At a guess this is due to a miss match between the datavalue of a property
and the datavalue that you are trying to set in a statement for that
property.
The error also says that it gets an array where it expects a string so I
guess the issue is with P251 where the value is an array instead of a
string!
Could P251 possibly be a string?
On 10 August 2015 at 14:25, Bo Ferri <zazi(a)smiy.org> wrote:
Hi all,
(apologies, if this is not the right place for raising the following issue
(if this is the case, then please delegate me to a more appropriated place
;) ))
we are currently evaluating Wikibase as storage for D:SWARM GDM data (see
[1,2]). Right now, we have a prototype client [3] that makes use of a
Wikidata Toolkit fork [4]. So far, we were able to write/create simple
items and properties. However, we also would like to create new items with
a given set of statements. Therefore, we intended to utilise the
'wbeditentity' HTTP API (and I had (and still have) a lively conversation
with Markus Krötzsch about this topic, see [5]). We get (a kind of) item
JSON serialisation (e.g. with help of JacksonObjectFactory-based
DatamodelConverter (Wikidata Toolkit code)). However, when sending this to
the 'webeditentity' API we always receive an error response like this:
"
{
"error": {
"code": "modification-failed",
"info": "array instead of string",
"messages": [
{
"name": "wikibase-validator-bad-type",
"parameters": [
"string",
"array"
],
"html": {
"*": "array instead of string"
}
}
],
"*": "See
http://[OUR WIKIBASE SERVICE IP]/api.php for API
usage"
}
}
"
We cannot really interpret what's wrong with the data model that we send
to this API (note: we make use of the POJOs below
'org.wikidata.wdtk.datamodel.json.jackson' package of Wikidata Toolkit, see
[6]). An example of a data JSON is attached to this e-mail.
Thanks a lot in advance for all your help.
Cheers,
Bo/T
[1]
http://dswarm.org
[2]
https://github.com/dswarm/dswarm-documentation/wiki/Graph-Data-Model
[3]
https://github.com/zazi/wikidata-d-swarm-importer/tree/own_mediawiki_api_cl…
[4]
https://github.com/zazi/Wikidata-Toolkit/tree/wikibase_api_write_modificati…
[5]
https://github.com/Wikidata/Wikidata-Toolkit/issues/162
[6]
https://github.com/zazi/wikidata-d-swarm-importer/blob/own_mediawiki_api_cl…
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