@Path("/customers/")
@Stateless
@Produces({"application/xml", "application/json", "text/html"})
public class CustomersResource {
@javax.ejb.EJB
private CustomerResource customerResource;
@Context
protected UriInfo uriInfo;
@PersistenceContext(unitName = "HelloRestPU")
protected EntityManager em;
/** Creates a new instance of CustomersResource */
public CustomersResource() {
}
/**
* Get method for retrieving a collection of Customer instance in XML format.
*
* @return an instance of CustomersConverter
*/
@GET
public CustomersConverter get(@QueryParam("start")
@DefaultValue("0")
int start, @QueryParam("max")
@DefaultValue("10")
int max, @QueryParam("expandLevel")
@DefaultValue("1")
int expandLevel, @QueryParam("query")
@DefaultValue("SELECT e FROM Customer e")
String query) {
return new CustomersConverter(getEntities(start, max, query), uriInfo.getAbsolutePath(), expandLevel);
}
/**
* Post method for creating an instance of Customer using XML as the input format.
*
* @param data an CustomerConverter entity that is deserialized from an XML stream
* @return an instance of CustomerConverter
*/
@POST
@Consumes({"application/xml", "application/json"})
public Response post(CustomerConverter data) {
Customer entity = data.resolveEntity(em);
createEntity(data.resolveEntity(em));
return Response.created(uriInfo.getAbsolutePath().resolve(entity.getIdcustomer() + "/")).build();
}
/**
* Returns a dynamic instance of CustomerResource used for entity navigation.
*
* @return an instance of CustomerResource
*/
@Path("{idcustomer}/")
public CustomerResource getCustomerResource(@PathParam("idcustomer")
Integer id) {
customerResource.setId(id);
customerResource.setEm(em);
return customerResource;
}
/**
* Returns all the entities associated with this resource.
*
* @return a collection of Customer instances
*/
protected Collection<Customer> getEntities(int start, int max, String query) {
return em.createQuery(query).setFirstResult(start).setMaxResults(max).getResultList();
}
/**
* Persist the given entity.
*
* @param entity the entity to persist
*/
protected void createEntity(Customer entity) {
em.persist(entity);
}
}
