package com.th.dao.hibernate;
import java.io.Serializable;
import java.lang.reflect.Field;
import java.sql.SQLException;
import java.util.ArrayList;
import java.util.Collections;
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.Query;
import org.hibernate.Session;
import org.hibernate.criterion.DetachedCriteria;
import org.hibernate.criterion.Projections;
import org.springframework.dao.DataRetrievalFailureException;
import org.springframework.orm.hibernate3.HibernateCallback;
import org.springframework.orm.hibernate3.HibernateTemplate;
import com.th.domain.Page;
/**
* This base class is prepared for subclass to do CRUD easily.
*
* @author tianheng
*/
public abstract class GenericHibernateDao<T> {
protected static final Object[] EMPTY_OBJECT_ARRAY = new Object[] {};
protected Log log = LogFactory.getLog(getClass());
private final Class<T> clazz;
protected HibernateTemplate hibernateTemplate;
/**
* Inject domain's class type in constructor.
*
* @param clazz Domain's class.
*/
public GenericHibernateDao(Class<T> clazz) {
this.clazz = clazz;
}
/**
* @spring.property name="hibernateTemplate" ref="hibernateTemplate"
*/
public void setHibernateTemplate(HibernateTemplate hibernateTemplate) {
this.hibernateTemplate = hibernateTemplate;
}
@SuppressWarnings("unchecked")
public T query(Serializable id) {
T t = (T)hibernateTemplate.get(clazz, id);
if(t==null)
throw new DataRetrievalFailureException("Object not found.");
// it is strange that load() method return a lazy-loading proxy object
// and it may cause LazyInitializationException!
return t;
}
/**
* Default implementation of creating new domain object.
*/
public void create(T t) {
hibernateTemplate.save(t);
}
/**
* Default implementation of deleting new domain object.
*/
public void delete(T t) {
hibernateTemplate.delete(t);
}
/**
* Default implementation of updating domain object.
*/
public void update(T t) {
hibernateTemplate.update(t);
}
/**
* Do an update hql query, return the affected rows.
*
* @param updateHql Update HQL.
* @param values Parameters or null if none.
* @return The affected rows.
*/
protected int executeUpdate(final String updateHql, final Object[] values) {
HibernateCallback updateCallback = new HibernateCallback() {
public Object doInHibernate(Session session) throws HibernateException, SQLException {
Query query = session.createQuery(updateHql);
if(values!=null) {
for(int i=0; i<values.length; i++)
query.setParameter(i, values[i]);
}
return new Integer(query.executeUpdate());
}
};
return ((Integer)hibernateTemplate.execute(updateCallback)).intValue();
}
/**
* Prepared for sub-class for convenience. Query for list and also return
* total results' number.
*
* @param selectCount HQL for "select count(*) from ..." and should return a Long.
* @param select HQL for "select * from ..." and should return object list.
* @param values For prepared statements.
* @param page Page object for store page information.
*/
protected List queryForList(final String selectCount, final String select, final Object[] values, final Page page) {
Integer count = (Integer)queryForObject(selectCount, values);
page.setTotalCount(count.intValue());
if(page.isEmpty())
return Collections.EMPTY_LIST;
return queryForList(select, values, page);
}
/**
* Prepared for sub-class for convenience. Query for list but do not return
* total results' number.
*
* @param select HQL for "select * from ..." and should return object list.
* @param values For prepared statements.
* @param page Page object for store page information.
*/
protected List queryForList(final String select, final Object[] values, final Page page) {
// select:
HibernateCallback selectCallback = new HibernateCallback() {
public Object doInHibernate(Session session) {
Query query = session.createQuery(select);
if(values!=null) {
for(int i=0; i<values.length; i++)
query.setParameter(i, values[i]);
}
return query.setFirstResult(page.getFirstResult())
.setMaxResults(page.getPageSize())
.list();
}
};
return (List) hibernateTemplate.executeFind(selectCallback);
}
/**
* Prepared for sub-class for convenience. Query for unique result.
*
* @param select HQL for "select * from ..." and should return unique object.
* @param values For prepared statements.
*/
protected Object queryForObject(final String select, final Object[] values) {
HibernateCallback selectCallback = new HibernateCallback() {
public Object doInHibernate(Session session) {
Query query = session.createQuery(select);
if(values!=null) {
for(int i=0; i<values.length; i++)
query.setParameter(i, values[i]);
}
return query.uniqueResult();
}
};
return hibernateTemplate.execute(selectCallback);
}
protected Object queryForObject(final DetachedCriteria dc) {
HibernateCallback callback = new HibernateCallback() {
public Object doInHibernate(Session session) {
return dc.getExecutableCriteria(session).uniqueResult();
}
};
return hibernateTemplate.execute(callback);
}
/**
* Prepared for sub-class for convenience.
