I think it is because your real resource URL is not <http://localhost:8080/marmotta/resource/Deck_1> But it is <http://ont.cbnl.org/cbnl-extension-example.ttl#Deck_1>
Marmotta doesn't handle URL-rewriting. See in my example that I did use the Marmotta's url for my test resources. Just for a test, you could try to make a little .ttl file with resources as: <http://localhost:8080/marmotta/resource/Deck1> a <something>... and this should work. So, in a real case, you will install Marmotta on a specific domain, as "http://ont.cbnl.org"; Then you need to have your Linked Data resources URL which starts with: "http://ont.cbnl.org/resource/"; as for instance <http://ont.cbnl.org/resource/Deck1> or <http://ont.cbnl.org/resource/cbnl-extension-example/Deck1> Thats how I understand it. The team might give more infos. Fabian >>> "Bohms, H.M. (Michel)" <michel.bo...@tno.nl> 09.10.2014 09:25 >>> Strange, doesnt work for me: 1. I have: 2. If I know do in browser: http://localhost:8080/marmotta/resource/Deck_1, I get: Any tip very much appreciated…Michel Dr. ir. H.M. (Michel) Bohms Sr. Research Scientist Structural ReliabilityT +31 (0)88 866 31 07 M +31 (0)63 038 12 20 E michel.bohms@tno.nlLocation This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. TNO accepts no liability for the content of this e-mail, for the manner in which you use it and for damage of any kind resulting from the risks inherent to the electronic transmission of messages. From: Fabian Cretton [mailto:fabian.cret...@hevs.ch] Sent: woensdag 8 oktober 2014 16:02 To: users@marmotta.apache.org Subject: RE: Rép. : Re: How to use Marmotta for Linked data publishing ? Michel, I access my marmotta server on: "vmhwebsem:8081/" (I did configure Marmotta/Tomcat to remove the /marmotta part) So I did create a turtle file: @prefix rdfs: <http://www.w3.org/2000/01/rdf-schema#> . <http://vmhwebsem:8081/resource/tstLDRes> a <http://xmlns.com/foaf/0.1/Person>; rdfs:label "A resource to test Marmotta's Linked Data publishing" . <http://vmhwebsem:8081/resource/person/tstLDRes2> a <http://xmlns.com/foaf/0.1/Person>; rdfs:label "A second resource to test Marmotta's Linked Data publishing" . After loading the file, I could enter the resource's URL in the browser, as: http://vmhwebsem:8081/resource/tstLDRes or http://vmhwebsem:8081/resource/person/tstLDRes2 and the browser was effectively redirected to the corresponding html representation. Here are a few curl examples: curl -v -H "Accept: text/turtle" "http://vmhwebsem:8081/resource/tstLDRes"; 303 : http://vmhwebsem:8081/meta/text/turtle/tstLDRes curl -v -H "Accept: text/html" "http://vmhwebsem:8081/resource/tstLDRes"; 303 : http://vmhwebsem:8081/meta/text/html/tstLDRes curl -v -H "Accept: application/rdf+xml" "http://vmhwebsem:8081/resource/tstLDRes"; http://vmhwebsem:8081/meta/application/rdf+xml/tstLDRes With json -> redirected to jsonLD representation: curl -v -H "Accept: application/json" "http://vmhwebsem:8081/resource/tstLDRes"; http://vmhwebsem:8081/meta/application/ld+json/tstLDRes curl -v -H "Accept: application/json" "http://vmhwebsem:8081/meta/application/ld+json/tstLDRes"; hope this helps Fabian >>> "Bohms, H.M. (Michel)" <michel.bo...@tno.nl> 08.10.2014 15:33 >>> Great that it works that way! Thx Fabian for reasking this issue, would be good to have extra examples/documentation on this indeed. Can you give me some simple examples for typical uri to class resources and individuals, guess I making some simple mistakes not getting it to work to my own ontologies and data sets, Thx a lot! Michel Dr. ir. H.M. (Michel) Bohms Sr. Research Scientist Structural ReliabilityT +31 (0)88 866 31 07 M +31 (0)63 038 12 20 E michel.bohms@tno.nlLocation This message may contain information that is not intended for you. If you are not the addressee or if this message was sent to you by mistake, you are requested to inform the sender and delete the message. TNO accepts no liability for the content of this e-mail, for the manner in which you use it and for damage of any kind resulting from the risks inherent to the electronic transmission of messages. From: Fabian Cretton [mailto:fabian.cret...