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Archive-name: object-faq/part10
Last-Modified: 04/02/96 Version: 1.0.9 See reader questions & answers on this topic! - Help others by sharing your knowledge
The major new features are:
- Faster object store.
- Support for replicated objects.
- Memory resident object store.
- Support for ANSAware (not available via ftp)
Arjuna supports nested atomic actions (atomic transactions) for
controlling operations on objects (instances of C++ classes), which can
potentially be persistent. Arjuna has been implemented in C++ to run on
stock platforms (Unix on SUNs, HPs etc). The software available
includes a C++ stub generator which hides much of the details of
client-server based programming, plus a system programmer's manual
containing details of how to install Arjuna and use it to build
fault-tolerant distributed applications. The software and the manual
can be obtained by anonymous ftp: arjuna.ncl.ac.uk (128.240.150.1)
Several enhancements and ports on various distributed
computing platforms are in progress. We would be pleased to hear from
researchers and teachers interested in using Arjuna. The programmer's
manual contains the e-mail addresses for sending your comments and
problem reports.
ANSAware version of Arjuna
The ANSAware version of Arjuna is available from:
Architecture Projects Management Limited
Poseidon House
Castle Park Phone +44 223 323010
Cambridge Fax +44 223 359779
CB3 0RD Internet apm@ansa.co.uk
United Kingdom UUCP ...uknet!ansa!apm
Arjuna Mailing List
To enable us to help people using Arjuna, an electronic mail list has
been setup. You can join the Arjuna mailing list by sending an e-mail
message to "mailbase@mailbase.ac.uk" containing:
join arjuna <Your Name>
For example : join arjuna John Smith
Mail messages can then be sent to "arjuna@mailbase.ac.uk", for
distribution.
Arjuna Project Team
The Department of Computing Science,
The University,
Newcastle upon Tyne.
NE1 7RU, UK.
Fax: +44 91 222 8232
e-mail: arjuna@newcastle.ac.uk
anonymous ftp: arjuna.ncl.ac.uk (128.240.150.1)
EMAIL = arjuna@newcastle.ac.uk
POST = Computing Laboratory, The University, Newcastle upon Tyne, UK NE1 7RU
VOICE = +44 91 222 8067 FAX = +44-91-222-8232
Subject: Arjuna papers announcement
Date: Tue, 8 Jun 1993 16:47:02 GMT
This is to announce the availability of most Arjuna related papers and
theses via anonymous ftp from arjuna.ncl.ac.uk. These papers are
available in both US Letter and European A4 standards in postscript and
should now print on systems. Any problems in printing should be directed to
arjuna@newcastle.ac.uk.
Since there are too many papers to describe in one posting there is an index
available in /pub/Arjuna/Index which contains the abstracts from all of
the papers/theses and their locations within the ftp hierarchy.
>3 BOS (prototyping)
What: BOS
From: Sean.Levy@cs.cmu.edu
Date: 23 Apr 92 18:07:32 GMT
[For readers of comp.object and self-interest, BOS is a prototype-based
object system that I have, er, prototyped in Tcl. It is available via anon
FTP to monch.edrc.cmu.edu under /usr0/snl/archive/bos-1.2.tar.Z (you have to
cd to /usr0/snl/archive first and then get the file, due to CMU security hacks
in ftpd). I thought that this would be of interest to comp.object and
self-interest, so I'm cross-posting/mailing --S]
Note: I play very fast and loose with the terminology of OOP to get my
point across. I apologize if I offend any sensibilities, and will clarify what
I say if it is obfuscated by my use of terms.
>4 G++ for DOS (Many sites)
:From: DJ Delorie <dj@ctron.com>
:Newsgroups: gnu.announce,gnu.misc.discuss
: DJGPP 1.10 is now available!
:
:
: --- DJGPP - G++ for MSDOS/386 ---
:djgpp is normally uploaded to:
: omnigate.clarkson.edu 128.153.4.2 pub/msdos/djgpp
: math.utexas.edu 128.83.133.215 pub/msdos/djgpp(*)
: ftp.uni-koeln.de 134.95.128.208
: msdos/gnuprogs/djgpp (*)
: ftp.eb.ele.tue.nl 131.155.40.15
: pub/pc/gnu/gcc-pl* & gcc-newst
: wowbagger.pc-labor.uni-bremen.de 134.102.228.9 pub/msdos/djgpp
: src.doc.ic.ac.uk 146.169.2.1 ibmpc/djgpp
: ftp.mcc.ac.uk 130.88.200.7 pub/djgpp
: UK.AC.MCC.FTPJ (JANET) user<guest> <PUB>djgpp
:(*) Please do not access during working hours (7am - 6pm their local time)
>5 cooC (Concurrent, OO C ext.)
From: maeda@isl.rdc.toshiba.co.jp (Ken-ichi Maeda)
Subject: cooC FTP release (2nd posting)
Date: 2 Jul 93 15:13:11
Organization: TOSHIBA R & D Center, Kawasaki, JAPAN.
We are pleased to announce the release of new object oriented
language based on C. The language has support for concurrent object
execution with synchronous or asynchronous message pssaing and wait when
necessary reply handling. The language known as cooC (concurrent object
oriented C) is available by anonymous FTP for research purposes.
FTP Site: tsbgw.isl.rdc.toshiba.co.jp (133.196.1.11)
File: pub/toshiba/cooc-beta.1.1.tar.Z
The released version of cooC employs SunOS(TM) LWP (light weight
process), to obtain concurrent execution. The release consists of the
language translator (cooC->C), a runtime library (SunOS(TM)), a
concurrent object based debbuger, an example groupware application
(SharedDraw) and some technical papers.
