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Stdb MySQL Protocol Driver update in squeaksource
by Anindya Haldar Oct. 2, 2011

Oct. 2, 2011

A couple of updates to the Stdb* projects in SqueakSource. Project StdbMysqlProtocol: There is a new version of the protocol driver that can now handle authentication for MySQL users with old style (short hash) passwords. It handles the fallback silently during the handshake. This was an issue reported by Andreas for the previous version of the driver package. Project StdbMysqlImpl : There is a new version of the Stdb API implementation for MySQL. This one has some test infrastructure fixes, and consolidates the use of test credentials so that a single username/password combination is used for all tests. The packages were tested with MySQL 5.0.67 community edition under Mac OS X. Best, Anindya

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Re: [Pharo-users] [Pharo-project] [squeak-dev] Started to post Videos of "Deep into Smalltalk"
by Marcus Denker Sept. 30, 2011

Sept. 30, 2011

On Sep 30, 2011, at 9:52 AM, Alexander LazareviÄ wrote: > 2011/9/30 Marcus Denker <marcus.denker(a)inria.fr>: >> and the classic talk of Doru from ESUG 2008 showing how (not) to give ESUG talks. > > Saw it for the first time! Nice :) > > Even if this is most likely a very well known service, it can't hurt > to mention http://www.slideshare.net as a source of inspiration. > Yes! We put all ESUG slides there, too: http://www.slideshare.net/esug/ (335 Talks!) So the slides of the presentation are there, too: http://www.slideshare.net/esug/1-presentingatesug -- Marcus Denker -- http://marcusdenker.de

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Re: [Pharo-users] SystemReporter for Pharo [WAS] Fwd: [Pharo-project] [update 1.4] #14177
by Mariano Martinez Peck Sept. 30, 2011

Sept. 30, 2011

On Fri, Sep 30, 2011 at 2:51 PM, Alexander LazareviÄ <laza(a)blobworks.com>wrote: > Mariano, > > great that you made it work in Pharo. Yes, we have a couple of problems...but not that big. Thanks for doing this useful tool. > Below method was just a work in progress. > > Excellent then, nothing to report :) > Thanks, > Alex > > 2011/9/30 Mariano Martinez Peck <marianopeck(a)gmail.com>: > > Hi guys. This is a small tool done by Alexander LazareviÄ to get > > information from the system. Very useful when reporting bugs. So keep it > in > > mind. > > You can do SystemReporter open. or directly open it from the menu System > -> > > SystemReporter. > > > > Alexandre: we found an implemented message #environ in: > > reportOSEnvironment: aStream > > > > | env | > > self header: 'Operating System Environment' on: aStream. > > env := [Smalltalk os environ] on: Error do: [^self]. > > env keys asSortedCollection do: [:name | > > aStream nextPutAll: name; nextPut: $=; nextPutAll: (env at: > name); > > cr] > > > > so...it seems broken. > > > > If you want to take a look to the changes we have to do in order to make > it > > work in Pharo: > > > > http://www.squeaksource.com/SystemReporterPharo > > > > Cheers > > > > > > ---------- Forwarded message ---------- > > From: Marcus Denker <marcus.denker(a)inria.fr> > > Date: Fri, Sep 30, 2011 at 11:43 AM > > Subject: [Pharo-project] [update 1.4] #14177 > > To: An open mailing list to discuss any topics related to an open-source > > Smalltalk <Pharo-project(a)lists.gforge.inria.fr> > > > > > > 14177 > > ----- > > > > Issue 4851: We should integrate systemReporter > > http://code.google.com/p/pharo/issues/detail?id=4851 > > > > > > > > -- > > Marcus Denker -- http://marcusdenker.de > > > > > > > > > > > > -- > > Mariano > > http://marianopeck.wordpress.com > > > > > -- Mariano http://marianopeck.wordpress.com

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SystemReporter for Pharo [WAS] Fwd: [Pharo-project] [update 1.4] #14177
by Mariano Martinez Peck Sept. 30, 2011

Sept. 30, 2011

Hi guys. This is a small tool done by Alexander LazareviÄ to get information from the system. Very useful when reporting bugs. So keep it in mind. You can do SystemReporter open. or directly open it from the menu System -> SystemReporter. Alexandre: we found an implemented message #environ in: reportOSEnvironment: aStream | env | self header: 'Operating System Environment' on: aStream. env := [Smalltalk os environ] on: Error do: [^self]. env keys asSortedCollection do: [:name | aStream nextPutAll: name; nextPut: $=; nextPutAll: (env at: name); cr] so...it seems broken. If you want to take a look to the changes we have to do in order to make it work in Pharo: http://www.squeaksource.com/SystemReporterPharo Cheers ---------- Forwarded message ---------- From: Marcus Denker <marcus.denker(a)inria.fr> Date: Fri, Sep 30, 2011 at 11:43 AM Subject: [Pharo-project] [update 1.4] #14177 To: An open mailing list to discuss any topics related to an open-source Smalltalk <Pharo-project(a)lists.gforge.inria.fr> 14177 ----- Issue 4851: We should integrate systemReporter http://code.google.com/p/pharo/issues/detail?id=4851 -- Marcus Denker -- http://marcusdenker.de -- Mariano http://marianopeck.wordpress.com

