August 2013 - Pharo-users - lists.pharo.org

Re: [Pharo-users] voyage/mongo randomly wrong OIDs

by Esteban Lorenzano

hi well... I've never been happy on using the UUID generator for my keys, but is the fastest option I found. There are, of course, alternatives: 1) Using your own number generator (sequential, or whatever). Problem with that is that is image based, then you need a persistence strategy... then you are slow. 2) then you can use your own procedure in mongo... with same problem than (1) 3) you could use timestamp. but TimeStamps are slow :( anyway... I open to ideas :) in the mean time, you can check if your UUID generator is using the primitive or not. In you are not, you have more possibilities of having a collision. Esteban On Aug 29, 2013, at 11:27 AM, Sabine KnÃ¶fel <sabine.knoefel(a)gmail.com> wrote: > Hi Esteban, All, > > I was proceeding to seach for the reason of the problem I described > yesterday. > > I added some debugging code into VOMongoSerializer>>ensurePersisted: and the > problem I described, did NOT occur. > > That made the whole process slower...and I had an idea.... > > I was looking into >>UUIDGenerator default makeSeed. > Then I tried the following code: > > |theOld theNew| > > 100000000 timesRepeat: [ > theNew := UUIDGenerator default makeSeed. > theNew = theOld ifTrue: [self halt]. > theOld := theNew] > > The debugger came up! Doesn't that mean that, if the code is run very fast, > there are double OIDs generated?! > > In my case, the objects for country and currency are very lightweight and > so, they are created very fast. Also, the error occured much more often > within my fast production EC2 instance as at my (old and slow) development > pc. > > Important: I work with windows and so >>makeUnixSeed returns nil... :-) > > What is your opinion about that? > > Sabine > > > > -- > View this message in context: http://forum.world.st/voyage-mongo-randomly-wrong-OIDs-tp4705396p4705603.ht… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Aug. 29, 2013

Re: [Pharo-users] voyage/mongo randomly wrong OIDs

by Esteban Lorenzano

file not found :) On Aug 29, 2013, at 2:44 PM, jan.struz <public+pharo(a)struz.cz> wrote: > Hi, > feel free to use & integrate the following fix: > > Fix-Mongo-OID.cs <http://forum.world.st/file/n4705616/Fix-Mongo-OID.cs> > > Jan > > > Sabine KnÃ¶fel wrote >> Hi Esteban, All, >> >> I was proceeding to seach for the reason of the problem I described >> yesterday. >> >> I added some debugging code into VOMongoSerializer>>ensurePersisted: and >> the problem I described, did NOT occur. >> >> That made the whole process slower...and I had an idea.... >> >> I was looking into >>UUIDGenerator default makeSeed. >> Then I tried the following code: >> >> |theOld theNew| >> >> 100000000 timesRepeat: [ >> theNew := UUIDGenerator default makeSeed. >> theNew = theOld ifTrue: [self halt]. >> theOld := theNew] >> >> The debugger came up! Doesn't that mean that, if the code is run very >> fast, there are double OIDs generated?! >> >> In my case, the objects for country and currency are very lightweight and >> so, they are created very fast. Also, the error occured much more often >> within my fast production EC2 instance as at my (old and slow) development >> pc. >> >> Important: I work with windows and so >>makeUnixSeed returns nil... :-) >> >> What is your opinion about that? >> >> Sabine > > > > > > ----- > Save The World! > -- > View this message in context: http://forum.world.st/voyage-mongo-randomly-wrong-OIDs-tp4705396p4705619.ht… > Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com. >

