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ryotayamanakaryotayamanaka
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applied snake to pg
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‎contents/g2g-mapper.md

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@@ -43,12 +43,12 @@ Download example g2g file:
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...
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# Node mappings
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(mus:Musician {vis_label:nam, born:dat, hometown:twn, pageLength:len})
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(mus:musician {vis_label:nam, born:dat, hometown:twn, pageLength:len})
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?mus rdf:type foaf:Person, dbpedia-owl:MusicalArtist .
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# Edge mappings
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(mus1:Musician)-[:same_group {label:nam, hometown:twn, pageLength:len}]->(mus2:Musician)
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(mus1:musician)-[:same_group {label:nam, hometown:twn, page_length:len}]->(mus2:Musician)
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?grp a schema:MusicGroup ;
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...
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@@ -62,11 +62,11 @@ Check the output file:
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`musician.pg`
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"http://dbpedia.org/resource/Martin_Glover" :Musician vis_label:"Martin Glover"
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"http://dbpedia.org/resource/Per_Wiberg" :Musician vis_label:"Per Wiberg" hometown:Stockholm
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"http://dbpedia.org/resource/Tex_Perkins" :Musician vis_label:"Tex Perkins"
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"http://dbpedia.org/resource/Michelle_DaRosa" :Musician vis_label:"Michelle DaRosa"
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"http://dbpedia.org/resource/Raúl_Sánchez_(musician)" :Musician vis_label:"Raúl Sánchez (musician)" hometown:"Valencia, Spain"
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"http://dbpedia.org/resource/Martin_Glover" :musician vis_label:"Martin Glover"
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"http://dbpedia.org/resource/Per_Wiberg" :musician vis_label:"Per Wiberg" hometown:Stockholm
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"http://dbpedia.org/resource/Tex_Perkins" :musician vis_label:"Tex Perkins"
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"http://dbpedia.org/resource/Michelle_DaRosa" :musician vis_label:"Michelle DaRosa"
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"http://dbpedia.org/resource/Raúl_Sánchez_(musician)" :musician vis_label:"Raúl Sánchez (musician)" hometown:"Valencia, Spain"
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...
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"http://dbpedia.org/resource/Jin_Tielin" -> "http://dbpedia.org/resource/Zu_Hai" :influenced
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"http://dbpedia.org/resource/George_Lam" -> "http://dbpedia.org/resource/Eason_Chan" :influenced

