sysdiagramsdao.java

对入学者很实用用JAVA的基本语言写的

package lxl;

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;

/**
 * Data access object (DAO) for domain model class Sysdiagrams.
 * 
 * @see lxl.Sysdiagrams
 * @author MyEclipse Persistence Tools
 */

public class SysdiagramsDAO extends BaseHibernateDAO {
	private static final Log log = LogFactory.getLog(SysdiagramsDAO.class);

	// property constants
	public static final String NAME = "name";

	public static final String PRINCIPAL_ID = "principalId";

	public static final String VERSION = "version";

	public static final String DEFINITION = "definition";

	public void save(Sysdiagrams transientInstance) {
		log.debug("saving Sysdiagrams instance");
		try {
			getSession().save(transientInstance);
			log.debug("save successful");
		} catch (RuntimeException re) {
			log.error("save failed", re);
			throw re;
		}
	}

	public void delete(Sysdiagrams persistentInstance) {
		log.debug("deleting Sysdiagrams instance");
		try {
			getSession().delete(persistentInstance);
			log.debug("delete successful");
		} catch (RuntimeException re) {
			log.error("delete failed", re);
			throw re;
		}
	}

	public Sysdiagrams findById(java.lang.Integer id) {
		log.debug("getting Sysdiagrams instance with id: " + id);
		try {
			Sysdiagrams instance = (Sysdiagrams) getSession().get(
					"lxl.Sysdiagrams", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Sysdiagrams instance) {
		log.debug("finding Sysdiagrams instance by example");
		try {
			List results = getSession().createCriteria("lxl.Sysdiagrams").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 Sysdiagrams instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Sysdiagrams 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 findByPrincipalId(Object principalId) {
		return findByProperty(PRINCIPAL_ID, principalId);
	}

	public List findByVersion(Object version) {
		return findByProperty(VERSION, version);
	}

	public List findByDefinition(Object definition) {
		return findByProperty(DEFINITION, definition);
	}

	public List findAll() {
		log.debug("finding all Sysdiagrams instances");
		try {
			String queryString = "from Sysdiagrams";
			Query queryObject = getSession().createQuery(queryString);
			return queryObject.list();
		} catch (RuntimeException re) {
			log.error("find all failed", re);
			throw re;
		}
	}

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

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

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