FabricaWSnew

package servicos;

import com.fasterxml.jackson.core.JsonProcessingException;
import com.fasterxml.jackson.databind.ObjectMapper;
import java.util.List;
import java.util.logging.Level;
import java.util.logging.Logger;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.ws.rs.Produces;
import javax.ws.rs.Consumes;
import javax.ws.rs.Path;
import modelo.Marca;
import javax.persistence.PersistenceContext;
import javax.ws.rs.GET;
import javax.ws.rs.PUT;
import javax.ws.rs.PathParam;
import javax.ws.rs.core.MediaType;
import javax.ws.rs.core.Response;

@Stateless
@Path("marcas")
public class MarcaResource {

    @PersistenceContext(unitName="FabricaWSPU")
    private EntityManager manager;
    private final ObjectMapper mapper = new ObjectMapper();
    private Marca marca = new Marca();


    public MarcaResource() {
    }

    @PUT
    @Path("insere")
    @Consumes("application/json")
    public Response insertMarca(String json) {
        try {
            marca = mapper.readValue(json,Marca.class);
            manager.persist(marca);
        } catch (Exception ex) {
            Logger.getLogger(MarcaResource.class.getName()).log(Level.SEVERE, null, ex);
            return Response.status(500).build();
        }
        return Response.status(201).build();
    }

    @PUT
    @Path("altera")
    @Consumes("application/json")
    public Response updateMarca(String json) {
        try {
            marca = mapper.readValue(json,Marca.class);
            manager.merge(marca);
        } catch (Exception ex) {
            Logger.getLogger(MarcaResource.class.getName()).log(Level.SEVERE, null, ex);
            return Response.status(500).build();
        }
        return Response.status(201).build();
    }

    @PUT
    @Path("elimina/{id}")
    public Response deleteMarca(@PathParam("id") String id) {
        try {
            manager.remove(manager.find(Marca.class, Long.parseLong(id)));
        } catch (Exception ex) {
            Logger.getLogger(MarcaResource.class.getName()).log(Level.SEVERE, null, ex);
            return Response.status(500).build();
        }
        return Response.status(200).build();
    }

    @GET
    @Path("buscamarca/{id}")
    @Produces("application/json")
    public Response getMarca(@PathParam("id") String id){
        String saidajson = null;
        try {
            marca = manager.find(Marca.class,Long.parseLong(id));
            saidajson = mapper.writeValueAsString(marca);
        } catch (NumberFormatException | JsonProcessingException ex) {
            Logger.getLogger(MarcaResource.class.getName()).log(Level.SEVERE, null, ex);
        }
        return Response.ok(saidajson,MediaType.APPLICATION_JSON).build();
    }

    @GET
    @Path("listamarcas")
    @Produces("application/json")
    public Response getMarcas(){
      List<Marca> marcas = manager.createNamedQuery("Marca.listar").getResultList();
      String saidajson = null;
        try {
            saidajson = mapper.writeValueAsString(marcas);
        } catch (JsonProcessingException ex) {
            Logger.getLogger(MarcaResource.class.getName()).log(Level.SEVERE, null, ex);
            Response.status(500).build();
        }
      return Response.ok(saidajson,MediaType.APPLICATION_JSON).build();
    }
}