Replace canonical dcs ontology with a minimal version for LV2

Since most applications pay to keep these ontologies in memory, it is best to
keep them small.  This replaces the "canonical" dcs ontology with a minimal and
restricted version specifically written for the subset of the vocabulary that
LV2 uses (like the xsd ontology).

2 files changed, 41 insertions, 238 deletions

diff --git a/lv2/core/meta.ttl b/lv2/core/meta.ttl
index db98a4c..d85f539 100644
--- a/lv2/core/meta.ttl
+++ b/lv2/core/meta.ttl
@@ -44,6 +44,8 @@ THIS SOFTWARE IS PROVIDED "AS IS" AND THE AUTHOR DISCLAIMS ALL WARRANTIES WITH R
 				rdfs:label "Clean up and modernize Python support code."
 			] , [
 				rdfs:label "Remove archaic properties from foaf vocabulary."
+			] , [
+				rdfs:label "Replace canonical dcs ontology with a minimal version for LV2."
 			]
 		]
 	] , [
diff --git a/schemas.lv2/dcs.ttl b/schemas.lv2/dcs.ttl
index b961190..4c62ed9 100644
--- a/schemas.lv2/dcs.ttl
+++ b/schemas.lv2/dcs.ttl
@@ -1,266 +1,67 @@
-# This ontology.
-@prefix dcs:      <http://ontologi.es/doap-changeset#> .
+@prefix dcs: <http://ontologi.es/doap-changeset#> .
+@prefix dcterms: <http://purl.org/dc/terms/> .
+@prefix doap: <http://usefulinc.com/ns/doap#> .
+@prefix foaf: <http://xmlns.com/foaf/0.1/> .
+@prefix owl: <http://www.w3.org/2002/07/owl#> .
+@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
+@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
+@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
 
-# Related
-@prefix event:    <http://purl.org/NET/c4dm/event.owl#> .
-@prefix doap:     <http://usefulinc.com/ns/doap#> .
-@prefix dbug:     <http://ontologi.es/doap-bugs#> .
-
-# Stock imports.
-@prefix dct:      <http://purl.org/dc/terms/> .
-@prefix foaf:     <http://xmlns.com/foaf/0.1/> .
-@prefix owl:      <http://www.w3.org/2002/07/owl#> .
-@prefix rdf:      <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
-@prefix rdfs:     <http://www.w3.org/2000/01/rdf-schema#> .
-@prefix xsd:      <http://www.w3.org/2001/XMLSchema#> .
-
-## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ## ##
+<>
+	rdfs:comment "Minimal DOAP Change Sets vocabulary used by LV2." .
 
-<http://tobyinkster.co.uk/#i> a foaf:Person .
+<http://tobyinkster.co.uk/#i>
+	a foaf:Person .
 
 dcs:
 	a owl:Ontology ;
-	rdfs:label "DOAP Change Sets"@en ;
-	dct:description "An ontology that extends DOAP to describe changesets."@en ;
-	dct:created "2010-01-08"^^xsd:date ;
-	dct:issued "2010-01-08"^^xsd:date ;
-	dct:modified "2010-01-08"^^xsd:date ,
-		"2010-01-27"^^xsd:date ,
-		"2011-02-15"^^xsd:date , # dcs:Documentation, dcs:Packaging, dcs:SecurityFix, dcs:SecurityRegression
-		"2012-04-25"^^xsd:date , # dcs:thanks
-		"2012-06-20"^^xsd:date , # dcs:released-by
-		"2013-09-03"^^xsd:date , # dcs:Tests, dcs:BackCompat
-		"2015-01-15"^^xsd:date , # Syntax errors, add description
-		"2015-04-05"^^xsd:date ; # use dcterms, trim imports (drobilla, for LV2)
-	dct:creator <http://tobyinkster.co.uk/#i> .
-
-<>
-	a foaf:Document ;
-	foaf:primaryTopic dcs: .
-
-dcs:ChangeSet
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Change Set"@en ;
-	rdfs:comment "A collection of changes. Not necessarily disjoint with foaf:Document!"@en ;
-	rdfs:subClassOf rdf:Bag .
-
-dcs:ToDoList
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "To-Do List"@en ;
-	rdfs:comment "A collection of planned changes."@en ;
-	rdfs:subClassOf dcs:ChangeSet .
-
-dcs:WishList
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Wish List"@en ;
-	rdfs:comment "A collection of desired changes."@en ;
-	rdfs:subClassOf dcs:ChangeSet .
+	dcterms:contributor <http://drobilla.net/drobilla#me> ;
+	dcterms:created "2010-01-08"^^xsd:date ;
+	dcterms:creator <http://tobyinkster.co.uk/#i> ;
+	dcterms:description "An ontology that extends DOAP to describe changesets." ;
+	dcterms:modified "2022-07-07"^^xsd:date ;
+	rdfs:label "DOAP Change Sets" .
 
 dcs:Change
 	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Change"@en ;
-	rdfs:comment "A change to something. Use rdfs:label to briefly describe the change. Use rdfs:comment for additional information."@en .
-
-dcs:Addition
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Addition"@en ;
-	rdfs:comment "A change that added a new feature."@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:Removal
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Addition"@en ;
-	rdfs:comment "A change that removed a feature."@en ;
-	rdfs:subClassOf dcs:Change .
+	rdfs:comment "A change to something." ;
+	rdfs:label "Change" ;
+	rdfs:subClassOf [
+		a owl:Restriction ;
+		rdfs:comment "A change must have a plain literal label." ;
+		owl:onProperty rdfs:label ;
+		owl:someValuesFrom rdf:PlainLiteral
+	] .
 
