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【MongoDB】C# .Net MongoDB常用语法

bubuko 2022/1/25 16:37:48 dotnet 字数 139810 阅读 1031 来源 http://www.bubuko.com/infolist-5-1.html

1.1.驱动安装 使用NuGet包管理器安装MongoDB C#驱动：MongoDB.Driver 1.2. C#连接MongoDB //获取MongoDB连接客户端 MongoClient client = new MongoClient("mongodb://root:root@localhos ...

1.1.驱动安装

使用NuGet包管理器安装MongoDB C#驱动： MongoDB.Driver
0

1.2. C#连接MongoDB

//获取MongoDB连接客户端
MongoClient client = new MongoClient("mongodb://root:root@localhost:27017");
//获取数据库
var database = client.GetDatabase("mongtestdb");
//获取集合
var collection = database.GetCollection<Organizations>("Organizations");

在获取集合时，有两种方式
1.指定集合类型，入上面的方式，指定获取集合时使用指定的类Organizations，优势是可以使用lamda表达式获取属性，查询时不需要转换类型
2.使用BsonDocument获取集合，查询结果若使用类接收，需要转换类型：C#中使用MongoDB聚合管道时必须使用BsonDocument的方式获取集合（目前是）
var collection = database.GetCollection<BsonDocument>("Organizations");

 

2.简单文档结构

以组织表为例，表结构如下图所示 
//组织表结构
//Organizations
{
    "_id": ObjectId("60f7961699515da94c20296c"),
    "CreationTime": ISODate("2015-12-11T10:35:25.000Z"),
    "CreatorUserId": NumberLong("date
    1"),
    "LastModificationTime": ISODate("2021-07-22T18:54:46.803Z"),
    "LastModifierUserId": NumberLong("11949267"),
    "IsDeleted": false,
    "DeletionTime": null,
    "DeleterUserId": null,
    "CreatorUserName": null,
    "LastModifierUserName": null,
    "DeleterUserName": null,
    "OrgId": NumberInt("2"),    //组织Id
    "Name": "某某集团",    //组织名称
    "ShortName": "某某集团",    //组织简称
    "Code": "HQW",    //组织编码
    "Type": NumberInt("100"),    //组织类型：公司、部门
    "HeadUserId": NumberLong("11944818"),
    "Sort": NumberInt("1"),
    "ParentId": NumberInt("0"),    //上级组织Id
    "IsActive": true,    //是否启用
    "OrganizationLevel": NumberInt("1"),
    "Leaders":[{
        "UserId":"abc",
      "IsMain":true
    }]
}

2.1.查询

MongoDB脚本
注意：字段可以不用双引号包裹，也可以使用双引号包裹，均可。但是当字段名不符合标识符要求时，一定要使用双引号包裹，否则会报错 
//1.查询全部
db.Organizations.find({})

//2.通过Id查询
db.Organizations.find({"_id":ObjectId("60cac0979b3c533a5d1a06e1")})

//3.模糊查询
db.Organizations.find({"ShortName":/互联科技/})  //全模糊
db.Organizations.find({"ShortName":/^互联科技/}) //以“联科技公司”为前缀
db.Organizations.find({"ShortName":/联科技公司$/}) //以“联科技公司”为后缀

//4.in查询
db.Organizations.find({"ShortName":{$in:["电影视效中心","电影特效制作中心"]}})

//5.and查询
db.Organizations.find({"ShortName":"互联科技","Name":"互联科技科技有限公司"})

//6.or查询
db.Organizations.find({$or:[{"ShortName":"电影视效中心"},{"ShortName":"电影特效制作中心"}]})

