I have created an Azure Function (HTTP triggered) that is running a spatial query against a Cosmos DB using Linq. It returns rock elements that are within a geometric polygon boundary.
When running this, I get the following error:
Exception while executing function: example One or more errors occurred. (Method 'Within' is not supported., Windows/10.0.14393 documentdb.netcore-sdk/2.11.6) Method 'Within' is not supported., Windows/10.0.14393 documentdb.netcore-sdk/2.11.6
I have checked I am using all the latest NuGet library versions. Can someone give me a hint on what else to check? This is the code:
public static class Example
{
[FunctionName("example")]
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "example")] HttpRequest req,
[CosmosDB(
databaseName: "a",
collectionName: "b",
ConnectionStringSetting = "CosmosDBConnection")]
DocumentClient client,
ILogger log)
{
log.LogInformation($"GetRockLocationsSpatial for coordinates");
Uri collectionUri = UriFactory.CreateDocumentCollectionUri("a", "b");
Polygon rectangularArea = new Polygon(
new[]
{
new LinearRing(new [] {
new Position(100, 50),
new Position(130, 50),
new Position(130, 40),
new Position(100, 40),
new Position(100, 50)
})
});
var rocks =client.CreateDocumentQuery<RockLocationDocument>(collectionUri).Where(a => a.location.Within(rectangularArea)).AsEnumerable();
foreach (RockLocationDocument rock in rocks)
{
Console.WriteLine("\t" + rock);
}
return new OkObjectResult(JsonConvert.SerializeObject(rocks));
}
}
}
I'm not sure what causes your error. But I can get the result with your code. You can follow this and have a try.
RockLocationDocument.cs
using Microsoft.Azure.Documents.Spatial;
namespace example
{
public class RockLocationDocument
{
public string id { get; set; }
public Point location { get; set; }
}
}
Founction.cs
I pass FeedOption within CreateDocumentQuery
method.
using System;
using System.Threading.Tasks;
using Microsoft.AspNetCore.Mvc;
using Microsoft.Azure.WebJobs;
using Microsoft.Azure.WebJobs.Extensions.Http;
using Microsoft.AspNetCore.Http;
using Microsoft.Extensions.Logging;
using Newtonsoft.Json;
using Microsoft.Azure.Documents.Client;
using Microsoft.Azure.Documents.Spatial;
using System.Linq;
namespace example
{
public static class Example
{
[FunctionName("example")]
public static async Task<IActionResult> Run(
[HttpTrigger(AuthorizationLevel.Function, "post", Route = "example")] HttpRequest req,
[CosmosDB(
databaseName: "Test",
collectionName: "site",
ConnectionStringSetting = "sogo_DOCUMENTDB")]
DocumentClient client,
ILogger log)
{
log.LogInformation($"GetRockLocationsSpatial for coordinates");
Uri collectionUri = UriFactory.CreateDocumentCollectionUri("Test", "site");
Polygon rectangularArea = new Polygon(
new[]
{
new LinearRing(new [] {
new Position(100, 50),
new Position(130, 50),
new Position(130, 40),
new Position(100, 40),
new Position(100, 50)
})
});
var rocks =client.CreateDocumentQuery<RockLocationDocument>(collectionUri,new FeedOptions { EnableCrossPartitionQuery = true }).Where(a => a.location.Within(rectangularArea)).AsEnumerable();
foreach (RockLocationDocument rock in rocks)
{
Console.WriteLine("\t" + JsonConvert.SerializeObject(rock));
}
return new OkObjectResult(JsonConvert.SerializeObject(rocks));
}
}
}
Library:
Test by using postman:
Hope this can help you.
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