-dcs:Bugfix
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Bugfix"@en ;
-	rdfs:comment "A change that fixed a problem with an existing feature."@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:Update
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Update"@en ;
-	rdfs:comment "A change that brought a feature into compliance with policy or other changes in the external world."@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:Regression
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Regression"@en ;
-	rdfs:comment "A change that caused a problem with an existing feature."@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:Documentation
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Documentation Change"@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:Packaging
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Packaging Change"@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:SecurityFix
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Security Fix"@en ;
-	rdfs:comment "A change that fixed or improved a security problem."@en ;
-	rdfs:subClassOf dcs:Change .
-
-dcs:SecurityRegression
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Security Regression"@en ;
-	rdfs:comment "A change that created or worsened a security problem."@en ;
-	rdfs:subClassOf dcs:Change , dcs:Regression .
-
-dcs:Tests
+dcs:ChangeSet
 	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Tests"@en ;
-	rdfs:comment "A change to the test suite."@en ;
-	rdfs:subClassOf dcs:Change.
+	rdfs:comment "A collection of changes." ;
+	rdfs:label "Change Set" ;
+	rdfs:subClassOf rdf:Bag .
 
-dcs:BackCompat
-	a owl:Class ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "Backwards Compatibility"@en ;
-	rdfs:comment "A change that breaks backwards compatibility, changing documented or tested behaviour."@en ;
-	rdfs:subClassOf dcs:Change.
+dcs:blame
+	a owl:ObjectProperty ;
+	rdfs:label "blame" ;
+	rdfs:subPropertyOf dcs:thanks .
 
 dcs:changeset
 	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "change set"@en ;
-	rdfs:comment "A change set may be associated with a particular software version in which those changes were released; or with an event which caused those changes."@en ;
+	rdfs:comment "The change set of a version." ;
 	rdfs:domain doap:Version ;
+	rdfs:label "change set" ;
 	rdfs:range dcs:ChangeSet .
 
-dcs:versus
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "versus"@en ;
-	rdfs:comment "The previous version or event which a changeset has changed from."@en ;
-	rdfs:domain dcs:ChangeSet ;
-	rdfs:range doap:Version .
-
 dcs:item
 	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "item"@en ;
-	rdfs:comment "A change within a change set."@en ;
+	rdfs:comment "A change in a change set." ;
 	rdfs:domain dcs:ChangeSet ;
+	rdfs:label "item" ;
 	rdfs:range dcs:Change ;
 	rdfs:subPropertyOf rdfs:member .
 
-dcs:file
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "file"@en ;
-	rdfs:comment "A file involved in the change."@en ;
-	rdfs:domain dcs:Change .
-
-dbug:Issue
-	a rdfs:Class ;
-	rdfs:label "Issue"@en .
-
-dcs:fixes
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "fixes"@en ;
-	rdfs:comment "A bug fixed by the change."@en ;
-	rdfs:domain dcs:Bugfix ;
-	rdfs:range dbug:Issue .
-
-dcs:implements
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "implements"@en ;
-	rdfs:domain dcs:Addition ;
-	rdfs:range doap:Specification .
-
-dcs:restores
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "restores"@en ;
-	rdfs:comment "An association between a regression and a later bugfix that fixes it."@en ;
-	rdfs:domain dcs:Bugfix ;
-	rdfs:range dcs:Regression .
-
-dcs:blame
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:subPropertyOf dcs:thanks ;
-	rdfs:label "blame"@en .
-
 dcs:thanks
 	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "thanks"@en ;
-	rdfs:comment "More general than dcs:blame - could be used e.g. to indicate who financially sponsored a new feature."@en ;
 	rdfs:domain dcs:Change ;
+	rdfs:label "thanks" ;
 	rdfs:range foaf:Agent .
 
-dcs:checkin
-	a owl:DatatypeProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "checkin"@en ;
-	rdfs:comment "The identifier used by the project's version control system that records when this change was made."@en ;
-	rdfs:domain dcs:Change ;
-	rdfs:range xsd:string .
-
-dcs:milestone
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "milestone"@en ;
-	rdfs:domain dcs:ChangeSet ;
-	rdfs:range doap:Version .
-
-dcs:tasks
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "tasks"@en ;
-	rdfs:domain foaf:Agent ;
-	rdfs:range dcs:ToDoList .
-
-dcs:wishes
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "wishes"@en ;
-	rdfs:domain foaf:Person ;
-	rdfs:range dcs:WishList .
-
-dcs:requires
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "requires"@en ;
-	rdfs:comment "Indicates that the subject Change cannot/could not be completed without the object Change."@en ;
-	rdfs:domain dcs:Change ;
-	rdfs:range dcs:Change .
-
-dcs:timescale
-	a owl:DatatypeProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "timescale"@en ;
-	rdfs:comment "Human-readable description of the approximate time a change/feature should be complete by."@en ;
-	rdfs:domain dcs:Change ;
-	rdfs:range xsd:string .
-
-dcs:released-by
-	a owl:ObjectProperty ;
-	rdfs:isDefinedBy dcs: ;
-	rdfs:label "released by"@en ;
-	rdfs:domain doap:Version ;
-	rdfs:range foaf:Person .