[hdf-forum] provenance

[Dimitris Servis]

Hi Quincey

if it would be possible to copy it, I would also be interested. My use case
is this: when deleting large objects from the file, I copy all objects to a
new file and delete the old one. But some applications may depend on the
time stamp of the file and therefore I would have to modify the time stamp
of the new file using OS functions. Any unique ID would solve this.

thanks!

-- dimitros

2009/3/24 Quincey Koziol <koziol at hdfgroup.org>

> Hi Matthew,
>
> On Mar 24, 2009, at 1:32 PM, Matthew Dougherty wrote:
>
>  Is there a unique identifier internally within an HDF file when it is
>> created?
>>
>> Something that would distinguish it from another HDF file created two
>> seconds later, and cannot be disabled or modified.
>> Do not want to use the operating system/file system creation date or
>> parameters in fstat, prefer a HDF api.
>>
>
>        That's a good idea...  Would a UUID fit what you are thinking?  (
> http://en.wikipedia.org/wiki/Uuid)
>
>                Quincey
>
>  On Mar 24, 2009, at 5:11 AM, Quincey Koziol wrote:
>>
>>>
>>>        BTW, tracking these time for an object can be disabled by calling
>>> H5Pset_obj_track_times() with the 'track_times' parameter set to FALSE.
>>>
>>
>>
>>
>
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