BECAUSE THE SYSTEM IS LICENSED FREE OF CHARGE, THERE IS NO WARRANTY FOR
ANY PART OF THE SYSTEM.
TOSHIBA Corporation while making cooC free for research, retains
copyright.
For further detail, please refer to COPYRIGHT notice in the
package.
Any questions and/or comments are welcome at the following
e-mail address.
cooc@isl.rdc.toshiba.co.jp
--
--------------------------------------------------------------------
Ken-ichi Maeda <maeda@isl.rdc.toshiba.co.jp>
Communication and Information Systems Research Lab. II
TOSHIBA Research & Development Center
1, Komukai Toshiba-cho, Saiwai-ku, Kawasaki 210, JAPAN
TEL. (+81- or 0)44-549-2237 FAX. (+81- or 0)44-520-1841
--------------------------------------------------------------------
>6 FMPL (prototyping)
What: Interpreter for FMPL of Accardi, Release 1
From: blojo@xcf.berkeley.edu (Jon Blow)
Date: 2 Jun 92 08:42:26 GMT
An interpreter for FMPL of Accardi, Release 1 is now available for ftp at
xcf.berkeley.edu:src/local/fmpl/.
*FMPL is a prototype-based object-oriented programming language.
*FMPL possesses lambda-calculus based constructs.
*FMPL is an event-driven language; the events it responds to are mainly
based on the behavior of input/output streams, not only within the unix domain
but across the internet as well.
*FMPL supports "pretty"-printing of internally-represented code back into
readable form.
*FMPL is an experimental language developed at the Experimental Computing
Facility of the University of California, Berkeley. This release is something
of a beta test since the language has not been widely used outside Berkeley.
It is hoped that this release will draw useful comments and suggestions from
the world at large that will help in improving future versions of FMPL.
>7 MAX (visual OO)
From: fingerhu@ircam.fr (Michel Fingerhut)
Subject: IRCAM DSP software for DEC/ALPHA and DEC/MIPS
Organization: Inst. de Recherche et Coordination Acoustique/Musique, Paris
Date: Fri, 13 Aug 93 11:25:23 GMT
ftp://ftp.ircam.fr/pub/IRCAM/ contains some of the IRCAM-developed
software packages (in demo version; see further down for availability
of the fully functional versions), including runnable binaries for
both the DEC/ALPHA (osf1) and DEC/MIPS (ultrix) architectures, and soon
available on other platforms (SGI and Macintosh).
MAX
MAX is a visual, object-oriented, programming language, initially
designed for interactive musical performance, but which is suitable for
digital signal processing as well as real-time control. It allows
interconnecting of oscillators and filters, building custom controller
modules and simulation units all from a core collection of signal
processing objects.
First developed by Miller Puckette at IRCAM in late 1986 to control
the IRCAM 4X, it was later implemented on the Apple Macintosh as a
graphical programming environment for MIDI applications. This version
has been extended by the Opcode company in Palo Alto, CA (USA), and is
available through them.
The Alpha version (and its demo-only subset) is based on the NeXT
version, where it is used to control the IRCAM-designed ISPW board.
This card, based on two Intel i860 microprocessors, handles
numerically-intensive real-time operations.
To date, it has been extensively used in live performance of
full-length musical compositions (see some references in the MAX/doc
directory), as well as in scientific and experimental applications
requiring real-time control.
SVP
SVP (``Super Vocodeur de Phase'') is a signal processing tool which was
designed and developed at IRCAM by Gilles Poirot and Philippe
Depalle. It is a full system for the analysis and synthesis of sound,
whose core is a phase vocoder, and which comprises several modules for
analysis (FFT, LPC..), filtering (band modes, surface modes...), time-
scaling, mixing, spectral combination, cross-synthesis and
amplification, which can be combined in multiple ways.
UDI
UDI is a library of C routines which provides a coherent software
approach for developing and maintaining digital signal processing
algorithms on stand-alone workstations or on host/array processor
configuration. Initially designed for sound signal analysis and
synthesis, it can be used by any application which does vector math
calculation.
It provides functions ranging from elementary vector and matrix
operations to more specific DSP operations, such as, but not limited
to, FFT, least-square, linear prediction coding, discrete cepstrum and
pitch detection.
UDI was actually used in implementing SVP.
HOW TO RETRIEVE
The following example contains underlined text. If it does not print
nicely, use your favorite editor in order to remove all occurrences of
"^H_" (control-H followed by underscore).
Connect via ftp to ftp.ircam.fr. Engage into the following dialog (the
underlined text is the reply you should provide
220 ftp FTP server (Version 6.17 Thu Mar 11 08:30:51 MET 1993) ready.
Name (ftp:host): f _t _p _ (or: a _n _o _n _y _m _o _u _s _)
Passwd: l _o _g _i _n _@ _y _o _u _r _m _a _c _h _i _n _e _ (see NOTE further down)
230-...
230-(informational messages, please read!)
230-...
ftp> c _d _ _p _u _b _/ _I _R _C _A _M _/ _p _r _o _g _r _a _m _s _
250 CWD command successful.
ftp> g _e _t _ _R _E _A _D _M _E _
200 PORT command successful.
150 Opening ASCII mode data connection for README (nnn bytes).
226 Transfer complete.
local: README remote: README
nnn bytes received in mmm seconds (xxx Kbytes/s)
ftp> b _i _n _
200 Type set to I.
ftp> g _e _t _ _s _v _p _. _t _a _r _. _g _z _ (or u _d _i _. _t _a _r _. _g _z _ or m _a _x _. _t _a _r _. _g _z _)
...
ftp> q _u _i _t _
NOTE
The ftp server requires you to give as password something of the form
l _o _g _i _n _@ _h _o _s _t _
where l _o _g _i _n _ is your login name (or account name, or user information)
and h _o _s _t _ is the fully-qualified name of the machine you are currently calling
from, which is not necessarily the one on which you get your mail. If you
mistype it, the ftp server will advise you with an informative error message.
