hibernate 操作 模板基类设计
来源:互联网 发布:硬盘不能识别数据恢复 编辑:程序博客网 时间:2024/05/17 01:08
把hibernate 的操作集成在基类当中,可以减少很多的工作量
第一步: 操作接口
IGenericDao.java
所用的集成操作 增删改查
- package com.ssh.common.dao;
- /**
- * 功能:hibernate 操作 模板基类设计
- *
- * @author programming
- * @version 1.0 2009-3-10下午04:35:34
- * @JDK 5
- */
- import java.io.Serializable;
- import java.util.Collection;
- import java.util.List;
- import org.hibernate.LockMode;
- import org.hibernate.criterion.DetachedCriteria;
- import org.springframework.dao.DataAccessException;
- import com.ssh.common.util.PaginationSupport;
- public interface IGenericDao<T, ID extends Serializable> {
- public T load(ID id) throws DataAccessException;
- public T get(ID id) throws DataAccessException;
- public boolean contains(T t) throws DataAccessException;
- public void refresh(T t, LockMode lockMode) throws DataAccessException;
- public void refresh(T t) throws DataAccessException;
- public Serializable save(T t) throws DataAccessException;
- public void saveOrUpdate(T t) throws DataAccessException;
- public void saveOrUpdateAll(Collection<T> entities) throws DataAccessException;
- public void update(T t, LockMode lockMode) throws DataAccessException;
- public void update(T t) throws DataAccessException;
- public void delete(T t, LockMode lockMode) throws DataAccessException;
- public void delete(T t) throws DataAccessException;
- public void deleteAll(Collection<T> entities) throws DataAccessException;
- public List<T> find(String queryString, Object value) throws DataAccessException;
- public List<T> find(String queryString, Object[] values) throws DataAccessException;
- public List<T> find(String queryString) throws DataAccessException;
- public List<T> list() throws DataAccessException;
- public List<T> findByNamedQuery(String queryName) throws DataAccessException;
- public List<T> findByNamedQuery(String queryName, Object value) throws DataAccessException;
- public List<T> findByNamedQuery(String queryName, Object[] values) throws DataAccessException;
- public PaginationSupport findPageByCriteria(final DetachedCriteria detachedCriteria, final int pageSize,
- final int startIndex);
- public PaginationSupport findPageByQuery(final String hql, final String countHql, final int pageSize,
- final int startIndex);
- }
实现此接口的反射类
GenericDao.java
- package com.ssh.common.dao;
- /**
- * 功能:
- *
- * @author programming
- * @version 1.0 2009-3-10下午04:36:22
- * @JDK 5
- */
- import java.io.Serializable;
- import java.lang.reflect.ParameterizedType;
- import java.sql.SQLException;
- import java.util.Collection;
- import java.util.List;
- import org.apache.commons.logging.Log;
- import org.apache.commons.logging.LogFactory;
- import org.hibernate.Criteria;
- import org.hibernate.HibernateException;
- import org.hibernate.LockMode;
- import org.hibernate.Query;
- import org.hibernate.Session;
- import org.hibernate.criterion.DetachedCriteria;
- import org.hibernate.criterion.Projections;
- import org.springframework.dao.DataAccessException;
- import org.springframework.orm.hibernate3.HibernateCallback;
- import org.springframework.orm.hibernate3.support.HibernateDaoSupport;
- import com.ssh.common.util.PaginationSupport;
- @SuppressWarnings("unchecked")
- public class GenericDao<T, ID extends Serializable> extends HibernateDaoSupport implements IGenericDao<T, ID> {
- private Log logger = LogFactory.getLog(getClass());
- protected Class<T> entityClass;
- public GenericDao() {
- }
- protected Class getEntityClass() {
- if (entityClass == null) {
- entityClass = (Class<T>) ((ParameterizedType) getClass().getGenericSuperclass()).getActualTypeArguments()[0];
- logger.debug("T class = " + entityClass.getName());
- }
- return entityClass;
- }
- public void saveOrUpdate(T t) throws DataAccessException {
- this.getHibernateTemplate().saveOrUpdate(t);
- }
- public T load(ID id) throws DataAccessException {
- T load = (T) getHibernateTemplate().load(getEntityClass(), id);
- return load;
- }
- public T get(ID id) throws DataAccessException {
- T load = (T) getHibernateTemplate().get(getEntityClass(), id);
- return load;
- }
- public boolean contains(T t) throws DataAccessException {
- return getHibernateTemplate().contains(t);
- }
- public void delete(T t, LockMode lockMode) throws DataAccessException {
- getHibernateTemplate().delete(t, lockMode);
- }
