data record does not display after following this example

I am new with Spring + Hibernate +icefaces with MyEclipse 7. I might have a problem with a DAO: no error message but I cannot see any data record in IceFaces page;
would you help me

I am using:
– MyEclipse Derby as database
– myEclipse 7 Bench
– Spring 2.5
– Hibernate 3.2

//CustomerDAO

package com;

skip for import libraries

public class CustomerDAO extends HibernateDaoSupport {
    private static final Log log = LogFactory.getLog(CustomerDAO.class);
    // property constants
    public static final String CUSTOMERNAME = "customername";
    public static final String CONTACTLASTNAME = "contactlastname";
    public static final String CONTACTFIRSTNAME = "contactfirstname";
    public static final String PHONE = "phone";
    public static final String ADDRESSLINE1 = "addressline1";
    public static final String ADDRESSLINE2 = "addressline2";
    public static final String CITY = "city";
    public static final String STATE = "state";
    public static final String POSTALCODE = "postalcode";
    public static final String COUNTRY = "country";
    public static final String SALESREPEMPLOYEENUMBER = "salesrepemployeenumber";
    public static final String CREDITLIMIT = "creditlimit";

    protected void initDao() {
        // do nothing
    }
    private EntityManager getEntityManager() {
        return EntityManagerHelper.getEntityManager();
    }
    public void save(Customer transientInstance) {
        log.debug("saving Customer instance");
        try {
            getHibernateTemplate().save(transientInstance);
            log.debug("save successful");
        } catch (RuntimeException re) {
            log.error("save failed", re);
            throw re;
        }
    }

    public void delete(Customer persistentInstance) {
        log.debug("deleting Customer instance");
        try {
            getHibernateTemplate().delete(persistentInstance);
            log.debug("delete successful");
        } catch (RuntimeException re) {
            log.error("delete failed", re);
            throw re;
        }
    }
    public Customer update(Customer detachedInstance) {
        EntityManagerHelper.log("updating Customer instance", Level.INFO, null);
        try {
            Customer result = getEntityManager().merge(detachedInstance);
            EntityManagerHelper.log("update successful", Level.INFO, null);
            return result;
        } catch (RuntimeException re) {
            EntityManagerHelper.log("update failed", Level.SEVERE, re);
            throw re;
        }
    }
    public Customer findById(java.lang.Integer id) {
        log.debug("getting Customer instance with id: " + id);
        try {
            Customer instance = (Customer) getHibernateTemplate().get(
                    "com.Customer", id);
            return instance;
        } catch (RuntimeException re) {
            log.error("get failed", re);
            throw re;
        }
    }

    public List findByExample(Customer instance) {
        log.debug("finding Customer instance by example");
        try {
            List results = getHibernateTemplate().findByExample(instance);
            log.debug("find by example successful, result size: "
                    + results.size());
            return results;
        } catch (RuntimeException re) {
            log.error("find by example failed", re);
            throw re;
        }
    }

    public List findByProperty(String propertyName, Object value) {
        log.debug("finding Customer instance with property: " + propertyName
                + ", value: " + value);
        try {
            String queryString = "from Customer as model where model."
                    + propertyName + "= ?";
            return getHibernateTemplate().find(queryString, value);
        } catch (RuntimeException re) {
            log.error("find by property name failed", re);
            throw re;
        }
    }

    public List findByCustomername(Object customername) {
        return findByProperty(CUSTOMERNAME, customername);
    }

    public List findByContactlastname(Object contactlastname) {
        return findByProperty(CONTACTLASTNAME, contactlastname);
    }

    public List findByContactfirstname(Object contactfirstname) {
        return findByProperty(CONTACTFIRSTNAME, contactfirstname);
    }

    public List findByPhone(Object phone) {
        return findByProperty(PHONE, phone);
    }

    public List findByAddressline1(Object addressline1) {
        return findByProperty(ADDRESSLINE1, addressline1);
    }

    public List findByAddressline2(Object addressline2) {
        return findByProperty(ADDRESSLINE2, addressline2);
    }

    public List findByCity(Object city) {
        return findByProperty(CITY, city);
    }

    public List findByState(Object state) {
        return findByProperty(STATE, state);
    }

    public List findByPostalcode(Object postalcode) {
        return findByProperty(POSTALCODE, postalcode);
    }

    public List findByCountry(Object country) {
        return findByProperty(COUNTRY, country);
    }

    public List findBySalesrepemployeenumber(Object salesrepemployeenumber) {
        return findByProperty(SALESREPEMPLOYEENUMBER, salesrepemployeenumber);
    }

    public List findByCreditlimit(Object creditlimit) {
        return findByProperty(CREDITLIMIT, creditlimit);
    }

    public List findAll() {
        log.debug("finding all Customer instances");
        try {
            String queryString = "from Customer";
            return getHibernateTemplate().find(queryString);
        } catch (RuntimeException re) {
            log.error("find all failed", re);
            throw re;
        }
    }

    public Customer merge(Customer detachedInstance) {
        log.debug("merging Customer instance");
        try {
            Customer result = (Customer) getHibernateTemplate().merge(
                    detachedInstance);
            log.debug("merge successful");
            return result;
        } catch (RuntimeException re) {
            log.error("merge failed", re);
            throw re;
        }
    }

    public void attachDirty(Customer instance) {
        log.debug("attaching dirty Customer instance");
        try {
            getHibernateTemplate().saveOrUpdate(instance);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public void attachClean(Customer instance) {
        log.debug("attaching clean Customer instance");
        try {
            getHibernateTemplate().lock(instance, LockMode.NONE);
            log.debug("attach successful");
        } catch (RuntimeException re) {
            log.error("attach failed", re);
            throw re;
        }
    }

    public static CustomerDAO getFromApplicationContext(ApplicationContext ctx) {
        return (CustomerDAO) ctx.getBean("CustomerDAO");
    }
}