AVAILABILITY
For information on availability of these and other IRCAM tools with
full functionality and documentation, and/or licensing of source code,
as well as IRCAM publications (technical/scientific reports) please contact
(in french or english, preferably):
Mr. Vincent Puig
Directeur de la Valorisation
IRCAM
31, rue Saint-Merri
F-75004 Paris, France
email: puig@ircam.fr
FAX: +33 1 42 77 29 47
Additional info can be found in the README file in the above directory.
REPORTING PROBLEMS AND GETTING HELP
... in retrieving the software and/or in running it: please send email to
manager@ircam.fr
>8 O'small (OO lang for teaching)
From: hense@sol.cs.uni-sb.de (Andreas Hense)
Subject: *** NEW O'small compiler available by ftp !!! ***
Date: 25 Jun 1993 13:54:35 GMT
Organization: Universitaet des Saarlandes,Rechenzentrum
O'small - THE object-oriented language for teaching
---------------------------------------------------
(Announcement of a new compiler)
*** An object-oriented language for teaching?
Depending on which aspects of object-orientation you want to convey you
may choose your teaching language. If you want to teach the aspect of
software reuse and nice graphical user interfaces, you should choose
Smalltalk. If you want to show students how to program in a best
selling language you should choose C++.
*** In which case should I choose O'small?
You should consider O'small if you believe that computer languages
should have a GOOD FORMAL SEMANTICS. Everyone will agree that a
language needs a formal semantics. Otherwise, your program will yield
different results on different implementations. A good formal
semantics does not only serve the purpose of precisely defining what
the results of your programs are, it also gives insights about the
nature of the language.
You should consider O'small if you do not want to waste time on
unnecessary details. O'small is CONCISE. Its syntax and semantics
takes no more than one page (if you choose the right font). Its syntax
is similar to more traditional languages. O'small has been used in a
lecture showing the differences between wrapper semantics
(denotational) and method lookup semantics (operational).
O'small is FREE! Up to now, there has only been an O'small interpreter
written in Miranda [Hen91b]. This interpreter is directly based on the
denotational semantics of O'small [Hen91d]. The interpreter itself is
available by ftp. However, you need Miranda in order to run it. Now,
there is a NEW IMPLEMENTATION of O'small based entirely on EASILY
AVAILABLE SOFTWARE. This software is not free but it does not cost
anything. The new implementation is based on an abstract machine [Boe93].
You can MODIFY the language and have your students make experiments
with it. The source code of the abstract machine and the
specifications for the parser and scanner generators are available.
Using these generators you can make experiments for your own research
in statical analysis of object-oriented languages.
*** I would like to TRY O'small
You get the implementation by anonymous internet ftp.
The following table gives the ftp connection information.
Host: Net Address: Directory:
-------------------------------------------------------------
cs.uni-sb.de 134.96.7.254 /pub/osmall/machine
The directory /pub/osmall/machine contains the files
README
ANNOUNCE this file
HowToGetML
oma.1.00.tar.Z compressed tar-file
***************************************************************************
NOTE: Ftp should be put into binary mode before transferring the compressed
tar file.
***************************************************************************
Here is a sample dialog:
ftp
ftp> open cs.uni-sb.de
Name: anonymous
Password: <your name>
ftp> binary
ftp> cd /pub/osmall/machine
ftp> get README
ftp> get ANNOUNCE
( ftp> get HowToGetML )
ftp> get oma.1.00.tar.Z
ftp> close
ftp> quit
If you have a Sun 4 or a SPARC you can use the existing executable files.
Otherwise, you need 'sml-yacc', 'sml-lex' and 'sml-noshare'. Read
'HowToGetML' to obtain them.
Instructions on using the machine are contained in the file README.
References
[Boe93] Christoph Boeschen. Christmas - An abstract machine for
O'small. Master's thesis, Universit"at des Saarlandes,
Fachbereich 14, June 1993.
[Hen91b] Andreas V. Hense. An O'small interpreter based on denotational
semantics. Technical Report A 07/91, Universit"at des Saarlandes,
Fachbereich 14, November 1991.
[Hen91c] Andreas V. Hense. Type inference for O'small. Technical Report A
06/91, Universit"at des Saarlandes, Fachbereich 14, October 1991.
[Hen91d] Andreas V. Hense. Wrapper semantics of an object-oriented pro-
gramming language with state. In T. Ito and A. R. Meyer, editors,
Theoretical Aspects of Computer Software, volume 526 of Lecture No-
tes in Computer Science, pages 548-568. Springer-Verlag, September
1991.
[Hen93] Andreas V. Hense. Denotational semantics of an object-oriented
programming language with explicit wrappers. Formal Aspects of
Computing, 5(3), 1993. to appear.
[HS92] Andreas V. Hense and Gert Smolka. A verification of extensible
record types. In Zhongzhi Shi, editor, Proceedings of the IFIP
TC12/WG12.3 International Workshop on Automated Reasoning,
pages 137-164, Beijing, P.R. China, 13-16 July 1992. Internatio-
nal Federation for Information Processing, Elsevier, North-Holland,
Excerpta Medica.