//7.混合查询
//类似sql: Type=100 and OrgId>=2 and (Name like ‘%互联%‘ or ShortName=‘智能公司‘) and Code in (‘SZN‘,‘SHL‘)
db.Organizations.find({
    "Type": NumberInt(100),
    "OrgId": {
        $gte: 2
    },
    $or: [{
        "Name": /互联/
    }, {
        "ShortName": "智能公司"
    }],
    "Code": {
        $in: ["SZN", "SHL"]
    }
})
C#语法
var filterBuilder = Builders<Organizations>.Filter; //创建过滤条件构建器
{
    //1.查询全部
    var filter = filterBuilder.Empty;    //查询条件为空
    var res = await collection.Find(filter).ToListAsync();
}
{
    //2.通过Id查询
    var filter = filterBuilder.Eq(a => a.Id, ObjectId.Parse("60cac0979b3c533a5d1a06e1"));
    var res = await collection.Find(filter).ToListAsync();
}
{
    //3.模糊查询
    var filter = filterBuilder.Regex(a => a.ShortName,"/互联科技/");
    var filter2 = filterBuilder.Regex(a => a.ShortName,"/^互联科技/");
    var filter3 = filterBuilder.Regex(a => a.ShortName,"/联科技公司$/");
    var res = await collection.Find(filter).ToListAsync();
}
{
    //4.in查询
    var filter = filterBuilder.In(a => ShortName, new[] { "电影视效中心","电影特效制作中心" });
    var res = await collection.Find(filter).ToListAsync();
}
{
    //5.and查询
    var filter = filterBuilder.And(
        filterBuilder.Eq(a => a.ShortName,"互联科技"),
        filterBuilder.Eq(a => a.Name,"互联科技科技有限公司"),
    );
    var res = await collection.Find(filter).ToListAsync();
}
{
    //6.or查询
    var filter = filterBuilder.Or(
        filterBuilder.Eq(a => a.ShortName,"电影视效中心"),
        filterBuilder.Eq(a => a.ShortName,"电影特效制作中心"),
    );
    var res = await collection.Find(filter).ToListAsync();
}
{
    //7.混合查询
    //类似sql: Type=100 and OrgId>=2 and (Name like ‘%互联%‘ or ShortName=‘智能公司‘) and Code in (‘SZN‘,‘SHL‘)
    var filter = filterBuilder.And(
        filterBuilder.Eq(a => a.Type, 100),
        filterBuilder.Gte(a => a.OrgId, 2),
        filterBuilder.Or(
            filterBuilder.Regex(a => a.Name,"/互联/"),
            filterBuilder.Eq(a => a.ShortName, "智能公司")
        ),
        filterBuilder.In(a => a.Code, new[] { "SZN","SHL" })
    );
    var res = await collection.Find(filter).ToListAsync();
}

2.2.新增

MongoDB脚本 
//1.单条新增
db.Organizations.insertOne( {
    CreationTime: ISODate("2015-12-11T10:35:25.000Z"),
    CreatorUserId: NumberLong("1"),
    LastModificationTime: ISODate("2021-07-22T18:54:46.803Z"),
    LastModifierUserId: NumberLong("11949267"),
    IsDeleted: false,
    DeletionTime: null,
    DeleterUserId: null,
    CreatorUserName: null,
    LastModifierUserName: null,
    DeleterUserName: null,
    OrgId: NumberInt("2"),
    Name: "华强方特文化科技集团股份有限公司",
    ShortName: "华强方特集团",
    Code: "HQW",
    Type: NumberInt("100"),
    HeadUserId: NumberLong("11944818"),
    Sort: NumberInt("1"),
    ParentId: NumberInt("0"),
    IsActive: true,
    OrganizationLevel: NumberInt("1")
} );

//2.多条新增
db.Organizations.insertMany( [{
    CreationTime: ISODate("2015-12-11T10:35:25.000Z"),
    CreatorUserId: NumberLong("1"),
    LastModificationTime: ISODate("2021-07-22T18:54:46.803Z"),
    LastModifierUserId: NumberLong("11949267"),
    IsDeleted: false,
    DeletionTime: null,
    DeleterUserId: null,
    CreatorUserName: null,
    LastModifierUserName: null,
    DeleterUserName: null,
    OrgId: NumberInt("2"),
    Name: "华强方特文化科技集团股份有限公司",
    ShortName: "华强方特集团",
    Code: "HQW",
    Type: NumberInt("100"),
    HeadUserId: NumberLong("11944818"),
    Sort: NumberInt("1"),
    ParentId: NumberInt("0"),
    IsActive: true,
    OrganizationLevel: NumberInt("1")
}] );
C#语法 
//1.单条新增
await collection.InsertOneAsync(new Organizations
{
    OrgId = 2,
    Name = "华强方特文化科技集团股份有限公司",
    IsActive = true,
    CreationTime = DateTime.Now,
    ... ...
});

