我在尝试索引存储在DocumentDb集合中的文档时遇到问题。
索引器的数据源是使用自定义SQL定义的,用于检索已更改的文档。我要索引的文档有一个名为LocationGP
的属性,它是一个Microsoft.Spatial.GeographyPoint,并映射到索引的一个字段,其名称相同,并定义为DataType.GeographyPoint
尝试创建索引器时出现的错误是:
列' LocationGP'是JObject类型,与索引中的Edm.GeographyPoint类型字段不兼容
有什么想法吗?
这是DataSource的定义:
return new DataSource()
{
Name = "opportunities-datasource",
Container = new DataContainer()
{
Name = "Companies",
Query = @"SELECT o.id,
o.CompanyName,
o.LocationGP,
o.Location.CityName AS LocationCity,
o.Location.StateName AS LocationState,
o.Location.CountryName AS LocationCountry,
o._ts
FROM Companies o WHERE o.DocType = 1 AND o._ts > @HighWaterMark"
},
Type = "documentdb",
Credentials = new DataSourceCredentials()
{
ConnectionString = String.Format("AccountEndpoint={0};AccountKey={1};Database=CompaniesDb", DocumentDbEndpointUri, DocumentDbPrimaryKey)
},
DataChangeDetectionPolicy = new HighWaterMarkChangeDetectionPolicy("_ts"),
DataDeletionDetectionPolicy = new SoftDeleteColumnDeletionDetectionPolicy("Status", "2")
};
这是文件:
[{
"id": "088e1e97-6d59-40ad-a9be-620fdc7938c7",
"CompanyName": "Neptune",
"LocationGP": {
"Latitude": 39.8010482788086,
"Longitude": -89.6436004638672,
"IsEmpty": false,
"Z": null,
"M": null,
"CoordinateSystem": {
"EpsgId": 4326,
"Id": "4326",
"Name": "WGS84"
}
},
"Location": {
"CityName": "Springfield",
"CountryName": "US",
"StateName": "IL"
},
"Status": 1,
"DocType": 1,
"Timestamp": "2016-08-19T16:08:46.0481948Z",
"_ts": 1471622922
}]
答案 0 :(得分:2)
以下是Azure Search上的另外两个文档,用于说明接受哪种类型的地理实例:
基本上它需要采用GeoJSON“Point”类型格式。
答案 1 :(得分:0)
问题是function isNaN(x){
return x !== x;
}
的格式与Edm.GeographyPoint
不同。
为了使它工作,我刚刚创建了一个名为Microsoft.Spatial.GeographyPoint
的类:
EdmGeograpyPoint
然后我将LocationGP属性的类型替换为EdmLocation。
也许有一个更好的解决方案,但文档围绕这个主题混淆: https://azure.microsoft.com/en-us/documentation/articles/search-howto-dotnet-sdk/
答案 2 :(得分:0)
我对这个答案有点迟了,但我希望有人能从中受益。
我认为,解决此问题的最干净方法是继续使用“内置”类/框架,而不必创建自己的复杂类型。
我解决此问题的方法是使用一个利用Microsoft.Azure.Search.Serialization命名空间的JsonConverter。此名称空间具有GeographyPoint扩展,即'ReadGeoJsonPoint()'和'WriteJson()'扩展。
我做了以下事情:
// 1. Create a JsonConverter
using Microsoft.Azure.Search.Serialization;
public class GeographyPointJsonConverter : JsonConverter
{
public override bool CanConvert(Type objectType)
{
return objectType == typeof(GeographyPoint);
}
public override object ReadJson(JsonReader reader, Type objectType, object existingValue, JsonSerializer serializer)
{
return reader.ReadGeoJsonPoint();
}
public override void WriteJson(JsonWriter writer, object value, JsonSerializer serializer)
{
writer.WriteGeoJsonPoint(value as GeographyPoint);
}
}
//2. Added the convert to the property I was looking to index
[JsonConverter(typeof(GeographyPointJsonConverter))]