[HS93] Andreas V. Hense and Gert Smolka. Principal types for object-
oriented languages. Technical Report A 02/93, Universit"at des Saar-
landes, Fachbereich 14, June 1993.
>9 OBJ3 (OO lang)
What: Release 2.0 of OBJ3 (needed for FOOPS and OOZE, concurrent OOP)
Date: Thu, 4 Jun 92 15:07:26 BST
From: Paulo.Borba@prg.oxford.ac.uk
OBJ is available from SRI, see the message below; prototypes implementations of
FOOPS (without the concurrent extension) and OOZE are due to the end of the
year, but for both you also need OBJ.
Unfortunately, I don't have any document about the FOOPS extension now, but
probably by the end of the year. I will send it to you as soon as possible.
What: Release 2.0 of OBJ3 is now available
From: winkler@csl.sri.com (Timothy Winkler)
Date: 6 Apr 92 08:35:40 GMT
Release 2.0 of OBJ3 is now available!
Improvements in this version include some language extensions and additional
theorem proving features. In addition, an effort has been made to speed up
the implementation; rewriting is often twice as fast as in the original
implementation. We are including the AKCL patches from the University of
Texas at Austin in the distribution, which are necessary for maintaining the
portability of OBJ3 and also improve its efficiency. In addition, we are
distributing a SPARC version of OBJ3.
OBJ3 has pattern matching modulo associativity, commutativity, and identity.
New: the system automatically computes conditions for rules involving matching
modulo identity that are used to prevent obvious non-termination problems.
Also new to this version of OBJ3 is a facility for controlled rewriting. This
provides substantially increased support for the use of the system for
equational theorem proving.
To receive the OBJ3 distribution tape or an OBJ3 license, send a request
to:
Judith Burgess (OBJ3)
Computer Science Laboratory
SRI International
333 Ravenswood Ave.
Menlo Park, CA 94025-3493, USA
Telephone: (415) 859-5924
Fax: (415) 859-2844
email: obj3dist@csl.sri.com
Be sure to give us your postal mailing address. Then we will send you the
OBJ3 Information Form, and License Agreement, with instructions on how to
fill them out. (A KCL license form will also be included.) When you return
them to us, appropriately filled out and signed, we will send you the tape,
somedocumentation, and, in case you are requesting a tape, an invoice for
$150.00 plus any required taxes.
If you already have an OBJ3 license, then you don't need to get a new license,
but, if you are requesting a tape from SRI, you are asked to pay the above
distribution fee.
It is also possible to get a license for OBJ3 at no charge from SRI and then
get the OBJ3 distribution itself from some third party also having a license.
Jose Meseguer, Timothy Winkler, and Patrick Lincoln
Computer Science Laboratory
SRI International
333 Ravenswood Avenue
Menlo Park, California 94025, USA
Joseph Goguen
Programming Research Group
Computing Laboratory
Oxford University
11 Keble Road
Oxford OX1 3QD, United Kingdom
>10 OBST (lang, perst, OODB)
See entry under Appendix B.
>11 OOT (OO Turing demo)
What: OOT
From: holt@turing.toronto.edu (Ric Holt)
Date: 26 Apr 93 20:14:43 GMT
OBJECT ORIENTED TURING: DEMO AVAILABLE VIA FTP
OOT (Object Oriented Turing) is a programming language that has been
developed at the University of Toronto. An OOT demo, which includes the
fully implemented language, is available for Sun/4's running X windows.
See below for instructions to copy the demo to your site.
OOT supports the standard OOPL features of information hiding, classes,
polymorphism and generics, as well as the usual features in C and Pascal
style languages. It also supports concurrency, exception handling
and system programming (pointer arithmetic, bit manipulation, etc).
The OOT environment is designed for teaching Computer Science.
It is being used in introductory programming courses, courses
on OO concepts, compiler courses, OS courses, etc.
The OOT environment is fully integrated, with multi-window editing, turbo
speed compiler, integrated color graphics, GUI user interface, implicit MAKE,
on-line manual, integrated demos, etc. The system includes an experimental
CASE tool with an interface browser and a visual system browser.
>12 Sather (simple Eiffel)
What: SATHER
Sather is under development at the International Computer Science Institute.
Sather has clean and simple syntax, parameterized classes, object-oriented
dispatch, multiple inheritance, strong typing, and garbage collection. The
compiler generates efficient and portable C code which is easily integrated
with existing code.
The initial beta test release of the language was in May, 1991. The compiler,
debugger, Emacs development environment, documentation, and library classes
are available by anonymous ftp from "icsi-ftp.berkeley.edu".
"sather@icsi.berkeley.edu" is a mailing list for discussing aspects of Sather
and "sather-admin@icsi.berkeley.edu" should be used for bug reports and
requests to be added or deleted from the mailing list.
Sather is based on Eiffel but is more concerned with efficiency and less with
some of the formal and theoretical issues addressed by Eiffel. The language is
much smaller than the current Eiffel, it eliminates over 40 keywords and
simplifies the syntax and inheritance rules.
Like Eiffel, Sather code is compiled into portable C and efficiently links
with existing C code. The Sather compiler is written in Sather and has been
operational for almost a year, though it is still being improved. Preliminary
benchmarks show a performance improvement over Eiffel of between a factor of 4
and 50 on basic dispatching and function calls. On the benchmarks used at
Stanford to test Self (including 8 queens, towers of hanoi, bubblesort, etc),
Sather is even slightly faster than C++.
The Sather compiler and libraries are publicly available under a very
unrestrictive license aimed at encouraging contribution to the public library
without precluding the use of Sather for proprietary projects. The goal is to
establish a repository for efficient, reusable, well written, publicly
available, classes for most of the important algorithms in computer science.
