notedaohibernate.java

STRUTS数据库项目开发宝典

package com.relationinfo.dao.hibernate;

import java.util.List;

import com.relationinfo.model.Note;
import com.relationinfo.dao.NoteDAO;

import org.hibernate.HibernateException;
import org.hibernate.Session;
import org.hibernate.criterion.Example;
import org.hibernate.criterion.MatchMode;

import org.springframework.orm.ObjectRetrievalFailureException;
import org.springframework.orm.hibernate3.HibernateCallback;

public class NoteDAOHibernate extends BaseDAOHibernate implements NoteDAO {

    /**
     * @see com.relationinfo.dao.NoteDAO#getNotes(com.relationinfo.model.Note)
     */
    public List getNotes(final Note note) {
        if (note == null) {
            return getHibernateTemplate().find("from Note");
        } else {
            // filter on properties set in the note
            HibernateCallback callback = new HibernateCallback() {
                public Object doInHibernate(Session session) throws HibernateException {
                    Example ex = Example.create(note).ignoreCase().enableLike(MatchMode.ANYWHERE);
                    return session.createCriteria(Note.class).add(ex).list();
                }
            };
            return (List) getHibernateTemplate().execute(callback);
        }
    }

    /**
     * @see com.relationinfo.dao.NoteDAO#getNote(String notecode)
     */
    public Note getNote(final String notecode) {
        Note note = (Note) getHibernateTemplate().get(Note.class, notecode);
        if (note == null) {
            log.warn("uh oh, note with notecode '" + notecode + "' not found...");
            throw new ObjectRetrievalFailureException(Note.class, notecode);
        }

        return note;
    }

    /**
     * @see com.relationinfo.dao.NoteDAO#saveNote(Note note)
     */    
    public void saveNote(final Note note) {
        getHibernateTemplate().saveOrUpdate(note);
    }

    /**
     * @see com.relationinfo.dao.NoteDAO#removeNote(String notecode)
     */
    public void removeNote(final String notecode) {
        getHibernateTemplate().delete(getNote(notecode));
    }
}