Native API

[nansu]

Hi:

I was trying to get meta data of a dataset of Harvard Datavers. However. it always returns with 404. Does anybody can help me out?

Code:

                

                HttpClient httpclient = new DefaultHttpClient();

                String key="this is the key";

                String id="hdl:1902.1/21183";

String serviceURL = "http://dataverse.harvard.edu/api/datasets/"+id+"/versions/3.0/files?key="+key;

HttpResponse response = httpclient.execute(new HttpGet(serviceURL));

String to = "";

int statusCode = response.getStatusLine().getStatusCode();

System.out.println(statusCode);

if (statusCode == 301 || statusCode == 302) {

Header[] hs = response.getHeaders("Location");

for (Header h : hs) {

to = h.getValue();

}

System.out.println("redirect: " + to);

} else {

String string = EntityUtils.toString(response.getEntity());

System.out.println(string);

}

}

[Philip Durbin]

Rather than "hdl:1902.1/21183" or any other "persistent id" you have to use the *database* id of the dataset with the native API, which isn't the easiest to find.

For example, the database id in this example is "10": https://apitest.dataverse.org/api/datasets/10/versions/1.0/files

We recognize that requiring native API users to use a database id of a dataset is an issue and that they would rather use the "persistent id" (often a DOI) when using the "native" API. That's what https://github.com/IQSS/dataverse/issues/1837 is about. (A fix has been proposed at https://github.com/IQSS/dataverse/pull/2893 .)

Unfortunately, it's not easy to figure out the database id of https://dataverse.harvard.edu/dataset.xhtml?persistentId=hdl:1902.1/21183 or any other dataset . I believe that the only way to expose the database id is via the Search API by passing the (undocumented) parameter show_entity_ids=true

I hope this helps. I just left a comment on issue #1837 that you're being affected. You aren't the only one. I hope the workarounds above help for now.

Phil

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Philip Durbin
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http://www.iq.harvard.edu/people/philip-durbin

[nansu]

Hi, Philip,

Yes. I grabbed id with search API and It works. Thank you so much.

在 2016年2月29日星期一 UTC-8下午6:15:00，Philip Durbin写道：

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