usuario.java

package controllers;

import helpers.Redirector;
import helpers.Resource;

import java.io.IOException;
import java.util.List;

import javax.persistence.EntityManager;
import javax.persistence.Query;
import javax.servlet.ServletException;
import javax.servlet.http.HttpServletRequest;
import javax.servlet.http.HttpServletResponse;

import models.Usuario;

public class UsuariosResource extends Resource {

	private static final long serialVersionUID = 1L;
	
	public UsuariosResource() {
		super(new Usuario());
	}
	
	public Object getReference(){
		return super.getReference();
	}
	
	public EntityManager getManager(){
		return super.getManager();
	}
	
	public Redirector getRedirect(){
		return super.getRedirect();
	}
	
	@SuppressWarnings("unchecked")
	protected void doIndex(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		Query query = getManager().createQuery("select u from Usuario u");
		List<Usuario> usuarios = query.getResultList();
		request.setAttribute("usuarios", usuarios);		
		request.getRequestDispatcher("usuarios/index.jsp").forward(request, response);
	}
	
	protected void doShow(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		
		request.setAttribute("usuario", getReference());
		request.getRequestDispatcher("usuarios/show.jsp").forward(request, response);
	}
	
	protected void doNew(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {	
		request.getRequestDispatcher("usuarios/new.jsp").forward(request, response);
	}
	
	protected void doEdit(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {	
		request.setAttribute("usuario", getReference());
		request.getRequestDispatcher("usuarios/edit.jsp").forward(request, response);
	}

	protected void doCreate(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {
		String nome = request.getParameter("nome");
		String login = request.getParameter("login");
		String senha = request.getParameter("senha");
		
		getManager().getTransaction().begin();
		getManager().persist(new Usuario(login, senha, nome));
		getManager().getTransaction().commit();
		
		getRedirect().goTo("Usuarios", "Usuário criado com sucesso!");
	}
	
	protected void doUpdate(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {	
		
		Usuario usuario = (Usuario)getReference();
		
		String nome = request.getParameter("nome");
		String login = request.getParameter("login");
		String senha = request.getParameter("senha");
		
		if (!nome.equalsIgnoreCase("")) usuario.setLogin(nome);
		if (!login.equalsIgnoreCase("")) usuario.setNome(login);
		if (!senha.equalsIgnoreCase("")) usuario.setSenha(senha);
		
		getManager().getTransaction().begin();
		getManager().merge(usuario);
		getManager().getTransaction().commit();
		
		getRedirect().goTo("Usuarios", "Usuário editado com sucesso!");
	
	}
	
	protected void doDestroy(HttpServletRequest request, HttpServletResponse response) throws ServletException, IOException {		

		getManager().getTransaction().begin();
		getManager().remove(getReference());
		getManager().getTransaction().commit();
		
		getRedirect().goTo("Usuarios", "Usuário removido com sucesso!");
		
	}

}