(SQL Server) Transition from Email.GetSignedByCert to Email.LastSignerCert

Provides instructions for replacing deprecated GetSignedByCert method calls with LastSignerCert.

Note: This example requires Chilkat v11.0.0 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)
    DECLARE @email int
    -- Use "Chilkat_9_5_0.Email" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Email', @email OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- ...
    -- ...

    -- ------------------------------------------------------------------------
    -- The GetSignedByCert method is deprecated:

    DECLARE @certObj int
    EXEC sp_OAMethod @email, 'GetSignedByCert', @certObj OUT
    EXEC sp_OAGetProperty @email, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @email, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @email
        RETURN
      END

    -- ...
    -- ...

    EXEC @hr = sp_OADestroy @certObj

    -- ------------------------------------------------------------------------
    -- Do the equivalent using LastSignerCert.
    -- Your application creates a new, empty Cert object which is passed 
    -- in the last argument and filled upon success.

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

    DECLARE @success int
    EXEC sp_OAMethod @email, 'LastSignerCert', @success OUT, 0, @certOut
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @email, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @email
        EXEC @hr = sp_OADestroy @certOut
        RETURN
      END

    EXEC @hr = sp_OADestroy @email
    EXEC @hr = sp_OADestroy @certOut


END
GO