SQL Server

Transition from MailMan.GetHeaders to MailMan.FetchRange

Provides instructions for replacing deprecated GetHeaders method calls with FetchRange. SQL Server

-- 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 @success int
    SELECT @success = 0

    DECLARE @mailman int
    EXEC @hr = sp_OACreate 'Chilkat.MailMan', @mailman OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- ...
    -- ...

    DECLARE @numBodyLines int
    SELECT @numBodyLines = 3
    DECLARE @fromIndex int
    SELECT @fromIndex = 0
    DECLARE @toIndex int
    SELECT @toIndex = 9

    -- ------------------------------------------------------------------------
    -- The GetHeaders method is deprecated:

    DECLARE @bundleObj int
    EXEC sp_OAMethod @mailman, 'GetHeaders', @bundleObj OUT, @numBodyLines, @fromIndex, @toIndex
    EXEC sp_OAGetProperty @mailman, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 0
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mailman
        RETURN
      END

    -- ...
    -- ...

    EXEC @hr = sp_OADestroy @bundleObj

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

    DECLARE @keepOnServer int
    SELECT @keepOnServer = 1
    DECLARE @headersOnly int
    SELECT @headersOnly = 1

    DECLARE @bundleOut int
    EXEC @hr = sp_OACreate 'Chilkat.EmailBundle', @bundleOut OUT

    EXEC sp_OAMethod @mailman, 'FetchRange', @success OUT, @keepOnServer, @headersOnly, @numBodyLines, @fromIndex, @toIndex, @bundleOut
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mailman, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @mailman
        EXEC @hr = sp_OADestroy @bundleOut
        RETURN
      END

    EXEC @hr = sp_OADestroy @mailman
    EXEC @hr = sp_OADestroy @bundleOut


END
GO