Squeak-dev October 2007

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195 discussions

Postgres Access From Squeak
by Bruce Carleton 20 Oct '07

20 Oct '07

I'm contemplating moving a couple of PHP web sites to Seaside that are backed by a Postgres database. This is being done in parallel with the creation of morphic applications that may eventually share code with the web sites. I'm curious what active Squeak developers are using for postgresql database access. I'm looking at Glorp and another PostgreSQL V2 Client for Squeak by Yanni Chiu. I'm interested in automatic object - > table-row mappings but I don't mind building my own database access objects calling SQL. This is partially due to my use of stored procedures in postgresql for certain queries that are shared elsewhere. Any advice? Thanks in advance, --Bruce

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TTCFont DNU #fontArray
by Giuseppe Luigi Punzi Ruiz 20 Oct '07

20 Oct '07

Hi all, I have a 3.9 image with some packages installed from Universes. When I create a Morphic Project, and open it (or going to previous Project to go to "root" from it) I get a DNU #fontArray Here are the debug log. ***** DEBUG LOG ***** MessageNotUnderstood: TTCFont>>fontArray 20 October 2007 11:29:02 am VM: Mac OS - a SmalltalkImage Image: Squeak3.9 [latest update: #7068] SecurityManager state: Restricted: false FileAccess: true SocketAccess: true Working Dir /Users/glpunzi/Desarrollo/Imagen-Base Trusted Dir /foobar/tooBar/forSqueak/bogus Untrusted Dir /Users/glpunzi/Library/Preferences/Squeak/Internet/My Squeak TTCFont(Object)>>doesNotUnderstand: #fontArray Receiver: TTCFont(BitstreamVeraSans 11 Roman) Arguments and temporary variables: aMessage: fontArray Receiver's instance variables: ttcDescription: a TTFontDescription('Bitstream Vera Sans') pointSize: 11 foregroundColor: Color blue cache: #(nil) derivatives: an Array(TTCFont(BitstreamVeraSans 11 Bold) TTCFont (BitstreamVeraS...etc... fallbackFont: nil ascent: 11.0 Message>>sentTo: Receiver: fontArray Arguments and temporary variables: receiver: TTCFont(BitstreamVeraSans 11 Roman) Receiver's instance variables: selector: #fontArray args: #() lookupClass: TTCFont TTCFont(Object)>>doesNotUnderstand: #fontArray Receiver: TTCFont(BitstreamVeraSans 11 Roman) Arguments and temporary variables: aMessage: fontArray Receiver's instance variables: ttcDescription: a TTFontDescription('Bitstream Vera Sans') pointSize: 11 foregroundColor: Color blue cache: #(nil) derivatives: an Array(TTCFont(BitstreamVeraSans 11 Bold) TTCFont (BitstreamVeraS...etc... fallbackFont: nil ascent: 11.0 Latin1Environment(LanguageEnvironment)>>isFontAvailable Receiver: a Latin1Environment Arguments and temporary variables: encoding: 1 Receiver's instance variables: id: en --- The full stack --- TTCFont(Object)>>doesNotUnderstand: #fontArray Message>>sentTo: TTCFont(Object)>>doesNotUnderstand: #fontArray Latin1Environment(LanguageEnvironment)>>isFontAvailable - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - - Locale class>>switchAndInstallFontToID: Project>>finalEnterActions Project>>enter:revert:saveForRevert: ProjectViewMorph>>enter ProjectViewMorph>>mouseUp: ProjectViewMorph(Morph)>>handleMouseUp: MouseButtonEvent>>sentTo: ProjectViewMorph(Morph)>>handleEvent: ProjectViewMorph(Morph)>>handleFocusEvent: [] in HandMorph>>sendFocusEvent:to:clear: {[ActiveHand := self. ActiveEvent := anEvent. result := focusHolder han...]} [] in PasteUpMorph>>becomeActiveDuring: {[aBlock value]} BlockContext>>on:do: PasteUpMorph>>becomeActiveDuring: HandMorph>>sendFocusEvent:to:clear: HandMorph>>sendEvent:focus:clear: HandMorph>>sendMouseEvent: HandMorph>>handleEvent: HandMorph>>processEvents [] in WorldState>>doOneCycleNowFor: {[:h | ActiveHand := h. h processEvents. capturingGesture := capturingGest...]} Array(SequenceableCollection)>>do: WorldState>>handsDo: WorldState>>doOneCycleNowFor: WorldState>>doOneCycleFor: PasteUpMorph>>doOneCycle [] in Project class>>spawnNewProcess {[[World doOneCycle. Processor yield. false] whileFalse. nil]} [] in BlockContext>>newProcess {[self value. Processor terminateActive]}

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Seaside Builder preview
by Hernán Morales 20 Oct '07

20 Oct '07

Hello list, I've been working on the development of an interface builder for Seaside (see also http://www.nabble.com/Web-controls-for-Seaside-t3929461.html ). Although isn't ready yet for deployment, I think it would be available at the end of this year or first months of 2008. Anyway, I did a video for those who want to see the current progress: http://smartware.com.ar/builder.avi http://cs.hernanmorales.com.ar/SeasideBuilder.avi (19Mb) If anybody has recommendations or comments, I'll be glad to read them. Hernán

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Squeak vs. privacy
by Blake 20 Oct '07

