Spring data rest. How to take repository class through request URI - spring-data-rest

Question

Can anyone help me please.
I have a few entities and repositories inside my app which is based on spring data rest.
Right now I wrote my own HandlerInterceptor implementation to do preHandling each request and I have to know which repository will use for each http request.
Ofc I can make separate Interceptor for each repository but this solution is not flexible Any ideas?
Thx for advance

Answer 1

Repositories are resolved in spring data-rest using the Repositories class.
The repositories class exposes a helper method (getRepositoryFor(Class<?>)) for finding the repository for a given class.
You can use the following snippet for finding a repository for a given class in your interceptor:
Repositories repositories = new Repositories(appContext);
repositories.getRepositoryFor(entityObject.getClass());
A more elegant solution would be to take advantage of the built-in spring-data-rest repository lookup implementation with a custom controller(RootResourceInformationHandlerMethodArgumentResolver)
For this you just need to add a RootResourceInformation parameter to a RepositoryRestController endpoint method.
#RepositoryRestController
#RequestMapping("/customName")
public class RepositoryExportController {
#Autowired
private ApplicationContext appContext;
#RequestMapping(method = RequestMethod.GET, value = "{repository}",
produces = MediaTypes.HAL_JSON_VALUE)
#ResponseBody
public Resources<Resource<?>> export(RootResourceInformation resourceInformation, ...) {
Repositories repositories = new Repositories(appContext);
CrudRepository repo=(CrudRepository)repositories.getRepositoryFor(resourceInformation.getDomainType());
repo.findAll();
...other logic....
}