/**
* Copyright (C) 2012 KRM Associates, Inc. healtheme@krminc.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 com.krminc.phr.api.service;
import com.krminc.phr.api.converter.UserConverter;
import com.krminc.phr.api.service.clinical.ResourcesResource;
import com.krminc.phr.dao.PersistenceService;
import com.krminc.phr.domain.Address;
import com.krminc.phr.domain.User;
import com.sun.jersey.api.core.ResourceContext;
import java.util.List;
import javax.persistence.NoResultException;
import javax.persistence.EntityManager;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.DELETE;
import javax.ws.rs.Produces;
import javax.ws.rs.Consumes;
import javax.ws.rs.Path;
import javax.ws.rs.core.Context;
import javax.ws.rs.core.UriInfo;
import javax.ws.rs.WebApplicationException;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import javax.ws.rs.core.Response.Status;
import org.codehaus.jettison.json.JSONException;
import org.codehaus.jettison.json.JSONObject;
import org.slf4j.Logger;
import org.slf4j.LoggerFactory;
/**
* User API RESTful resource class and mapping.
*
* @author Daniel Shaw (dshaw.com)
*/
public class UserResource {
final Logger logger = LoggerFactory.getLogger(UserResource.class);
@Context
protected UriInfo uriInfo;
@Context
protected ResourceContext resourceContext;
protected Long userId;
protected String username;
public UserResource() {
}
public void setId(Long userId) {
this.userId = userId;
}
public void setUsername(String username) {
this.username = username;
}
/**
* Get method for retrieving an instance of User identified by id in XML format.
*
* @return an instance of UserConverter
*/
@GET
@Produces({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public UserConverter get() {
PersistenceService persistenceSvc = PersistenceService.getInstance();
try {
persistenceSvc.beginTx();
User user = null;
if (username != null) {
user = getEntityByUsername();
} else {
user = getEntity();
}
return new UserConverter(user, uriInfo.getAbsolutePath(), Api.DEFAULT_EXPAND_LEVEL);
} finally {
PersistenceService.getInstance().close();
}
}
/**
* Put method for updating an instance of User identified by id using XML as the input format.
*
* @param userId identifier for the entity
* @param data an UserConverter entity that is deserialized from a XML stream
*/
@PUT
@Consumes({ MediaType.APPLICATION_JSON, MediaType.APPLICATION_XML })
public void put(UserConverter data) {
PersistenceService persistenceSvc = PersistenceService.getInstance();
try {
persistenceSvc.beginTx();
EntityManager em = persistenceSvc.getEntityManager();
updateEntity(getEntity(), data.resolveEntity(em));
persistenceSvc.commitTx();
} finally {
persistenceSvc.close();
}
}
/**
* Delete method for deleting an instance of User identified by id.
*
* @param userId identifier for the entity
*/
@DELETE
public void delete() {
PersistenceService persistenceSvc = PersistenceService.getInstance();
try {
persistenceSvc.beginTx();
deleteEntity(getEntity());
persistenceSvc.commitTx();
} finally {
persistenceSvc.close();
}
}
/**
* @return a users Login Count (total number of logins).
*/
@Path("logincount/")
@GET
@Produces({ MediaType.APPLICATION_JSON })
public JSONObject getLoginCount() {
JSONObject jsonResult = new JSONObject();
try {
jsonResult.put("logincount", getEntity().getTotalLogin());
}
catch (JSONException ex) {
throw new WebApplicationException(Status.NOT_FOUND);
}
return jsonResult;
}
/**
* @return a users Login Count (total number of logins).
*/
@Path("available/")
@GET
@Produces({ MediaType.APPLICATION_JSON })
public JSONObject getUsernameAvailable() {
PersistenceService persistenceSvc = PersistenceService.getInstance();
try {
persistenceSvc.beginTx();
EntityManager em = persistenceSvc.getEntityManager();
try {
Long uId = (Long) em.createNamedQuery("User.findUserIdByUsername")
.setParameter("username", username)
.getSingleResult();
/*
* Username is already assigned to a user.
