Sample code for 30+ languages & platforms
SQL Server

PayPal - Refund Captured Payment

See more PayPal Examples

Refunds a captured payment, by ID. Include an amount object in the JSON request body.

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

Chilkat SQL Server Downloads

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 v9.5.0.64 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..
    --  ----------------------------------------------------------------------------------------------

    --  To refund a particular amount, build JSON such as this:
    DECLARE @json int
    EXEC @hr = sp_OACreate 'Chilkat.JsonObject', @json OUT

    EXEC sp_OASetProperty @json, 'EmitCompact', 0
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'amount.total', '4.54'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'amount.currency', 'USD'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'description', 'Athletic socks'
    EXEC sp_OAMethod @json, 'UpdateString', @success OUT, 'reason', 'Refunding because color was incorrect'
    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    --  The JSON:

    --  	{ 
    --  	  "amount": { 
    --  	    "total": "4.54",
    --  	    "currency": "USD"
    --  	  },
    --  	  "description": "Athletic socks",
    --  	  "reason": "Refunding because color was incorrect"
    --  	}
    --  
    EXEC sp_OAMethod @sbAuth, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Authorization', @sTmp0
    EXEC sp_OAMethod @rest, 'AddHeader', @success OUT, 'Content-Type', 'application/json'

    --  The capture ID is added to the path.
    --  To list your captures: Find Captures. 
    DECLARE @sbPath int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbPath OUT

    EXEC sp_OAMethod @sbPath, 'Append', @success OUT, '/v1/payments/capture/capture_id/refund'
    DECLARE @numReplaced int
    EXEC sp_OAMethod @sbPath, 'Replace', @numReplaced OUT, 'capture_id', '1LY5310469661362J'

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

    EXEC sp_OASetProperty @json, 'EmitCompact', 1
    EXEC sp_OAMethod @json, 'EmitSb', @success OUT, @sbJsonRequest
    DECLARE @sbJsonResponse int
    EXEC @hr = sp_OACreate 'Chilkat.StringBuilder', @sbJsonResponse OUT

    EXEC sp_OAMethod @sbPath, 'GetAsString', @sTmp0 OUT
    EXEC sp_OAMethod @rest, 'FullRequestSb', @success OUT, 'POST', @sTmp0, @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 @json
        EXEC @hr = sp_OADestroy @sbPath
        EXEC @hr = sp_OADestroy @sbJsonRequest
        EXEC @hr = sp_OADestroy @sbJsonResponse
        RETURN
      END

    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 201 success response?
    EXEC sp_OAGetProperty @rest, 'ResponseStatusCode', @iTmp0 OUT
    IF @iTmp0 <> 201
      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 @json
        EXEC @hr = sp_OADestroy @sbPath
        EXEC @hr = sp_OADestroy @sbJsonRequest
        EXEC @hr = sp_OADestroy @sbJsonResponse
        RETURN
      END

    EXEC sp_OAMethod @json, 'Emit', @sTmp0 OUT
    PRINT @sTmp0

    PRINT 'Success.'

    --  A successful JSON response:
    --  The "id" is the refund_id.

    --  	{ 
    --  	  "id": "77B77607RR7243500",
    --  	  "create_time": "2016-11-27T01:38:25Z",
    --  	  "update_time": "2016-11-27T01:38:25Z",
    --  	  "state": "completed",
    --  	  "amount": { 
    --  	    "total": "4.54",
    --  	    "currency": "USD"
    --  	  },
    --  	  "capture_id": "1LY5310469661362J",
    --  	  "parent_payment": "PAY-2CY489250W145633HLA3DK3Y",
    --  	  "links": [
    --  	    { 
    --  	      "href": "https://api.sandbox.paypal.com/v1/payments/refund/77B77607RR7243500",
    --  	      "rel": "self",
    --  	      "method": "GET"
    --  	    },
    --  	    { 
    --  	      "href": "https://api.sandbox.paypal.com/v1/payments/payment/PAY-2CY489250W145633HLA3DK3Y",
    --  	      "rel": "parent_payment",
    --  	      "method": "GET"
    --  	    },
    --  	    { 
    --  	      "href": "https://api.sandbox.paypal.com/v1/payments/capture/1LY5310469661362J",
    --  	      "rel": "capture",
    --  	      "method": "GET"
    --  	    }
    --  	  ]
    --  	}

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


END
GO