SQL Server

Unzip Files in a Date Range

See more Zip Examples

Demonstrates how to use the Zip.MinDate and Zip.MaxDate properties to unzip only those files with a last-modified date within a date range.

Note: This example requires Chilkat v10.0.0 or greater.

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

    -- This example assumes the Chilkat API to have been previously unlocked.
    -- See Global Unlock Sample for sample code.

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

    EXEC sp_OAMethod @zip, 'OpenZip', @success OUT, 'qa_data/zips/sample.zip'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @zip
        RETURN
      END

    -- The MinDate and MaxDate properties use the timestamp date/time string format.
    -- Here are some examples:
    -- YYYY-MM-DD (e.g., 2024-07-31)
    -- YYYY-MM-DDTHH:MM:SS�HH:MM (e.g., 2024-07-31T12:34:56+02:00)
    -- 2024-07-31T12:34:56Z (the "Z" denotes Zulu time, or UTC)

    -- Only unzip files having a last-modified date greater than 1-Jan-2017
    EXEC sp_OASetProperty @zip, 'MinDate', '2017-01-01T00:00:00Z'

    -- Also, only unzip files having a last-modified date less than the end of 2020
    EXEC sp_OASetProperty @zip, 'MaxDate', '2020-12-31T23:59:59Z'

    -- You don't need to specify both MinDate and MaxDate.
    -- You can specify only one or the other if needed.

    -- The MinDate/MaxDate properties apply to all of the Chilkat methods for unzipping.

    DECLARE @numUnzipped int
    EXEC sp_OAMethod @zip, 'Unzip', @numUnzipped OUT, 'c:/temp/unzipDir'
    IF @numUnzipped < 0
      BEGIN
        EXEC sp_OAGetProperty @zip, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @zip
        RETURN
      END

    EXEC sp_OAMethod @zip, 'CloseZip', NULL

    EXEC @hr = sp_OADestroy @zip


END
GO