- dfdl-wg - lists.ogf.org

Agenda for today's DFDL call
by Steve Hanson 09 Jan '08

09 Jan '08

1) OGF 22 in Cambridge, MA Will we participate and if so who will go 2) Level set on spec drafts Mike circulated a proposal Then issued v030 (vNext in the proposal) Assign owners to spec work items in the vX+n drafts 3) Expression language Forward reference limitation - confirm What data type returned by an expression This reveals underlying question, namely a DFDL property has an XML schema type and a 'resolved' type for use by the parser. Eg: dfdl:length is a string in XML Schema terms, but must resolve to an integer ultimately. 4) Nulls and defaults, and whether we can drop useNullValueForDefault 5) ... Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 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

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Fw: New call in details for Wed call
by Steve Hanson 08 Jan '08

08 Jan '08

Call will take place at usual time. Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 ----- Forwarded by Steve Hanson/UK/IBM on 08/01/2008 17:52 ----- Steve Hanson/UK/IBM 04/01/2008 13:10 To DFDL Working Group cc Subject New call in details for Wed call PARTICIPANT ACCESS INFORMATION: ------------------------------- PARTICIPANT PASSCODE: 8190865 TO JOIN A CONFERENCE 1) You must use a touch-tone phone to participate in an Instant Meeting Conference. 2) Dial the appropriate access number 3) Enter numeric passcode followed by a "#" INSTANT MEETING FEATURES The following Instant Meeting features are available: Press *1 private help menu. Press *3 roll call (private) Press *6 mute or un-mute individual line. Click http://www.mymeetings.com/audioconferencing/globalAccessFAQ.php for information on specific country access dialing. Country Toll Numbers Freephone/Toll Free Number AUSTRIA 43-1-928-9652 BELGIUM 32-2-400-6791 0800-4-9612 DENMARK 45-7014-0237 FRANCE LYON: 33-4-26-69-12-74 080-511-3725 FRANCE MARSEILLE: 33-4-86-06-00-74 080-511-3725 FRANCE PARIS: 33-1-70-70-81-58 080-511-3725 GERMANY 49-69-2222-20363 0800-100-6504 IRELAND 353-1-247-7768 ITALY 39-02-3600-3648 800-985-679 LUXEMBOURG 352-27-000-1312 NETHERLANDS 31-20-713-2741 0800-020-3237 SPAIN 34-91-414-1542 800-099-667 SWEDEN 46-8-566-10-780 SWITZERLAND 41-44-580-3334 0800-000-516 UNITED KINGDOM BIRMINGHAM: 44-121-210-9014 0800-279-9193 UNITED KINGDOM GLASGOW: 44-141-202-3214 0800-279-9193 UNITED KINGDOM LEEDS: 44-113-301-2114 0800-279-9193 UNITED KINGDOM LONDON: 44-20-7019-0808 0800-279-9193 UNITED KINGDOM MANCHESTER: 44-161-601-1414 0800-279-9193 USA 866-505-4412 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. ------------------------------------------------------------------------------ Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 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 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

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Fw: [GRID-ANNOUNCE] Important OGF22 Information
by Steve Hanson 04 Jan '08

