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我需要在文档的字段数组中插入一些元素。那么...我知道Mongo有原子Update.Push ...事实是,我需要在许多文档中进行插入操作。案是下述(我需要插入一个角色阵列,每名):如何使用mongoDB执行“全部或全部”操作?
public override void AddUsersToRoles(string[] usernames, string[] roleNames)
{
foreach (string role in roleNames)
{
if (!this.RoleExists(role))
{
throw new ProviderException(String.Format("The role '{0}' was not found.", role));
}
}
//How to guarantee that all users will be updated with roles?
foreach (string user in usernames)
{
var docs = this.users.Update(Query.And(Query.EQ("Username", user),
Query.EQ("Applications.Name", this.ApplicationName)), Update.AddToSetEach("Applications.$.Roles",
new BsonArray(roleNames)));
}
}
假设连接下来角色,第三的用户名的“推”的时刻。我需要回滚以前的操作。任何想法?