bookdao.java

经典的spring+hibernate+dwr的整合开发 使项目中的开发利器

package edu.jlu.fuliang.dao;

import java.util.List;
import org.apache.commons.logging.Log;
import org.apache.commons.logging.LogFactory;
import org.hibernate.LockMode;
import org.springframework.context.ApplicationContext;
import org.springframework.orm.hibernate3.support.HibernateDaoSupport;

import edu.jlu.fuliang.domain.Book;

/**
 * Data access object (DAO) for domain model class Book.
 * 
 * @see edu.jlu.fuliang.domain.Book
 * @author MyEclipse Persistence Tools
 */

public class BookDAO extends HibernateDaoSupport {
	private static final Log log = LogFactory.getLog(BookDAO.class);
	// property constants
	public static final String NAME = "name";
	public static final String ISBM = "isbm";
	public static final String AUTHOR = "author";

	protected void initDao() {
		// do nothing
	}

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

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

	public Book findById(java.lang.Long id) {
		log.debug("getting Book instance with id: " + id);
		try {
			Book instance = (Book) getHibernateTemplate().get(
					"edu.jlu.fuliang.domain.Book", id);
			return instance;
		} catch (RuntimeException re) {
			log.error("get failed", re);
			throw re;
		}
	}

	public List findByExample(Book instance) {
		log.debug("finding Book 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 Book instance with property: " + propertyName
				+ ", value: " + value);
		try {
			String queryString = "from Book 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 findByName(Object name) {
		return findByProperty(NAME, name);
	}

	public List findByIsbm(Object isbm) {
		return findByProperty(ISBM, isbm);
	}

	public List findByAuthor(Object author) {
		return findByProperty(AUTHOR, author);
	}

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

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

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

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

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