public function readById($id)
 {
     $entity = null;
     $conexao = null;
     try {
         $conexao = ConnectionManager::getConexao();
         $conexao->beginTransaction();
         $dao = new CoordenadaDAO();
         $entity = $dao->readById($conexao, $id);
         $conexao->commit();
     } catch (Exception $ex) {
         if ($conexao != null) {
             $conexao->rollback();
         }
         echo $ex->getMessage();
     } finally {
         $conexao = null;
     }
     return $entity;
 }
function testeReadById($id)
{
    $conexao = ConnectionManager::getConexao();
    $conexao->beginTransaction();
    $dao = new CoordenadaDAO();
    $entity = $dao->readById($conexao, $id);
    if ($entity == null) {
        $conexao->rollback();
    } else {
        $conexao->commit();
    }
    $conexao = null;
    return $entity;
}