(SQL Server) Get a Structure Property Value from XMP

Demonstrates how to open a JPG or TIF image file, access the XMP metadata, and fetch the value of a structure property, such as the Iptc4xmpCore:CiTelWork (found within the Iptc4xmpCore:CreatorContactInfo structure).

Chilkat ActiveX Downloads ActiveX for 32-bit and 64-bit Windows

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

    DECLARE @xmp int
    -- Use "Chilkat_9_5_0.Xmp" for versions of Chilkat < 10.0.0
    EXEC @hr = sp_OACreate 'Chilkat.Xmp', @xmp OUT
    IF @hr <> 0
    BEGIN
        PRINT 'Failed to create ActiveX component'
        RETURN
    END

    -- Load a JPG or TIF image file.
    -- Sample JPG's with XMP metadata may be found at:
    -- http://www.chilkatsoft.com/testData/xmp/sample1.jpg
    -- http://www.chilkatsoft.com/testData/xmp/sample2.jpg
    -- http://www.chilkatsoft.com/testData/xmp/sample3.jpg
    DECLARE @success int
    EXEC sp_OAMethod @xmp, 'LoadAppFile', @success OUT, 'sample1.jpg'
    IF @success <> 1
      BEGIN
        EXEC sp_OAGetProperty @xmp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
        EXEC @hr = sp_OADestroy @xmp
        RETURN
      END


    EXEC sp_OAGetProperty @xmp, 'NumEmbedded', @iTmp0 OUT
    PRINT 'Num embedded XMP docs: ' + @iTmp0

    -- Assuming there is at least one, get the 1st.
    -- (There is typically never more than one, but theoretically it's possible.)
    DECLARE @xml int
    EXEC sp_OAMethod @xmp, 'GetEmbedded', @xml OUT, 0
    EXEC sp_OAGetProperty @xmp, 'LastMethodSuccess', @iTmp0 OUT
    IF @iTmp0 = 1
      BEGIN

        DECLARE @propVal nvarchar(4000)
        EXEC sp_OAMethod @xmp, 'GetStructValue', @propVal OUT, @xml, 'Iptc4xmpCore:CreatorContactInfo', 'Iptc4xmpCore:CiTelWork'
        EXEC sp_OAGetProperty @xmp, 'LastMethodSuccess', @iTmp0 OUT
        IF @iTmp0 <> 1
          BEGIN

            PRINT 'Not found.'
          END
        ELSE
          BEGIN

            PRINT @propVal
          END
        EXEC @hr = sp_OADestroy @xml

      END
    ELSE
      BEGIN
        EXEC sp_OAGetProperty @xmp, 'LastErrorText', @sTmp0 OUT
        PRINT @sTmp0
      END

    EXEC @hr = sp_OADestroy @xmp


END
GO