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Philipp Czora
2018-06-26 17:27:09 +02:00
parent 7b64d0aa58 d55fa508b9
commit 063772c1d5
1 changed files with 41 additions and 19 deletions
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60
scm-webapp/src/main/java/sonia/scm/api/v2/resources/ResourceManagerAdapter.java
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@@ -14,48 +14,70 @@ import java.util.Collection;
import java.util.function.Function;
import java.util.function.Supplier;
class ResourceManagerAdapter<T extends ModelObject, D extends HalRepresentation, E extends Exception> extends AbstractManagerResource<T, E> {
/**
* Adapter from resource http endpoints to managers.
* @param <MODEL_OBJECT> The type of the model object, eg. {@link sonia.scm.user.User}.
* @param <DTO> The corresponding transport object, eg. {@link UserDto}.
* @param <EXCEPTION> The exception type for the model object, eg. {@link sonia.scm.user.UserException}.
*/
class ResourceManagerAdapter<MODEL_OBJECT extends ModelObject, DTO extends HalRepresentation, EXCEPTION extends Exception> extends AbstractManagerResource<MODEL_OBJECT, EXCEPTION> {
ResourceManagerAdapter(Manager<T, E> manager) {
ResourceManagerAdapter(Manager<MODEL_OBJECT, EXCEPTION> manager) {
super(manager);
}
public Response get(String id, Function<T, D> mapper) {
T entity = manager.get(id);
if (entity == null) {
/**
* Reads the model object for the given id, transforms it to a dto and returns a corresponding http response.
* This handles all corner cases, eg. no matching object for the id or missing privileges.
*/
Response get(String id, Function<MODEL_OBJECT, DTO> mapToDto) {
MODEL_OBJECT modelObject = manager.get(id);
if (modelObject == null) {
return Response.status(Response.Status.NOT_FOUND).build();
}
D dto = mapper.apply(entity);
DTO dto = mapToDto.apply(modelObject);
return Response.ok(dto).build();
}
public Response update(String id, Function<T, T> mapper) {
T existingEntity = manager.get(id);
T changedEntity = mapper.apply(existingEntity);
return update(id, changedEntity);
/**
* Update the model object for the given id according to the given function and returns a corresponding http response.
* This handles all corner cases, eg. no matching object for the id or missing privileges.
*/
public Response update(String id, Function<MODEL_OBJECT, MODEL_OBJECT> applyChanges) {
MODEL_OBJECT existingModelObject = manager.get(id);
MODEL_OBJECT changedModelObject = applyChanges.apply(existingModelObject);
return update(id, changedModelObject);
}
public Response getAll(int page, int pageSize, String sortBy, boolean desc, Function<PageResult<T>, CollectionDto> mappger) {
PageResult<T> pageResult = fetchPage(sortBy, desc, page, pageSize);
return Response.ok(mappger.apply(pageResult)).build();
/**
* Reads all model objects in a paged way, maps them using the given function and returns a corresponding http response.
* This handles all corner cases, eg. missing privileges.
*/
public Response getAll(int page, int pageSize, String sortBy, boolean desc, Function<PageResult<MODEL_OBJECT>, CollectionDto> mapToDto) {
PageResult<MODEL_OBJECT> pageResult = fetchPage(sortBy, desc, page, pageSize);
return Response.ok(mapToDto.apply(pageResult)).build();
}
public Response create(D dto, Supplier<T> entitySupplyer, Function<T, String> uriCreator) throws IOException, E {
/**
* Creates a model object for the given dto and returns a corresponding http response.
* This handles all corner cases, eg. no conflicts or missing privileges.
*/
public Response create(DTO dto, Supplier<MODEL_OBJECT> modelObjectSupplier, Function<MODEL_OBJECT, String> uriCreator) throws IOException, EXCEPTION {
if (dto == null) {
return Response.status(400).build();
}
T entity = entitySupplyer.get();
manager.create(entity);
return Response.created(URI.create(uriCreator.apply(entity))).build();
MODEL_OBJECT modelObject = modelObjectSupplier.get();
manager.create(modelObject);
return Response.created(URI.create(uriCreator.apply(modelObject))).build();
}
@Override
protected GenericEntity<Collection<T>> createGenericEntity(Collection<T> items) {
protected GenericEntity<Collection<MODEL_OBJECT>> createGenericEntity(Collection<MODEL_OBJECT> modelObjects) {
throw new UnsupportedOperationException();
}
@Override
protected String getId(T item) {
protected String getId(MODEL_OBJECT item) {
return item.getId();
}