我需要使用Mongo C＃驱动程序构建一个复杂的查询。我已经有了intellishell的工作查询。
db.Organizations.aggregate(
// Pipeline
[
// Stage 1
{
$match: {
"$and" : [
{
"Country.Path" : /^Asia.*/i
},
{
"$or" : [
{
"OrganizationTypes.Path" : /^Investor.*/i
},
{
"OrganizationTypes.Path" : /^Companies.*/i
}
]
},
{
"$or" : [
{
"Sectors.Path" : /.*Consumer Discretionary\\Recreation Facilities & Svcs.*/i
},
{
"Sectors.Path" : /.*Consumer Discretionary\\Consumer Services.*/i
}
]
}
]
}
},
// Stage 2
{
$project: {
"id" : 1,
"Name" : 1,
"OrganizationTypes" : 1,
"NumberOfSectors" : {
"$size" : "$Sectors"
},
"NumberOfOrganisationType" : {
"$size" : "$OrganizationTypes"
},
"NumberOfContacts" : {
"$size" : "$Contacts"
}
}
},
// Stage 3
{
$match:
{ "NumberOfSectors": { $lt: 16 } }
},
// Stage 4
{
$unwind: "$OrganizationTypes"
},
// Stage 5
{
$group: {
"_id" : "$OrganizationTypes.Path",
count: { $sum: 1 }
}
}
]
);
我的c＃代码是：
List<FilterDefinition<Organization>> filters = new List<FilterDefinition<Organization>>();
if (filter.CountriesArea != null && filter.CountriesArea.Count > 0)
{
filters.Add(Builders<Organization>.Filter.In("CountryAreas._id", ReferenceTreeHelper.Flatten(filter.Countries).Select(x => x.Id)));
}
if (filter.Countries != null && filter.Countries.Count > 0)
filters.Add(Builders<Organization>.Filter.In(x => x.Country.Id, ReferenceTreeHelper.Flatten(filter.Countries).Select(x => x.Id)));
if (filter.Sectors != null && filter.Sectors.Count > 0)
{
filters.Add(Builders<Organization>.Filter.In("Sectors._id", ReferenceTreeHelper.Flatten(filter.Sectors).Select(x => x.Id)));
}
if (filter.Precision < 4)
{
int value = ((filter.Sectors != null) ? filter.Sectors.Count() : 0) + filter.Precision;
filters.Add(Builders<Organization>.Filter.Lte(x => x.RootSectorsCount, value));
}
if (filter.OrganizationTypes != null && filter.OrganizationTypes.Count > 0)
filters.Add(Builders<Organization>.Filter.In("OrganizationTypes._id", ReferenceTreeHelper.Flatten(filter.OrganizationTypes).Select(x => x.Id)));
ProjectionDefinition<Organization> proj = "{ Id : 1, OrganisationName : 1, OrganizationTypes : 1, BusinessSectorsCount : {$size : $Sectors}, OrganisationTypesCount : {$size : $OrganizationTypes}, ContactsCount : {$size : $Contacts} }";
result = await _Repository.Collection.Aggregate()
.Match(Builders<Organization>.Filter.And(filters))
.Project(proj)
.Unwind<SalesCounterDetailsItem>("OrganizationTypes")
.Group(x => x, g => new SalesCounterListItem
{
Id = g.Key.Id,
Path = g.Key.OrganizationTypes.Path,
Count = g.Key.OrganisationTypesCount
})
.ToListAsync();
我对投影有疑问。它会抛出消息Unable to determine the serialization information for x => x.Sectors.Count的异常，这就是stackTrace
at MongoDB.Driver.ExpressionFieldDefinition`2.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.OperatorFilterDefinition`2.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.AndFilterDefinition`1.Render(IBsonSerializer`1 documentSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.AggregateFluent`2.<>c__DisplayClass13_0.<Match>b__0(IBsonSerializer`1 s, IBsonSerializerRegistry sr)
at MongoDB.Driver.DelegatedPipelineStageDefinition`2.Render(IBsonSerializer`1 inputSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.PipelineStageDefinition`2.MongoDB.Driver.IPipelineStageDefinition.Render(IBsonSerializer inputSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.PipelineStagePipelineDefinition`2.Render(IBsonSerializer`1 inputSerializer, IBsonSerializerRegistry serializerRegistry)