04 Jan '08

Suggest we discuss on the next call. Mike - you are best placed to attend - will you be able to? Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 ----- Forwarded by Steve Hanson/UK/IBM on 04/01/2008 15:52 ----- "John Ehrig" <jehrig(a)inventures.com> Sent by: grid-announce-bounces(a)ogf.org 03/01/2008 18:16 To <grid-announce(a)ogf.org> cc Subject [GRID-ANNOUNCE] Important OGF22 Information OGF22, taking place February 25-29 in Cambridge, Massachusetts will feature a wide variety of new and exciting content. Please see the below important information and deadlines for this event. 1. Registration 2. Preliminary Program 3. Hotel Information 4. Student Scholarships 5. Group Chair Scheduling 6. Sponsorships 1. REGISTRATION Advanced registration for OGF22 will close January 11. Register now to save! http://www.ogf.org/OGF22/registration.php 2. PRELIMINARY PROGRAM * Keynote Sessions Charlie Catlett will make the Tuesday (2/26) morning keynote address. Charlie founded the Global Grid Forum (predecessor to OGF) and is currently the CIO of Argonne National Laboratory, Director of Argonne's Computing and Information Systems Division, and a Senior Fellow at the Argonne/University of Chicago Computation Institute. As CIO of Argonne, Charlie will bring unique perspectives on operating a world-class data center while providing leading-edge technology solutions to computational scientists. Other keynote speakers are in being lined up. Watch for further announcements as their availability is confirmed. * OGF Chartered Groups And BoFs - Monday, February 25 through Friday, February 29 Activities are scheduled throughout the entire week where many of OGF's chartered groups will meet to make further progress on their work. In addition, the latest hot topic in distributed computing - "Cloud Systems" and how it may or may not impact Grids will be tackled in a special BoF session. * OGF Specification Adoption Track and Demonstration Session - Monday, February 25 and Tuesday, February 26 Many OGF working groups have recently demonstrated interoperability of their specifications. These significant accomplishments illustrate how much of the work of OGF is shifting from developing specifications to seeing specifications being used and adopted into products. This multi-session track will feature contributions from developers and users showcasing their work implementing OGF specifications. In addition, live demonstrations will take place during the welcome reception on Monday evening. * Workshops OGF22 will feature a number of interesting workshops that will address a variety of important topics in Grid: a) Enterprise Adoption Workshop - Tuesday, February 26 This full day workshop - "Enabling the Next Generation IT Infrastructure" will focus on putting Grid in the context of the distributed computing infrastructure, including virtualization, service-oriented architecture, web services and next-generation networks. Emphasis will be on solving business problems and meeting business needs, with a focus on Applications On-boarding and Managing Infrastructure. Presentations and case studies are expected from representatives from the 451 Group, VMware, Intel, SAS, Platform Computing, DataSynapse and others that will show a variety of areas that can be addressed by Grid in practical and achievable ways. b) Financial Services Workshop - Wednesday, February 27 The financial services industry is one of the early adopters, and successful users, of Grid technology. As the technology matures, new (and old) issues emerge like expanding grids to support transactional workloads, data management and movement, and putting policies in place for charging and tracking usage. Presentations and case studies that describe the emerging issues the financial services industry is now facing in Grid will be featured in this half day workshop. c) Pharma/Life Sciences Workshop - Wednesday, February 27 The pharmaceutical industry and life sciences in general have begun to depend on in silico experiments as critical elements in the path to discovery. This has enabled exploration that is only limited by their ability to access sufficient computing resources and to store and manage the resultant mountain of data. Presentations and case studies from those that have turned to Grid-based solutions to meet these needs will be featured in this half day workshop. d) Data Management Workshop - Thursday, February 28 This full day workshop, co-hosted by OGF and the Storage Networking Industry Association (SNIA), will address data management challenges with a focus on file system and data movement. We will also explore potential synergies and common areas between OGF and SNIA. * Other Community Content - Monday, February 25 through Thursday, February 28 Sessions from the greater Grid community covering numerous topics and a variety of subjects will also be presented. These include workshops, tutorials, BoFs and presentations on marketing, education in emerging/developing countries, Grid Identity Providers, GridWay, and other topics. 3. HOTEL INFORMATION OGF has secured a block of sleeping rooms at the Hyatt Regency Cambridge (meeting location) at a special rate of $129 for single or double occupancy. Reservations must be made on or before February 8, 2008, to receive the discounted rate. Reservations can be made by calling the hotel directly (be sure to reference 'OGF22') or online via http://ogf.org/OGF22/lodging.php. 4. STUDENT SCHOLARSHIPS A limited number of student scholarships are available for qualifying students. Hosted by OGF and CoreGRID, the OGF22 student scholarship program provides a unique opportunity for students to participate in OGF program sessions and group sessions as well as network with distinguished community participants and leaders. Application details and eligibility requirements can be found at http://ogf.org/OGF22/students.php. 5. GROUP CHAIR SCHEDULING OGF Group Chair session scheduling will remain open until January 11. Session scheduling and document details along with a link to the online session request site can be accessed via http://ogf.org/OGF22/chairinfo.php. 6. SPONSORSHIP OPPORTUNITIES Sponsorship opportunities for OGF22 include Display Tables, Welcome Reception, Chair Appreciation Night, OGF Co-branded Promotional Item, Wireless, Lunches and Breaks, and Badge Lanyard. By sponsoring OGF22 your organization will gain greater visibility and recognition as a Grid thought leader in our global community. This will be our only OGF event in the USA for all of 2008, so please strongly consider sponsoring if you are interested in reaching this audience. The sponsorship prospectus provides additional information http://www.ogf.org/OGF22/sponsor.php See you in Cambridge! Register today http://www.ogf.org/OGF22/registration.php Regards, John Ehrig Open Grid Forum Enterprise and Marketing Program Manager 925 275-6677 www.ogf.org -- grid-announce mailing list grid-announce(a)ogf.org http://www.ogf.org/mailman/listinfo/grid-announce 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