Aug. 29, 2013

Re: [Pharo-users] MSI packaging for Pharo

by Usman Bhatti

After all, I achieved the creation of MSI with the combination of Inno setup and MSI wrapper. Inno setup allows creating a setup.exe from a build script and do several types of tasks at the time of installation. A mere skeleton can be created with the wizard and then changing it isn't so difficult. Moreover, there are many pointers on the web. Creating an MSI wrapper (http://www.exemsi.com/inno-setup-and-msi) for the setup file created with Inno is just a matter of a few clicks. Tx for very helpful pointers. Usman On Tue, Aug 27, 2013 at 10:34 AM, phil(a)highoctane.be <phil(a)highoctane.be>wrote: > You can also use Inno Setup which is nice, easy, and free. > > http://www.jrsoftware.org/isinfo.php#features > > But ok, it doesn't do MSI. > > http://stackoverflow.com/questions/6245260/installers-wix-or-inno-setup > > But you can get around that with http://www.exemsi.com/inno-setup-and-msi > > Good luck. > > Phil > > > > > > On Tue, Aug 27, 2013 at 7:27 AM, HernÃ¡n Morales Durand < > hernan.morales(a)gmail.com> wrote: > >> I have never tried but it seems you can wrap installer in MSI files using >> WiX http://wixtoolset.org/ and this package http://www.exemsi.com/ >> >> To write the installer check this out: >> >> http://code.google.com/p/**biosmalltalk/wiki/**NSISInstallerScript<http://code.google.com/p/biosmalltalk/wiki/NSISInstallerScript> >> >> HernÃ¡n >> >> El 26/08/2013 17:29, Usman Bhatti escribiÃ³: >> >>> On Mon, Aug 26, 2013 at 7:10 PM, StÃ©phane Ducasse >>> <stephane.ducasse(a)inria.fr <mailto:stephane.ducasse@**inria.fr<stephane.ducasse(a)inria.fr>>> >>> wrote: >>> >>> >>> >>> > Hello, >>> > >>> > Does anyone have experience of distributing Pharo-based software >>> as an MSI installer package to be installed by clients? >>> >>> what is an MSI? >>> >>> >>> Microsoft installer, a packaging for windows-based software that allows >>> installation of the software on a windows machine: creation of registry >>> keys, Start menu items, looking for previous installations of the >>> software and upgrading it, etc. >>> >>> >>> > I would particularly like to know the tool that was used to >>> create the MSI. >>> >>> Do you mean installing a Pharo App? >>> What means installing? >>> >>> >>> So, it would mean that Pharo app is installed on a client machine: >>> creating directory hierarchy, placing image and vm files and any scripts >>> that come with the image, and creating windows shortcuts. For the time, >>> its a question from a client so I thought someone might have some >>> relevant exp. >>> >>> >>> Because if you ship an image in essence: >>> you ship one image >>> with an opening image saying installingâ¦. >>> then you save >>> >>> >>> >>> > >>> > regards, >>> > >>> > Usman Bhatti >>> >>> >>> >>> >> >> >> >

Aug. 29, 2013

Re: [Pharo-users] voyage/mongo randomly wrong OIDs

by jan.struz

Hi, feel free to use & integrate the following fix: Fix-Mongo-OID.cs <http://forum.world.st/file/n4705616/Fix-Mongo-OID.cs> Jan Sabine KnÃ¶fel wrote > Hi Esteban, All, > > I was proceeding to seach for the reason of the problem I described > yesterday. > > I added some debugging code into VOMongoSerializer>>ensurePersisted: and > the problem I described, did NOT occur. > > That made the whole process slower...and I had an idea.... > > I was looking into >>UUIDGenerator default makeSeed. > Then I tried the following code: > > |theOld theNew| > > 100000000 timesRepeat: [ > theNew := UUIDGenerator default makeSeed. > theNew = theOld ifTrue: [self halt]. > theOld := theNew] > > The debugger came up! Doesn't that mean that, if the code is run very > fast, there are double OIDs generated?! > > In my case, the objects for country and currency are very lightweight and > so, they are created very fast. Also, the error occured much more often > within my fast production EC2 instance as at my (old and slow) development > pc. > > Important: I work with windows and so >>makeUnixSeed returns nil... :-) > > What is your opinion about that? > > Sabine ----- Save The World! -- View this message in context: http://forum.world.st/voyage-mongo-randomly-wrong-OIDs-tp4705396p4705619.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Aug. 29, 2013

