Created
July 11, 2012 19:23
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Sample JSON Light client
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using System; | |
using System.Collections.Generic; | |
using System.Data.Services.Client; | |
using System.Linq; | |
using System.Text; | |
using System.Xml; | |
using Microsoft.Data.Edm; | |
using Microsoft.Data.Edm.Csdl; | |
using Microsoft.Data.Edm.Validation; | |
using Scratch.NW; | |
namespace Scratch | |
{ | |
internal class Program | |
{ | |
private static readonly Dictionary<Uri, IEdmModel> models = new Dictionary<Uri, IEdmModel>(); | |
private static void Main() | |
{ | |
var context = new NorthwindEntities(new Uri("http://services.odata.org/Experimental/Northwind/Northwind.svc/")); | |
// Note that for the release, code gen will likely provide a much friendlier alternative to this example | |
context.Format.UseJson(args => | |
{ | |
Uri metadataUri = args.MetadataDocumentUri; | |
if (!models.ContainsKey(metadataUri)) | |
{ | |
var xmlTextReader = new XmlTextReader(metadataUri.ToString()); | |
IEdmModel edmModel = null; | |
IEnumerable<EdmError> errors = null; | |
if (EdmxReader.TryParse(xmlTextReader, out edmModel, out errors)) | |
{ | |
models[metadataUri] = edmModel; | |
} | |
else | |
{ | |
var errorMessageBuilder = new StringBuilder("Model creation failed; please resolve the following errors in the metadata document:"); | |
foreach (EdmError error in errors) | |
{ | |
errorMessageBuilder.AppendLine(String.Format("\t{0}", error.ErrorMessage)); | |
} | |
throw new Exception(errorMessageBuilder.ToString()); | |
} | |
} | |
return new ModelResolverResult | |
{ | |
ServiceModel = models[metadataUri] | |
}; | |
}); | |
Category category = context.Categories.First(); | |
Console.WriteLine(category.CategoryName); | |
foreach (Sales_Totals_by_Amount item in context.Sales_Totals_by_Amounts) | |
{ | |
Console.WriteLine(item.SaleAmount); | |
} | |
} | |
} | |
} |
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