*/
protected List queryForList(final DetachedCriteria dc, final Page page) {
HibernateCallback callback = new HibernateCallback() {
public Object doInHibernate(Session session) {
Criteria c = dc.getExecutableCriteria(session);
if(page==null)
return c.list();
return PaginationCriteria.query(c, page);
}
};
return hibernateTemplate.executeFind(callback);
}
/**
* Prepared for sub-class for convenience.
*/
protected Object uniqueResult(final DetachedCriteria dc) {
HibernateCallback callback = new HibernateCallback() {
public Object doInHibernate(Session session) {
return dc.getExecutableCriteria(session).uniqueResult();
}
};
return hibernateTemplate.execute(callback);
}
}
/**
* A PaginationCriteria can execute both "select count(*)" and
* "select * from" queries, and set Page object automatically.
* This class uses reflect to remove and restore "order by" conditions.
*
* @author tianheng
*/
class PaginationCriteria {
private static Log log = LogFactory.getLog(PaginationCriteria.class);
private static Field orderEntriesField = getField(Criteria.class, "orderEntries");
public static List query(Criteria c, Page page) {
// first we must detect if any Order defined:
// Hibernate code: private List orderEntries = new ArrayList();
List _old_orderEntries = (List)getFieldValue(orderEntriesField, c);
boolean
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spring+hibernate 角色权限系统 (368个子文件)
RoleInfoController.class 7KB
GenericHibernateDao.class 5KB
MouduleInfoController.class 4KB
Userinfo.class 4KB
RoleInfoServiceImpl.class 4KB
ThController.class 3KB
PaginationCriteria.class 3KB
RegisterController.class 3KB
MouduleInfoDaoImpl.class 3KB
RoleInfoDaoImpl.class 3KB
Th1Controller.class 3KB
CheckIdController.class 3KB
MenuInfoDaoImpl.class 2KB
test111.class 2KB
RoleMouMenuDaoImpl.class 2KB
MouduleInfoServiceImpl.class 2KB
LinkDaoImpl.class 2KB
GenericHibernateDao$2.class 2KB
Rolemoudule.class 2KB
Page.class 2KB
GenericHibernateDao$5.class 1KB
GenericHibernateDao$1.class 1KB
RegisterDaoImpl.class 1KB
GenericHibernateDao$3.class 1KB
CodeFilter.class 1KB
Links.class 1KB
SearchLinkResult.class 1KB
Moudule.class 1KB
Function.class 1KB
Menu.class 1KB
Roleinfo.class 1KB
Orginfo.class 1KB
GenericHibernateDao$4.class 1KB
GenericHibernateDao$6.class 1KB
LinkServiceImpl.class 1KB
RegisterServiceImpl.class 1KB
UserInformation.class 1KB
Userrole.class 1KB
RoleMMForm.class 1004B
RoleInfoService.class 915B
QuartzJob.class 890B
MainTest.class 775B
RoleInfoDao.class 584B
MouduleInfoDao.class 551B
RoleMouMenuDao.class 535B
MenuInfoDao.class 521B
MouduleInfoService.class 493B
GenericDao.class 382B
LinkDao.class 327B
RegisterDao.class 324B
LinkService.class 224B
RegisterService.class 218B
.classpath 1KB
subModal.css 1KB
stylesheet.css 1KB
close.gif 609B
inherit.gif 57B
index-all.html 111KB
RoleInfoServiceImpl.html 31KB
Userinfo.html 29KB
MouduleInfoController.html 26KB
RoleInfoController.html 26KB
GenericHibernateDao.html 25KB
MouduleInfoServiceImpl.html 23KB
RoleInfoDaoImpl.html 22KB
MouduleInfoDaoImpl.html 21KB
RegisterController.html 21KB
MenuInfoDaoImpl.html 20KB
RoleMouMenuDaoImpl.html 20KB
Th1Controller.html 20KB
CheckIdController.html 20KB
ThController.html 20KB
RoleInfoService.html 18KB
LinkDaoImpl.html 17KB
RegisterDaoImpl.html 17KB
Rolemoudule.html 16KB
serialized-form.html 15KB
Page.html 15KB
RegisterServiceImpl.html 14KB
overview-tree.html 14KB
LinkServiceImpl.html 14KB
Links.html 14KB
SearchLinkResult.html 14KB
Moudule.html 14KB
Function.html 14KB
Menu.html 14KB
Roleinfo.html 14KB
RoleInfoDao.html 14KB
MouduleInfoService.html 14KB
Orginfo.html 13KB
UserInformation.html 13KB
Userrole.html 13KB
MouduleInfoDao.html 13KB
RoleMouMenuDao.html 12KB
MenuInfoDao.html 12KB
test111.html 12KB
GenericDao.html 12KB
RoleMMForm.html 11KB
CodeFilter.html 11KB
LinkDao.html 10KB
共 368 条
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资源评论
- sunnish82014-09-26挺不错的 很早以前下的
- lijh02152015-08-17很不错的可以用来学习一下。
- langjuan88882014-12-07挺不错的 参考参考
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