anchor
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?s ?p ?o .
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person:AbeIre-00 ?ref ?s .
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FILTER(isIRI(?s))
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}
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UNION
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{
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# Hop 2: Triples about IRI nodes referenced by hop-1 nodes
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?s ?p ?o .
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?hop1 ?r1 person:AbeIre-00 .
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?hop1 ?r2 ?s .
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FILTER(isIRI(?s) && ?s != person:AbeIre-00)
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}
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}
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