*/
throw new WebApplicationException(Status.CONFLICT);
} catch (NoResultException ex) {
/*
* Username available.
*/
try {
JSONObject jsonResult = new JSONObject();
jsonResult.put("available", true);
return jsonResult;
} catch (JSONException je) {
throw new WebApplicationException(new Throwable("JSON Error"),
Status.INTERNAL_SERVER_ERROR);
}
}
} finally {
PersistenceService.getInstance().close();
}
}
@Path("password/")
@PUT
@Consumes({ MediaType.APPLICATION_JSON })
public void setPassword(JSONObject json) throws JSONException {
String password = (String) json.get("password");
if (password == null || password.length() == 0) {
throw new WebApplicationException(Response.Status.BAD_REQUEST);
}
PersistenceService persistenceSvc = PersistenceService.getInstance();
try {
persistenceSvc.beginTx();
User updatedUser = getEntity();
updatedUser.setPassword(password);
updatedUser.setRequiresReset(Boolean.TRUE);
updateEntity(getEntity(), updatedUser);
persistenceSvc.commitTx();
} finally {
persistenceSvc.close();
}
}
/**
* @return a dynamic instance of UserHealthRecordsResource used for entity navigation.
*/
@Path("healthrecords/")
public UserHealthRecordsResource getUserHealthRecordsResource() {
UserHealthRecordsResource resource = resourceContext.getResource(UserHealthRecordsResource.class);
resource.setUserId(userId);
return resource;
}
/**
* @return a dynamic instance of ResourcesResource used for entity navigation.
*/
@Path("resources/")
public ResourcesResource getResourcesResource() {
ResourcesResource resource = resourceContext.getResource(ResourcesResource.class);
return resource;
}
/**
* Returns an instance of User identified by id.
*
* @param userId identifier for the entity
* @return an instance of User
*/
protected User getEntity() {
EntityManager em = PersistenceService.getInstance().getEntityManager();
try {
return (User) em.find(User.class, userId);
} catch (NoResultException ex) {
throw new WebApplicationException(new Throwable("Resource for " + uriInfo.getAbsolutePath() + " does not exist."), 404);
}
}
/**
* @return an instance of User identified by username.
*/
protected User getEntityByUsername() {
EntityManager em = PersistenceService.getInstance().getEntityManager();
try {
return (User) em.createNamedQuery("User.findByUsername")
.setParameter("username", username)
.getSingleResult();
} catch (NoResultException ex) {
throw new WebApplicationException(
new Throwable("Resource for " + uriInfo.getAbsolutePath() + " does not exist."),
Status.NOT_FOUND
);
}
}
/**
* Updates entity using data from newEntity.
*
* @param entity the entity to update
* @param newEntity the entity containing the new data
* @return the updated entity
*/
protected User updateEntity(User entity, User newEntity) {
EntityManager em = PersistenceService.getInstance().getEntityManager();
List<Address> addresses = entity.getAddresses();
List<Address> addressesNew = newEntity.getAddresses();
entity = em.merge(newEntity);
for (Address value : addresses) {
if (!addressesNew.contains(value)) {
throw new WebApplicationException(new Throwable("Cannot remove items from addresses"));
}
}
for (Address value : addressesNew) {
if (!addresses.contains(value)) {
User oldEntity = value.getUser();
value.setUser(entity);
if (oldEntity != null && !oldEntity.equals(entity)) {
oldEntity.getAddresses().remove(value);
}
}
}
return entity;
}
/**
* Deletes the entity.
*
* @param entity the entity to deletle
*/
protected void deleteEntity(User entity) {
EntityManager em = PersistenceService.getInstance().getEntityManager();
if (!entity.getAddresses().isEmpty()) {
throw new WebApplicationException(new Throwable("Cannot delete entity because addresses is not empty."));
}
em.remove(entity);
}
}