public static void Main(string[] args)
{
#region 以下为Mongo配置及关系映射部分
//var config = new MongoConfigurationBuilder();
//COMMENT OUT FROM HERE
//config.Mapping(mapping =>
//{
// mapping.DefaultProfile(profile =>
// {
// profile.SubClassesAre(t => t.IsSubclassOf(typeof(MyClass)));
// });
// mapping.Map<MyClass>();
// mapping.Map<SubClass>();
//});
// TO HERE
#endregion
//config.ConnectionString("Server=127.0.0.1");
//using (Mongo mongo = new Mongo(config.BuildConfiguration()))
using (Mongo mongo = new Mongo("Server=127.0.0.1"))
{
mongo.Connect();
try
{
//索引器方式mogo["TestDb"]
var db = mongo.GetDatabase("TestDb");
//老版不支持泛型的时候写法是这样的db.GetCollection("Name") ->看源码重构了一个MongoCollection_1类
//将老版方法重构为db.GetCollection<Documnet>("Name");
//此方法其实将类名反射为集合 db.GetCollection<MyClass>("MyClass")
var collection = db.GetCollection<MyClass>();
//.net 3.5集合初始化特性 创建3个对象(2个MyClass,1个子类SubClass)
MyClass square = new MyClass()
{
Corners = 4,
Name = "Square"
};
MyClass circle = new MyClass()
{
Corners = 0,
Name = "Circle"
};
SubClass sub = new SubClass()
{
Name = "SubClass",
Corners = 6,
Ratio = 3.43
};
//保存对象
collection.Save(square);
collection.Save(circle);
collection.Save(sub);
#region LINQ写法读取数据
//var superclass = (from item in db.GetCollection<MyClass>("MyClass").Linq()
// where item.Corners > 1
// select item.Corners).ToList();
//var subclass = (from item in db.GetCollection<SubClass>("MyClass").Linq()
// where item.Ratio > 1
// select item.Corners).ToList();
#endregion
//Lambda写法
//读取集合MyClass所有对象
Console.WriteLine("Count by LINQ on typed collection: {0}", collection.Linq().Count(x => x.Corners > 1));
//读取集合为SubClass的对象(由于SubClass被保存到MyClass集合中了,故结果为0)
Console.WriteLine("Count by LINQ on typed collection2: {0}", db.GetCollection<SubClass>().Linq().Count(x => x.Corners > 1));
//Console.WriteLine("Count by LINQ on typed collection3: {0}", db.GetCollection<SubClass>().Count(new { Corners = Op.GreaterThan(1) }));
//注:op 是Document的子类 虽然我们存的是其它对象,但所有的对象最终都是以Document类型存储的,
//也就意味检索数据也是Document方式查找或统计了,以下Lambda方式的统计就体现了
//在基类中大家可以看到都是count(new Document())方式及条件查询的,这里介绍完了,下面的代码就容易理解了
Console.WriteLine("Count on typed collection: {0}", collection.Count(new { Corners = Op.GreaterThan(1) }));
var count = collection.Count(new Document("Corners", Op.GreaterThan(1)));
Console.WriteLine("Count: {0}", count);
Console.ReadKey();
}
finally
{
mongo.Disconnect();
}
}
//var main = new MainClass();
//main.Setup();
//main.Run();
Console.ReadLine();
}