//2.多条新增
await collection.InsertManyAsync(new List<Organizations>());

2.3.更新

MongoDB脚本 
//1.局部更新
db.Organizations.updateOne(
   { Code: "HQW" },    //查询条件
   {
     $set: { "ShortName": "华强方特", IsActive: false }, //待更新字段
     $push: { //在数组中插入元素
        "Leaders": {
            "UserId": "ggggg",
            "IsMain": true
        }
    },
     $currentDate: { LastModificationTime: true } //更新字段LastModificationTime为当前时间，若该字段不存在，则创建
   }
)

//2.多条更新
db.Organizations.updateMany(
   { LastModificationTime: {$gte:ISODate("2021-07-22T18:54:46.803Z")} },    //查询条件
   {
     $set: { "ShortName": "华强方特", IsActive: false }, //待更新字段
     $currentDate: { LastModificationTime: true } //更新字段LastModificationTime为当前时间，若该字段不存在，则创建
   }
)

//3.替换更新
db.Organizations.replaceOne(
    {"Code": "HQW"},    //查询条件
    { //带替换的文档
        "_id": ObjectId("60f7961699515da94c20296c"),
        CreationTime: ISODate("2015-12-11T10:35:25.000Z"),
        CreatorUserId: NumberLong("1"),
        LastModificationTime: ISODate("2021-07-22T18:54:46.803Z"),
        LastModifierUserId: NumberLong("11949267"),
        IsDeleted: false,
        DeletionTime: null,
        DeleterUserId: null,
        CreatorUserName: null,
        LastModifierUserName: null,
        DeleterUserName: null,
        OrgId: NumberInt("2"),
        Name: "华强方特文化科技集团股份有限公司",
        ShortName: "华强方特集团",
        Code: "HQW",
        Type: NumberInt("100"),
        HeadUserId: NumberLong("11944818"),
        Sort: NumberInt("1"),
        ParentId: NumberInt("0"),
        IsActive: true,
        OrganizationLevel: Num
        berInt("1")
    }
)
C#语法 
//1.局部更新
var filter = Builders<Organizations>.Filter.Eq(a => a.Id, ObjectId.Parse("60cac0979b3c533a5d1a06e1"));
var updateBuilder = Builders<Organizations>.Update;
var updates = new List<UpdateDefinition<Organizations>>
{
    updateBuilder.Set(a=> a.ShortName,"华强方特"),
    updateBuilder.Set(a=> a.IsActive,true),
    updateBuilder.Push(a=> a.Leaders,new { UserId = "abc",IsMain = true}),
    updateBuilder.CurrentDate(a=>a.LastModificationTime)
};
var res = await collection.UpdateOneAsync(filter, updateBuilder.Combine(updates));

//2.多条更新
var filter = Builders<Organizaionts>.Filter.Gte(a => a.LastModificationTime, DateTime.Now.AddDays(1));
var updateBuilder = Builders<Organizaionts>.Update;
var updates = new List<UpdateDefinition<Organizaionts>>
{
    updateBuilder.Set(a=> a.ShortName,"华强方特"),
    updateBuilder.Set(a=> a.IsActive,true),
    updateBuilder.CurrentDate(a=>a.LastModificationTime)
};
var res = await collection.UpdateManyAsync(filter, updateBuilder.Combine(updates));

//3.替换更新
var replaceModel = new Organizaionts(){...};
var replaceRes = await collection.ReplaceOneAsync(Builders<Organizations>.Filter.Eq(a => Code, "HQW"), replaceModel);

 