There are currently about 120 classes in the library. The libraries are
growing quickly and will collect together classes from many authors under the
same unrestrictive license.
A GNU emacs development environment for Sather is available. A debugger based
on gdb from the Free Software Foundation is also available. A parallel version
of Sather for shared memory machines called "Psather" is also under
development.
From the Sather FAQ, August 16, 1993 (See Section 1.24):
Q 1: What is Sather?
~~~~~~~~~~~~~~
Sather is an object oriented language which aims to be simple,
efficient, interactive, safe, and non-proprietary. It aims to meet the
needs of modern research groups and to foster the development of a
large, freely available, high-quality library of efficient
well-written classes for a wide variety of computational tasks. It was
originally based on Eiffel but now incorporates ideas and approaches
from several languages. One way of placing it in the "space of
languages" is to say that it attempts to be as efficient as C, C++, or
Fortran, as elegant and safe as Eiffel or CLU, and to support
interactive programming and higher-order functions as well as Common
Lisp, Scheme, or Smalltalk.
Sather has garbage collection, statically-checked strong typing,
multiple inheritance, separate implementation and type inheritance,
parameterized classes, dynamic dispatch, iteration abstraction,
higher-order routines and iters, exception handling, assertions,
preconditions, postconditions, and class invariants. The development
environment integrates an interpreter, a debugger, and a
compiler. Sather code can be compiled into C code and can efficiently
link with C object files.
>13 Self
From: hoelzle@Xenon.Stanford.EDU (Urs Hoelzle)
Subject: Announcing Self 3.0
Date: 28 Dec 93 22:19:34 GMT
ANNOUNCING Self 3.0
The Self Group at Sun Microsystems Laboratories, Inc., and Stanford
University is pleased to announce Release 3.0 of the experimental
object-oriented programming language Self.
This release provides simple installation, and starts up with an
interactive, animated tutorial.
Designed for expressive power and malleability, Self combines a pure,
prototype-based object model with uniform access to state and
behavior. Unlike other languages, Self allows objects to inherit state
and to change their patterns of inheritance dynamically. Self's
customizing compiler can generate very efficient code compared to
other dynamically-typed object-oriented languages.
The latest release is more mature than the earlier releases: more
Self code has been written, debugging is easier, multiprocessing is more
robust, and more has been added to the experimental graphical user interface
which can now be used to develop code. There is now a mechanism
(still under development) for saving objects in modules, and a
source-level profiler.
The Self system is the result of an ongoing research project and
therefore is an experimental system. We believe, however, that the
system is stable enough to be used by a larger community, giving
people outside of the project a chance to explore Self.
2 This Release
This release is available free of charge and can be obtained via
anonymous ftp from Self.stanford.edu. Also available for ftp are a
number of published papers about Self.
There is a mail group for those interested in random ramblings about Self,
Self-interest@Self.stanford.edu. Send mail to self-request@self.stanford.edu
to be added to it (please do not send such requests to the mailing list
itself!).
2.1 Implementation Status
Self currently runs on SPARC-based Sun workstations running SunOS 4.1.x
or Solaris 2.3. The Sun-3 implementation is no longer provided.
2.2 Major Changes
Below is a list of changes and enhancements that have been made since
the last release (2.0.1). Only the major changes are included.
o The graphical browser has been extended to include editing
capabilities. All programming tasks may now be performed through the
graphical user interface (the "ui"). Type-ins allow for expression
evaluation, menus support slot editing, and methods can be entered and
edited. If you are familiar with a previous version of the Self
system, Section 14.1 of the manual entitled "How to Use Self 3.0"
contains a quick introduction to the graphical user interface. The
impatient might want to read that first.
o A mechanism - the transporter - has been added to allow arbitrary
object graphs to be saved into files as Self source. The system has
been completely modularized to use the transporter; every item of
source now resides in a transporter-generated
module. Transport-generated files have the suffix .sm to distinguish
them from "handwritten" files (.Self), though this may change as we
move away from handwritten source. The transporter is usable but rough,
we are still working on it.
o Every slot or object may now have an annotation describing the
purpose of the slot. In the current system, annotations are strings
used to categorize slots. We no longer categorize slots using
explicit category parent objects. Extra syntax is provided to annotate
objects and slots.
o A new profiler has been added, which can properly account for the
time spent in different processes and the run-time system, and which
presents a source-level profile including type information (i.e.,
methods inherited by different objects are not amalgamated in the
profile, nor are calls to the same method from different sites). It
also presents a consistent source-level view, abstracting from the
various compiler optimizations (such as inlining) which may confuse
the programmer.
o Privacy is not enforced, although the privacy syntax is still
accepted. The previous scheme was at once too restrictive (in that
there was no notion of "friend" objects) and too lax (too many object
had access to a private slot). We hope to include a better scheme in
the next release.
o The "new" compiler has been supplanted by the SIC ("simple inlining
compiler"), and the standard configuration of the system is to
compile first with a fast non-optimizing compiler and to
recompile later with the SIC. Pauses due to compilation or
recompilation are much smaller, and applications usually run faster.
o Characters are now single-byte strings. There is no separate
character traits.
o Prioritized inheritance has been removed; the programmer must now
manually resolve conflicts. We found the priority mechanism of
limited use, and had the potential for obscure errors.
2.4 Bug Reports
Bug reports can be sent to self-bugs@self.stanford.edu. Please include
an exact description of the problem and a short Self program
reproducing the bug.
