SPIN in Five Slides
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SPIN is a vocabulary that represents SPARQL queries and constraints as RDF triples. This allows SPARQL queries to be stored and shared on the semantic web. SPIN can be used to define SPARQL constraints, rules, functions and reusable query templates. Storing SPARQL queries as RDF triples provides benefits like referential integrity, managing namespaces centrally, and facilitating the easy sharing of queries on the semantic web.
![SPIN is an RDF Syntax for SPARQLSPIN provides a vocabulary to represent SPARQL queries as RDF triples.BenefitsStores SPARQL queries together with modelEasy to share on the semantic webReferential integrity (true resource references)Namespaces are managed once, not for every query# Width and height must be equalASKWHERE { ?thisss:width ?width . ?thisss:height ?height . FILTER (?width != ?height) .}[ a sp:Ask ; rdfs:comment "Width and height must be equal"^^xsd:string ; sp:where ([ sp:object _:b1 ; sp:predicatess:width ; sp:subjectspin:_this ] [ sp:object _:b2 ; sp:predicatess:height ; sp:subjectspin:_this ] [ a sp:Filter ; sp:expression [ a sp:ne ; sp:arg1 _:b1 ; sp:arg2 _:b2 ] ]) ] .](https://image.slidesharecdn.com/spin-5-slides-100923173141-phpapp02/85/SPIN-in-Five-Slides-2-320.jpg)
SPIN in Five Slides
- 1. SPIN in Five Slideshttp://spinrdf.orgHolger Knublauch, TopQuadrant [email protected] file: http://topbraid.org/examples/spinsquare.ttlOpen Source API: http://topbraid.org/spin/api/
- 2. SPIN is an RDF Syntax for SPARQLSPIN provides a vocabulary to represent SPARQL queries as RDF triples.BenefitsStores SPARQL queries together with modelEasy to share on the semantic webReferential integrity (true resource references)Namespaces are managed once, not for every query# Width and height must be equalASKWHERE { ?thisss:width ?width . ?thisss:height ?height . FILTER (?width != ?height) .}[ a sp:Ask ; rdfs:comment "Width and height must be equal"^^xsd:string ; sp:where ([ sp:object _:b1 ; sp:predicatess:width ; sp:subjectspin:_this ] [ sp:object _:b2 ; sp:predicatess:height ; sp:subjectspin:_this ] [ a sp:Filter ; sp:expression [ a sp:ne ; sp:arg1 _:b1 ; sp:arg2 _:b2 ] ]) ] .
- 3. SPIN is a SPARQL Constraint LanguageThe property spin:constraint can be used to link a class with SPARQL queries that formalize invariants for the members of that class.BenefitsNatural object-oriented way of modelingSPARQL is very expressive Constraints can be natively executed by SPARQL engines of the databaseEasy to combine with other SPARQL constraint bases like SKOS SPIN
- 4. SPIN is a SPARQL Rules LanguageThe property spin:rulecan be used to link a class with SPARQL CONSTRUCT queries that define inference rules for the members of the classBenefitsNatural object-oriented way of modelingSPARQL is very expressive Rules can be natively executed by SPARQL engines of the databaseEasy to combine with other SPARQL rule bases like OWL RL
- 5. SPIN can define SPARQL Functionsspin:Function can be used to define new SPARQL functions that use other SPARQL queries as their bodies.BenefitsCan be used to modularize and extend SPARQLFully declarative and web friendly: functions are stored in RDFGreatly extend the expressivity of SPARQL (recursion etc)Simple form of backward chaining, computing sub-queries on demandCONSTRUCT{ ?thisss:area ?area .}WHERE { LET (?area := ss:computeArea(?this)) .}
- 6. SPIN can store reusable SPARQL queriesspin:Templatecan be used to wrap SPARQL queries into reusable building blocks so that they can be instantiated with argumentsBenefitsSupports object-oriented reuse of modeling patternsDefines domain-specific languagesEasy to fill in the blanks by people with no SPARQL expertise