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New call in details for Wed call
by Steve Hanson 04 Jan '08

04 Jan '08

PARTICIPANT ACCESS INFORMATION: ------------------------------- PARTICIPANT PASSCODE: 8190865 TO JOIN A CONFERENCE 1) You must use a touch-tone phone to participate in an Instant Meeting Conference. 2) Dial the appropriate access number 3) Enter numeric passcode followed by a "#" INSTANT MEETING FEATURES The following Instant Meeting features are available: Press *1 private help menu. Press *3 roll call (private) Press *6 mute or un-mute individual line. Click http://www.mymeetings.com/audioconferencing/globalAccessFAQ.php for information on specific country access dialing. Country Toll Numbers Freephone/Toll Free Number AUSTRIA 43-1-928-9652 BELGIUM 32-2-400-6791 0800-4-9612 DENMARK 45-7014-0237 FRANCE LYON: 33-4-26-69-12-74 080-511-3725 FRANCE MARSEILLE: 33-4-86-06-00-74 080-511-3725 FRANCE PARIS: 33-1-70-70-81-58 080-511-3725 GERMANY 49-69-2222-20363 0800-100-6504 IRELAND 353-1-247-7768 ITALY 39-02-3600-3648 800-985-679 LUXEMBOURG 352-27-000-1312 NETHERLANDS 31-20-713-2741 0800-020-3237 SPAIN 34-91-414-1542 800-099-667 SWEDEN 46-8-566-10-780 SWITZERLAND 41-44-580-3334 0800-000-516 UNITED KINGDOM BIRMINGHAM: 44-121-210-9014 0800-279-9193 UNITED KINGDOM GLASGOW: 44-141-202-3214 0800-279-9193 UNITED KINGDOM LEEDS: 44-113-301-2114 0800-279-9193 UNITED KINGDOM LONDON: 44-20-7019-0808 0800-279-9193 UNITED KINGDOM MANCHESTER: 44-161-601-1414 0800-279-9193 USA 866-505-4412 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. ------------------------------------------------------------------------------ Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 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

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Today's call cancelled
by Steve Hanson 02 Jan '08

02 Jan '08

The existing conference call number has expired and I'm in the process of setting up a replacement. Regards, Steve Steve Hanson WebSphere Message Brokers Hursley, UK Internet: smh(a)uk.ibm.com Phone (+44)/(0) 1962-815848 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

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DFDL - Affiliation changing for Mike Beckerle
by Mike Beckerle 12 Dec '07

12 Dec '07

DFDLers, I am leaving IBM to join a smaller company. The good news is that I will continue to be involved in DFDL-related work in my new capacity. I will forward contact info for my new position soon. In the mean time I can be reached at the address here: (encoded to avoid spam address scrapers) michael dot beckerle at alum dot mit dot edu ...mikeb

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Can't make call today. Sorry
by Mike Beckerle 12 Dec '07

12 Dec '07

Sorry everyone. I cannot make the call today. ...mikeb

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DFDL infoset and wildcards
by Mike Beckerle 07 Dec '07