2.5 Documentation
This release comes with two manuals:
How to Use Self 3.0 (SelfUserMan.ps)
The Self Programmer's Reference Manual (progRef.ps)
Happy Holidays!
-- The Self Group
>14 C++ gram, etc.
What: ftp site for C++ material
From: schrod@iti.informatik.th-darmstadt.de (Joachim Schrod)
Date: 27 May 92 22:32:35 GMT
There were a lot of questions about C++ material in the last time and some
announcements which involved our ftp server.
ftp.th-darmstadt.de [130.83.55.75]
/pub/programming/languages/C++
At the moment we have:
-- documentation and assorted stuff
C++ products list as announced by Saumen K Dutta (in a subdirectory!)
C++ YACC grammar, ET++ tutorial, summaries from the Net,
sources from James Coplien's book (idioms...), etc.
-- class libraries
NIHCL (original, persistent for ObjectStore, with g++ 1.4x changes)
COOL, OATH, RogueWave vector, ET++,
RPC package, a package for sockets, awe (thread package)
-- tools
class browser (for GNU Emacs), indent++, yacc+, template
processor of Brad Cox[sp?], DEC garbage collector
More stuff is always welcome. (Btw, Interviews and Motif C++ wrapper
classes are to be found in the /pub/X11 subtree.)
>15 ConceptBase (OODB, reqkey)
What: ConceptBase
See APPENDIX B.
A four week test-version of ConceptBase V3.1 is available
on the FTP server ftp.informatik.rwth-aachen.de in the
directory pub/CB. For running the ftp version you must ask for a
key by email.
>16 C++ OODB
From: darrenp@dibbler.cs.monash.edu.au (Daz)
Subject: Re: Class libraries for accessing RDBs ?
Organization: Monash University, Melb., Australia.
Date: Thu, 17 Jun 1993 23:53:22 GMT
shekar@gizmo.CS.MsState.Edu (Chandrashekar Ramanathan) writes:
>Hello,
> Are there any shareware/ftp'able C++ class libraries that
>provide Relational Database access? I would also appreciate any
>pointers (ideas/articles/journals) to the various issues that one has
>to consider in designing such library.
Ok, I'm not sure if it's exactly what you want, but it's a database, it's
fully written in c++ with classes etc, and it's out for beta testing.
Check out pippin.cs.monash.edu.au:pub/export/diamond-0.1.2.tar.Z
and please mail darrenp@dibbler.cs.monash.edu.au if you decide to play with
it.
Daz.
--
Darren Platt, Department of Computer Science
darrenp@dibbler.cs.monash.edu.au
Monash University, Clayton Melbourne, Victoria, Australia
>17 Exodus (Storage Man, perst)
What: Exodus project software (Storage Manager & GNU E)
From: zwilling@caseus.cs.wisc.edu (Mike Zwilling)
Date: 16 Jul 92 04:53:19 GMT
In the past there have been discussions in comp.object and comp.databases
about persistent storage for object-oriented databases and programming
languages. As you may know, the EXODUS Database Toolkit project at the
University of Wisconsin has researched these issues and others for a number of
years. The purpose of this note is to inform you that the software from the
EXODUS project is freely available via anonymous ftp. The EXODUS software
includes the EXODUS Storage Manager and the compiler for the E persistent
programming language. Also included is documentation, and a suite of test
programs for both components. This note briefly describes the software and
explains how to obtain it. We currently support DECstation 3100s/5000s and
SPARC based workstations. Others have ported the code to HP700s and IBM
RS6000s.
The EXODUS Storage Manager is a client-server object storage system which
provides "storage objects" for storing data, versions of objects, "files"
for grouping related storage objects, and indexes for supporting efficient
object access. A storage object is an uninterpreted container of bytes which
can range in size from a few bytes to hundreds of megabytes. The Storage
Manager provides routines to read, overwrite, and efficiently grow and shrink
objects. In addition, the Storage Manager provides transactions, lock-based
concurrency control, and log-based recovery.
GNU E is a persistent, object-oriented programming language developed as part
of the Exodus project. GNU E extends C++ with the notion of persistent data,
program level data objects that can be transparently used across multiple
executions of a program, or multiple programs, without explicit input and
output operations.
GNU E's form of persistence is based on extensions to the C++ type system to
distinguish potentially persistent data objects from objects that are always
memory resident. An object is made persistent either by its declaration (via
a new "persistent" storage class qualifier) or by its method of allocation
(via persistent dynamic allocation using a special overloading of the new
operator). The underlying object storage system is the Exodus storage manager,
which provides concurrency control and recovery in addition to storage for
persistent data.
The current release of GNU E is based on gcc/g++ version 2.2.2, and is upward
compatible with C++ as implemented by that compiler.
A bibliography of EXODUS related papers can be obtained from the ftp site
described below.
To obtain the software, simply ftp to ftp.cs.wisc.edu (128.105.8.18), login
as anonymous with your email address as a password, "cd" to the "exodus"
directory, and follow the directions (directions will be given as you "cd").
See the README for the latest information about the software and an indication
of our future plans. If you decide to use the software, please contact us at
exodus@cs.wisc.edu so that we can notify you of changes.
>18 GRAS
GRAS - A Graph-Oriented Database System for SE Applications
Copyright (C) 1987-1992 Lehrstuhl Informatik III, RWTH Aachen
This library is free software under the terms of the GNU Library
General Public License.