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Started to post Videos of "Deep into Smalltalk"
by Marcus Denker Sept. 30, 2011

Sept. 30, 2011

Hello, After a long wait... finally: http://www.youtube.com/user/esugboard#grid/user/843D1D545F9F52B6 This now has: - Extensive, great two part PetitParser Tutorial by Doru (3 hours) http://www.youtube.com/watch?v=vgiJG3Vd6KU If you ever wanted to write a Parser, this will give you a very understandable, step-by-step introduction. - Enhancing SqueakNOS. http://www.youtube.com/watch?v=u9RUmIY2Sz8 Crazy, these Argentinians... - NativeBoost: http://www.youtube.com/watch?v=Bd6mz6F167s Generate Binary code from the image. And a *very* fast FFI as an example. Guido and Javier of the SqueakNOS video above are right now busy here in Lille building something *very* interesting with NativeBoost... - FFI, an introduction by Igor: http://www.youtube.com/watch?v=fU8XRCO7MUU What is FFI and how do we use it? - and the first part of "A little Journey in a Virtual Machine" http://www.youtube.com/watch?v=FJQmjhOvjUs This has 5 (!) parts and together with the FFI presentation, this allows you to experience the very first lecture ever given by Igor Stasenko. More to come... but this already might keep interested people busy for some enternaining evenings :-) We will post all the rest step by step. The ESUG Youtube account has more stuff posted already, e.g. the talks of this years IWST Workshop and some talks of ESUG2011, and the classic talk of Doru from ESUG 2008 showing how (not) to give ESUG talks. All here: http://www.youtube.com/user/esugboard Marcus -- Marcus Denker -- http://marcusdenker.de

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Finding Instance Variables
by Raymond Brinzer Sept. 30, 2011

Sept. 30, 2011

Hello. I'm a Smalltalk novice. I'm wondering: how would I get the set of instance variables for a particular class? I see Class has an allClassVarNames method, but I don't see something analogous for instance variables. Thanks. -- Ray

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Now available: a database conectivity API and its MySQL implementation
by Anindya Haldar Sept. 29, 2011

Sept. 29, 2011

I am extremely pleased to offer to the community a generic Smalltalk API for database connectivity API, along with a MySQL implementation written from ground up. Think of JDBC and DBI like interfaces in other languages and environments, and this one offers abstract facilities like connection, prepared statement, resultset, row, metdata and so on for the application. The API implementation uses driver delegates, and insulates the applications from the driver specific interfaces. As of now, a MySQL implementation is available, with other databases engine supports in the future plans. The API supports server side prepared statements and cursor based fetch implemented in the MySQL driver. The implementation is currently available in 3 parts: 1) StdbCore project: This is primarily the API definitions and the delegation logic URL: http://www.squeaksource.com/StdbCore.html 2) StdbMysqlImpl project: This is the MySQL implementation of the StdbCore API URL: http://www.squeaksource.com/StdbMysqlImpl.html 3) StdbMysqlProtocol project: This is the underlying MySQL protocol driver, and used by the MySQL API implementation URL: http://www.squeaksource.com/StdbMysqlProtocol.html There is a package load ordering dependency (documented in the MySQL implementation project). Please load the core and the protocol driver packages first, before you load the implementation package. Combined, the packages has around 200 tests (most of them in the protocol driver and the API implementation) and are running green on Pharo 1.1.1 one click, Squeak 4.2 one click, Squeak 3.10 (with Seaside 2-8-573 dev image) under Mac OS X 10.5.8 with MySQL server 5.0.67. This was in the making for some time; and I feel it is time to share it with the community. I will continue to post more documentation and code snippets in the project page Wiki sections. For now, looking up the tests may be your best guide. Happy programming! Best, Anindya Haldar

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About the Pharo CogVM
by Sven Van Caekenberghe Sept. 29, 2011

Sept. 29, 2011

99% of the mails on this list are about issues, problems or feature requests, not this one. I did a new clean server deploy this week and decided to use the new VM as currently advertised on the downloads page, CogVM-Unix-13307, that I presume came from the CI system. I am using a 1.3 image with Seaside 3. $ ./coglinux/CogVM -version 3.9-7 #1 Wed Aug 31 14:50:51 CEST 2011 gcc 4.1.2 Croquet Closure Cog VM [CoInterpreter VMMaker-oscog-IgorStasenko.123] Linux pharo-build.lille.inria.fr 2.6.18-194.26.1.el5xen #1 SMP Tue Nov 9 14:13:46 EST 2010 i686 i686 i386 GNU/Linux plugin path: /home/ubuntu/coglinux/ [default: /home/ubuntu/coglinux/] I am happy to report that all went well: the CogVM distro is small and clean, and performed perfectly building new images and running the application server code. FYI, the server I am using is an Amazon EC2 micro instance with Ubuntu 11.04 32-bit. Thanks a lot ! Sven PS: I do think the VM could use some more branding here and there, especially the Mac one, but that is another story.

