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/*
* Copyright 2015 Anton Tananaev (anton.tananaev@gmail.com)
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package org.traccar.api;
import java.sql.SQLException;
import java.util.Collection;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.SecurityContext;
import org.traccar.Context;
import org.traccar.helper.Clazz;
public class BaseResource<T, I> {
private final Class<T> clazz = Clazz.getGenericArgumentType(getClass());
@javax.ws.rs.core.Context
private SecurityContext securityContext;
public Collection<T> getEntities() {
Collection<T> collection;
try {
collection = Context.getDataManager().get(clazz);
} catch (SQLException e) {
throw new WebApplicationException(ResponseBuilder.badRequest(e));
}
if (collection == null || collection.isEmpty()) {
throw new WebApplicationException(ResponseBuilder.notFound());
} else {
return collection;
}
}
public T getEntity(I id) {
validateSecurityContext(ApplicationRole.USER, id);
T entity = Clazz.newInstance(clazz);
try {
Clazz.setId(entity, id);
entity = Context.getDataManager().get(entity);
} catch (Exception e) {
throw new WebApplicationException(ResponseBuilder.badRequest(e));
}
if (entity == null) {
throw new WebApplicationException(ResponseBuilder.notFound());
} else {
return entity;
}
}
public Response postEntity(T entity) {
try {
Context.getDataManager().add(entity);
return ResponseBuilder.ok(entity);
} catch (Exception e) {
return ResponseBuilder.badRequest(e);
}
}
public Response putEntity(I id, T entity) {
try {
Clazz.setId(entity, id);
Context.getDataManager().update(entity);
return ResponseBuilder.ok(entity);
} catch (Exception e) {
return ResponseBuilder.badRequest(e);
}
}
public Response deleteEntity(I id) {
try {
T entity = Clazz.newInstance(clazz);
Clazz.setId(entity, id);
Context.getDataManager().remove(entity);
return ResponseBuilder.deleted();
} catch (Exception e) {
return ResponseBuilder.badRequest(e);
}
}
private void validateSecurityContext(String role, I id) {
UserPrincipal userPrincipal = (UserPrincipal) securityContext.getUserPrincipal();
if (!securityContext.isUserInRole(role) && !userPrincipal.getId().equals(id)) {
throw new WebApplicationException(ResponseBuilder.forbidden());
}
}
}
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