Re: [Pharo-users] voyage/mongo randomly wrong OIDs

by Sabine KnÃ¶fel

Hi Esteban, All, I was proceeding to seach for the reason of the problem I described yesterday. I added some debugging code into VOMongoSerializer>>ensurePersisted: and the problem I described, did NOT occur. That made the whole process slower...and I had an idea.... I was looking into >>UUIDGenerator default makeSeed. Then I tried the following code: |theOld theNew| 100000000 timesRepeat: [ theNew := UUIDGenerator default makeSeed. theNew = theOld ifTrue: [self halt]. theOld := theNew] The debugger came up! Doesn't that mean that, if the code is run very fast, there are double OIDs generated?! In my case, the objects for country and currency are very lightweight and so, they are created very fast. Also, the error occured much more often within my fast production EC2 instance as at my (old and slow) development pc. Important: I work with windows and so >>makeUnixSeed returns nil... :-) What is your opinion about that? Sabine -- View this message in context: http://forum.world.st/voyage-mongo-randomly-wrong-OIDs-tp4705396p4705603.ht… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Aug. 29, 2013

SmalltalkHub markdown preview annoyance when testing URL links

by btc＠openinworld.com

I'm just starting to use SmalltalkHub (and it is very slick) but I bumped into something particularly annoying. When creating a project, the Description field has a preview link (which is cool that I can view my markdown, thankyou). Within this preview, test clicking a URL link replaces the original SmalltalkHub page and clicking back presents me with a blank 'Create new project page'. Arrgh! It easy to avoid doing this a second time, so for me its a low priority, but just reporting it something to add to the todo. The less surprises the better for newcomers. I am surprised I hadn't seen anyone mention it previously. Is there an issue tracker for SmalltalkHub somewhere that I missed? cheers, Ben

Aug. 29, 2013

Re: [Pharo-users] Whole class hierarchy in System Browser

by Esteban A. Maringolo

2013/8/28 Damien Cassou <damien.cassou(a)gmail.com>: > > On Wed, Aug 28, 2013 at 12:29 AM, Esteban A. Maringolo > <emaringolo(a)gmail.com> wrote: >> >> >> Is there a way I can browse the whole class hierarchy in the >> SystemBrowser? >> I mean, a big tree with Object (or ProtoObject as its root) without having >> to filter branches it by categories. > why are you using the SystemBrowser? Which version of Pharo are you using? I click in the world morph, and the menu says "System Browser". It open Nautilus though. The version is: Pharo2.0 of 7 March 2013 update 20600 > in Nautilus, browse to the Object class, and click "hierarchy". It does what I want. I mean, I can see the whole hierarchy. But isn't this procedure more like a workaround? I mean... 1. Find Class 2. Type Object 3. Click Hierarchy And that wouldn't be too bad, but... 4. ...as soon as I click in another class name (outside of the Kernel-Objects category, grayed) it takes A LOT(*) to switch to the selected class. (*) In terms of responsiveness, compared to switching to another class in the same category which is slick. >> I have two groups of categories (one starting with T and the other one >> with >> G) and the names are too separated in the list. Clicking back and forth is >> a >> real hassle. > In Nautilus, you have two options: > - to get 1 browser for T* and 1 for G*: select all packages starting with > T, right click, and select "browse scoped". Do the same with packages > starting with G > > - to get 1 browser for both T* and G*: select all packages starting with T, > right click, "Add in group...", "create group", give it a name. Select all > packages starting with G, right click, "Add in group...", select the group > you created. The groups options is the closest I found to what I wanted. Thank you! It needs maintenance though, everytime I add a class It must be added to the group. Am I asking for something too esoteric? I worked long time with other Smalltalk dialects and it takes a while to get used to each one ergonomy and tools, but the class browser/system browser is, usually, the most straightforward tool in the environment. Does exist a "best practices" guide for Pharo? Thank you again!

