IDocumentClient.ReadDocumentCollectionFeedAsync Method

Definition

Namespace:

Microsoft.Azure.Documents

Assemblies:

Microsoft.Azure.DocumentDB.Core.dll, Microsoft.Azure.Documents.Client.dll

Packages:

Microsoft.Azure.DocumentDB v2.18.0, Microsoft.Azure.DocumentDB.Core v2.18.0

Overloads

ReadDocumentCollectionFeedAsync(String, FeedOptions)	Reads the feed (sequence) of DocumentCollection for a database from the Azure Cosmos DB service as an asynchronous operation.
ReadDocumentCollectionFeedAsync(Uri, FeedOptions)	Reads the feed (sequence) of collections for a database as an asynchronous operation in the Azure Cosmos DB service.

ReadDocumentCollectionFeedAsync(String, FeedOptions)

Reads the feed (sequence) of DocumentCollection for a database from the Azure Cosmos DB service as an asynchronous operation.

public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.FeedResponse<Microsoft.Azure.Documents.DocumentCollection>> ReadDocumentCollectionFeedAsync (string collectionsLink, Microsoft.Azure.Documents.Client.FeedOptions options = default);

abstract member ReadDocumentCollectionFeedAsync : string * Microsoft.Azure.Documents.Client.FeedOptions -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.FeedResponse<Microsoft.Azure.Documents.DocumentCollection>>

Public Function ReadDocumentCollectionFeedAsync (collectionsLink As String, Optional options As FeedOptions = Nothing) As Task(Of FeedResponse(Of DocumentCollection))

Parameters

collectionsLink

String

The SelfLink of the resources to be read. E.g. /dbs/db_rid/colls/

options

FeedOptions

(Optional) The request options for the request.

Returns

Task<FeedResponse<DocumentCollection>>

A System.Threading.Tasks containing a ResourceResponse<TResource> which wraps a DocumentCollection containing the read resource record.

Exceptions

ArgumentNullException

If collectionsLink is not set.

DocumentClientException

This exception can encapsulate many different types of errors. To determine the specific error always look at the StatusCode property. Some common codes you may get when creating a Document are:

StatusCode	Reason for exception
404	NotFound - This means the resource feed you tried to read did not exist. Check the parent rids are correct.
429	TooManyRequests - This means you have exceeded the number of request units per second. Consult the DocumentClientException.RetryAfter value to see how long you should wait before retrying this operation.

Examples

int count = 0;
string continuation = string.Empty;
do
{
    // Read the feed 10 items at a time until there are no more items to read
    FeedResponse<DocumentCollection> response = await client.ReadDocumentCollectionFeedAsync("/dbs/db_rid/colls/",
                                                    new FeedOptions
                                                    {
                                                        MaxItemCount = 10,
                                                        RequestContinuation = continuation
                                                    });

    // Append the item count
    count += response.Count;

    // Get the continuation so that we know when to stop.
     continuation = response.ResponseContinuation;
} while (!string.IsNullOrEmpty(continuation));

See also

• DocumentCollection
• RequestOptions
• ResourceResponse<TResource>
• Task

ReadDocumentCollectionFeedAsync(Uri, FeedOptions)

Reads the feed (sequence) of collections for a database as an asynchronous operation in the Azure Cosmos DB service.

public System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.FeedResponse<Microsoft.Azure.Documents.DocumentCollection>> ReadDocumentCollectionFeedAsync (Uri databaseUri, Microsoft.Azure.Documents.Client.FeedOptions options = default);

abstract member ReadDocumentCollectionFeedAsync : Uri * Microsoft.Azure.Documents.Client.FeedOptions -> System.Threading.Tasks.Task<Microsoft.Azure.Documents.Client.FeedResponse<Microsoft.Azure.Documents.DocumentCollection>>

Public Function ReadDocumentCollectionFeedAsync (databaseUri As Uri, Optional options As FeedOptions = Nothing) As Task(Of FeedResponse(Of DocumentCollection))

Parameters

databaseUri

Uri

The URI of the parent Database.

options

FeedOptions

(Optional) The FeedOptions for the request.

Returns

Task<FeedResponse<DocumentCollection>>

The task object representing the service response for the asynchronous operation.