SQL Server

Set a MIME Body from Binary Bytes (BinData)

Demonstrates the Chilkat Mime.SetBodyBd method, which sets the decoded body bytes from a BinData, changes the transfer encoding to base64, and preserves the bytes exactly. The only argument is the BinData.

Note: The file paths are relative to the application's current working directory. Absolute paths may also be used. Supply the paths appropriate to your own environment.

Background: This is the direct way to put arbitrary binary content into a part from memory — a generated image, a decrypted blob — without a temporary file. Chilkat base64-encodes it so the bytes survive text-based transports unchanged. Note it does not set a Content-Type or disposition, so assign those yourself to describe what the bytes are.

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SQL Server

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

    --  Demonstrates the Mime.SetBodyBd method, which sets the decoded body bytes from a BinData,
    --  changes the transfer encoding to base64, and preserves the bytes exactly.  The only argument is
    --  the BinData.

    --  Put the binary body bytes into a BinData.
    DECLARE @bd int
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bd OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    EXEC sp_OAMethod @bd, 'LoadFile', @success OUT, 'qa_data/photo.jpg'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @bd, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @bd
        RETURN
      END

    DECLARE @mime int
    EXEC @hr = sp_OACreate 'Chilkat.Mime', @mime OUT

    --  Set a Content-Type for the binary content (SetBodyBd does not set one itself).
    EXEC sp_OASetProperty @mime, 'ContentType', 'image/jpeg'

    EXEC sp_OAMethod @mime, 'SetBodyBd', @success OUT, @bd
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @mime, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @bd
        EXEC @hr = sp_OADestroy @mime
        RETURN
      END


    EXEC sp_OAGetProperty @bd, 'NumBytes', @iTmp0 OUT

    PRINT 'Body set from ' + @iTmp0 + ' bytes.'

    EXEC @hr = sp_OADestroy @bd
    EXEC @hr = sp_OADestroy @mime


END
GO