Skip to main content
Version: ADONIS 14/ADOIT 15/ADOGRC 11.2

Retrieve a list of classes in the metamodel

This article shows how to use the API to get a list of the available classes contained in the metamodel .

The Java snippet below sends a request to the endpoint /rest/<VERSION>/metamodel/classes and receives as a response a JSON structure containing the list of available classes, each with ID and language-inspecific name.


The Java snippet below uses Basic Authentication.

Replace the values in angle brackets with values that fit your setup, e.g. instead of <HOST> use the host at which you access your ADOXX instance.

Click to view the code!

Source Code

public class GetMetamodelClasses
public static void main (final String [] args) throws ClientProtocolException, IOException
final CloseableHttpClient aClient = HttpClients.createDefault ();

final String sUser = "<USER>";
final String sPass = "<PASSWORD>";
final String sPath = "http://<HOST>:<PORT>/ADOXX/rest/2.0/metamodel/classes";

final HttpGet aMethod = new HttpGet (sPath);

// The headers controlling the return type and the language do not have to be considered for
// token generation
aMethod.addHeader ("Accept", "application/json");
aMethod.addHeader ("Accept-Language", "en");

// Construction of the header to pass the basic authentication information
aMethod.addHeader ("Authorization",
"Basic " +
DatatypeConverter.printBase64Binary ((sUser + ":" + sPass).getBytes ()));

final CloseableHttpResponse aResponse = aClient.execute (aMethod);

final String sResult = EntityUtils.toString (aResponse.getEntity (), "UTF-8");
final StatusLine aStatusLine = aResponse.getStatusLine ();
System.out.println ("Status Code: " + aStatusLine.getStatusCode ());
System.out.println ("Result: \n" + sResult);
catch (final Exception aEx)
aEx.printStackTrace ();
aResponse.close ();

The result should look similar to the following:

Status Code: 200
"rest_links": [ ... ],
"classes": [ ...]