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- Path: sparky!uunet!paladin.american.edu!howland.reston.ans.net!sol.ctr.columbia.edu!emory!emory!not-for-mail
- From: obelix.informix.com!johnl@emory.mathcs.emory.edu (Jonathan Leffler)
- Newsgroups: comp.databases.informix
- Subject: I4GL Modifications: Introduction
- Date: 22 Jan 1993 19:48:07 -0500
- Organization: Mailing List Gateway
- Lines: 145
- Sender: walt@mathcs.emory.edu
- Distribution: world
- Message-ID: <1jq4k7INNpah@emory.mathcs.emory.edu>
- Reply-To: obelix.informix.com!johnl@emory.mathcs.emory.edu (Jonathan Leffler)
- NNTP-Posting-Host: emory.mathcs.emory.edu
- X-Informix-List-ID: <list.1811>
-
- Dear Everybody,
-
- *********************************************
- ** SUGGESTED MODIFICATIONS TO INFORMIX-4GL **
- *********************************************
-
- There is a huge document following which is a 3-part shell archive. It
- will have to unpacked in the correct order. This message consists of the
- start of the document -- the preamble before anything really interesting is
- said, but you can decide whether you are interested in reading on.
-
- The highlights of the monster document are:
-
- * Detailed proposal for I4GL picklists
- * Detailed proposal of modifications to INPUT
- * Detailed proposals of modifications to DISPLAY ARRAY
- * Detailed proposals of modifications to INPUT ARRAY
-
- Your feedback is sought because the document has also been fed to the I4GL
- development and marketing teams -- in fact, they are being sent the same
- message as you are seeing.
-
- I'm sorry the result is such a huge document, but I started out to do a
- detailed review of the mail that went flying around comp.databases.informix
- in late November and December 1992, and by the time the changes had been
- collated and expanded into a coherent statement of what was wanted and why
- and an indication of how it could appear in the syntax of the language, it
- came out that big. I haven't seen Paul Mahler's list, but I imagine he has
- got a similar problem to the one I've got.
-
- Thank you in anticipation of your input.
-
- Yours (very) verbosely,
- Jonathan Leffler (johnl@obelix.informix.com)
- #include <disclaimer.h>
- #include <witticisms.h>
- #include <blockgraph.h>
-
- ----------------------------------------------------------------------
-
- *********************************************
- ** SUGGESTED MODIFICATIONS TO INFORMIX-4GL **
- *********************************************
-
- Disclaimer:
- Despite the fact that I work for Informix Software in the UK, this list
- of suggestions does not have any more substance than you care to give
- it by materialising it on your screen, or by placing it on paper. It
- must not be taken as any sort of indication of an official stance by
- Informix Software.
-
- Most of the suggestions in this list have been collated from the recent
- discussions on comp.databases.informix and the mailing list run by Walt
- Hultgen (walt@rmy.emory.edu); a few have been collected from other sources.
- I claim no credit for the basic requirements stated below, though the
- statement below is mainly in my own words. If people desparately want to
- claim the idea, please send me an abbreviated version of this document with
- the ideas to which you lay claim suitably annotated. I will try to include
- your claims in any future version of the document. Bear in mind that more
- than one person may have made the same suggestion -- in fact, that is
- generally the case.
-
- This is a long document. To try and help make it manageable, it is split
- into several sections. The first section is the preamble you're reading
- now. The second section is a brief statement of the features -- one line
- indicating what is required for each feature. The items in this section
- are rated for plausibility with a letter in the set A-F with A good and F
- bad. An A-rated idea generally fits closely with the existing language,
- should be easy to implement, and would be widely used. An F-rated idea
- probably does violence to the spirit of the existing language, would be
- hard to implement, and might not be widely used. This scale is completely
- subjective. The third section expands on each of the ideas in the second
- section. Sometimes it proposes chunk of language syntax; this should be
- taken as a suggestion, and you should consider sending in a revised
- version. Whenever you do this, please bear in mind the requirements for
- backwards compatability -- this will frequently disallow what would
- otherwise be desirable syntax.
-
- Notation: I4GL refers to both Informix-4GL and Informix-4GL RDS. R4GL
- means I4GL-RDS, and C4GL means (compiled) I4GL when a distinction is
- necessary. ID means Informix-4GL Interactive Debuggger, but no suggestions
- have been received concerning that. ISQL means Informix-SQL but does not
- figure prominently in the discussion. The database engines are OnLine and
- SE; all of the features discussed here are applicable regardless of which
- engine the application uses. A 4GL facility is a high-level, possibly
- non-procedural, construct which is typically to do with screen or database
- handling. A 3GL facility is normally analogous to the features found in an
- ordinary programming language such as C, C++ or Ada. CDI refers to the
- newsgroup comp.databases.informix and the mailing list.
-
- Underlying assumption: it is assumed that any program which compiles and
- runs correctly under C4GL should also compile and run correctly under R4GL,
- and vice versa.
-
- WHAT SHOULD YOU DO WITH THIS MESSAGE?
-
- 1: Save it.
-
- 2: Read it. Contemplate it. Contemplate your navel. Let me know if you
- find your navel helpful.
-
- 3: If you disagree with one (or more) of the ideas in this document, send
- me a message with clear identification of the idea to which you are
- referring (they all have a number -- see below), and why you think it is
- all wrong, and what should be done to fix it.
-
- 4: If your favourite idea is languishing in Class D or E or F, then you
- probably haven't made it sufficiently clear what you are asking for.
- Please send revised details to me.
-
- 5: If you think something is missing, put together a proposal along the
- same lines as this document, and send it to me.
-
- 6: Since it is intended to be a discussion document, please also send your
- idea to the comp.databases.informix for general consideration. I will
- be pleased to receive non-broadcast mail, but this is for general
- discussion and as more people consider them, the ideas gradually get
- improved. In this case, the more minds applied, the better.
-
- ----------------------------------------------------------------------
-
- BRIEF STATEMENT OF IMPROVEMENTS
-
- A quick count shows about 120 requests. These have been grouped into
- several subsets, and each request has been given a number of the form
- I4GL-axx where "a" is a letter indicating which subset the request has been
- grouped with, and "xx" is a 2-digit number to identify the request in the
- subset. The number of a request does not reflect its status in any way.
-
- Engines I4GL-Exx
- Tools I4GL-Txx
- 3GL I4GL-Lxx
- SQL I4GL-Sxx
- Reports I4GL-Rxx
- Menus I4GL-Mxx
- PROMPT I4GL-Pxx
- Forms I4GL-Fxx
- Windows I4GL-Wxx
- INPUT I4GL-Ixx
- DISPLAY ARRAY I4GL-Dxx
- INPUT ARRAY I4GL-Axx
- CONSTRUCT I4GL-Cxx
- Picklists I4GL-Kxx
-
- <2200-odd lines of text deleted>
-