3.嵌套文档结构

以员工扩展字段表为例，表结构如下图所示 
//EmployeeFieldInfos
{
    "_id": ObjectId("609cfe663242fa662691b34a"),
    "CreationTime": ISODate("2021-05-13T18:24:37.579Z"),
    "CreatorUserId": null,
    "LastModificationTime": ISODate("2021-05-13T18:24:37.583Z"),
    "LastModifierUserId": null,
    "IsDeleted": false,
    "DeletionTime": null,
    "DeleterUserId": null,
    "CreatorUserName": null,
    "LastModifierUserName": null,
    "DeleterUserName": null,
    "Categories": [
        {
            "Code": "PersonalInfo",
            "Name": "个人信息设置",
            "Sort": NumberInt("1"),
            "Groups": [
                {
                    "Code": "BasicInfoGroup",
                    "Name": "基本信息",
                    "Sort": NumberInt("1"),
                    "EmployeeFields": [
                        {
                            "Code": "470a584e78f24c9da8c69e3cf2dabf48",
                            "Name": "爱好",
                            "IsSystemDefault": false,
                            "FieldDataType": NumberInt("0"),
                            "StringLength": NumberInt("125"),
                            "Prompt": "最大支持125个字符",
                            "IsRequried": false,
                            "Sort": NumberInt("2")
                        },
                        {
                            "Code": "d7b5ad358cc64d0e8f9379eb1c9b23cf",
                            "Name": "姓名",
                            "IsSystemDefault": false,
                            "FieldDataType": NumberInt("0"),
                            "StringLength": NumberInt("125"),
                            "Prompt": "最大支持125个字符",
                            "IsRequried": false,
                            "Sort": NumberInt("1")
                        }
                    ]
                },
                {
                    "Code": "CommunicationInfoGroup",
                    "Name": "通讯信息",
                    "Sort": NumberInt("2"),
                    "EmployeeFields": [ ]
                }
            ]
        },
        {
            "Code": "PostInfo",
            "Name": "岗位信息设置",
            "Sort": NumberInt("2"),
            "Groups": [
                {
                    "Code": "PostInfoGroup",
                    "Name": "岗位信息",
                    "Sort": NumberInt("1"),
                    "EmployeeFields": [ ]
                },
                {
                    "Code": "ContractInfoGroup",
                    "Name": "合同信息",
                    "Sort": NumberInt("2"),
