我有文档用户的集合
User
{
"Status": "ACTIVE",
"Login": {
"UserName": "login",
"Password": null,
"CreationDate": "2011-12-07T11:30:24.4062500Z",
"Roles": [
{
"Id": "roles/WebUser",
"Name": "WebUser"
},
{
"Id": "roles/Admin",
"Name": "Admin"
}
]
},
}
如何进行查询以获取角色名称为“WebUser”的用户列表，但角色名称为“Admin”的用户除外（包含角色“WebUser”但不包含角色“Admin”）
使用 LINQ 或 lucene
【问题讨论】：
标签： ravendb
您需要为此创建一个索引，例如：
from user in docs.Users
select new { Roles = user.Logins.Roles.Select(x=>x.Name) }
然后你可以查询正在使用：
Roles:WebMaster AND -Roles:Admin
【讨论】：
- 对我不起作用。我最终不得不使用NOT Prop:Value，但仅此一项并不能解决问题，我必须添加hack *:* AND NOT Prop:Value，我确信这会带来一些性能下降。我错过了什么吗？
field:bla AND (NOT Prop:Value) 有效，而field:bla AND (-Prop:Value) 无效。看起来像处理括号的错误。不幸的是，.Not 方法被转移到- 而不是NOT。在 v3.5 上测试
这是你想要的吗？
var users = documentSession.Query<User>()
.Where(x => x.Login.Roles.Any(y => y.Name == "WebUser"))
.Where(x => x.Login.Roles.Any(y => y.Name != "Admin"))
.ToList();
样本单元测试....
using System;
using System.Collections.Generic;
using System.Linq;
using NUnit.Framework;
using Raven.Client;
using Raven.Client.Embedded;
using Raven.Client.Linq;
namespace Foo.Tests.
{
public class UserTests
{
[Test]
// ReSharper disable InconsistentNaming
public void GivenSomeUsersWithWebUserAndAdminRoles_Query_ReturnsSomeUsers()
// ReSharper restore InconsistentNaming
{
IDocumentStore documentStore;
using (documentStore = new EmbeddableDocumentStore {RunInMemory = true})
{
// Arrange.
documentStore.Initialize();
// Create and store Fake Data.
using (IDocumentSession documentSession = documentStore.OpenSession())
{
IEnumerable<User> users = CreateFakeUsers(documentSession);
foreach (var user in users)
{
documentSession.Store(user);
}
documentSession.SaveChanges();
}
using (IDocumentSession documentSession = documentStore.OpenSession())
{
// Act.
var users = documentSession.Query<User>()
.Where(x => x.Login.Roles.Any(y => y.Name == "WebUser"))
.Where(x => x.Login.Roles.Any(y => y.Name != "Admin"))
.ToList();
// Assert.
Assert.IsNotNull(users);
Assert.AreEqual(2, users.Count);
}
}
}
private IEnumerable<User> CreateFakeUsers(IDocumentSession documentSession)
{
return new List<User>
{
new User
{
Status = "ACTIVE",
Login = new Login
{
UserName = "loging",
Password = null,
CreationDate = DateTime.UtcNow,
Roles = new List<Role>
{
new Role
{
Id = "roles/WebUser",
Name = "WebUser"
},
new Role
{
Id = "roles/Admin",
Name = "Admin"
}
}
}
},
new User
{
Status = "ACTIVE",
Login = new Login
{
UserName = "User 2",
Password = null,
CreationDate = DateTime.UtcNow,
Roles = new List<Role>
{
new Role
{
Id = "roles/WebUser",
Name = "WebUser"
}
}
}
},
new User
{
Status = "INACTIVE",
Login = new Login
{
UserName = "User 3",
Password = null,
CreationDate = DateTime.UtcNow,
Roles = new List<Role>
{
new Role
{
Id = "roles/Admin",
Name = "Admin"
}
}
}
}
};
}
#region Nested type: Login
private class Login
{
public string UserName { get; set; }
public string Password { get; set; }
public DateTime CreationDate { get; set; }
public ICollection<Role> Roles { get; set; }
}
#endregion
#region Nested type: Role
private class Role
{
public string Id { get; set; }
public string Name { get; set; }
}
#endregion
#region Nested type: User
private class User
{
public string Id { get; set; }
public string Status { get; set; }
public Login Login { get; set; }
}
#endregion
}
}
【讨论】：