小编Jos*_*ill的帖子

几天来,我一直在敲打这个.我有一个非常简单的查询,我试图在C#中运行,它在shell中看起来像这样.

db.runCommand({geoNear: "items", near: {type: "Point", coordinates : [-111.283344899999, 47.4941836]}, spherical : true, distanceMultiplier: 3963.2, maxDistance : 25});

我的收藏看起来像这样

{    
  "_id" : ObjectId(),    
  "Title" : "arst",    
  "Description" : "<p>arst</p>",    
  "Date" : new Date("11/29/2015 09:28:15"),    
  "Location" : {    
    "type" : "Point",    
    "Coordinates" : [-111.28334489999998, 47.4941836]    
  },    
  "Zip" : "59405"    
}

根据MongoDB C#API文档中的文档,MongoDB.Driver.Builders.Query对象现在已成为遗产.所以,当我做这样的事情

 var point = new GeoJson2DGeographicCoordinates(double.Parse(longitude), double.Parse(latitude)) ;
        var query = Query<Item>.Near(x => x.Location, new GeoJsonPoint<GeoJson2DGeographicCoordinates>(point), distance, true);

        var result = collection.Find(query);

编译器抱怨它无法从IMongoQuery转换为FilterDefinition.这告诉我新的2.1库不支持旧的Query <>构建器.但是对于我的生活,我在api文档中找不到任何引用替换的文档？

有没有人能指出我在2.1 C#驱动程序中执行这个简单的地理空间查询的正确方向？我很难过.

此外,我确实在集合上创建了一个2dsphere索引,如果我没有shell命令不起作用.这是索引输出.

{ …

我正在使用9.6版本.我的文档看起来像这样:

{
    "name" : "John Doe", 
    "phones" : [
        {
            "type" : "mobile", 
            "number" : "555-555-0000",
            "deleted": false
        }, 
        {
            "type" : "home", 
            "number" : "555-555-0001",
            "needsUpdated" : true
        }, 
        {
            "type" : "work", 
            "number" : "555-555-0002"
        }
    ]
}

我创建了这样的:

create table t_json (c_json json not null);

insert into t_json (c_json) values ('{"name":"John Doe","phones": [{"type":"mobile","number":"555-555-0000"},{"type":"home","number":"555-555-0001"},{"type": "work","number": "555-555-0002"}]}');

insert into t_json (c_json) values ('{"name":"Jane Dane","phones": [{"type":"mobile","number":"555-555-0030"},{"type":"home","number":"555-555-0020"},{"type": "work","number": "555-555-0010"}]}');

现在我想弄清楚如何A,选择名为John Doe的行,并将他的手机号码更新为"555-555-0003".

从这里Postgresql 9.6文档我发现我可以查询正确的文档,如下所示:

select c_json …