File Existence Check

Testing to see if a file exists on the FTP server. The GetSizeByName method is a convenient way to check if a file exists. It will return -1 if the file does not exist, otherwise it returns the size of the file in bytes.

Download Chilkat FTP2 ActiveX

CREATE PROCEDURE ChilkatSample
AS
BEGIN
    DECLARE @hr int
    DECLARE @sTmp0 nvarchar(4000)
    DECLARE @ftp int
    EXEC @hr = sp_OACreate 'Chilkat.Ftp2', @ftp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    DECLARE @success int

    --  Any string unlocks the component for the 1st 30-days.
    EXEC sp_OAMethod @ftp, 'UnlockComponent', @success OUT, 'Anything for 30-day trial'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    EXEC sp_OASetProperty @ftp, 'Hostname', 'ftp.***.com'
    EXEC sp_OASetProperty @ftp, 'Username', '***'
    EXEC sp_OASetProperty @ftp, 'Password', '***'

    --  Connect and login to the FTP server.
    EXEC sp_OAMethod @ftp, 'Connect', @success OUT
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Set the current remote directory to where the file is located:
    EXEC sp_OAMethod @ftp, 'ChangeRemoteDir', @success OUT, '/something'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @ftp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        RETURN
      END

    --  Test to see if the file exists by getting the file size by name.
    --  If a -1 is returned, the file does not exist.
    DECLARE @fileSize int

    EXEC sp_OAMethod @ftp, 'GetSizeByName', @fileSize OUT, 'test123.txt'
    IF @fileSize < 0
      BEGIN

        PRINT 'file does not exist'
      END
    ELSE
      BEGIN



        PRINT 'file exists and is ' + STR(@fileSize) + ' bytes in size'
      END

    EXEC sp_OAMethod @ftp, 'Disconnect', NULL
END
GO