Delete JPA files.

src/main/java/es/uvigo/esei/daa/dao/GenericDAO.java

-package es.uvigo.esei.daa.dao;
-
-import java.lang.reflect.ParameterizedType;
-import java.util.List;
-
-import javax.persistence.EntityManager;
-import javax.persistence.PersistenceContext;
-import javax.persistence.criteria.CriteriaBuilder;
-import javax.persistence.criteria.CriteriaQuery;
-
-public abstract class GenericDAO<T> {
-
-    @PersistenceContext(unitName = "daa-PU")
-    protected EntityManager em;
-
-    protected Class<T> claseEntidad;
-
-    private void establecerClaseEntidad() {
-        this.claseEntidad = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
-    }
-
-    public T crear(T entidad) {
-        em.persist(entidad);
-        return entidad;
-    }
-
-    public T actualizar(T entidad) {
-        return em.merge(entidad);
-    }
-
-    public void eliminar(T entidad) {
-        em.remove(em.merge(entidad));
-    }
-
-    public T buscarPorId(Object id) {
-        if (this.claseEntidad == null) {
-            establecerClaseEntidad();
-        }
-        return em.find(this.claseEntidad, id);
-    }
-
-    public List<T> buscarTodos() {
-        if (this.claseEntidad == null) {
-            establecerClaseEntidad();
-        }
-        
-        CriteriaBuilder builder = em.getCriteriaBuilder();
-        CriteriaQuery<T> query = builder.createQuery(this.claseEntidad);
-        query.select(query.from(this.claseEntidad));
-        return em.createQuery(query).getResultList();
-    }
-
-}

src/main/java/es/uvigo/esei/daa/dao/PetDAO.java

-package es.uvigo.esei.daa.dao;
-
-import es.uvigo.esei.daa.entities.Pet;
-
-public class PetDAO extends GenericDAO<Pet> {
-	
-}

src/main/java/es/uvigo/esei/daa/entities/Pet.java

-package es.uvigo.esei.daa.entities;
-
-import java.io.Serializable;
-import javax.persistence.Column;
-import javax.persistence.Entity;
-import javax.persistence.GeneratedValue;
-import javax.persistence.GenerationType;
-import javax.persistence.Id;
-import javax.persistence.ManyToOne;
-import javax.validation.constraints.Size;
-
-@Entity
-public class Pet implements Serializable {
-	
-	@Id
-    @GeneratedValue(strategy = GenerationType.IDENTITY)
-    Long id;
-	
-	@Size(min = 0, max = 30)
-    @Column(length = 30, nullable = false)
-	String name;
-	
-	@Size(min = 0, max = 30)
-    @Column(length = 30, nullable = false)
-	private String kind;
-	
-	@Size(min = 0, max = 30)
-    @Column(length = 30, nullable = false)
-	private String breed;
-	
-	@ManyToOne
-	Person owner;
-	
-	Pet(){}
-	
-	public Pet(int id, String name, String kind, String breed, Person owner) {
-		this.setName(name);
-		this.setKind(kind);
-		this.setBreed(breed);
-		this.setOwner(owner);
-	}
-	
-	public Long getId() {
-		return id;
-	}
-	
-	public String getName() {
-		return name;
-	}
-	
-	public void setName(String name) {
-		this.name = name;
-	}
-	
-	public String getKind() {
-		return kind;
-	}
-	
-	public void setKind(String kind) {
-		this.kind = kind;
-	}
-	
-	public String getBreed() {
-		return breed;
-	}
-	
-	public void setBreed(String breed) {
-		this.breed = breed;
-	}
-	
-	public Person getOwner() {
-		return owner;
-	}
-	
-	public void setOwner(Person owner) {
-		this.owner = owner;
-	}
-	
-	@Override
-	public int hashCode() {
-		final int prime = 31;
-		int result = 1;
-		result = (int) (prime * result + id);
-		return result;
-	}
-
-	@Override
-	public boolean equals(Object obj) {
-		if (this == obj)
-			return true;
-		if (obj == null)
-			return false;
-		if (!(obj instanceof Pet))
-			return false;
-		Pet other = (Pet) obj;
-		if (id != other.id)
-			return false;
-		return true;
-	}
-}

src/main/java/es/uvigo/esei/daa/rest/PetsResource.java

-package es.uvigo.esei.daa.rest;
-
-import javax.inject.Inject;
-import javax.ws.rs.Consumes;
-import javax.ws.rs.DELETE;
-import javax.ws.rs.GET;
-import javax.ws.rs.POST;
-import javax.ws.rs.PUT;
-import javax.ws.rs.Path;
-import javax.ws.rs.PathParam;
-import javax.ws.rs.Produces;
-import javax.ws.rs.core.Context;
-import javax.ws.rs.core.GenericEntity;
-import javax.ws.rs.core.MediaType;
-import javax.ws.rs.core.Response;
-import javax.ws.rs.core.UriInfo;
-
-import java.net.URI;
-import java.util.List;
-
-import es.uvigo.esei.daa.dao.PetDAO;
-import es.uvigo.esei.daa.entities.Pet;
-
-@Path("/pets")
-@Produces(MediaType.APPLICATION_JSON)
-public class PetsResource {
-	@Inject PetDAO petDAO;
-	
-	@Context
-    private UriInfo uriInfo;
-	
-	public PetsResource() {
-		
-	}
-	
-    @GET
-    @Produces({MediaType.APPLICATION_JSON})
-    public Response searchPets() {
-        List<Pet> pets = petDAO.buscarTodos();
-        GenericEntity<List<Pet>> entidadJSON = new GenericEntity<List<Pet>>(pets) {};
-        return Response.ok(entidadJSON).build();
-    }
-    
-    @GET
-    @Produces({MediaType.APPLICATION_JSON})
-    @Path("{id:[0­9]+}")
-    public Response  buscarAutor(@PathParam("id") Long id) {
-        Pet pet = petDAO.buscarPorId(id);
-        if (pet != null) {
-            return Response.ok(pet).build();
-        } else {
-            return Response.status(Response.Status.NOT_FOUND).build();
-        }
-    }
-	
-    @POST
-    @Consumes({MediaType.APPLICATION_JSON})
-    public Response createPet(Pet pet) {
-        try {
-            Pet newPet = petDAO.crear(pet);
-            URI newPetURI = uriInfo.getAbsolutePathBuilder().path(newPet.getId().toString()).build();
-            return Response.created(newPetURI).build();
-        } catch (Exception e) {
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
-        }
-    }
-    
-    @PUT
-    @Consumes({MediaType.APPLICATION_JSON})
-    @Path("{id:[0­9]+}")
-    public Response updatePet(Pet pet) {
-        try {
-            petDAO.actualizar(pet);
-            return Response.noContent().build();
-        } catch (Exception e) {
-            return Response.status(Response.Status.INTERNAL_SERVER_ERROR).build();
-        }
-    }
-    
-    @DELETE
-    @Path("{id:[0­9]+}")
-    public Response deletePet(@PathParam("id") Long id) {
-        Pet pet = petDAO.buscarPorId(id);
-        if (pet != null) {
-            petDAO.eliminar(pet);
-            return Response.noContent().build();
-        } else {
-            return Response.status(Response.Status.NOT_FOUND).build();
-        }
-    }
-	
-}