java 列表的休眠条件
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时间：2020-10-31 04:13:13 来源:igfitidea点击:
Hibernate Criteria for list
提问by Konstantin
Good Day,
再会，
I have a Hibernate mapping that looks something like this:
我有一个 Hibernate 映射，看起来像这样：
public class Item implements Serializable {
private lond id;
private String Name;
private boolean status;
...
}
public class ItemHolder implements Serializable {
private long id;
private List<Item> items;
...
}
How can I do query to get all Item Holder's witch contains my Item? (with criteria)
我如何查询以获取所有物品持有者的女巫包含我的物品？（有标准）
回答by JB Nizet
You just need a join:
你只需要加入：
Criteria c = session.createCriteria(ItemHolder.class, "itemHolder");
c.createAlias("itemHolder.items", "item");
c.add(Restrictions.eq("item.id", theItemId);
回答by Karesh A
Criteria criteria=session.createCriteria(ItemHolder.class);
criteria.createAlias("items", "item");
criteria.add(Restrictions.eq("item.Name", "my Item").ignoreCase());
you can restrict with your requirement : id or name..
您可以根据您的要求进行限制：id 或 name..
回答by Francisco Spaeth
The query could be something like:
查询可能类似于：
Item loadedItem = ...;
Query query = session.createQuery("from ItemHolder ih where :item in elements(ih.items)");
query.setParameter("item", loadedItem);
List list = query.list();
