Retrieving the External Identifiers for an Object

Use the RegistryObject.getExternalIdentifiers method to retrieve a Collection of the object’s external identifiers. For each identifier, you can retrieve its name, value, and the classification scheme to which it belongs. For an external identifier, the method that retrieves the classification scheme is getIdentificationScheme. The following code fragment retrieves and displays an object’s external identifiers.

Collection exIds = object.getExternalIdentifiers();
Iterator exIdIter = exIds.iterator();
while (exIdIter.hasNext()) {
    ExternalIdentifier exId =
         (ExternalIdentifier) exIdIter.next();
    String name = exId.getName().getValue();
    System.out.println("  External identifier name is " +
        name);
    String exIdValue = exId.getValue();
    System.out.println("  External identifier value is " +
         exIdValue);
    ClassificationScheme scheme =
         exId.getIdentificationScheme();
    System.out.println("  External identifier " +
         "classification scheme is " +
         scheme.getName().getValue());
}

Some of the examples have a showExternalIdentifiers method that uses code similar to this. See, for example, JAXRSearchByName.java in the directory <INSTALL>/registry/samples/search-name/src.