- public void delete(T t) throws DataAccessException {
- getHibernateTemplate().delete(t);
- }
- public void deleteAll(Collection<T> entities) throws DataAccessException {
- getHibernateTemplate().deleteAll(entities);
- }
- public List<T> find(String queryString, Object value) throws DataAccessException {
- List<T> find = (List<T>) getHibernateTemplate().find(queryString, value);
- return find;
- }
- public List<T> find(String queryString, Object[] values) throws DataAccessException {
- List<T> find = (List<T>) getHibernateTemplate().find(queryString, values);
- return find;
- }
- public List<T> find(String queryString) throws DataAccessException {
- return (List<T>) getHibernateTemplate().find(queryString);
- }
- public void refresh(T t, LockMode lockMode) throws DataAccessException {
- getHibernateTemplate().refresh(t, lockMode);
- }
- public void refresh(T t) throws DataAccessException {
- getHibernateTemplate().refresh(t);
- }
- public Serializable save(T t) throws DataAccessException {
- return getHibernateTemplate().save(t);
- }
- public void saveOrUpdateAll(Collection<T> entities) throws DataAccessException {
- getHibernateTemplate().saveOrUpdateAll(entities);
- }
- public void update(T t, LockMode lockMode) throws DataAccessException {
- getHibernateTemplate().update(t, lockMode);
- }
- public void update(T t) throws DataAccessException {
- getHibernateTemplate().update(t);
- }
- public List<T> list() throws DataAccessException {
- return getHibernateTemplate().loadAll(getEntityClass());
- }
- public List<T> findByNamedQuery(String queryName) throws DataAccessException {
- return getHibernateTemplate().findByNamedQuery(queryName);
- }
- public List<T> findByNamedQuery(String queryName, Object value) throws DataAccessException {
- return getHibernateTemplate().findByNamedQuery(queryName, value);
- }
- public List<T> findByNamedQuery(String queryName, Object[] values) throws DataAccessException {
- return getHibernateTemplate().findByNamedQuery(queryName, values);
- }
- public PaginationSupport findPageByCriteria(final DetachedCriteria detachedCriteria, final int pageSize,
- final int startIndex) {
- return (PaginationSupport) getHibernateTemplate().execute(new HibernateCallback() {
- public Object doInHibernate(Session session) throws HibernateException {
- Criteria criteria = detachedCriteria.getExecutableCriteria(session);
- int totalCount = ((Integer) criteria.setProjection(Projections.rowCount()).uniqueResult()).intValue();
- criteria.setProjection(null);
- List items = criteria.setFirstResult(startIndex).setMaxResults(pageSize).list();
- PaginationSupport ps = new PaginationSupport(items, totalCount, pageSize, startIndex);
- return ps;
- }
- }, true);
- }
- public PaginationSupport findPageByQuery(final String hql, final String countHql, final int pageSize,
- final int startIndex) {
- return (PaginationSupport) getHibernateTemplate().execute(new HibernateCallback() {
- public Object doInHibernate(Session session) throws HibernateException, SQLException {
- int totalCount = ((Integer) session.createQuery(countHql).iterate().next()).intValue();
- Query query = session.createQuery(hql);
- query.setFirstResult(startIndex);
- query.setMaxResults(pageSize);
- List items = query.list();
- PaginationSupport ps = new PaginationSupport(items, totalCount, pageSize, startIndex);
- return ps;
- }
- }, true);
- }
- }
由此基类可以节省很多的工作
- public class UserDao extends GenericDao<User, Integer> implements IUserDao {}
- public class BookDao extends GenericDao<Book, Integer> implements IBookDao {}
以此类推
更容易容缩代码
欢迎大家批阅,
有更好的设计发出来看一下,我们一起学习,一起进步
- hibernate 操作 模板基类设计
- hibernate 操作 模板基类设计 .
- hibernate 数据库操作模板
- Hibernate 操作数据库模板代码
- hibernate 操作基类
- spring_HibernateTemplate(Hibernate模板)_模版设计模式
- hibernate 模板类
- 使用模板模式简化DAO操作Hibernate
- 使用模板模式简化DAO操作Hibernate
- 用模板模式简化DAO操作Hibernate
- 用模板模式简化DAO操作Hibernate
- 使用模板模式简化DAO操作Hibernate
- 使用模板模式简化DAO操作Hibernate
- 编程操作hibernate框架(模板)(开发模板)
- Struts+Hibernate模板开发笔记---设计模式:单例
- Struts+Hibernate模板开发笔记---设计模式:门面
- Struts+Hibernate模板开发笔记---设计模式:MVC
- Struts+Hibernate模板开发笔记---设计模式:DAO
- Android打造个性十足的组件技术之复合组件
- XP系统主要15个系统进程
- HDU1254(广搜+深搜)
- 完美解决 ubuntu 配置环境变量后不能登录
- 学习笔记2011.4.30
- hibernate 操作 模板基类设计
- 3750 poj 约瑟夫环,小孩报数,
- 全面解析hash函数的各种应用(持续更新)
- createfile失败的原因
- 2011斯诺克世锦赛 半决赛
- R6034
- JavaScript快速代码执行域
- Activity 详解
- 实用简单的jquery插件教程(转)