@hevs.ch] Sent: woensdag 8 oktober 2014 15:14 To: users@marmotta.apache.org Subject: Rép. : Re: How to use Marmotta for Linked data publishing ? Thank you Sebastian, Just tried it, it works perfectly. Before asking here, I did search for information on the official web site and in the wiki, but didn't find the information you gave here. Is it just that I missed it ? otherwise, I suggest to add that information for other people. It was already a real questionning for me and also Michel. You ask me "Would a feature that allows automatically rewriting certain URI prefixes be useful to you? " the answer is that I don't have such a need so far. But from my experience with pubby, I guess it could bring some flexibility on the RDF data (not forcing published resources to be defined with http://<server>/<marmotta>/resource/ prefix). But are there real life needs about that ? I mean, in a linked data environment URL needs to be fixed and long lasting, so where does URL rewriting really come into play in such a context ? And the last question is about LDP: does it mean that LDP is all about handling "containers", but don't say anything about Linked Data publishing (i.e. dereferencing a resource). Thats the conclusion from Michel, and so far it is also mine. But that seems surprising at first glance. In other words, LDP would define how to access and handle a bunch of resources (refering to the container), but not how to access a single resource, is that right ? Thank you Fabian >>> Sebastian Schaffert <sebastian.schaff...@gmail.com> 07.10.2014 12:56 >>> Hi Fabian, 2014-10-07 8:42 GMT+02:00 Fabian Cretton <fabian.cret...@hevs.ch>: Hi, How can Marmotta be used for linked data publishing (à la Pubby), thus handling content negociation when querying (dereferencing) a resource hosted by Marmotta. Marmotta does content negotiation automatically if you access http://<server>/<marmotta>/resource/<resource-id>. However, unlike Pubby, Marmotta is not a wrapper around existing RDF data but a native Linked Data server, i.e. it does no URI rewriting. So you would need to make sure your resources already have resolvable URIs that point to the Marmotta server (i.e. starting with the http://<server>/<marmotta>/resource/ prefix). In that case, Marmotta not only supports content negotiation for GET requests, but also for POST (create resource) and PUT (upload RDF data to resource). If you use URIs that do not resolve to the Marmotta server, you can still use http://<server>/<marmotta>/resource?uri=<uri>, but this is just for convenience, not really Linked Data. Would a feature that allows automatically rewriting certain URI prefixes be useful to you? We were discussing this some time ago, but for the moment put it on hold. This question is related to [1] where I didn't find the answers, I think Michel was looking for the same information. If I take a DBPedia example, a client can ask for http://dbpedia.org/resource/Germany and depending on the requested format, get an html representation of the resource http://dbpedia.org/page/Germany or the RDF representation http://dbpedia.org/data/Germany Works in Marmotta as well. I did set up such a behavior using Pubby in the past, but I would like to do the same using Marmotta instead. Also I am not familiar with LDP yet, but started reading about it. If such linked data publishing is possible, is it a basic Marmotta feature (will Marmotta publish any resource of its store as linked data), or does it rely on the LDP implementation (only LDPR will thus be published) ? All resources matching the Marmotta resource prefix will be published. Technically, there is simply a webservice listening at http://<server>/<marmotta>/resource and anything on the path below (or optionally the uri= query parameter) that will serve a client Linked Data conforming data. As Michel asked in [1], is there any example about how to set up such a behaviour ? This feature being certainly different from the "/marmotta/resource?uri=" web service. You don't need to use "/marmotta/resource?uri" if the resource URI matches the correct prefix. ;-) Thank you for any pointer. Fabian [1] http://mail-archives.apache.org/mod_mbox/marmotta-users/201409.mbox/%3C730127A8D040CB4A976BE07F089997068BCC2411%40EXC-MBX03.tsn.tno.nl%3E
