<?php

class My_Service {
  function create($data) {
    try {
      $this->getDao()->getMapper()->insert($data);
    } catch(Exception $e) {
      // How should I handle this exception?
    }
  }
}

class My_Controller {
  function indexAction() {
    $service = new My_Service();
    if($service->create(array())) {
      //display specific error
    };
  }
}