Hibernate标准

Question

Criteria criteria = getSession().createCriteria(clazz); 
Criterion rest1= Restrictions.and(Restrictions.eq("A", "X"), 
       Restrictions.in("B", Arrays.asList("X","Y")));
Criterion rest2= Restrictions.and(Restrictions.eq("A", "Y"), 
       Restrictions.eq("B", "Z"));
criteria.add(Restrictions.or(rest1, rest2));

如果有奇数个AND参数，如何创建标准，例如。 5？

Answer 1

您可以使用DetachedCriteria，它看起来像：
Disjunction disjunction = Restrictions.disjunction();
disjunction.add(rest1);
disjunction.add(rest2);
disjunction.add(rest3);
...
dc.add(disjunction);

对于AND，您可以使用Conjunction代替Disjunction。

Answer 2

只需将之前调用Restrictions.and()的结果作为Restrictions.and（）的参数之一

例如：

Criterion cr = Restrictions.and(Restrictions.and(Restrictions.eq("A", "X"), 
       Restrictions.in("B", Arrays.asList("X","Y"))), Restrictions.eq("C", "Z));