March 2007 - dfdl-wg - lists.ogf.org

can someone draft this?
by Mike Beckerle 28 Mar '07

28 Mar '07

I've been working on the DFDL spec quite a bit. Steve Hanson suggested that this woudl be good to have in the document before the April OGF. 5. What is DFDL, including a sub-section giving scope of DFDL 1.0. Right now the doc has this content which is pretty much entirely TBD/placeholder. Can someone step up to the plate to revise this? I am working on other aspects than this, i.e., trying to reorganize and straighten out the decomposition of the semantics into the parse function and parse strategies. I really want to focus on this aspect, but I agree with steve that thsi woudl be great to have done in time. ----------------------------------- What is DFDL Version 1.0? Version 1.0 of DFDL is a language capable of expressing a wide array of binary and text-based data formats. DFDL is capable of describing binary data as found in the data structures of Cobol, C, PL1, Fortran, etc. In particular, it is able to describe repeating sub-arrays where the length of an array is stored in another location of the structure. TBD.... DFDL is capable of describing a wide variety of textual data formats. These include TBD:list of examples. TBD: mixtures. Composition properties. I.e., two formats can be nested, concatenated, etc. to create a new working format definition. (limitations here due to regexp?) The following topics have been deferred to future versions of the standard: Extensibility: There are real examples of proprietary data format description languages that we use as our base of experience from which to derive standard DFDL. However, there are no examples of extensible format description languages; hence, while extensibility is desirable in DFDL, there is not yet a base of experience with extensibility from which to derive a standard. Layering: Some formats require data to be described in multiple layers. That is, where one element's contents becomes the representation of another element. DFDL V1.0 allows description of only one layer.

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FYI: dfdl.com now available. Pricey. Grrrr.
by Mike Beckerle 27 Mar '07

27 Mar '07

Wow, we are famous. A domain name that costs real money! :-) The domain name dfdl.com is for sale Prices in the region of US$4250 Get On The Web Limited registered for its own websites, portals and client projects a number of generic domain names (including this one) some years ago, which are now no longer required. We are considering selling this domain name alone, or the domain name plus partially-developed website. If you are interested in this domain name please complete this offer form.

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DFDL call tomorrow - note new number/time
by Westhead, Martin (Martin) 27 Mar '07

27 Mar '07

Hi Folks, Please find below details of the DFDL dial-in. We are back to our regular slot of 1700 BST, 0900 PDT. The agenda will be to continue last week's discussion around the document changes that Mike implemented. I will have to drop after the first half hour for another call. Martin The dial-in details for tomorrow's DFDL call is show below. The UK clocks went to BST last weekend. Thus the call time will be (17:00 BST, 09:00 Pacific Daylight Savings Time) PASSCODE INFORMATION: Passcode: 1397733 ACCESS NUMBERS ------------------------------------ Click http://www.mymeetings.com/audioconferencing/globalAccessFAQ.php for information on specific country access dialing. Country Toll Numbers Freephone/Toll Free Number AUSTRIA 43-1-92-86-505 BELGIUM 32-1-150-0313 DENMARK 45-7014-0241 FRANCE PARIS: 33-1-70-75-25-34 080-563-9912 GERMANY 49-69-2222-20597 0800-101-6628 IRELAND 353-1-247-5273 ITALY 39-02-3601-0918 LUXEMBOURG 352-27-000-1319 NETHERLANDS 31-20-718-8531 SPAIN 34-91-414-63-07 800-098-195 SWEDEN 46-8-505-78-547 SWITZERLAND 41-44-580-4388 0800-001-371 UNITED KINGDOM LONDON: 44-20-7019-0801 0800-279-9191 USA 866-253-5305 Restrictions may exist when accessing freephone/toll free numbers using a mobile telephone. Country Freephone numbers cannot be used outside of the country listed. Please provide an International Country toll number to your participants as a back-up in the event of any Freephone restrictions being encountered. To learn more about how to dial a Global Access number go to https://www.mymeetings.com/audioconferencing/global_access.php Regards, Geoff Judd WebSphere Message Brokers Development IBM United Kingdom Ltd. Hursley Telephone: +44-1962-818461 E-mail: JUDDG(a)uk.ibm.com _____ Unless stated otherwise above: IBM United Kingdom Limited - Registered in England and Wales with number 741598. Registered office: PO Box 41, North Harbour, Portsmouth, Hampshire PO6 3AU Dr. Martin Westhead Technical Lead, Assured Networks Group, Milpitas, CA| westhead(a)avaya.com |+1 408-577-7810 AVAYA

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DFDL call in 45 mins
by Westhead, Martin (Martin) 21 Mar '07

21 Mar '07

Agenda - Discuss Mike's modifications to the document DFDL conference call: 9am PDT Conference call instructions: Number: 1-800-664-0771 At the automated answering system, press 0 for the operator. Ask for the "Daffodil working group" call. Dr. Martin Westhead Technical Lead, Assured Networks Group, Milpitas, CA| westhead(a)avaya.com |+1 408-577-7810 AVAYA

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Meeting time change due to DST - new bridge details
by Westhead, Martin (Martin) 14 Mar '07

14 Mar '07

Hi Folks, We have had some confusion over the time because of the early US move to DST. We will reschedule the meeting for the original time in the UK but 1 hour later in the US (everyone else will have to figure this out for yourselves :-) ) . So this will be 10:00 PDT. I assume that we cannot use our regular bridge at this time, so we can use mine. The details are: Phone number: +1 866 282 922 Code: 785343 Talk to you in 40 mins. Martin Dr. Martin Westhead Technical Lead, Assured Networks Group, Milpitas, CA| westhead(a)avaya.com |+1 408-577-7810 AVAYA

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DFDL telcon today
by Westhead, Martin (Martin) 14 Mar '07

14 Mar '07

DFDL conference call: 9am PST Conference call instructions: Number: 1-800-664-0771 At the automated answering system, press 0 for the operator. Ask for the "Daffodil working group" call. Dr. Martin Westhead Technical Lead, Assured Networks Group, Milpitas, CA| westhead(a)avaya.com |+1 408-577-7810 AVAYA

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Cancelling tomorrow's call
by Westhead, Martin (Martin) 07 Mar '07

07 Mar '07

Hi Folks, Unless anyone has any burning issues I propose to cancel tomorrow's call. Mike can't make it and I am wading through back-to-back meetings this week. As an aside, I am hoping to make it to Manchester but cannot confirm yet. Thanks, Martin Dr. Martin Westhead Technical Lead, Assured Networks Group, Milpitas, CA| westhead(a)avaya.com |+1 408-577-7810 AVAYA

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