Lehrstuhl f"ur Informatik III --> GRAS
University of Technology Aachen (RWTH Aachen),
Ahornstr. 55,
D-5100 Aachen
Contact : Dr. Andy Sch"urr (or Richard Breuer),
andy@rwthi3.informatik.rwth-aachen.de
ricki@rwthi3.informatik.rwth-aachen.de (for technical support)
The system GRAS with interfaces for the programming languages Modula-2
and C is available as public domain software for Sun3/Sun4 workstations
(the GRAS system itself is implemented in Modula-2 and consists of many
layers which might be reusable for the implementation of other systems):
Via anonymous ftp from tupac-amaru.informatik.rwth-aachen.de
(137.226.112.31) in the directory /pub/unix/GRAS522_3
There are several files contain documentation, sources, binaries,
and libraries. All binaries are for Sun/4 machines. Sun/3 binaries
are shipped only if explicitly requested.
[See APPENDIX B]
>19 MOOD (OODB, lim arch)
What: MOOD/P3 Ver.2.00 OODBS {Miniature,Materials}OODBS.
From: ono@mood.mech.tohoku.ac.jp (Noboru Ono)
Date: 18 May 92 10:28:42 GMT
The following program/sample database package is available through anonymous
FTP at mood.mech.tohoku.ac.jp (130.34.88.61). Sorry it is not the sources and
operates only in NEC-PC9801/MS-DOS environment. Sorry again documents are all
in Japanese. We will tell you later when English documents has become ready.
MOOD/P3 Ver.2.00
Material's Object-Oriented Database, Prototype 3
This program, as you may guess,
1) is an Object-Oriented database system program,
2) operates on PC-9801 series personal computer, and
3) is accompanied by sample material database schema.
Although this program has been developed and being used in the experiments
on material data processing in which we are now involved, it is a general
purpose OODBS.
Noboru Ono
Dept. of Machine Intelligence and Systems Engineering,
Faculty of Engineering, Tohoku University.
Tel:++22-222-1800
Fax:++22-268-3688
E-mail:ono@mood.mech.tohoku.ac.jp
>20 Ode (C++ OODB)
Note: Ode version 3.0 is now available.
What: Ode Release 1.1
From: nhg@research.att.com
Ode is an object-oriented database based on the C++ database model. The
primary interface to Ode is the database programming language O++ which is
based on C++.
Ode 1.1 is now available to Universities. This is a beta release. The
current version of Ode runs on Sun (Sparc) workstations and users must have
C++ release 2.0 or a later release. If you are interested in using Ode and
giving us feedback on your experience with Ode, please send me mail with the
appropriate information.
Narain Gehani
AT&T Bell Labs 3D-414
600 Mountain Ave
Murray Hill, NJ 07974
From: thssamj@iitmax.iit.edu (Aditya M. Jani)
Subject: *Announcement* UserGroup for ODE (OODBMS from AT&T)
Organization: Illinois Institute of Technology, Chicago
Date: Fri, 25 Jun 93 17:27:53 GMT
Ode Object database v2.0
------------------------
Ode 2.0 is available via ftp from research.att.com.
Here is a sample session showing how to retrieve Ode 2.0
which is kept in the directory
dist/ode2.0
as a compressed tar file named
2.0.oppbin.tar.Z
First create the directory on the local machine
where ode is to be installed, e.g.,
mkdir ode
cd ode
Retrieve the compressed tar Ode file using ftp into
as illustrated below.
Then uncompress it
uncompress 2.0.oppbin.tar.Z
and unbundle it
tar xvf 2.0.oppbin.tar
Next see file README, fix install file, and run install
./install
Sample ftp session
--------------
$ ftp research.att.com
Connected to tcp!192.20.225.2!1390.
220 inet FTP server (Version 4.271 Fri Apr 9 10:11:04 EDT 1993) ready.
Name (research.att.com:smith): anonymous
331 Guest login ok, send ident as password.
Password: smith@hostname
230 Guest login ok, access restrictions apply.
Remote system type is UNIX.
Using binary mode to transfer files.
ftp> cd dist
250 CWD command successful.
ftp> cd ode2.0
250 CWD command successful.
ftp> get 2.0.oppbin.tar.Z
200 PORT command successful.
150 Opening BINARY mode data connection for 2.0.oppbin.tar.Z (2762525
bytes).
226 Transfer complete.
2762525 bytes received in 1.6e+02 seconds (16 Kbytes/s)
ftp> quit
221 Goodbye.
-------------------------------------------------------------------------------
Available Now!
Ode 2.0
An Object-Oriented Database
C++ Compatible, Fast Queries, Complex Application Modeling,
Multimedia Support, and more
Ode 2.0 is now available to Universities. Users who currently
have Ode 1.1 will be automatically sent a tape with Ode 2.0.
There is no charge for Ode. However, AT&T requires the signing
of a non-disclosure agreement.
Details
-------
ODE OBJECT-ORIENTED DATABASE
The Ode object database is based on the C++ object paradigm.
Ode uses one integrated data model (C++ classes) for both
database and general purpose manipulation. The Ode database
is defined, queried and manipulated in the database
programming language O++, which provides simple and elegant
facilities for manipulating the database.
O++ is an upward-compatible extension of C++. A few
facilities have been added to C++ to make it into a database
programming language. C++ programmers can learn O++ in a
very short time.
O++ programs can be compiled with C++ programs thus allowing
the use of existing C++ code.
THE ODE MODEL OF PERSISTENCE
Ode offers a simple and elegant notion of persistence which
is modeled on the ``heap''. Specifically, memory is
partitioned into volatile and persistent. Volatile objects
are allocated in volatile memory (stack or heap).
Persistent objects are allocated in persistent store and
they continue to exist after the program that created them
has terminated.
