How to use

DatasetModuleCannotBeDeletedException

in

co.cask.cdap.common

/**
 * Deletes all dataset modules in a namespace.
 *
 * @throws DatasetModuleCannotBeDeletedException if one of the dataset modules cannot be deleted,
 * usually due to existing dataset instances using the dataset module
 * @throws IOException if a network error occurred
 * @throws UnauthenticatedException if the request is not authorized successfully in the gateway server
 */
public void deleteAll(NamespaceId namespace)
 throws DatasetModuleCannotBeDeletedException, IOException, UnauthenticatedException, UnauthorizedException {
 URL url = config.resolveNamespacedURLV3(namespace, "data/modules");
 HttpResponse response = restClient.execute(HttpMethod.DELETE, url, config.getAccessToken(),
                       HttpURLConnection.HTTP_CONFLICT);
 if (response.getResponseCode() == HttpURLConnection.HTTP_CONFLICT) {
  // TODO: exception for all modules
  throw new DatasetModuleCannotBeDeletedException(null);
 }
}

/**
 * Deletes the specified {@link DatasetModuleId}
 */
@Override
public void delete(DatasetModuleId datasetModuleId) throws Exception {
 NamespaceId namespaceId = datasetModuleId.getParent();
 if (NamespaceId.SYSTEM.equals(namespaceId)) {
  throw new UnsupportedOperationException(
   String.format("Cannot delete module '%s' from '%s' namespace.",
          datasetModuleId.getModule(), datasetModuleId.getNamespace()));
 }
 ensureNamespaceExists(namespaceId);
 DatasetModuleMeta moduleMeta = typeManager.getModule(datasetModuleId);
 if (moduleMeta == null) {
  throw new DatasetModuleNotFoundException(datasetModuleId);
 }
 try {
  typeManager.deleteModule(datasetModuleId);
 } catch (DatasetModuleConflictException e) {
  throw new DatasetModuleCannotBeDeletedException(datasetModuleId, e.getMessage());
 }
}

/**
 * Deletes the specified {@link DatasetModuleId}
 */
@Override
public void delete(DatasetModuleId datasetModuleId) throws Exception {
 NamespaceId namespaceId = datasetModuleId.getParent();
 if (NamespaceId.SYSTEM.equals(namespaceId)) {
  throw new UnsupportedOperationException(
   String.format("Cannot delete module '%s' from '%s' namespace.",
          datasetModuleId.getModule(), datasetModuleId.getNamespace()));
 }
 ensureNamespaceExists(namespaceId);
 DatasetModuleMeta moduleMeta = typeManager.getModule(datasetModuleId);
 if (moduleMeta == null) {
  throw new DatasetModuleNotFoundException(datasetModuleId);
 }
 try {
  typeManager.deleteModule(datasetModuleId);
 } catch (DatasetModuleConflictException e) {
  throw new DatasetModuleCannotBeDeletedException(datasetModuleId, e.getMessage());
 }
}

/**
 * Deletes a dataset module.
 *
 * @param module the dataset module to delete
 * @throws DatasetModuleCannotBeDeletedException if the dataset module cannot be deleted,
 * usually due to other dataset modules or dataset instances using the dataset module
 * @throws DatasetModuleNotFoundException if the dataset module with the specified name was not found
 * @throws IOException if a network error occurred
 * @throws UnauthenticatedException if the request is not authorized successfully in the gateway server
 */
public void delete(DatasetModuleId module)
 throws DatasetModuleCannotBeDeletedException, DatasetModuleNotFoundException,
 IOException, UnauthenticatedException, UnauthorizedException {
 URL url = config.resolveNamespacedURLV3(module.getParent(), String.format("data/modules/%s", module.getModule()));
 HttpResponse response = restClient.execute(HttpMethod.DELETE, url, config.getAccessToken(),
                       HttpURLConnection.HTTP_CONFLICT,
                       HttpURLConnection.HTTP_NOT_FOUND);
 if (response.getResponseCode() == HttpURLConnection.HTTP_CONFLICT) {
  throw new DatasetModuleCannotBeDeletedException(module);
 } else if (response.getResponseCode() == HttpURLConnection.HTTP_NOT_FOUND) {
  throw new DatasetModuleNotFoundException(module);
 }
}