我有以下存储过程,只能通过id找到一个对象。
function sample(id) {
var context = getContext();
var response = context.getResponse();
var collection = context.getCollection();
var findObject = "SELECT * FROM Objects o where o.userId='" + id +"'";
// Query documents and take 1st item.
var isAccepted = collection.queryDocuments(
collection.getSelfLink(),
findObject,
function (err, feed, options) {
if (err) throw err;
// Check the feed and if empty, set the body to 'no docs found',
// else take 1st element from feed
if (!feed || !feed.length) throw new Error("Object not found");
else response.setBody(feed[0]);
});
if (!isAccepted) throw new Error('The query was not accepted by the server.');
}
这是扩展Document
的C#类public class UserPoints: Document
{
[JsonProperty("userId")]
public Guid UserId;
[JsonProperty("remainingPoints")]
public int RemainingPoints;
}
在我的main函数中,我调用上面的存储过程并期望它返回UserId的UserPoints对象。
例如:
UserPoints points = new UserPoints()
{
UserId = Guid.NewGuid(),
RemainingPoints = 1000
};
await client.CreateDocumentAsync(UriFactory.CreateDocumentCollectionUri(databaseName, collection), points);
points.Dump();
var response = await client.ExecuteStoredProcedureAsync<UserPoints>(UriFactory.CreateStoredProcedureUri(databaseName, collection, storedProcedureName), points.UserId.ToString());
response.Response.Dump();
我收到以下异常执行存储过程时无法将“Microsoft.Azure.Documents.Document”类型的对象强制转换为“UserPoints”
如果我只是停止扩展Document基类,那么一切正常,但是我无法访问更新所需的SelfLink属性。难道我做错了什么?如果ExecuteStoredProcedureAsync采用强类型,它不应该能够键入强制类型并返回该类型的对象吗?
答案 0 :(得分:0)
这是DocumentDB .NET SDK中的一个错误。我们正在调查修复程序。
请注意,作为修复程序发布之前的变通方法,您不必从Document派生到DocumentDB中存储文档。如果您需要访问某些内部属性(如ID),则可以将这些属性添加到对象中,例如如
[JsonProperty("id")] public string Id {get; set;}