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DAAExample
Commit deea3781 authored by Alejandro's avatar Alejandro
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Adds Pet Resource(REST) 

It adds the communication from frontend <-> backend
parent 00cfce75
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src/main/java/es/uvigo/esei/daa/rest/PetsResource.java 0 → 100644
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package es.uvigo.esei.daa.rest;
import es.uvigo.esei.daa.dao.DAOException;
import es.uvigo.esei.daa.dao.PetDAO;
import es.uvigo.esei.daa.entities.Pet;
import javax.annotation.Generated;
import javax.ws.rs.*;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;
import java.util.logging.Level;
import java.util.logging.Logger;
/**
* REST resource for managing pets.
*
* @author albovy
*/
@Path("/pets")
@Produces(MediaType.APPLICATION_JSON)
public class PetsResource {
private final static Logger LOG = Logger.getLogger(PetsResource.class.getName());
private final PetDAO dao;
/**
* Constructs a new instance of {@link PetsResource}.
*/
public PetsResource(){this(new PetDAO());}
//Needed for testing purposes
PetsResource(PetDAO dao){
this.dao = dao;
}
/**
* Returns a pet with the provided identifier.
*
* @param id the identifier of the pet to retrieve.
* @return a 200 OK response with a pet that has the provided identifier.
* If the identifier does not corresponds with any pet, a 400 Bad Request
* response with an error message will be returned. If an error happens
* while retrieving the list, a 500 Internal Server Error response with an
* error message will be returned.
*/
@GET
@Path("/{id}")
public Response get(
@PathParam("id") int id
){
try{
final Pet pet = this.dao.get(id);
return Response.ok(pet).build();
}catch (IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid pet id in the get method",iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage()).build();
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error getting a pet", e);
return Response.serverError()
.entity(e.getMessage()).build();
}
}
/**
* Returns the complete list of pets stored in the system.
*
* @return a 200 OK response with the complete list of pets stored in the system.
* If an error happens while retrieving the list, a 500 Internal Server Error
* response with an error message will be returned.
*/
/*
@GET
public Response list(){
try{
return Response.ok(this.dao.list()).build();
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error listing pets", e);
return Response.serverError().entity(e.getMessage()).build();
}
}
/**
* Returns the complete list of pets stored in the system from a person.
*
* @param idPeople identifier of a person.
* @return a 200 OK response with the complete list of pets stored in the system from a person.
* If the person does not correspond with any person, a 400 Bad Request Response with
* an error message will be returned.
* If an error happens while retrieving the list, a 500 Internal Server Error
* response with an error message will be returned.
*/
/* @GET
public Response listForPeople(
@QueryParam("idPeople") int idPeople
) {
try {
return Response.ok(this.dao.listForPeople(idPeople)).build();
}catch (IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid idPeople in the list method",iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage())
.build();
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error listing pets from idPeople", e);
return Response.serverError().entity(e.getMessage()).build();
}
}*/
@GET
public Response list(
@QueryParam("idPeople") Integer idPeople
){
try{
if(idPeople == null){
return Response.ok(this.dao.list()).build();
}else{
try {
return Response.ok(this.dao.listForPeople(idPeople)).build();
}catch (IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid idPeople in the list method",iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage())
.build();
}
}
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error listing pets from idPeople", e);
return Response.serverError().entity(e.getMessage()).build();
}
}
/**
* Creates a new pet in the system.
*
* @param name the name of the pet.
* @param type the specie of the pet.
* @param person owner of the pet.
* @return a 200 OK response with a pet that has been created. If the
* name, type or the person are not provided, a 400 Bad Request response with an
* error message will be returned. If an error happens while retrieving the
* list, a 500 Internal Server Error response with an error message will be
* returned.
*/
@POST
public Response add(
@FormParam("name") String name,
@FormParam("type") String type,
@FormParam("person") Integer person
){
try{
final Pet newPet = this.dao.add(name,type,person);
return Response.ok(newPet).build();
}catch(IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid pet id in add method",iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage())
.build();
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error adding a pet", e);
return Response.serverError()
.entity(e.getMessage())
.build();
}
}
/**
* Modifies the data of a pet
*
* @param id identifier of the pet to modify.
* @param name the new name of the pet.
* @param type the new specie of the pet.
* @param person the new owner of the pet.
* @return a 200 OK response with a pet that has been modified. If the
* identifier does not corresponds with any pet or the name, type or person
* are not provided, a 400 Bad Request response with an error message will
* be returned. If an error happens while retrieving the list, a 500 Internal
* Server Error response with an error message will be returned.
*/
@PUT
@Path("/{id}")
public Response modify(
@PathParam("id") int id,
@FormParam("name") String name,
@FormParam("type") String type,
@FormParam("person") Integer person
){
try{
final Pet modifiedPet = new Pet(id,name,type,person);
this.dao.modify(modifiedPet);
return Response.ok(modifiedPet).build();
}catch (NullPointerException npe){
final String message = String.format("Invalid data for pet (name: %s, type: %s, person: %d)",name,type,person);
LOG.log(Level.FINE, message);
return Response.status(Response.Status.BAD_REQUEST)
.entity(message)
.build();
}catch (IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid pet id in modify method", iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage())
.build();
}catch (DAOException e){
LOG.log(Level.SEVERE,"Error modifying a pet", e);
return Response.serverError()
.entity(e.getMessage())
.build();
}
}
/**
* Deletes a pet from the system
*
* @param id the identifier of the pet to be deleted.
* @return a 200 OK response with the identifier of the person that has
* been deleted. If the identifier does not corresponds with any pet, a
* 400 Bad Request response with an error message will be returned. If an error
* happens while retrieving the list, a 500 Internal Server Error response
* with an error message will be returned.
*/
@DELETE
@Path("/{id}")
public Response delete(
@PathParam("id") int id
){
try{
this.dao.delete(id);
return Response.ok(id).build();
}catch (IllegalArgumentException iae){
LOG.log(Level.FINE,"Invalid pet id in delete method", iae);
return Response.status(Response.Status.BAD_REQUEST)
.entity(iae.getMessage())
.build();
}catch (DAOException e){
LOG.log(Level.FINE,"Error deleting a pet", e);
return Response.serverError()
.entity(e.getMessage())
.build();
}
}
}
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