休眠条件是否包含涵盖条件列表的任何条件

Question

My question is that, I have a class like:

@Entity
public class Product{
@Id
String id;
String name;
@ManyToMany
List<Tag> tags;
}

@Entity
public class Tag{
@Id
String id;
String name;
}

I want to search products with criteria like in but reversive as:

session.createCriteria(Product.class).add(
    Restrictions.and(
        Restrictions.like("name",name+"%"),
        Restrictions.contains("tags",tag)).list();

But obviously Restrictions.contains does not exist. I only can find solutions with HQL queries but I don't want to (actually can't) write HQL queries.

Is there any way to handle this with criteria?

Answer 1

I would just join the association using createAlias et do a simple compare:

session.createCriteria(Product.class)
    .createAlias("tags", "tag")
    .add( Restrictions.eq("tag", tag))
    .list()

Answer 2

Are you are in search of Restrictions.in(String propertyName, Collection values) ? In the chapter 15.2. Narrowing the result set you will find an example:

List cats = sess.createCriteria(Cat.class)
    .add(Restrictions.not(Restrictions.in("name", new String[] { "Fritz", "Izi", "Pk" })))
    .add(Restrictions.disjunction())
    .list();