‎contents/g2gml.md

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Mapping: `mini-01.g2g`
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PREFIX : <http://example.org/>
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(p:Person) <-- PG node is defined
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(p:person) <-- PG node is defined
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?p a :Person .
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Output: `mini-01.pg`
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"http://example.org/person1" :"Person"
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"http://example.org/person1" :person
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### RDF datatype property > PG node property
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Mapping: `mini-02.g2g`
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PREFIX : <http://example.org/>
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(p:Person {age:a}) <-- PG node property is defined
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(p:person {age:a}) <-- PG node property is defined
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?p a :Person .
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?p :age ?a .
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Output: `mini-02.pg`
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"http://example.org/person1" :"Person" "age":30
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"http://example.org/person1" :person age:30
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### RDF object property > PG edge
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Mapping: `mini-03.g2g`
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PREFIX : <http://example.org/>
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(p:Person)
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(p:person)
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?p a :Person .
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(p1:Person)-[:follows]->(p2:Person) <-- PG edge is defined
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(p1:person)-[:follows]->(p2:person) <-- PG edge is defined
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?p1 :follows ?p2 .
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Output: `mini-03.pg`
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"http://example.org/person1" :"Person"
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"http://example.org/person2" :"Person"
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"http://example.org/person1" -> "http://example.org/person2" :follows
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"http://example.org/person1" :person
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"http://example.org/person2" :person
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"http://example.org/person1" -> "http://example.org/person2" :follows
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### RDF resource > PG edge
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Mapping: `mini-04.g2g`
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PREFIX : <http://example.org/>
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(p:Person)
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(p:person)
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?p a :Person .
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(p1:Person)-[:follow]->(p2:Person) <-- PG edge is defined
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(p1:person)-[:follow]->(p2:person) <-- PG edge is defined
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?f :follower ?p1 ;
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:followed ?p2 .
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Output: `mini-04.pg`
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"http://example.org/person1" :"Person"
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"http://example.org/person2" :"Person"
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"http://example.org/person1" "http://example.org/person2" :"follow"
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"http://example.org/person1" :person
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"http://example.org/person2" :person
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"http://example.org/person1" "http://example.org/person2" :follow
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### RDF datatype property > PG edge property
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Mapping: `mini-05.g2g`
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PREFIX : <http://example.org/>
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(p:Person)
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(p:person)
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?p a :Person .
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(p1:Person)-[:follow {since:s}]->(p2:Person) <-- PG edge is defined
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(p1:person)-[:follows {since:s}]->(p2:person) <-- PG edge is defined
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?f :follower ?p1 ;
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:followed ?p2 ;
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:since ?s .
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Output: `mini-05.pg`
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"http://example.org/person1" :"Person"
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"http://example.org/person2" :"Person"
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"http://example.org/person1" "http://example.org/person2" :"follow" "since":2017
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"http://example.org/person1" :person
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"http://example.org/person2" :person
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"http://example.org/person1" "http://example.org/person2" :follow since:2017
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## Actual Example
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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# Node mappings
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(mus:Musician {vis_label:nam, born:dat, hometown:twn, pageLength:len})
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(mus:musician {vis_label:nam, born:dat, hometown:twn, page_length:len})
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?mus rdf:type foaf:Person, dbpedia-owl:MusicalArtist .
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?mus rdfs:label ?nam .
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FILTER(lang(?nam) = "en") .
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OPTIONAL { ?mus dbpedia-owl:wikiPageLength ?len }
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# Edge mappings
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(mus1:Musician)-[:same_group {label:nam, hometown:twn, pageLength:len}]->(mus2:Musician)
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(mus1:musician)-[:same_group {label:nam, hometown:twn, page_length:len}]->(mus2:musician)
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?grp a schema:MusicGroup.
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{ ?grp dbpedia-owl:bandMember ?mus1 , ?mus2. } UNION
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{ ?grp dbpedia-owl:formerBandMember ?mus1 , ?mus2. }
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OPTIONAL { ?grp dbpedia-owl:hometown / rdfs:label ?twn. FILTER(lang(?twn) = "en"). }
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OPTIONAL { ?grp dbpedia-owl:wikiPageLength ?len }
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(mus1:Musician)-[:influenced]->(mus2:Musician)
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(mus1:musician)-[:influenced]->(mus2:musician)
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?mus1 dbpedia-owl:influenced ?mus2 .

‎contents/get-started.md

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To understand how G2GML works quickly, please visit the sandbox.
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* [http://g2g.fun](http://g2g.fun)
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* [http://purl.org/g2gml](http://purl.org/g2gml)
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Some usage samples are provided.
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Notice that in order to use the sandbox effectively, knowledge about RDF and SPARQL are strongly recommended.
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## Command Line Usage
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### Installation
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Set an alias to run a docker container:
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`mini-05.pg`
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"http://example.org/person1" :person
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"http://example.org/person2" :person
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"http://example.org/person1" -> "http://example.org/person2" :follows since:2017
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"http://example.org/person1" :person
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"http://example.org/person2" :person
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"http://example.org/person1" -> "http://example.org/person2" :follows since:2017
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For further details please refer to:
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For further details please refer to
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* [G2GML](https://g2gml.readthedocs.io/en/latest/contents/g2gml.html): Description of the mapping language.
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* [G2G Mapper](https://g2gml.readthedocs.io/en/latest/contents/g2g-mapper.html): Usage of the command line tool.
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‎contents/reference.md

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PREFIX dbpedia-owl: <http://dbpedia.org/ontology/>
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PREFIX foaf: <http://xmlns.com/foaf/0.1/>
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# Node mapping
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(mus:Musician {vis_label:nam, born:dat, hometown:twn}) # PG Pattern
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(mus:musician {vis_label:nam, born:dat, hometown:twn}) # PG Pattern
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?mus rdf:type foaf:Person, dbpedia-owl:MusicalArtist . # RDF Pattern
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?mus rdfs:label ?nam .
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OPTIONAL { ?mus prop:born ?dat }
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OPTIONAL { ?mus dbpedia-owl:hometown / rdfs:label ?twn }
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# Edge mapping
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(mus1:Musician)-[:same_group {label:nam, length:len}]->(mus2:Musician) # PG Pattern
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(mus1:musician)-[:same_group {label:nam, length:len}]->(mus2:musician) # PG Pattern
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?grp a schema:MusicGroup ; # RDF Pattern
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dbpedia-owl:bandMember ?mus1 , ?mus2 .
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FILTER(?mus1 != ?mus2)

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