                    "EmployeeFields": [ ]
                }
            ]
        }
    ]
}

3.1.拆分查询

MongoDB脚本
通过“聚合管道”语法拆分子文档，将嵌套的内容拉平展示 
db.EmployeeFieldInfos.aggregate([{
    $unwind: ‘$Categories‘    //拆分的子文档
}, {
    $unwind: ‘$Categories.Groups‘    //拆分的子文档
}, {
    $unwind: ‘$Categories.Groups.EmployeeFields‘  //拆分的子文档
}, {
    $match: {
        ‘Categories.Code‘: {
            $in: [‘PersonalInfo‘]
        },
                ‘Categories.Groups.Code‘: {
            $in: [‘BasicInfoGroup‘]
        },
        ‘Categories.Groups.EmployeeFields.IsDeleted‘: false
    }
}, {
    $addFields: {    //临时变量
        ‘Code‘: ‘$Categories.Groups.EmployeeFields.Code‘,
        ‘Name‘: ‘$Categories.Groups.EmployeeFields.Name‘,
        ‘IsSystemDefault‘: ‘$Categories.Groups.EmployeeFields.IsSystemDefault‘,
        ‘FieldDataType‘: ‘$Categories.Groups.EmployeeFields.FieldDataType‘,
        ‘OptionsDefinitionCode‘: ‘$Categories.Groups.EmployeeFields.OptionsDefinitionCode‘,
        ‘StringLength‘: ‘$Categories.Groups.EmployeeFields.StringLength‘,
        ‘Prompt‘: ‘$Categories.Groups.EmployeeFields.Prompt‘,
        ‘IsRequired‘: ‘$Categories.Groups.EmployeeFields.IsRequired‘,
        ‘Sort‘: ‘$Categories.Groups.EmployeeFields.Sort‘,
        ‘DefaultValue‘: ‘$Categories.Groups.EmployeeFields.DefaultValue‘,
        ‘IsActive‘: ‘$Categories.Groups.EmployeeFields.IsActive‘,
        ‘IsDeleted‘: ‘$Categories.Groups.EmployeeFields.IsDeleted‘,
        ‘CategoryCode‘: ‘$Categories.Code‘,
        ‘CategoryName‘: ‘$Categories.Name‘,
        ‘CategorySort‘: ‘$Categories.Sort‘,
        ‘GroupCode‘: ‘$Categories.Groups.Code‘,
        ‘GroupName‘: ‘$Categories.Groups.Name‘,
        ‘GroupSort‘: ‘$Categories.Groups.Sort‘,
        ‘GroupSystemDefault‘: ‘$Categories.Groups.IsSystemDefault‘,
        ‘GroupMultiple‘: ‘$Categories.Groups.IsMultiple‘
    }
}, {
    $project: {    //表示需要显示或隐藏的属性列表，0表示隐藏，1表示显示。此处可使用上面定义的临时变量
        ‘_id‘: 0,    //_id属性属于文档顶层元素，不需要使用临时变量
        ‘Code‘: 1, //当前Code属于嵌套子文档中的元素，需要使用临时变量
        ‘Name‘: 1,
        ‘IsSystemDefault‘: 1,
        ‘FieldDataType‘: 1,
        ‘OptionsDefinitionCode‘: 1,
        ‘StringLength‘: 1,
        ‘Prompt‘: 1,
        ‘IsRequired‘: 1,
        ‘Sort‘: 1,
        ‘DefaultValue‘: 1,
        ‘IsActive‘: 1,
        ‘IsDeleted‘: 1,
        ‘CategoryCode‘: 1,
        ‘CategoryName‘: 1,
        ‘CategorySort‘: 1,
        ‘GroupCode‘: 1,
        ‘GroupName‘: 1,
        ‘GroupSort‘: 1,
        ‘GroupSystemDefault‘: 1,
        ‘GroupMultiple‘: 1
    }
}]);

