DSpace REST API - /items/find-by-metadata-field

[Filippo Santoro]

Dear all,
I'm using the DSpace REST APIs for an external application. I have some difficult to use the end point /items/find-by-metadata-field to search an item based on a particular metadata.
In fact, using Postman with the following request:

http://server16.iss.it:8080/rest/items/find-by-metadata-field?key=dc.contributor.author&value=Petrini

I get an HTTP500 error (internal server error). What is the right syntax for using it?

Thanks in advance

Filippo

[Alan Orth]

Hello, Filippo.

You need to POST a MetadataEntry object with the request[0]. For example, in DSpace 5.x this works:

$ curl -s -H "accept: application/json" -H "Content-Type: application/json" -X POST "http://server16.iss.it:8080/rest/items/find-by-metadata-field" -d '{"key": "dc.contributor.author","value": "Petrini"}'

Note that the API only returns exact text matches (no wildcard), and you will probably need to specify the language to actually match anything as well:

$ curl -s -H "accept: application/json" -H "Content-Type: application/json" -X POST "http://server16.iss.it:8080/rest/items/find-by-metadata-field" -d '{"key": "dc.contributor.author","value": "Petrini","language": "en_US"}'

The language can also be a literal null (without quotes). It all depends on how your metadata is entered into the database.

[0] https://wiki.duraspace.org/display/DSDOC5x/REST+API

Cheers,

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Alan Orth
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