at MongoDB.Driver.MongoCollectionImpl`1.<AggregateAsync>d__20`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.ConfiguredTaskAwaitable`1.ConfiguredTaskAwaiter.GetResult()
at MongoDB.Driver.IAsyncCursorSourceExtensions.<ToListAsync>d__16`1.MoveNext()
--- End of stack trace from previous location where exception was thrown ---
at System.Runtime.CompilerServices.TaskAwaiter.ThrowForNonSuccess(Task task)
at System.Runtime.CompilerServices.TaskAwaiter.HandleNonSuccessAndDebuggerNotification(Task task)
at System.Runtime.CompilerServices.TaskAwaiter`1.GetResult()
at FinQuest.TeamPortal.Controllers.SalesCounterController.<GetOrganisationTypesCounter>d__3.MoveNext() in D:\Projects\FinQuestPlatform\01-Presentation\FinQuest.TeamPortal\Controllers\SalesCounterController.cs:line 83
对于帖子的篇幅感到抱歉，但我认为你有所有的信息可以帮助我（我希望！） 提前致谢
编辑：添加组织数据样本
{
"_id" : BinData(4, "e2Ay8eLeT0yUgZF7x8eErw=="),
"Name" : "Toto",
"ZipCode" : "1001",
"City" : "Islamabad",
"Country" : {
"_id" : "C4826BE4-DCD0-4DAE-A159-A580A81BCFE9",
"DisplayName" : "Pakistan",
"Parents" : [
{
"_id" : "5834EAA5-9B81-497D-A2BB-97BC3CBC79B4",
"DisplayName" : "Asia Pacific Rim"
},
{
"_id" : "07A45302-9444-459B-B108-7C1EF16B623A",
"DisplayName" : "Southern Asia"
}
],
"Path" : "Asia Pacific Rim\\Southern Asia\\Pakistan",
"PathId" : "5834EAA5-9B81-497D-A2BB-97BC3CBC79B4\\07A45302-9444-459B-B108-7C1EF16B623A\\C4826BE4-DCD0-4DAE-A159-A580A81BCFE9"
},
"OrganizationTypes" : [
{
"_id" : "77E35293-992E-4587-94DF-9B0CDC06DDCE",
"DisplayName" : "Transactions Services (TS) department of an accounting firm",
"Parents" : [
{
"_id" : "7EE2315D-9B4D-447F-97B5-EA21AC71AC55",
"DisplayName" : "Advisors"
},
{
"_id" : "C948A2E4-852A-4B14-A1ED-65C2B2CB6EC4",
"DisplayName" : "Financial Services providers (FS providers)"
}
],
"Path" : "Advisors\\Financial Services providers (FS providers)\\Transactions Services (TS) department of an accounting firm",
"PathId" : "7EE2315D-9B4D-447F-97B5-EA21AC71AC55\\C948A2E4-852A-4B14-A1ED-65C2B2CB6EC4\\77E35293-992E-4587-94DF-9B0CDC06DDCE"
}
],
"Sectors" : [
{
"_id" : "AAFF7B87-76A1-4B5B-95AD-80C65B03AA21",
"DisplayName" : "Telecom",
"Parents" : [
{
"_id" : "C093170A-7898-430F-8902-FFBD0CD69194",
"DisplayName" : "Communications"
}
],
"Path" : "Communications\\Telecom",
"PathId" : "C093170A-7898-430F-8902-FFBD0CD69194\\AAFF7B87-76A1-4B5B-95AD-80C65B03AA21"
},
{
"_id" : "C57D5E33-6E65-4BE0-801A-F4273F0955F3",
"DisplayName" : "Apparel & Textile Products",
"Parents" : [
{
"_id" : "50E99257-723C-4780-987A-E71124001EFC",
"DisplayName" : "Consumer Discretionary"
}
],
"Path" : "Consumer Discretionary\\Apparel & Textile Products",
"PathId" : "50E99257-723C-4780-987A-E71124001EFC\\C57D5E33-6E65-4BE0-801A-F4273F0955F3"
},
{
"_id" : "7C05D920-AA39-427F-840E-69C03ADBE55C",
"DisplayName" : "Consumer Products",
"Parents" : [
{
"_id" : "22A6DD29-66B2-4D22-A2BD-A441CF674926",
"DisplayName" : "Consumer Staples"
}
],
"Path" : "Consumer Staples\\Consumer Products",
"PathId" : "22A6DD29-66B2-4D22-A2BD-A441CF674926\\7C05D920-AA39-427F-840E-69C03ADBE55C"
}
],
"CountryAreas" : [
{
"_id" : "C4826BE4-DCD0-4DAE-A159-A580A81BCFE9",
"DisplayName" : "Pakistan",
"Parents" : [
{
"_id" : "5834EAA5-9B81-497D-A2BB-97BC3CBC79B4",
"DisplayName" : "Asia Pacific Rim"
},
{
"_id" : "07A45302-9444-459B-B108-7C1EF16B623A",
"DisplayName" : "Southern Asia"
}
],
"Path" : "Asia Pacific Rim\\Southern Asia\\Pakistan",
"PathId" : "5834EAA5-9B81-497D-A2BB-97BC3CBC79B4\\07A45302-9444-459B-B108-7C1EF16B623A\\C4826BE4-DCD0-4DAE-A159-A580A81BCFE9"
}
]
}