# Samizdat RDF Schema, N3 notation
# 
#   Copyright (c) 2002-2003 Dmitry Borodaenko <angdraug@debian.org>
#
#   This program is free software.
#   You can distribute/modify this program under the terms of
#   the GNU General Public License version 2 or later.
#

@prefix : <#> .

# RDF Namespaces
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> .

# Dublin Core
@prefix dc: <http://purl.org/dc/elements/1.1/> .
@prefix dct: <http://purl.org/dc/terms/> .

# General Resource Properties

# Resource ID
:id
	rdfs:domain rdfs:Resource ;
	rdfs:comment "Unique (within site) numeric id of the resource." .

# Publication Timestamp
dc:date
	rdfs:domain rdfs:Resource ;
	rdfs:comment "Date and time when the resource was published on a site." .

# Resource Title
dc:title
	rdfs:domain :Message .   # todo: expand to rdfs:Resource

# Samizdat Classes

# Member
:Member   # todo: integrate with FOAF
	rdfs:subClassOf rdfs:Resource .

:login
	rdfs:domain :Member ;
	rdfs:range rdfs:Literal .

:fullName
	rdfs:subPropertyOf dc:title ;   # todo: replace with dc:title
	rdfs:domain :Member ;
	rdfs:range rdfs:Literal .

:email
	rdfs:domain :Member ;
	rdfs:range rdfs:Literal .

# Messages and Threads
:Message
	rdfs:subClassOf rdfs:Resource .

:inReplyTo
	rdfs:subPropertyOf dct:references ;
	rdfs:domain :Message ;
	rdfs:range :Message .

dc:creator
	rdfs:domain :Message ;
	rdfs:range :Member .

dc:format
	rdfs:domain :Message .

dc:description
	rdfs:domain :Message ;
	rdfs:range :Message .

:content
	rdfs:domain :Message ;
	rdfs:range rdfs:Literal .

# Content Organization and Filtering

:Focus
	rdfs:subClassOf rdfs:Resource ;
	rdfs:comment "A characteristic of a resource. In addition to standard focuses, each site can create its own focuses, representing different topics of interest." .

dc:relation
	rdfs:domain rdfs:Resource ;
	rdfs:range :Focus .

# Voting
:Proposition
	rdfs:subClassOf rdf:Statement ;
	rdfs:comment "A kind of statement that can be voted upon by site members." .

:rating
	rdfs:domain :Proposition ;
	rdfs:range rdfs:Literal ;
	rdfs:comment "Approvement rating of a proposition as voted by site members. Calculated from individual votes." .

:Vote
	rdfs:subClassOf rdfs:Resource ;
	rdfs:comment "Vote cast on approvement rating of a statement by a site member." .

:voteProposition
	rdfs:domain :Vote ;
	rdfs:range :Proposition .

:voteMember
	rdfs:domain :Vote ;
	rdfs:range :Member .

:voteRating
	rdfs:domain :Vote ;
	rdfs:range rdfs:Literal .

# Author-Approved Properties

# Version Control
dct:isVersionOf
	rdfs:domain :Message ;
	rdfs:range :Message .

:openForAll
	rdfs:domain :Message ;
	rdfs:range rdfs:Literal 
	rdfs:comment "When true, editing of this message is open for all members." .

# Aggregate Messages
dct:tableOfContents   # compare with dct:hasPart
	rdfs:domain :Message .

dct:isPartOf
	rdfs:domain :Message ;
	rdfs:range :Message .