In addition, LDPCs are also create when adding the first member. So you
can post to http://localhost:8080/ldp/example and that container will be
created.
For the moment we're only supporting basic containers. The
implementation of other types is planned for summer, one we get stable
the W3C test suite. Further details at the latest implementation report
(soon we'll publish a new one based on the new code at the ldp branch):
http://wiki.apache.org/marmotta/LDPImplementationReport/2014-03-11
Cheers,
On 05/07/14 01:00, Nandana Mihindukulasooriya wrote:
Hi Reto,
Few things apart from the Marmotta behavior. If you want to create a
Container, you should specify the interaction model you want using a Link
header. That is what the server has to honour not the type mentioned in the
POSTed content [1].
So the request should be
curl -D -X POST -H "Link: <http://www.w3.org/ns/ldp/BasicContainer>;
rel='type'" --data @simpleldpc.ttlhttp://localhost:8080/ldp
In addition, the DirectContainer that you post is invalid. According to
5.4.1.3 ~ 5.4.1.5 [2] , a Direct Container MUST define
ldp:membershipResource and (ldp:hasMemberRelation/ldp:isMemberOfRelation).
However, IMO the implementations have the freedom to add those triples on
creation time of the container, so it might be valid to POST a partial
representation of a container if the servers adds the necessary triples on
creation.
Best Regards,
Nandana
[1] http://www.w3.org/TR/ldp/#ldpc-post-createrdf
[2] http://www.w3.org/TR/ldp/#ldpdc-containres
On Fri, Jul 4, 2014 at 10:37 PM, Reto Gmür <[email protected]> wrote:
Hi,
Playing around with marmotta I tried to create a new LDPC.
I describe my container in a file
$ cat simpleldpc.ttl
@prefix dct: <http://purl.org/dc/terms/> .
@prefix ldp: <http://www.w3.org/ns/ldp#>.
<.> a ldp:DirectContainer ;
sct:title "My first LDPC" .
Post this to the container which is there by default at
http://localhost:8080/ldp
$ curl -D - -X POST --data @simpleldpc.ttl http://localhost:8080/ldp
HTTP/1.1 201 Created
Server: Apache Marmotta/3.3.0-SNAPSHOT (build 2+)
Last-Modified: Fri, 04 Jul 2014 20:25:07 GMT
ETag: W/"1404505507000"
Location: http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3
Link: <https://wiki.apache.org/marmotta/LDPImplementationReport/2014-03-11
;
rel="describedby"
Link: <http://www.w3.org/ns/ldp#Container>; rel="type"
Link: <http://www.w3.org/ns/ldp#Resource>; rel="type"
Link: <http://www.w3.org/ns/ldp#RDFSource>; rel="type"
Link: <http://www.w3.org/ns/ldp#BasicContainer>; rel="type"
Content-Length: 0
Date: Fri, 04 Jul 2014 20:25:07 GMT
looks good to me, let's access the newly created resource:
$ curl -D - http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3
HTTP/1.1 200 OK
Server: Apache Marmotta/3.3.0-SNAPSHOT (build 2+)
Last-Modified: Fri, 04 Jul 2014 20:25:07 GMT
ETag: "e7fbd1bca63f04ca23b8f0092b5c2f3"
Link: <https://wiki.apache.org/marmotta/LDPImplementationReport/2014-03-11
;
rel="describedby"
Link: <http://www.w3.org/ns/ldp#Resource>; rel="type"
Link: <http://www.w3.org/ns/ldp#NonRDFSource>; rel="type"
Link: <http://www.w3.org/ns/ldp#RDFSource>; rel="type"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="meta"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="describedby"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="content"
Content-Type: text/turtle
Transfer-Encoding: chunked
Date: Fri, 04 Jul 2014 20:26:19 GMT
@prefix ldp: <http://www.w3.org/ns/ldp#> .
@prefix rdf: <http://www.w3.org/1999/02/22-rdf-syntax-ns#> .
@prefix xsd: <http://www.w3.org/2001/XMLSchema#> .
@prefix dcterms: <http://purl.org/dc/terms/> .
@prefix : <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>
.
<http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>
ldp:interactionModel ldp:Container ;
a ldp:Resource , ldp:NonRDFSource , ldp:RDFSource ;
dcterms:modified "2014-07-04T20:25:07.000Z"^^xsd:dateTime ;
dcterms:created "2014-07-04T20:25:07.000Z"^^xsd:dateTime ;
dcterms:isFormatOf <
http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3> ;
dcterms:hasFormat <
http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3> ;
dcterms:format "application/x-www-form-urlencoded" .
The new resource has none of the two properties in the posted file. But it
is both an ldp:RDFSource and an ldp:NonRDFSource!
Let's see if it can nonetheless be used as a container, posting something
against it:
$ curl -D - -X POST --data @simplecontainer.ttl
http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3
HTTP/1.1 405 Method Not Allowed
Server: Apache Marmotta/3.3.0-SNAPSHOT (build 2+)
Last-Modified: Fri, 04 Jul 2014 20:25:07 GMT
ETag: "e7fbd1bca63f04ca23b8f0092b5c2f3"
Link: <https://wiki.apache.org/marmotta/LDPImplementationReport/2014-03-11
;
rel="describedby"
Link: <http://www.w3.org/ns/ldp#Resource>; rel="type"
Link: <http://www.w3.org/ns/ldp#NonRDFSource>; rel="type"
Link: <http://www.w3.org/ns/ldp#RDFSource>; rel="type"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="meta"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="describedby"
Link: <http://localhost:8080/ldp/f1f7816b-c90f-4b6e-aa76-48ad445d86d3>;
rel="content"
Content-Type: application/octet-stream
Content-Length: 36
Date: Fri, 04 Jul 2014 20:31:39 GMT
POST to NonRdfSource is not allowed
So creating an LDPC this way doesn't seem to work, instead I'm having quite
a weird resource lacking all the originally posted triples.
Why this behavior? What is the recommended way to create new LDPC in
marmotta?
Cheers,
Reto
--
Sergio Fernández
Partner Technology Manager
Redlink GmbH
m: +43 660 2747 925
e: [email protected]
w: http://redlink.co
