@Override
public PersistentIdentifier createIdentifier(VirtualCollection vc)
throws VirtualCollectionRegistryException {
if (vc == null) {
throw new NullPointerException("vc == null");
}
logger.debug("creating handle for virtual collection \"{}\"", vc.getId());
try {
String target = makeCollectionURI(vc);
URI serviceURI = URI.create(SERVICE_URI_BASE + "write/create");
List<NameValuePair> params = new ArrayList<NameValuePair>();
params.add(new BasicNameValuePair("url", target));
Map<Attribute, String> props = invokeWebService(serviceURI, params);
String pid = props.get(Attribute.PID);
if (pid == null) {
throw new VirtualCollectionRegistryException("no handle returned");
}
logger.info("created handle \"{}\" for virtual collection \"{}\"", pid, vc.getId());
return new PersistentIdentifier(vc, PersistentIdentifier.Type.HANDLE, pid);
} catch (VirtualCollectionRegistryException e) {
throw new RuntimeException("failed to create handle", e);
}
}
private String makeCollectionURI(VirtualCollection vc) {
return base_uri + "service/clarin-virtualcollection/" + vc.getId();
}