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我正在使用 Morphia 0.99,我正在尝试更新实体中的嵌入字段,但我不知道如何。

// User entity
@Entity(value = "users", noClassnameStored = true)
public class User
{
    @Id
    private String id;

    @Embedded
    private UserConfig userConfig;
}

// User DAO
public class UserDao extends BasicDAO <User, ObjectId> implements IUserDao
{
    @Override
    public void setConfig (String userId, UserConfig config)
    {
        User user = get (new ObjectId (userId));
        user.setNotificationsTypes (notitypes);
        "this.update(user);"
    }
}

这个页面提出了这样的建议:

// User DAO
public class UserDao extends BasicDAO <User, ObjectId> implements IUserDao
{
    @Override
    public void setConfig (String userId, UserConfig config)
    {
        Query <User> query = ds.createQuery (User.class).field (idString).equal (userId);
        UpdateOperations <User> ops = ds.createUpdateOperations (User.class).set ("userConfig.someField", "Some Value");
        ds.update (updateQuery, ops);
    }
}

但我想更新整个嵌入字段,而不是一个一个地更新每个子字段。我怎样才能做到这一点?谢谢!

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0 回答 0