Struts+Hibernate完成的Tree(公司机构)

package com.tree.dao; import java.util.List; import org.apache.commons.logging.Log; import org.apache.commons.logging.LogFactory; import org.hibernate.LockMode; import org.hibernate.Query; import org.hibernate.criterion.Example; /** * A data access object (DAO) providing persistence and search support for Org * entities. Transaction control of the save(), update() and delete() operations * can directly support Spring container-managed transactions or they can be * augmented to handle user-managed Spring transactions. Each of these methods * provides additional information for how to configure it for the desired type * of transaction control. * * @see com.tree.dao.Org * @author MyEclipse Persistence Tools */ public class OrgDAO extends BaseHibernateDAO { private static final Log log = LogFactory.getLog(OrgDAO.class); // property constants public static final String NAME = "name"; public static final String PID = "pid"; public static final String URL = "url"; public void save(Org transientInstance) { log.debug("saving Org instance"); try { getSession().save(transientInstance); log.debug("save successful"); } catch (RuntimeException re) { log.error("save failed", re); throw re; } } public void delete(Org persistentInstance) { log.debug("deleting Org instance"); try { getSession().delete(persistentInstance); log.debug("delete successful"); } catch (RuntimeException re) { log.error("delete failed", re); throw re; } } public Org findById(java.lang.Integer id) { log.debug("getting Org instance with id: " + id); try { Org instance = (Org) getSession().get("com.tree.dao.Org", id); return instance; } catch (RuntimeException re) { log.error("get failed", re); throw re; } } public List findByExample(Org instance) { log.debug("finding Org instance by example"); try { List results = getSession().createCriteria("com.tree.dao.Org").add( Example.create(instance)).list(); 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 Org instance with property: " + propertyName + ", value: " + value); try { String queryString = "from Org as model where model." + propertyName + "= ?"; Query queryObject = getSession().createQuery(queryString); queryObject.setParameter(0, value); return queryObject.list(); } catch (RuntimeException re) { log.error("find by property name failed", re); throw re; } } public List findByName(Object name) { return findByProperty(NAME, name); } public List findByPid(Object pid) { return findByProperty(PID, pid); } public List findByUrl(Object url) { return findByProperty(URL, url); } @SuppressWarnings("unchecked") public List findAll() { log.debug("finding all Org instances"); try { String queryString = "from Org"; Query queryObject = getSession().createQuery(queryString); return queryObject.list(); } catch (RuntimeException re) { log.error("find all failed", re); throw re; } } public Org merge(Org detachedInstance) { log.debug("merging Org instance"); try { Org result = (Org) getSession().merge(detachedInstance); log.debug("merge successful"); return result; } catch (RuntimeException re) { log.error("merge failed", re); throw re; } } public void attachDirty(Org instance) { log.debug("attaching dirty Org instance"); try { getSession().saveOrUpdate(instance); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } public void attachClean(Org instance) { log.debug("attaching clean Org instance"); try { getSession().lock(instance, LockMode.NONE); log.debug("attach successful"); } catch (RuntimeException re) { log.error("attach failed", re); throw re; } } }