//结果实例：
// 1
{
    "IsDeleted": false,
    "Code": "470a584e78f24c9da8c69e3cf2dabf48",
    "Name": "爱好",
    "IsSystemDefault": false,
    "FieldDataType": NumberInt("0"),
    "StringLength": NumberInt("125"),
    "Prompt": "最大支持125个字符",
    "Sort": NumberInt("2"),
    "CategoryCode": "PersonalInfo",
    "CategoryName": "个人信息设置",
    "CategorySort": NumberInt("1"),
    "GroupCode": "BasicInfoGroup",
    "GroupName": "基本信息",
    "GroupSort": NumberInt("1"),
     ... ...
}

// 2
{
    "IsDeleted": false,
    "Code": "d7b5ad358cc64d0e8f9379eb1c9b23cf",
    "Name": "姓名",
    "IsSystemDefault": false,
    "FieldDataType": NumberInt("0"),
    "StringLength": NumberInt("125"),
    "Prompt": "最大支持125个字符",
    "Sort": NumberInt("1"),
    "CategoryCode": "PersonalInfo",
    "CategoryName": "个人信息设置",
    "CategorySort": NumberInt("1"),
    "GroupCode": "BasicInfoGroup",
    "GroupName": "基本信息",
    "GroupSort": NumberInt("1"),
     ... ...
}
C#语法
MongoDb BsonDocument转json时，因为含有很多mongo特有的属性，导致json不是合法的，需要转换为.net可识别的对象，再转为json
单个BsonDocument的转换方式：var dotNetValue = BsonTypeMapper.MapToDotNetValue(doc);
BsonDocument数组的转换方式： var dotNetObjList = bsonDocList.ConvertAll(BsonTypeMapper.MapToDotNetValue); 
var collection = BsonDocumentCollection;
var pipelineJsons = new List<string> {
    "{$unwind:‘$Categories‘}",
    "{$unwind:‘$Categories.Groups‘}",
    "{$unwind:‘$Categories.Groups.EmployeeFields‘}",
    "{$match:{‘Categories.Code‘:{$in:[‘PersonalInfo‘]},‘Categories.Groups.Code‘:{$in:[‘BasicInfoGroup‘]},‘Categories.Groups.EmployeeFields.IsDeleted‘:false}}",
    "{$addFields:{‘Code‘:‘$Categories.Groups.EmployeeFields.Code‘,‘Name‘:‘$Categories.Groups.EmployeeFields.Name‘,‘IsSystemDefault‘:‘$Categories.Groups.EmployeeFields.IsSystemDefault‘,‘FieldDataType‘:‘$Categories.Groups.EmployeeFields.FieldDataType‘,‘ExtensionValue‘:‘$Categories.Groups.EmployeeFields.ExtensionValue‘,‘IsMultipleChoice‘:‘$Categories.Groups.EmployeeFields.IsMultipleChoice‘,‘OptionsDefinitionCode‘:‘$Categories.Groups.EmployeeFields.OptionsDefinitionCode‘,‘StringLength‘:‘$Categories.Groups.EmployeeFields.StringLength‘,‘Prompt‘:‘$Categories.Groups.EmployeeFields.Prompt‘,‘IsRequired‘:‘$Categories.Groups.EmployeeFields.IsRequired‘,‘ReadOnly‘:‘$Categories.Groups.EmployeeFields.ReadOnly‘,‘Sort‘:‘$Categories.Groups.EmployeeFields.Sort‘,‘DefaultValue‘:‘$Categories.Groups.EmployeeFields.DefaultValue‘,‘IsActive‘:‘$Categories.Groups.EmployeeFields.IsActive‘,‘IsEdit‘:‘$Categories.Groups.EmployeeFields.IsEdit‘,‘IsHide‘:‘$Categories.Groups.EmployeeFields.IsHide‘,‘IsDeleted‘:‘$Categories.Groups.EmployeeFields.IsDeleted‘,‘CategoryCode‘:‘$Categories.Code‘,‘CategoryName‘:‘$Categories.Name‘,‘CategorySort‘:‘$Categories.Sort‘,‘GroupCode‘:‘$Categories.Groups.Code‘,‘GroupName‘:‘$Categories.Groups.Name‘,‘GroupSort‘:‘$Categories.Groups.Sort‘,‘GroupSystemDefault‘:‘$Categories.Groups.IsSystemDefault‘,‘GroupMultiple‘:‘$Categories.Groups.IsMultiple‘,‘GroupReadOnly‘:‘$Categories.Groups.ReadOnly‘}}",
    "{$project:{‘_id‘:0,‘Code‘:1,‘Name‘:1,‘IsSystemDefault‘:1,‘FieldDataType‘:1,‘ExtensionValue‘:1,‘IsMultipleChoice‘:1,‘OptionsDefinitionCode‘:1,‘StringLength‘:1,‘Prompt‘:1,‘IsRequired‘:1,‘ReadOnly‘:1,‘Sort‘:1,‘DefaultValue‘:1,‘IsActive‘:1,‘IsEdit‘:1,‘IsHide‘:1,‘IsDeleted‘:1,‘CategoryCode‘:1,‘CategoryName‘:1,‘CategorySort‘:1,‘GroupCode‘:1,‘GroupName‘:1,‘GroupSort‘:1,‘GroupSystemDefault‘:1,‘GroupMultiple‘:1,‘GroupReadOnly‘:1}}"
    };
var stages = pipelineJsons.Select(a => new JsonPipelineStageDefinition<BsonDocument, BsonDocument>(a));
var pipeline = new PipelineStagePipelineDefinition<BsonDocument, BsonDocument>(stages);
var res = await collection.Aggregate(pipeline).ToListAsync();
if (res == null)
{
    return new List<EmployeeFieldDto>();
}
var dotNetObjList = res.ConvertAll(BsonTypeMapper.MapToDotNetValue);
var json = JsonConvert.SerializeObject(dotNetObjList);
return Newtonsoft.Json.JsonConvert.DeserializeObject<List<EmployeeFieldDto>>(json);