07 Dec '07

Our Infoset section of the spec is silent about wildcards. Do we need an infoset information item that corresponds to things that match a wildcard? Or can wildcards just be element info items that lack [namespace] [dataType] and where the [schema] refers to the schema component that defines the wildcard, not to an element declaration. Comments? Mike Beckerle STSM, Architect, Scalable Computing IBM Software Group Information Platform and Solutions Westborough, MA 01581 direct: voice and FAX 508-599-7148 assistant: Pam Riordan priordan(a)us.ibm.com 508-599-7046

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OGF DFDL WG minutes 2007-12-05 call
by Mike Beckerle 06 Dec '07

06 Dec '07

OGF DFDL WG minutes 2007-12-05 call Suman Kalia, Simon Parker, Alan Powell, Mike Beckerle (who else? - was someone else on also) We discussed Output issues in the DFDL expression language: E.g.., an outputValueCalc for a field in the header of a data stream may contain information that requires you to know the rep, or length of the rep, of the whole data item. We concluded that this kind of thing can't be ruled out. Some formats just require buffering and are not streamable; however, implementations can vary on just how large a data item they're able to cope with here. Expression language section will include a subsection highlighting this issue and that implementations can vary here. Alan will update his expression language proposal and include this. Also suggested was a path length-from-to function that takes 2 path expressions and gives you the size of the represntation between them. (start of first, to last bit before start of 2nd). (I don't think we discussed a clear use case motivating this, but there may be one. We did discuss applications trying to fit data into limited size boxes, but the use case is not clear. Also note that all representation lengths are subject to change due to different starting alignments.) Nillable and Default: We also discussed the interaction of nillable and having a default. The sense of the group on the call is that we can restrict these so that if something is nillable it cannot also have a default value, and that the behavior of DFDL on output for a required element that is nillable but not in the logical data, is to create a null value. Everyone agreed that there is no need for a property useNullValueForDefault because this should always be the behavior. Mike will forward a proposal. ...mikeb Mike Beckerle STSM, Architect, Scalable Computing IBM Software Group Information Platform and Solutions Westborough, MA 01581 direct: voice and FAX 508-599-7148 assistant: Pam Riordan priordan(a)us.ibm.com 508-599-7046

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OGF DFDL - useNullValueForDefault
by Mike Beckerle 03 Dec '07

03 Dec '07

I'm trying to simplify something in the nulls/defaults space. There's this property proposed: useNullValueForDefault. This is a boolean. I'm trying to understand what this is for. On input, when the element is required but no content is found, and you therefore want to create a default value, you would look, see that the element is nillable, see that useNullValueForDefault is true, and set the logical value of that element to null. On output when no logical value is provided but the element is required, you therefore want to create a default value, so you look and see that the element is nillable and see that useNullValueForDefault is true and so you provide the logical value null as the value. Then you output as if the logical value was null in the first place, so you would output the first of the dfdl:nullValues list as the representation. These two are not symmetric. I understand wanting empty content to cause null as the logical value of a nillable element. Symmetry argues that one wants in this case for the output side to output empty content as the representation of null logical value. The way I would express this is to provide a means for the list of dfdl:nullValues to be able to contain the empty string as its first member of the list. E.g., some syntax like: dfdl:nullValues=" '' 'null' 'NULL' '\ ' " Once you have this, there is no need for useNullValueForDefault. It's functionality is subsumed by allowing nullValues to contain empty-string as a null representation. This leaves the case where an element is both nullable and has a non-null default value. Is this case important or can we just say that an element is either nullable or has default values, but not both. We already have some constraints on this stuff in that we don't allow nullable complex types, only simple. I believe allowing all combinations of nullability with default values is probably overkill. Comments? I understand wanting a missing Mike Beckerle STSM, Architect, Scalable Computing IBM Software Group Information Platform and Solutions Westborough, MA 01581 direct: voice and FAX 508-599-7148 assistant: Pam Riordan priordan(a)us.ibm.com 508-599-7046

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