20 Oct '07

Hey, all, I thought the "Tim vs. Accessors" was great. I learned a lot. Everybody stated their positions without anyone getting into a high dudgeon, even if no minds were changed. And as I originally suggested, the root problem seems to be lack of privacy for accessors. (Although I've been toying with the argument that if the inst-var needs to be accessed with an accesor to encapsulate it from the rest of the class, perhaps IT needs to be its own class.) Anyway, while I'm a long-time foe of the "private" designation ("no one shall ever need to touch this feature again"), I do like the various forms of scoping allowed by other languages: protected, public, even published (which is a cute trick for a non-reflective language, not really useful in Smalltalk). At the end of the thread, Tim points out some of the challenges with implementing scope, and some kinds: Class-to-Instance Instance-to-instance with which I wholeheartedly agree. Tim adds: "Privacy violation What should happen? An exception? A resumable one? Core dump?" I would sugget a DNU should occur. My next question, then, is couldn't this be as simple (from the user's perspective) as placing methods in specific categories, for example: strict private (for self only); private (for class and maybe sibling access); protected (for ancestors)? Maybe that's too complicated, dunno. My gut feeling is that there's tremendous potential benefit to this; that greater encapsulation might help with the rot. But certainly Smalltalk is old enough have had something like this done before, so maybe I'm mmissing something. ===Blake===

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Transcript contents is empty?
by John M McIntosh 19 Oct '07

19 Oct '07

In Sophie I was going to grab the contents of the Transcript and write that to our error server. However I find that Transcript show: 'foo'. Transcript contents size = 0 ifTrue: [self halt]. Obviously I would have *thought* that asking for Transcript contents would have returned what is on the Transcript. But it doesn't. So I'm wondering if this is a bug or feature? PS Squeak 3.10alpha #7092 but same behaviour in 3.8.1 -- ======================================================================== === John M. McIntosh <johnmci(a)smalltalkconsulting.com> Corporate Smalltalk Consulting Ltd. http://www.smalltalkconsulting.com ======================================================================== ===

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Re: [ANN] New Seaside tutorial
by Klaus D. Witzel 19 Oct '07

19 Oct '07

This tutorial is excellent, thank you for the very good work :) /Klaus On Fri, 19 Oct 2007 12:58:35 +0200, Michael Perscheid wrote: > Dear list, > > We proudly present a new Seaside tutorial (for Squeak 3.10 and Seaside > 2.8). > This tutorial was produced by the Software Architecture Group at the > Hasso-Plattner-Institut (University of Potsdam). In ten chapters we > describe > step by step the development of a ToDo-application and thereby > demonstrate > the main parts of the sophisticated web framework Seaside. > Since this is the first version we hope that you can help to improve the > quality by providing feedback. > > Have a look at: http://www.swa.hpi.uni-potsdam.de/seaside/tutorial > > Regards > Michael Perscheid > > >

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RE: [Seaside] [ANN] New Seaside tutorial
by Ron Teitelbaum 19 Oct '07

19 Oct '07

Hello All, We have a new tutorial! http://news.squeak.org/2007/10/19/new-seaside-tutorial-by-hasso-plattner-ins titute/ Thanks for all your hard work; it's very exciting to see new documentation! Ron Teitelbaum Squeak News Team Leader > -----Original Message----- > From: Michael Perscheid > > Dear list, > > We proudly present a new Seaside tutorial (for Squeak 3.10 and Seaside > 2.8). > This tutorial was produced by the Software Architecture Group at the > Hasso-Plattner-Institute (University of Potsdam). In ten chapters we > describe step by step the development of a ToDo-application and thereby > demonstrate the main parts of the sophisticated web framework Seaside. > Since this is the first version we hope that you can help to improve the > quality by providing feedback. > > Have a look at: http://www.swa.hpi.uni-potsdam.de/seaside/tutorial > > Regards > Michael Perscheid >

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[ANN] New Seaside tutorial
by Michael Perscheid 19 Oct '07

19 Oct '07

Dear list, We proudly present a new Seaside tutorial (for Squeak 3.10 and Seaside 2.8). This tutorial was produced by the Software Architecture Group at the Hasso-Plattner-Institut (University of Potsdam). In ten chapters we describe step by step the development of a ToDo-application and thereby demonstrate the main parts of the sophisticated web framework Seaside. Since this is the first version we hope that you can help to improve the quality by providing feedback. Have a look at: http://www.swa.hpi.uni-potsdam.de/seaside/tutorial Regards Michael Perscheid

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Re: [Seaside] Seaside BOF at OOPSLA
by Göran Krampe 19 Oct '07

19 Oct '07

Hi Squeakers and Seasiders! > Since I know that a number of people involved with Seaside will be at > OOPSLA next week in Montreal I thought it would be interesting to > have a Seaside BOF (Birds of a Feather Session). A few other people > seemed interested. After looking at the OOPSLA schedule and the other > related BOFs it looks the time with the least conflicts for a Seaside > BOF is Wednesday October 24, 17:00. I have put it on the OOPSLA BOF > wiki page (http://www.oopsla.org/wiki2007/index.php/ > Birds_of_a_Feather_Sessions). Ok, I am starting to get worried that the Squeak BOF will be smallish this year - we only have two presentations listed (me and Bert) and mine will be quite improvised, so do we really need to split Squeak and Seaside BOF? Last year we presented Seaside apps on the Squeak BOF and so on. In any case I will be on both and might have something to show/talk about on the Seaside BOF too - unless there are others around with more interesting stuff of course. :) regards, Göran

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eCompletion enhancements
by Chris Muller 19 Oct '07

19 Oct '07

I don't think Ruben ever got around to publishing my eCompletion enhancements, so I posted them on Mantis. http://bugs.squeak.org/view.php?id=6735 - Chris

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