Dear Michele
my replies below
Regards
Steve Hanson
Architect, IBM
DFDL
Co-Chair, OGF
DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
From:
Michele Zundo <michele.zundo@esa.int>
To:
Steve Hanson/UK/IBM@IBMGB
Cc:
Maurizio De Bartolomei
<Maurizio.De.Bartolomei@esa.int>, Montserrat Piñol <mpinol@eopp.esa.int>,
"Rui Mestre (DME)" <rui.mestre@deimos.com.pt>, DFDL-WG
<dfdl-wg@ogf.org>
Date:
06/05/2015 09:57
Subject:
Re: [DFDL]:
First Release of DFDL4S Parser Library
Dear Steve,
my answers below.
On 06 May 2015, at 10:49 , Steve Hanson <smh@uk.ibm.com>
wrote:
Dear Michele
Good to hear from you. Thank you for letting me know about the latest developments
with S2G Data Viewer.
I am sure the DFDL Working Group would be interested in a demo of S2G.
What is your availability on Tuesdays at 4pm-5pm UK?
I’m currently on mission abroad for the rst of the week,
but Tue 12th May at 16:00 is (for now) a possibility as I should be back
in office.
Can we touch base to confirm this next Monday ? (by e-mail).
SMH: Yes that would be
fine.
Meantime do you have a document that you could send which summarises which
features of the DFDL language you have used, and some example schemas?
The application and the documentation are free download
from our web site as mentioned below. (http://eop-cfi.esa.int/index.php/applications/s2g-data-viewer/download)
free registration (no string attached) is required.
Please note that the DFDL 1.0 specification was re-published in October
2014, replacing and obsoleting the version from January 2011. Does
S2G comply with the October 2014 version (https://www.ogf.org/documents/GFD.207.pdf)
?
do not know. We will have to check. In general
I would suggest you define and update
the document version number and not only the date
to make clear that an update otherwise it
always look like it is version 1.0...
SMH: There is only DFDL
version 1.0 and it is October 2014. The original specification from January
2011 needed many corrections and additions to the document. However only
a few small additions to the actual syntax of the language. The WG decided
to keep the version at 1.0 so that all existing schemas (mainly written
by IBM customers) remained compliant. If a new release appears in the future
then that will be 1.1 or 2.0. I would guess that the S2G subset is
compliant with October 2014 but worth checking.
Regards
Steve Hanson
Architect, IBM
DFDL
Co-Chair, OGF
DFDL Working Group
IBM SWG, Hursley, UK
smh@uk.ibm.com
tel:+44-1962-815848
From: Michele
Zundo <michele.zundo@esa.int>
To: Steve
Hanson/UK/IBM@IBMGB
Cc: Montserrat
Piñol <mpinol@eopp.esa.int>,
Maurizio De Bartolomei <Maurizio.De.Bartolomei@esa.int>,
"Rui Mestre (DME)" <rui.mestre@deimos.com.pt>
Date: 29/04/2015
17:38
Subject: [DFDL]:
First Release of DFDL4S Parser Library
Dear Steve,
we talked some time ago when we presented the tool we developed at ESA
to inspect satellite TM and which made use of DFDL description for the
binary data
and we have included a number of your comments at the time.
Since then we have further evolved the tool (called S2G Data Viewer) and
produced as well a
standalone version of a Java library which performs the function of extracting
data field from binary data
based on a DFDL description. This library (called DFDL4S i.e. DFDL
for Space) is now available
to anybody interested. It implements only the subset of the Core capability
that we need but I think
it might be nevertheless interesting for the DFDL community.
In future we plan to expand to write capability the same library so user
can serialise their data as
per DFDL description and generate realistically looking (simulated) satellite
data.
The application and the library are available for download at http:eop-cfi.esa.int
If there is interest we could arrange a short demo of the app (using webex)
or I couldd ask
the developer to show the command line test of the DFDL4S library.
We are very happy/willing to share results/code/etc.
Best Regards
PS we are currently thinking to build “transformation” that can ingest
different type of descriptive
representation and generate the corresponding DFDL schemas.
| ESA
- European Space Agency
|
|
|
|
| Michele
Zundo
|
| Head
of Ground System Definition and Verification Office
|
| System
Support Division
|
| Earth
Observation Project Department
|
| Directorate
of Earth Observation Programmes
|
|
|
| ESTEC
|
| Kepleerlaan
1, 2200AZ Noordwijk, Netherlands
|
| michele.zundo@esa.int
| www.esa.int
|
| T.
+31 71 565 3924 | F +31 71 565 3191 |
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