SQL Server

Load Entire File into BinData

Demonstrates how to load an entire file into a BinData object. 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
    -- Important: Do not use nvarchar(max).  See the warning about using nvarchar(max).
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @success int
    SELECT @success = 0

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

    EXEC sp_OAMethod @fac, 'OpenForRead', @success OUT, 'qa_data/pdf/sample.pdf'
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        RETURN
      END

    DECLARE @bd int
    EXEC @hr = sp_OACreate 'Chilkat.BinData', @bd OUT

    DECLARE @maxBytesToRead int
    SELECT @maxBytesToRead = 99999999
    EXEC sp_OAMethod @fac, 'FileReadBd', @success OUT, @maxBytesToRead, @bd
    IF @success = 0
      BEGIN
        EXEC sp_OAGetProperty @fac, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @fac
        EXEC @hr = sp_OADestroy @bd
        RETURN
      END

    EXEC sp_OAMethod @fac, 'FileClose', NULL

    -- The bd object contains the file data...
    EXEC sp_OAMethod @bd, 'WriteFile', @success OUT, 'qa_output/sample.pdf'

    EXEC @hr = sp_OADestroy @fac
    EXEC @hr = sp_OADestroy @bd


END
GO