An Ode database is a collection of persistent objects. Each
object is identified by a unique object id (i.e., a
persistent pointer, or to be precise, a pointer to a
persistent object).
The database programming language O++ provides facilities
for creating and manipulating the Ode database. For
example, O++ provides facilities for specifying
transactions, creating and manipulating persistent objects,
querying the database, creating and manipulating versions.
WHAT IS AN OBJECT-ORIENTED DATABASE
Some important characteristics of an object-oriented
database are:
+ data is stored as objects,
+ data can be interpreted (using methods) only as
specified by the class designer,
+ relationship between similar objects is preserved
(inheritance), and
+ references between objects are preserved.
ADVANTAGES OF OBJECT-ORIENTED DATABASES
+ Speed: Queries can be faster because joins (as in
relational databases) are often not needed. This is
because an object can be retrieved directly without a
search, by following object ids.
+ No impedance mismatch: The same data model is used by
both the database programming language and the
database; it is not necessary to do any format
conversions when reading the data from disk and when
storing the data on disk.
+ Programmers need to learn only one programming
language: The same programming language is used for
both data definition and data manipulation.
+ Complex applications: The full power of the database
programming language's type system can be used to model
the data structures of a complex application and the
relationship between the different data items.
+ Multimedia applications: The semantic information
stored in the database (class methods) facilitates
correct interpretation of the data. This reduces
application complexity since applications do no have to
be responsible for the correct interpretation of data.
+ Versions: Object-oriented databases typically provide
better support for versioning. An object can viewed as
the set of all its versions. Also, object versions can
be treated as full fledged objects.
+ Triggers and constraints: Object-oriented databases
provide systematic support for triggers and constraints
which are the basis of active databases.
Finally, most, if not all, object-oriented applications that
have database needs will benefit from using an object-
oriented database. Specifically, C++ applications that have
database needs will benefit from using Ode.
FEATURES OF ODE
1. Ode is C++ based and compatible with C++.
2. The Ode object database provides four object
compatible mechanisms for manipulating and querying
the database: O++, OdeView, OdeFS, and CQL++:
+ O++ is a database programming language based on
C++. O++ is upward compatible with C++ and it
makes minimal changes to C++. O++ offers a
simple and elegant notion of persistence which is
modeled on the ``heap''. O++ provides facilities
for querying the database, and a variant of other
facilities.
+ OdeView is a graphical X-based interface to the
Ode database.
+ OdeFS is a file system interface to the Ode
object database. OdeFS allows objects to be
treated and manipulated like files. Standard
commands such as rm, cp and mv and tools such as
vi and grep can be used to manipulate objects in
the database.
+ CQL++ is a C++ variant of SQL for easing the
transition from relational databases to object-
oriented databases such as Ode.
Currently, only O++ is shipped with Ode 2.0. A beta-
test version of OdeFS is available upon request.
3. Ode supports large objects (these are critical for
multi-media applications). Ode provides both
transparent access for large objects and a file like
interface for large objects. The latter can be used
to efficiently access and update parts of a large
object.
4. Users can create versions of objects. Ode will track
the relationship between versions and provides
facilities for accessing the different versions.
5. Transactions can be specified as read-only; such
transactions are faster because they are not logged
and they are less likely to deadlock.
6. Users can run ``hypothetical'' transactions.
Hypothetical transaction allow users to pose ``what-
if'' scenarios (as often done with spread sheets).
User can change data and see the impact of these
changes without changing the database.
7. EOS, the storage engine of Ode, is based on a client-
server architecture. Some features of EOS:
a. Efficient and transparent handling of large
objects. A file-like interface is also provided
for very large objects.
b. Concurrency is based on multi-granularity two-
version two-phase locking; it allows many
readers and one writer to access the same item
simultaneously.
c. Log records contain only after images of
updates, thus making logs small. Recovery from
system failures requires one scan over the log
resulting in fast restarts.
USE MODES
Ode supports two modes of use:
1. Client-server (allows multiple users to access the
database concurrently).
2. Single user (improved performance compared to using
the client-server mode).
USERS
Ode 2.0 is currently being used as the multi-media database
engine for AT&T's Interactive TV project. Ode 1.1 (older
version of Ode with limited capabilities) has also been
distributed to 30+ sites within AT&T and 135+ universities.
>21 POSTGRES (Ext. Rel. DBMS)
What: Version 4.0 of the POSTGRES DBMS
From: mer@gaia.CS.Berkeley.EDU (Jeff Meredith)
Date: 16 Jul 92 04:53:17 GMT
Version 4.0 of the POSTGRES DBMS is now available for distribution. Version 4.0
provides significant advances in functionality over 3.1. General improvements
in the code and some key multi-user bug fixes have resulted in a much more
reliable system than we have ever previously released.
Major new features include:
o Complete support for language (POSTQUEL) functions.
o Handling of nested dot expressions.
o Optimization of predicates with expensive functions.
o Binary portals
o Initial support of sets
o Indices on system catalogs.
Postgres runs on Sparc I, Sparc II, Sun 4 running SunOs, and DECstations
running ULTRIX >= 4.0, as well as Sequent Symmetry machines. Postgres
consists of about 250,000 lines of C.
If you would like to get Postgres 4.0, you can get it in one of two ways:
(1) Anonymous FTP from postgres.berkeley.edu
cd pub
get postgres-setup.me
binary
get postgres-v4r0.tar.Z
quit
Or, if you do not have net.access, you can order a Postgres distribution
tape by sending a check payable to the Regents of the University of California
for $150.00 to:
Postgres Project
571 Evans Hall
University of California
Berkeley, CA 94720.
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