3.2.子文档新增

MongoDB脚本
$push 
db.EmployeeFieldInfos.updateOne({}, {
    $push: {
        "Categories.$[i].Groups.$[j].EmployeeFields": {
            "IsDeleted": false,
            "Code": "d7b5ad358cc64d0e8f9379eb1c9b23cf",
            "Name": "姓名",
            "IsSystemDefault": false,
            "FieldDataType": NumberInt("0"),
            "StringLength": NumberInt("125"),
            "Prompt": "最大支持125个字符",
            "Sort": NumberInt("1"),
            "CategoryCode": "PersonalInfo",
            "CategoryName": "个人信息设置",
            "CategorySort": NumberInt("1"),
            "GroupCode": "BasicInfoGroup",
            "GroupName": "基本信息",
            "GroupSort": NumberInt("1")
        }
    }
}, {
    arrayFilters: [{
        "i.Code": "PersonalInfo"
    }, {
        "j.Code": "BasicInfoGroup"
    }]
})
C#语法 
var collection = Collection;
var update = Builders<EmployeeFieldInfo>.Update.Push("Categories.$[i].Groups.$[j].EmployeeFields", new EmployeeFieldInfo());
var updateOption = new UpdateOptions
            {
                ArrayFilters = new List<ArrayFilterDefinition<EmployeeFieldInfo>> {
                        new BsonDocument("i.Code", categoryCode),
                        new BsonDocument("j.Code", groupCode)
                    }
            };
var res = await collection.UpdateOneAsync(Builders<EmployeeFieldInfo>.Filter.Empty, update, updateOption);
if (res.MatchedCount == 0)
{
    throw new ResultException(Result.FromError("新增失败"));
}
return res;

3.3.子文档更新

MongoDB脚本
$set
arrayFilters限制：对相同数组索引的条件，需要通过花括号包在一个对象内 
//1.修改部分属性
db.EmployeeFieldInfos.updateOne({}, {
    $set: {
        "Categories.$[i].Groups.$[j].EmployeeFields.$[k].Name": "姓名"
    }
}, {
    arrayFilters: [{
        "i.Code": "PersonalInfo"
    }, {
        "j.Code": "BasicInfoGroup"
    }, {
        //对索引k的多个条件，需要包含在同一个json对象内,否则会报错：Found multiple array filters with the same top-level field name k
        "k.Code": "Name",
        "k.IsDeleted": true
    }]
})

//2.修改多个属性
db.EmployeeFieldInfos.updateOne({}, {
    $set: {
        "Categories.$[i].Groups.$[j].EmployeeFields.$[k].Name": "姓名",
          "Categories.$[i].Groups.$[j].EmployeeFields.$[k].IsActive": true
    }
}, {
      //嵌套文档过滤条件
    arrayFilters: [{
        "i.Code": "PersonalInfo"
    }, {
        "j.Code": "BasicInfoGroup"
    }, {
        //对索引k的多个条件，需要包含在同一个json对象内,否则会报错：Found multiple array filters with the same top-level field name k
        "k.Code": "Name",
        "k.IsDeleted": true
    }]
})

//3.修改整个嵌套文档
db.EmployeeFieldInfos.update({}, {
    $set: {
        "Categories.$[i].Groups.$[j].EmployeeFields.$[k]": {
            "IsDeleted": false,
            "Code": "d7b5ad358cc64d0e8f9379eb1c9b23cf",
            "Name": "姓名",
            "IsSystemDefault": false,
            "FieldDataType": NumberInt("0"),
            "StringLength": NumberInt("125"),
            "Prompt": "最大支持125个字符",
            "Sort": NumberInt("1"),
            "CategoryCode": "PersonalInfo",
            "CategoryName": "个人信息设置",
            "CategorySort": NumberInt("1"),
            "GroupCode": "BasicInfoGroup",
            "GroupName": "基本信息",
            "GroupSort": NumberInt("1")
        }
    }
}, {
    arrayFilters: [{
        "i.Code": "PersonalInfo"
    }, {
        "j.Code": "BasicInfoGroup"
    }, {
        "k.Code": "Name",
        "k.IsDeleted": true
    }]
})
C#语法 
//1.修改一个属性
var collection = Collection;
var update = Builders<EmployeeFieldInfo>.Update.Set("Categories.$[i].Groups.$[j].EmployeeFields.$[k].Name", "姓名");
var updateOption = new UpdateOptions
{
    ArrayFilters = new List<ArrayFilterDefinition<EmployeeFieldInfo>> {
            new BsonDocument("i.Code", categoryCode),
            new BsonDocument("j.Code", groupCode),
            new BsonDocument(){
                { "k.Code", field.Code},
                { "k.IsDeleted",false}
            }
        }
};
var res = await collection.UpdateOneAsync(Builders<EmployeeFieldInfo>.Filter.Empty, update, updateOption);
if (res.MatchedCount == 0)
{
    throw new ResultException(Result.FromError("更新失败"));
}
return res;

