memberdaohibernate.java

Struts数据库项目中的一个实例

package com.relationinfo.dao.hibernate;

import java.util.List;

import com.relationinfo.model.Member;
import com.relationinfo.dao.MemberDAO;

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 MemberDAOHibernate extends BaseDAOHibernate implements MemberDAO {

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

    /**
     * @see com.relationinfo.dao.MemberDAO#getMember(String memberid)
     */
    public Member getMember(final String memberid) {
        Member member = (Member) getHibernateTemplate().get(Member.class, memberid);
        if (member == null) {
            log.warn("uh oh, member with memberid '" + memberid + "' not found...");
            throw new ObjectRetrievalFailureException(Member.class, memberid);
        }

        return member;
    }

    /**
     * @see com.relationinfo.dao.MemberDAO#saveMember(Member member)
     */    
    public void saveMember(final Member member) {
        getHibernateTemplate().saveOrUpdate(member);
    }

    /**
     * @see com.relationinfo.dao.MemberDAO#removeMember(String memberid)
     */
    public void removeMember(final String memberid) {
        getHibernateTemplate().delete(getMember(memberid));
    }
}