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@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://%5BOUR 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_cli... [4] https://github.com/zazi/Wikidata-Toolkit/tree/wikibase_api_write_modificatio... [5] https://github.com/Wikidata/Wikidata-Toolkit/issues/162 [6] https://github.com/zazi/wikidata-d-swarm-importer/blob/own_mediawiki_api_cli...
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