ravendb - 用RavenDb查询字典

Question

我有一个类定义为:

public class Student
{
    public string Id { get; set; }
    public IDictionary<string, string> Attributes { get; set; }
}

基于我在这里找到的讨论: http://groups.google.com/group/ravendb/browse_thread/thread/88ea52620021ed6c?pli=1

我可以很容易地将实例存储为:

//creation
using (var session = store.OpenSession())
{               
    //now the student:
    var student = new Student();
    student.Attributes = new Dictionary<string, string>();

    student.Attributes["NIC"] = "studentsNICnumberGoesHere";               
    session.Store(student);
    session.SaveChanges();
}

但是，当我查询如下时:

//Testing query on attribute
using (var session = store.OpenSession())
{
    var result = from student in session.Query<Student>()
                 where
                     student.Attributes["NIC"] == "studentsNICnumberGoesHere"
                  select student;

    var test = result.ToList();                
}           

我收到错误消息“'System.Linq.Expressions.InstanceMethodCallExpressionN'，键入'System.Linq.Expressions.MemberExpression'。”如图所示:

如何根据字典中的键进行查询？

Answer 1

这是一个错误，现已修复。
将在大约两个小时内发布到下一个版本中