- From: Henry Story <henry.story@bblfish.net>
- Date: Mon, 14 Jan 2013 14:54:03 +0100
- To: public-ldp-wg@w3.org
- Message-Id: <68BFBD61-B626-4154-8F83-E98BA88D9678@bblfish.net>
The argument is that instead of having containers
with URLs such as
http://example.org/container1
they should be
http://example.org/container1/
The argument for this is as follows:
Consider the example 1 as it is currently written:
[[
@prefix dcterms: <http://purl.org/dc/terms/>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix ldp: <http://www.w3.org/ns/ldp#>.
<http://example.org/container1>
a ldp:Container;
dcterms:title "A very simple container";
rdfs:member
<http://example.org/container1/member1>,
<http://example.org/container1/member2>,
<http://example.org/container1/member3>.
]]
Let us say we make these now into relative URIs,
as required by ISSUE-29 and ACTION-30. Consider
the difference between the way the two containers
are written:
1. Container URI is http://example.org/container1/
---------------------------------------------------
Then the relative version of example 1 can be the very
elegant:
@prefix dcterms: <http://purl.org/dc/terms/>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix ldp: <http://www.w3.org/ns/ldp#>.
<> a ldp:Container;
dcterms:title "A very simple container";
rdfs:member <member1>, <member2>, <member3> .
2. Container URI is http://example.org/container1
--------------------------------------------------
If a GET on this container were to return the above
representation then that would produce a graph isomorphic
to:
[[
@prefix dcterms: <http://purl.org/dc/terms/>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix ldp: <http://www.w3.org/ns/ldp#>.
<http://example.org/container1>
a ldp:Container;
dcterms:title "A very simple container";
rdfs:member
<http://example.org/member1>,
<http://example.org/member2>,
<http://example.org/member3>.
]]
That is not what was intended. Therefore the returned document would
have to be the much less elegant:
[[
@prefix dcterms: <http://purl.org/dc/terms/>.
@prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#>.
@prefix ldp: <http://www.w3.org/ns/ldp#>.
<> a ldp:Container;
dcterms:title "A very simple container";
rdfs:member <container1/member1>, <container1/member2>, <container1/member3> .
]]
So clearly the better solution is to have containers be entities ending
in a "/" .
Henry
A short message from my sponsors: Vive la France!
Social Web Architect
http://bblfish.net/
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Received on Monday, 14 January 2013 13:54:38 UTC