Aug. 28, 2013

Re: [Pharo-users] Ph.D. Student Position on Dynamic Reflectiv I aze Language Integration with FPGAs for Robotic Applications

by Raymond Brinzer

Lxl On Jul 11, 2013 4:53 PM, "jannik.laval" <jannik.laval(a)gmail.com> wrote: > Dear Smalltalkers, > We are searching for a PhD Student. Following you will find the proposal. > > Best regards, > > ====== > *Location*: Mines de Douai and ENSTA Brest (France) > > *Advisor and contacts*: > Noury Bouraqadi, Luc Fabresse, Jannik Laval (car(a)mines-douai.fr, website: > http://car.mines-douai.fr/) > LoÃ¯c Lagadec (loic.lagadec(a)ensta-bretagne.fr) > > *Profile*: the candidate must hold a recent Master of Science degree in > Computer Science or Software Engineering and must have solid skills in > dynamic reflective language and OOP. > > *Description of the work*: > The goal of this PhD is to study Smalltalk integration with FPGAs for > robotic applications. This integration will enable us get the best from > both worlds. Developers are provided with a high-level dynamic reflective > language (Smalltalk) for building and debugging their applications. Still, > we can have high performances by projecting part of the programs into > FPGAs. These reconfigurable hardware chips can achieve performance faster > than C programs, while consuming much less energy. > > The work to do can decompose into the following tasks: > -Build reference robotic applications fully in Pharo Smalltalk using > actual robots (see http://car.mines-douai.fr/robots/) > -Analyze these applications to identify critical parts to project on FPGAs > to significantly increase performances (speed, energy) > -Do the actual projection to FPGA and evaluate performances of the > transformed applications > -Generalize the approach and define a methodology for turning Smalltalk > code into FPGA > -Propose a solution to automate the methodology > > The Ph.D student will receive a grant which net amount is approximately > 1420 euros per month for 3 years (36 months). > He will be co-supervised by LoÃ¯c Lagadec from the ENSTA-Bretagne > (Lab-STICC, Brest) and Jannik Laval, Luc Fabresse and Noury Bouraqadi from > Ecole des Mines de Douai (CAR, http://car.mines-douai.fr/) > The first 18th month will be spent in Douai (Lille area), while the last > half of the PhD will be spent in Brest. > However, during the full 3 years, there will be a strong interaction with > co-supervisers from both labs. > > *Bibliography*: > -A Robust Layered Control System For A Mobile Robot. R. Brooks. IEEE > Journal of Robotics and Automation. Vol. 2. Num 1. March, 1985. > -RCS: A Cognitive Architecture for Intelligent MultiAgent Systems. J.S. > Albus and A. J. Barbera. Proceedings of the 5th IFAC/EURON Symposium on > Intelligent Autonomous Vehicles (IAV 2004). Lisbon, Portugal, 2004. > -Handbook of Robotics. Bruno Siciliano and Oussama Khatib editors. > Springer. 2008. > -Multi-Level Simulation of Heterogeneous Reconfigurable Platforms. D. > Picard and L. Lagadec. International Journal of Reconfigurable Computing. > 2012. > -High-level synthesis for FPGAs: From Prototyping to Deployment. Jason > cong and stephen neuendorffer and juanjo noguera and kees vissers and zhiru > zhang. IEEE Transactions on Computer-aided design of integrated circuits > and systems. Vol. 30. Num 4. April, 2011. > -The MOLEN Polymorphic Processor. S. Vassiliadis and S. Wong and G. > Gaydadjiev and K. Bertels and G. Kuzmanov and E. Moscu Panainte. IEEE > Transactions on Computers. 2004. > > > _______________________________________________________ > > Jannik LAVAL > Enseignant-Chercheur > TÃ©l. : 03 27 71 26 32 > > Mines Douai > 941 rue Charles Bourseul > BP 10838 > 59508 Douai Cedex > _______________________________________________________ > >

