hibernate Restrictions用法 MatchMode.ANYWHERE

方法	说明
Restrictions.eq	＝
Restrictions.allEq	利用Map来进行多个等于的限制
Restrictions.gt	＞
Restrictions.ge	＞＝
Restrictions.lt	＜
Restrictions.le	＜＝
Restrictions.between	BETWEEN
Restrictions.like	LIKE
Restrictions.in	in
Restrictions.and	and
Restrictions.or	or
Restrictions.sqlRestriction	用SQL限定查询

QBC常用限定方法
Restrictions.eq -->
equal,等于.
Restrictions.allEq -->
参数为Map对象,使用key/value进行多个等于的比对,相当于多个Restrictions.eq 的效果
Restrictions.gt -->
great-than > 大于
Restrictions.ge -->
great-equal >= 大于等于
Restrictions.lt -->
less-than, < 小于
Restrictions.le -->
less-equal <= 小于等于
Restrictions.between -->
对应SQL的between子句
Restrictions.like -->
对应SQL的LIKE子句
Restrictions.in -->
对应SQL的in子句
Restrictions.and -->
and 关系
Restrictions.or -->
or 关系
Restrictions.isNull -->
判断属性是否为空,为空则返回true
Restrictions.isNotNull -->
与isNull相反
Restrictions.sqlRestriction -->
SQL限定的查询
Order.asc -->
根据传入的字段进行升序排序
Order.desc -->
根据传入的字段进行降序排序
MatchMode.EXACT -->
字符串精确匹配.相当于"like 'value'"
MatchMode.ANYWHERE -->
字符串在中间匹配.相当于"like '%value%'"
MatchMode.START -->
字符串在最前面的位置.相当于"like 'value%'"
MatchMode.END -->
字符串在最后面的位置.相当于"like '%value'"
例子

查询年龄在20-30岁之间的所有学生对象

List list = session.createCriteria(Student.class)

       .add(Restrictions.between("age",new Integer(20),new Integer(30)).list();

查询学生姓名在AAA,BBB,CCC之间的学生对象

String[] names = {"AAA","BBB","CCC"};

List list = session.createCriteria(Student.class)

       .add(Restrictions.in("name",names)).list();

查询年龄为空的学生对象

List list = session.createCriteria(Student.class)

       .add(Restrictions.isNull("age")).list();

查询年龄等于20或者年龄为空的学生对象

List list = session.createCriteria(Student.class)

       .add(Restrictions.or(Restrictions.eq("age",new
Integer(20)),

                 Restrictions.isNull("age")).list();
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使用QBC实现动态查询 
public List findStudents(String name,int age){
Criteria criteria = session.createCriteria(Student.class);

if(name != null){

   criteria.add(Restrictions.liek("name",name,MatchMode.ANYWHERE));

}

if(age != 0){

   criteria.add(Restrictions.eq("age",new Integer(age)));

}

criteria.addOrder(Order.asc("name"));//根据名字升序排列

return criteria.list();

}

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今天用了写hibernate高级查询时用了Restrictions(当然Expression也是可以以的)这个类.感觉不错.

下面的代码写的不易读.其实核心就是一句
Restrictions.or(Restrictions.like(),Restrictions.or(Restrictions.like,........))

里面的or可以无限加的.还是比较好用

Session session = getHibernateTemplate().getSessionFactory()

                .openSession();

        Criteria criteria = session.createCriteria(Film.class);

        List<Film> list = criteria.add(

            Restrictions.or(Restrictions.like("description",
key,MatchMode.ANYWHERE),

            Restrictions.or(Restrictions.like("name",
key,MatchMode.ANYWHERE),

                Restrictions.or(    Restrictions.like("direct",
key,MatchMode.ANYWHERE),

                Restrictions.or(Restrictions.like("mainplay",key,MatchMode.ANYWHERE),

                        Restrictions.like("filearea", key,MatchMode.ANYWHERE)))))).list();

        session.close();

        return list;

转自http://www.blogjava.net/alancxx/articles/349490.html