//2.修改多个属性
var collection = Collection;
var updateBuilder = Builders<Employee>.Update;
var updates = updateBuilder.Combine(new List<UpdateDefinition>{
    Builders<EmployeeFieldInfo>.Update.Set("Categories.$[i].Groups.$[j].EmployeeFields.$[k].Name", "姓名"),
    Builders<EmployeeFieldInfo>.Update.Set("Categories.$[i].Groups.$[j].EmployeeFields.$[k].IsActive", true)
});
var updateOption = new UpdateOptions
{
    ArrayFilters = new List<ArrayFilterDefinition<EmployeeFieldInfo>> {
            new BsonDocument("i.Code", categoryCode),
            new BsonDocument("j.Code", groupCode),
            new BsonDocument(){
                { "k.Code", field.Code},
                { "k.IsDeleted",false}
            }
        }
};
var res = await collection.UpdateOneAsync(Builders<EmployeeFieldInfo>.Filter.Empty, updates, updateOption);
if (res.MatchedCount == 0)
{
    throw new ResultException(Result.FromError("更新失败"));
}
return res;

//3.修改整个嵌套文档
var collection = Collection;
var update = Builders<EmployeeFieldInfo>.Update.Set("Categories.$[i].Groups.$[j].EmployeeFields.$[k]", new EmployeeFieldInfo());
var updateOption = new UpdateOptions
{
    ArrayFilters = new List<ArrayFilterDefinition<EmployeeFieldInfo>> {
            new BsonDocument("i.Code", categoryCode),
            new BsonDocument("j.Code", groupCode),
            new BsonDocument(){
                { "k.Code", field.Code},
                { "k.IsDeleted",false}
            }
        }
};
var res = await collection.UpdateOneAsync(Builders<EmployeeFieldInfo>.Filter.Empty, update, updateOption);
if (res.MatchedCount == 0)
{
    throw new ResultException(Result.FromError("更新失败"));
}
return res;

3.4.子文档删除

MongoDB脚本
$pull 
//删除PersonalInfo分类下、BasicInfoGroup分组下、Code为"Name"的员工字段子文档数据
db.EmployeeFieldInfos.updateOne({}, {
    $pull: {
        "Categories.$[i].Groups.$[j].EmployeeFields": {
            "Code": "Name",
              "IsActive": true
        }
    }
}, {
    arrayFilters: [{
        "i.Code": "PersonalInfo"
    }, {
        "j.Code": "BasicInfoGroup"
    }]
})
C#语法 
var collection = Collection;
var update = Builders<EmployeeFieldInfo>.Update.Pull("Categories.$[i].Groups.$[j].EmployeeFields", new BsonDocument{
    {"Code", "Name"},
    {"IsActive", true}
});
var updateOption = new UpdateOptions
{
    ArrayFilters = new List<ArrayFilterDefinition<EmployeeFieldInfo>> {
            new BsonDocument("i.Code", categoryCode),
            new BsonDocument("j.Code", groupCode),
            new BsonDocument(){
                { "k.Code", field.Code},
                { "k.IsDeleted",false}
            }
        }
};
var res = await collection.UpdateOneAsync(Builders<EmployeeFieldInfo>.Filter.Empty, update, updateOption);
if (res.MatchedCount == 0)
{
    throw new ResultException(Result.FromError("更新失败"));
}
return res;

 

【MongoDB】C# .Net MongoDB常用语法

原文：https://www.cnblogs.com/simawenbo/p/15308142.html


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