Aug. 28, 2013

voyage/mongo randomly wrong OIDs

by Sabine KnÃ¶fel

Hi, I have a strange problem and before searching for more hours, I want to ask, if this problem is known. If not, I will proceed by myself ;-) Background: I write currencies and countries into mongo with voyage. For database creation, first I create all currencies and countries of the world in the image. One Country has N currencies and one Currency has N countries. After creating the model objects in the image, I save them to mongo with voyage then. Problem: Here something strange happens. SOMETIMES, the OID to the Currencies collection is wrong! It is the OID of the object itself (the country). Please see the example of UnitedArabEmirates below to understand what I mean. The OID of the country UAE is the same as the pointer to the currency(!). But in the model objects in my image, the inst var currencies was NOT pointing to the country itself but to the currency. { "#version": NumberInt(466896549), "_id": ObjectId("a5466c0b0000000000000000"), "countryName": "labelCountryUnitedArabEmirates", "currencies": { "0": { "#collection": "Currencies", "__id": ObjectId("a5466c0b0000000000000000") } }, "iso3166": "ARE" } this is an example of a country which is correct. { "#version": NumberInt(228627064), "_id": ObjectId("b7956c0b0000000000000000"), "countryName": "labelCountryArgentina", "currencies": { "0": { "#collection": "Currencies", "__id": ObjectId("77926c0b0000000000000000") } }, "iso3166": "ARG" } The important point is: this happens randomly. I take the one fresh loaded image, create the objects into the database and close the image without saving. The next time, other countries are wrong. If I delete the wrong objects from the database and re-create them, they are correct. I was trying to save the objects with delays but this did noch change anyting. I want to find out, what the reason for that is and ask you if you had similar problems or if this is a known bug.... any hint appreciated. Sabine -- View this message in context: http://forum.world.st/voyage-mongo-randomly-wrong-OIDs-tp4705396.html Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Aug. 28, 2013

Re: [Pharo-users] MSI packaging for Pharo

by Usman Bhatti

Tx all. That's some useful information. As my requirement is a MSI file, I'll try to use WIX or MSI wrapper. I'll let you know how my experience goes. regards, Usman On Tue, Aug 27, 2013 at 10:34 AM, phil(a)highoctane.be <phil(a)highoctane.be>wrote: > You can also use Inno Setup which is nice, easy, and free. > > http://www.jrsoftware.org/isinfo.php#features > > But ok, it doesn't do MSI. > > http://stackoverflow.com/questions/6245260/installers-wix-or-inno-setup > > But you can get around that with http://www.exemsi.com/inno-setup-and-msi > > Good luck. > > Phil > > > > > > On Tue, Aug 27, 2013 at 7:27 AM, HernÃ¡n Morales Durand < > hernan.morales(a)gmail.com> wrote: > >> I have never tried but it seems you can wrap installer in MSI files using >> WiX http://wixtoolset.org/ and this package http://www.exemsi.com/ >> >> To write the installer check this out: >> >> http://code.google.com/p/**biosmalltalk/wiki/**NSISInstallerScript<http://code.google.com/p/biosmalltalk/wiki/NSISInstallerScript> >> >> HernÃ¡n >> >> El 26/08/2013 17:29, Usman Bhatti escribiÃ³: >> >>> On Mon, Aug 26, 2013 at 7:10 PM, StÃ©phane Ducasse >>> <stephane.ducasse(a)inria.fr <mailto:stephane.ducasse@**inria.fr<stephane.ducasse(a)inria.fr>>> >>> wrote: >>> >>> >>> >>> > Hello, >>> > >>> > Does anyone have experience of distributing Pharo-based software >>> as an MSI installer package to be installed by clients? >>> >>> what is an MSI? >>> >>> >>> Microsoft installer, a packaging for windows-based software that allows >>> installation of the software on a windows machine: creation of registry >>> keys, Start menu items, looking for previous installations of the >>> software and upgrading it, etc. >>> >>> >>> > I would particularly like to know the tool that was used to >>> create the MSI. >>> >>> Do you mean installing a Pharo App? >>> What means installing? >>> >>> >>> So, it would mean that Pharo app is installed on a client machine: >>> creating directory hierarchy, placing image and vm files and any scripts >>> that come with the image, and creating windows shortcuts. For the time, >>> its a question from a client so I thought someone might have some >>> relevant exp. >>> >>> >>> Because if you ship an image in essence: >>> you ship one image >>> with an opening image saying installingâ¦. >>> then you save >>> >>> >>> >>> > >>> > regards, >>> > >>> > Usman Bhatti >>> >>> >>> >>> >> >> >> >

Aug. 28, 2013