HTTP 400 "Bad request" when trying to upload new managed entity with explicit register item about ukl-registry-poc HOT 8 CLOSED

note: the formatting of this issue-post is hiding some of the TTL ... relates to angle-brackets "<" and ">" marking up hypertext ... edit the page to see everything. What syntax should I use for formatting???

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As the error messages says, the problem with the use of relative URIs[*] for updates. If you use the correct absolute URI it should work.

It would seem reasonable to allow <> for update, I'll investigate and add that feature.

[*] Note that in RDF there is technically no such thing as a relative URI. It is just that by leaving the @base out of the payload we can inject it externally at the time the payload is parsed.

Regarding formatting, for the documentation I used textile with "bc. code" for code formatting. With the default markdown syntax you should be able to use block indenting by four spaces

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Thanks. I will try with absolute URI. The "bc." formatting doesn't appear to work in issue posts; only the wiki. Maybe I'm missing something.

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Ah sorry, you don't seem to be able to switch away from markdown so indent four spaces is the only option.

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Re "markdown" ... noted.

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Have tried using absolute URIs. This works provided that I also include the reg:notation property that matches.

Also note that this does include the domain-specific additional metadata that I am having trouble adding in issue #39. This works fine and displays in the web UI too under "metadata".

As expected this extra metadata property is applied to the Version (/def/numbers/_eight:1) rather than the VersionedThing (/def/numbers/_eight).

Here's what I did:

file:

@Prefix rdfs: http://www.w3.org/2000/01/rdf-schema# .
@Prefix dct: http://purl.org/dc/terms/ .
@Prefix reg: http://purl.org/linked-data/registry# .
@Prefix skos: http://www.w3.org/2004/02/skos/core# .
@Prefix prov: http://www.w3.org/ns/prov# .

<>
a reg:RegisterItem ;
reg:definition
[ reg:entity http://ukgovld-registry.dnsalias.net/def/numbers/eight
] ;
reg:itemClass skos:Concept ;
reg:register http://ukgovld-registry.dnsalias.net/def/numbers ;
prov:wasAttributedTo http://jeremytandy.me.uk/self#id ;
reg:status reg:statusStable ;
reg:notation "eight" ;
.

http://ukgovld-registry.dnsalias.net/def/numbers/eight
a skos:Concept ;
rdfs:label "eight"@en ;
dct:description "Equivalent to the product of two and four; one more than seven, or two less than ten; 8."@en ;
.

Action:

curl -i -H "Accept:text/plain" -H "Content-Type:text/turtle" -X POST --data "@number-eight-post2.ttl" http://ukgovld-registry.dnsalias.net/def/numbers

Response:

HTTP/1.1 201 Created
Server: nginx/1.2.6
Date: Sun, 03 Mar 2013 15:06:50 GMT
Content-Length: 0
Connection: keep-alive
Location: http://ukgovld-registry.dnsalias.net/def/numbers/_eight

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So as far as I can see this all works. I've added test cases based on your example.

With your example:

@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix dct:     <http://purl.org/dc/terms/> .
@prefix reg:     <http://purl.org/linked-data/registry#> .
@prefix skos:    <http://www.w3.org/2004/02/skos/core#> .
@prefix prov:    <http://www.w3.org/ns/prov#> .

<>
      a       reg:RegisterItem ;
      reg:definition
              [ reg:entity <http://ukgovld-registry.dnsalias.net/def/numbers/eight>
              ] ;
      reg:itemClass skos:Concept ;
      reg:register <http://ukgovld-registry.dnsalias.net/def/numbers> ;
      prov:wasAttributedTo <http://jeremytandy.me.uk/self#id> ;
      reg:status reg:statusStable ;
      reg:notation "eight" ;
      .

<http://ukgovld-registry.dnsalias.net/def/numbers/eight>
      a       skos:Concept ;
      rdfs:label "eight"@en ;
      dct:description "Equivalent to the product of two and four; one more than seven, or two less than ten; 8."@en ;
      .

then you need a notation because you are posting to the register with an empty "relative" URI for the RegisterItem.

It is equally possible to get an explicit URI (relative or absolute) for the RegisterItem and let the registry infer the notation:

@prefix rdfs:    <http://www.w3.org/2000/01/rdf-schema#> .
@prefix dct:     <http://purl.org/dc/terms/> .
@prefix reg:     <http://purl.org/linked-data/registry#> .
@prefix skos:    <http://www.w3.org/2004/02/skos/core#> .
@prefix prov:    <http://www.w3.org/ns/prov#> .

<_eightb>
      a       reg:RegisterItem ;
      reg:definition
              [ reg:entity <http://ukgovld-registry.dnsalias.net/def/numbers/eight>
              ] ;
      reg:itemClass skos:Concept ;
      reg:register <http://ukgovld-registry.dnsalias.net/def/numbers> ;
      prov:wasAttributedTo <http://jeremytandy.me.uk/self#id> ;
      reg:status reg:statusStable ;
      .

<http://ukgovld-registry.dnsalias.net/def/numbers/eight>
      a       skos:Concept ;
      rdfs:label "eight"@en ;
      dct:description "Equivalent to the product of two and four; one more than seven, or two less than ten; 8."@en ;
      .

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Closing to tidy up the issues list since I don't think there is a bug here and the test cases now include these examples.

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