# MIT License
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# Copyright (c) 2021 Markus Schröder, DFKI GmbH
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@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#>.
@prefix xsd: <http://www.w3.org/2001/XMLSchema#>.
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix owl: <http://www.w3.org/2002/07/owl#> .
@prefix rr: <http://www.w3.org/ns/r2rml#> .
@prefix csvw: <http://www.w3.org/ns/csvw#> .

@prefix : <http://www.dfki.uni-kl.de/~mschroeder/ld/ss> .
@prefix ss: <http://www.dfki.uni-kl.de/~mschroeder/ld/ss#> .

: a owl:Ontology ;
    dc:creator "Markus Schröder" ;
    dc:date "2021-02-10" ;
    dc:title "Spreadsheet Ontology" ;
    dc:description "This ontology contains the terminology to describe spreadsheets." .

ss:Workbook a rdfs:Class ;
    rdfs:label "Workbook" ;
    rdfs:comment "A workbook is a collection of one or more spreadsheets, also called worksheets, in a single file." .

ss:url a rdf:Property ;
    rdfs:label "URL" ;
    rdfs:comment "This link property gives the single URL of a workbook file where spreadsheets are held in." ;
    rdfs:domain ss:Workbook ;
    rdfs:range xsd:anyURI .

ss:sheetName a rdf:Property ;
    rdfs:label "Sheet Name" ;
    rdfs:comment "This property is used to refer to one sheet in a workbook by its name." ;
    rdfs:domain ss:Workbook ;
    rdfs:range xsd:string .

ss:range a rdf:Property ;
    rdfs:label "Range" ;
    rdfs:comment "This property is used to refer to a range of cells within a sheet. Usually, it consists of two cell addresses that are separated by a colon, for example 'B2:B10'." ;
    rdfs:domain ss:Workbook ;
    rdfs:range xsd:string ;
    rdfs:seeAlso ss:sheetName .

ss:address a rdf:Property ;
    rdfs:label "Address" ;
    rdfs:comment "This property is used by a cell to state where it is located in a sheet, for example 'A3'." ;
    rdfs:domain csvw:Cell ;
    rdfs:range xsd:string ;
    rdfs:seeAlso ss:range .

ss:javaScriptFilter a rdf:Property ;
    rdfs:label "JavaScript Filter" ;
    rdfs:comment "This property is used to filter selected cells in a sheet by using JavaScript code. If the code returns true, the cell is kept, otherwise discarded." ;
    rdfs:domain ss:Workbook ;
    rdfs:range xsd:string ;
    rdfs:seeAlso ss:range, ss:sheetName .

#== experimental features ==

ss:zip a rdf:Property ;
    rdfs:label "Zip" ;
    rdfs:comment "This property is used in a predicate-object map to express, if set to true, that predicates and objects are zipped together instead of using the cartesian product." ;
    rdfs:domain rr:PredicateObjectMap ;
    rdfs:range xsd:boolean .

ss:Graph a owl:Class ;
    rdfs:label "Graph" ;
    rdfs:comment "This class is another rr:termType. It means that the object returned from an rr:ObjectMap is an RDF graph serialized in turtle syntax." .

ss:SelectedObjects a owl:Class ;
    rdfs:label "Selected Objects" ;
    rdfs:comment "When the rr:termType ss:Graph is used, only selected objects should be mapped in the rr:ObjectMap. That is why the returned RDF graph has to contain a resource of type ss:SelectedObjects (usually a BlankNode) which points to objects with rr:object that should be used in the mapping." ;
    rdfs:seeAlso ss:Graph .