# LV2 Host Info Extension
# Copyright (C) 2009 David Robillard <d@drobilla.net>
#
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@prefix hi:   <http://lv2plug.in/ns/ext/host-info#> .
@prefix lv2:  <http://lv2plug.in/ns/lv2core#> .
@prefix rdf:  <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .
@prefix owl:  <http://www.w3.org/2002/07/owl#> .
@prefix xsd:  <http://www.w3.org/2001/XMLSchema#> .
@prefix doap: <http://usefulinc.com/ns/doap#> .
@prefix foaf: <http://xmlns.com/foaf/0.1/> .

<http://drobilla.net/drobilla#me>
	a foaf:Person ;
	foaf:name "David Robillard" ;
	foaf:mbox <mailto:d@drobilla.net> ;
	rdfs:seeAlso <http://drobilla.net/drobilla> .

<http://lv2plug.in/ns/ext/host-info> a lv2:Specification ;
	doap:license <http://usefulinc.com/doap/licenses/mit> ;
	doap:name    "LV2 Host Info" ;
    doap:shortdesc "A format for describing LV2 hosts." ;
	doap:developer <http://drobilla.net/drobilla#me> ;
	lv2:documentation """
<p>This specification defines various properties to represent useful information
about LV2 hosts.  Currently, the primary use of this specification is to describe which
extensions are supported by a given host.</p>

<p>The extensions supported by a host can be described like this:</p>
<pre class="turtle-code">
@prefix hi: &lt;http://lv2plug.in/ns/ext/host-info#&gt; .

&lt;http://example.org/some-host&gt;
    a hi:Host ;
    doap:name "Foo Rack" ;
    hi:supportsExtension [
        hi:extension &lt;http://example.org/some-extension&gt; ;
        hi:sinceVersion "1.2.0"
    ] .
</pre>
""" .


## Core Classes / Properties

hi:Host a rdfs:Class ;
	rdfs:label "LV2 Host" ;
	rdfs:subClassOf [ a owl:Restriction ;
		owl:onProperty     doap:name ;
		owl:someValuesFrom xsd:string ;
		owl:minCardinality 1 ;
		rdfs:comment "A hi:Host MUST have at least one string doap:name"
	] ;
	rdfs:comment """
An application that supports loading LV2 plugins, or performs other
LV2 related functionality.
""" .

hi:supportsExtension a rdf:Property ;
	rdfs:domain  hi:Host ;
	rdfs:range   hi:ExtensionSupport ;
	rdfs:label   "supports extension" ;
	rdfs:comment "Relates a Host to its ExtensionSupport" .

hi:ExtensionSupport a rdfs:Class ;
	rdfs:label "Extension Support" ;
	rdfs:subClassOf [ a owl:Restriction ;
		owl:onProperty     hi:sinceVersion ;
		owl:someValuesFrom xsd:string ;
		owl:minCardinality 1 ;
		rdfs:comment """
A hi:ExtensionSupport MUST have at least one string hi:sinceVersion
""" ] ;
	rdfs:comment "A description of the support for an extension by a Host" .

hi:extension a rdf:Property ;
	rdfs:domain  hi:ExtensionSupport ;
	rdfs:range   lv2:Specification ;
	rdfs:label   "extension" ;
	rdfs:comment "Indicates the extension supported by a host." .

hi:sinceVersion a rdf:Property ;
	rdfs:domain  hi:ExtensionSupport ;
	rdfs:range   xsd:string ;
	rdfs:label   "since version" ;
	rdfs:comment """
The initial version of a host which supported an extension.
This property MUST always be given
""" .

hi:untilVersion a rdf:Property ;
	rdfs:domain  hi:ExtensionSupport ;
	rdfs:range   xsd:string ;
	rdfs:label   "until version" ;
	rdfs:comment """
The final version of a host which supported an extension.  This property can
be used if support for an extension was discontinued in a host for some reason.
""" .