(SQL Server) OneDrive -- Download Text File to Memory

See more OneDrive Examples

Downloads a text file (such as XML, JSON, plain-text, HTML, etc.) into a StringBuilder object.

Note: This example requires Chilkat v9.5.0.97 or greater.

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

-- Important: See this note about string length limitations for strings returned by sp_OAMethod calls.
--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    -- This example requires the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

    -- This example uses the OAuth client credentials flow.
    -- See How to Create an Azure App Registration for OAuth 2.0 Client Credentials

    -- Use your client ID, client secret, and tenant ID in the following lines
    DECLARE @json int
    -- Use "Chilkat_9_5_0.JsonObject" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'client_id', '2871da2c-8176-4b7f-869b-2311aa82e743'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'client_secret', '2hu9Q~r5QuryUcEkNbg1btLtnfU1VUXzhSCG6brH'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'scope', 'https://graph.microsoft.com/.default'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'token_endpoint', 'https://login.microsoftonline.com/114d7ed6-71bf-4dbe-a866-748364121bf2/oauth2/v2.0/token'

    DECLARE @http int
    -- Use "Chilkat_9_5_0.Http" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Http', @http OUT

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    EXEC sp_OASetProperty @http, 'AuthToken', @sTmp0

    -- Sends the following GET request:
    -- GET https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{item-path}:/content

    -- Make sure to automatically follow redirects
    EXEC sp_OASetProperty @http, 'FollowRedirects', 1

    -- This example will download /Misc/hamlet.xml
    EXEC sp_OAMethod @http, 'SetUrlVar', @success OUT, 'item_path', 'Misc/hamlet.xml'
    EXEC sp_OAMethod @http, 'SetUrlVar', @success OUT, 'user_id', '4fe732c3-322e-4a6b-b729-2fd1eb5c6104'

    DECLARE @sbXml int
    -- Use "Chilkat_9_5_0.StringBuilder" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbXml OUT

    DECLARE @expectedCharset nvarchar(4000)
    SELECT @expectedCharset = 'utf-8'
    DECLARE @url nvarchar(4000)
    SELECT @url = 'https://graph.microsoft.com/v1.0/users/{$user_id}/drive/root:/{$item_path}:/content'
    DECLARE @success int
    EXEC sp_OAMethod @http, 'DownloadSb', @success OUT, @url, @expectedCharset, @sbXml
    EXEC sp_OAGetProperty @http, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 <> 1
      BEGIN
        EXEC sp_OAGetProperty @http, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @sbXml
        RETURN
      END

    -- If the response status code was not 200, then it failed.
    EXEC sp_OAGetProperty @http, 'LastStatus', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN

        EXEC sp_OAGetProperty @http, 'LastStatus', @iTmp0 OUT
        PRINT 'Response Status Code = ' + @iTmp0

        PRINT 'Failed.'
        EXEC @hr = sp_OADestroy @json
        EXEC @hr = sp_OADestroy @http
        EXEC @hr = sp_OADestroy @sbXml
        RETURN
      END

    -- If we got here, then the file was successfully downloaded.

    PRINT 'Download from OneDrive successful.'

    PRINT 'The file is contained in sbXml.'

    EXEC @hr = sp_OADestroy @json
    EXEC @hr = sp_OADestroy @http
    EXEC @hr = sp_OADestroy @sbXml


END
GO