I've read the Conversions document and to be honest I had a great deal of trouble trying to work out what was going on. I'd like to see an example of a DFDL schema that models a text stream that contains (say) a complex type with string, integer and decimal children, with DFDL properties used to handle the implicit conversions from text to logical data type. Then I'd like to see the same DFDL schema but with equivalent conversions explicitly declared and used instead of the DFDL properties. Regards, Steve Steve Hanson WebSphere Message Brokers, IBM Hursley, England Internet: smh@uk.ibm.com Phone (+44)/(0) 1962-815848 Mike Beckerle <beckerle@us.ibm. com> To Sent by: Mike Beckerle <beckerle@us.ibm.com> owner-dfdl-wg@ggf cc .org dfdl-wg@ggf.org, owner-dfdl-wg@ggf.org, "Westhead, Martin (Martin)" 28/01/2006 04:17 <westhead@avaya.com> Subject Re: [dfdl-wg] More documents Oh yeah, forgot the attachment. Mike Beckerle STSM, Architect, Scalable Computing IBM Software Group Information Integration Solutions Westborough, MA 01581 voice and FAX 508-599-7148 home/mobile office 508-915-4767 Mike Beckerle/Worcester/IBM@IBMUS Sent by: owner-dfdl-wg@ggf.org To "Westhead, Martin (Martin)" 01/27/2006 07:50 PM <westhead@avaya.com> cc dfdl-wg@ggf.org, owner-dfdl-wg@ggf.org Subject Re: [dfdl-wg] More documents Sorry I missed the call this past week. Here are my comments and some in-line editing on the I actually think the primary reason to push this document forward is NOT extensibility, but because it is needed to clarify the basic semantics of DFDL. That is, it allows us to make very clear exactly what properties in the annotations are guiding the selection of which conversion functions. ...mikeb Mike Beckerle STSM, Architect, Scalable Computing IBM Software Group Information Integration Solutions Westborough, MA 01581 voice and FAX 508-599-7148 home/mobile office 508-915-4767 "Westhead, Martin (Martin)" <westhead@avaya.com> Sent by: owner-dfdl-wg@ggf.org To <dfdl-wg@ggf 01/23/2006 04:58 PM .org> cc Subject [dfdl-wg] More documents These are documents 3 and 4 of a set of 3 :). The documents are: - bundles – a reusable block of DFDL statements - Conversions – a proposal for the semantic details as to how conversions are chosen during the operation of a DFDL parser. These semantics include a description as to how the conversions can be extended. These documents round off the current set of proposals from the extensibility design team. The team has reasonable consensus on these documents, with the (relatively trivial) exception of bundles where there may be some outstanding issues. We believe that with these two documents there is enough material to support the necessary extensibility. However, we have not yet worked through enough examples of round tripping to understand whether that is sufficiently well covered and we are expecting that all the ideas in these documents will require refining by the group as a whole. I would like to discuss these two documents on Wednesday (if possible). Thanks, Martin[attachment "DFDL_Conversions_4.doc" deleted by Mike Beckerle/Worcester/IBM] [attachment "DFDL_Bundles_2.doc" deleted by Mike Beckerle/Worcester/IBM] (See attached file: DFDL_Conversions_4.doc)