SQL Server

PayPal - Generate Invoice Number

See more PayPal Examples

Generates the next invoice number that is available to the user.

Note: This example requires Chilkat v9.5.0.65 or greater.

SQL Server

--
CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @iTmp0 int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

    --  Note: Requires Chilkat v9.5.0.65 or greater.

    --  This requires the Chilkat API to have been previously unlocked.
    --  See Global Unlock Sample for sample code.

    --  Load our previously obtained access token. (see PayPal OAuth2 Access Token)
    DECLARE @jsonToken int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @jsonToken OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @jsonToken, 'LoadFile', @success OUT, 'qa_data/tokens/paypal.json'

    --  Build the Authorization request header field value.
    DECLARE @sbAuth int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbAuth OUT

    --  token_type should be "Bearer"
    EXEC sp_OAMethod @jsonToken, 'StringOf', @sTmp0 OUT, 'token_type'
    EXEC sp_OAMethod @sbAuth, 'Append', @success OUT, @sTmp0
    EXEC sp_OAMethod @sbAuth, 'Append', @success OUT, ' '
    EXEC sp_OAMethod @jsonToken, 'StringOf', @sTmp0 OUT, 'access_token'
    EXEC sp_OAMethod @sbAuth, 'Append', @success OUT, @sTmp0

    --  Make the initial connection.
    --  A single REST object, once connected, can be used for many PayPal REST API calls.
    --  The auto-reconnect indicates that if the already-established HTTPS connection is closed,
    --  then it will be automatically re-established as needed.
    DECLARE @rest int
    EXEC @hr = sp_OACreate 'Chilkat.Rest', @rest OUT

    DECLARE @bAutoReconnect int
    SELECT @bAutoReconnect = 1
    EXEC sp_OAMethod @rest, 'Connect', @success OUT, 'api.sandbox.paypal.com', 443, 1, @bAutoReconnect
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jsonToken
        EXEC @hr = sp_OADestroy @sbAuth
        EXEC @hr = sp_OADestroy @rest
        RETURN
      END

    --  ----------------------------------------------------------------------------------------------
    --  The code above this comment could be placed inside a function/subroutine within the application
    --  because the connection does not need to be made for every request.  Once the connection is made
    --  the app may send many requests..
    --  ----------------------------------------------------------------------------------------------

    --  Clear the REST object of any headers or query params from previous requests.
    EXEC sp_OAMethod @rest, 'ClearAllHeaders', @success OUT
    EXEC sp_OAMethod @rest, 'ClearAllQueryParams', @success OUT

    EXEC sp_OAMethod @sbAuth, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Authorization', @sTmp0

    --  Send the POST request with an emtpy body and get the JSON response.
    DECLARE @sbJsonRequest int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJsonRequest OUT

    DECLARE @sbJsonResponse int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJsonResponse OUT

    EXEC sp_OAMethod @rest, 'FullRequestSb', @success OUT, 'POST', '/v1/invoicing/invoices/next-invoice-number', @sbJsonRequest, @sbJsonResponse
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @rest, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @jsonToken
        EXEC @hr = sp_OADestroy @sbAuth
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbJsonRequest
        EXEC @hr = sp_OADestroy @sbJsonResponse
        RETURN
      END

    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'LoadSb', @success OUT, @sbJsonResponse


    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    PRINT 'Response Status Code = ' + @iTmp0

    --  Did we get a 200 success response?
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    IF @iTmp0 <> 200
      BEGIN
        EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
        PRINT @sTmp0

        PRINT 'Failed.'
        EXEC @hr = sp_OADestroy @jsonToken
        EXEC @hr = sp_OADestroy @sbAuth
        EXEC @hr = sp_OADestroy @rest
        EXEC @hr = sp_OADestroy @sbJsonRequest
        EXEC @hr = sp_OADestroy @sbJsonResponse
        EXEC @hr = sp_OADestroy @json
        RETURN
      END

    --  Sample JSON response is shown below.
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    PRINT '----------------------'

    EXEC sp_OAMethod @json, 'StringOf', @sTmp0 OUT, 'number'
    PRINT 'Next invoice number: ' + @sTmp0

    PRINT 'success'

    --  ------------------------------------------------
    --  A sample JSON response:

    --  	{ 
    --  	  "number": "0003"
    --  	}

    EXEC @hr = sp_OADestroy @jsonToken
    EXEC @hr = sp_OADestroy @sbAuth
    EXEC @hr = sp_OADestroy @rest
    EXEC @hr = sp_OADestroy @sbJsonRequest
    EXEC @hr = sp_OADestroy @sbJsonResponse
    EXEC @hr = sp_OADestroy @json


END
GO