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Re: [Pharo-users] Now available: a database conectivity API and its MySQL implementation
by Anindya Haldar Sept. 29, 2011

Sept. 29, 2011

Thanks Andreas. The MySQL protocol is a native all-Smalltalk MySQL driver. There is no FFI or plugin associated with it. The driver implements the MySQL wire protocol on top of socket stream. Best, Anindya ________________________________ From: Andreas Raab <andreas.raab(a)gmx.de> To: Anindya Haldar <anindya_haldar(a)yahoo.com>; The general-purpose Squeak developers list <squeak-dev(a)lists.squeakfoundation.org> Sent: Thursday, September 29, 2011 1:22 AM Subject: Re: Now available: a database conectivity API and its MySQL implementation Very nice. Quick question: How are you accessing the MySQL db? Are you using a network connection or some FFI facilities? If you are using a network connection, we might have use for your project right away; our current FFI based ODBC implementation causes headaches when the calls take a long time (>1sec). Cheers, Â - Andreas On 9/29/2011 10:11, Anindya Haldar wrote: > I am extremely pleased to offer to the community a generic Smalltalk API > for database connectivity API, along with a MySQL implementation written > from ground up. Think of JDBC and DBI like interfaces in other languages > and environments, and this one offers abstract facilities like > connection, prepared statement, resultset, row, metdata and so on for > the application. > > The API implementation uses driver delegates, and insulates the > applications from the driver specific interfaces. As of now, a MySQL > implementation is available, with other databases engine supports in the > future plans. > > The API supports server side prepared sta tements and cursor based fetch > implemented in the MySQL driver. > > The implementation is currently available in 3 parts: > > 1) StdbCore project: This is primarily the API definitions and the > delegation logic > URL: http://www.squeaksource.com/StdbCore.html > > 2) StdbMysqlImpl project: This is the MySQL implementation of the > StdbCore API > URL: http://www.squeaksource.com/StdbMysqlImpl.html > > 3) StdbMysqlProtocol project: This is the underlying MySQL protocol > driver, and used by the MySQL API implementation > URL: http://www.squeaksource.com/StdbMysqlProtocol.html > > There is a package load ordering dependency (documented in the MySQL > implementation project). Please load the core and the protocol driver > packages first, before you load the implementation package. > > Combined, the packages has around 200 tests (most of them in the > protocol driver and the API implementation) and are running green on > Pharo 1.1.1 one click, Squeak 4.2 one click, Squeak 3.10 (with Seaside > 2-8-573 dev image) under Mac OS X 10.5.8 with MySQL server 5.0.67. > > This was in the making for some time; and I feel it is time to share it > with the community. I will continue to post more documentation and code > snippets in the project page Wiki sections. For now, looking up the > tests may be your best guide. > > Happy programming! > > Best, > Anindya Haldar > > > > >

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A small problem with ScaledDecimal
by Larry White Sept. 27, 2011

Sept. 27, 2011

Hi, I had a need to replace the printOn: implementation in ScaledDecimal so that it didn't include the scale. In other words, I don't want my users to see '3.02s2'. Being lazy, my first impulse was to remove the code from printOn: that appends the scale, but I realized I'd have to do that every time I upgraded my pharo version. Instead I tried to implement a subclass called DisplayableScaledDecimal and override printOn. That seems straightforward and smalltalky, but when I do math on instances of DisplayableScaledDecimal, the results are converted back to ScaledDecimal. Now I'm looking at re-implementing all the math logic in scaledDecimal to avoid that. The problem seems to be in the coerce: method, which reads: coerce: aNumber "Note: this quick hack could be replaced by double dispatching" aNumber class = self class ifTrue: [^self class newFromNumber: aNumber scale: (scale max: aNumber scale)]. (aNumber isFraction or: [aNumber isInteger]) ifTrue: [^self class newFromNumber: aNumber scale: scale]. ^aNumber I guess I could override coerce:, but that seems wrong. So my question to the smalltalk gods on the list is: Could this be fixed with double dispatching as the comment sort of suggests, and would it be a useful thing to do?

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