January 2024 - Pharo-users - lists.pharo.org

This week (51/2023) on the Pharo Issue Tracker

by Marcus Denker

A little bit late... # Features - Implements hierarchical senders system command #15822 https://github.com/pharo-project/pharo/pull/15822 - Shuffle tests #15581 https://github.com/pharo-project/pharo/pull/15581 # Fixes - 15801-Cmd-B-on-Transcript-raises-an-error #15802 https://github.com/pharo-project/pharo/pull/15802 - 15798-Compiler-error-when-iteration-step-is-nil #15803 https://github.com/pharo-project/pharo/pull/15803 - Fix for Calypso discard code with error and prevent to fix it #15834 https://github.com/pharo-project/pharo/pull/15834 - Make TraitedClass part of the trait composition of TraitedMetaclasses #15833 https://github.com/pharo-project/pharo/pull/15833 - Display trait icon in Calypso class definition editor #15828 https://github.com/pharo-project/pharo/pull/15828 - fix some button orders #15820 https://github.com/pharo-project/pharo/pull/15820 - Prevent logging exceptions twice when debugger is opened #15746 https://github.com/pharo-project/pharo/pull/15746 # Variables - Undeclared: inlining of declare:from: #15827 https://github.com/pharo-project/pharo/pull/15827 - UndeclaredVariable read/write: context as argument #15821 https://github.com/pharo-project/pharo/pull/15821 - #usingClasses for the Slot Hierachy #15815 https://github.com/pharo-project/pharo/pull/15815 # Refactoring Engine - Position temp definition before first occurrence of extracted expression, and always in outer scope (fixes #14611) #15781 https://github.com/pharo-project/pharo/pull/15781 - Fix rename refactoring call to support class methods. #15816 https://github.com/pharo-project/pharo/pull/15816 - Enh/refactoring pass over rename driver and tests #15808 https://github.com/pharo-project/pharo/pull/15808 # Tests - Shuffle tests #15581 https://github.com/pharo-project/pharo/pull/15581 - New source code command for running current test #15832 https://github.com/pharo-project/pharo/pull/15832 - Fix shuffle seed printing #15831 https://github.com/pharo-project/pharo/pull/15831 # Cleanup - Unify packaging of Announcement>>#affects* #15734 https://github.com/pharo-project/pharo/pull/15734 - Remove ChangeSet #15794 https://github.com/pharo-project/pharo/pull/15794 - (Re)Moved ProfilerUI package #15797 https://github.com/pharo-project/pharo/pull/15797 - Fix a few reflection: pragmas #15812 https://github.com/pharo-project/pharo/pull/15812 - fix a method that has a wrong category #15814 https://github.com/pharo-project/pharo/pull/15814 - Cleanup notNil to isNotNil in AST-CORE #15840 https://github.com/pharo-project/pharo/pull/15840

Jan. 23, 2024

Re: Backing up data

by Stewart MacLean

Hi Sergio, I have used Fuel to good effect to store a tree of objects (with all interlinkages). Saving: saveTo: aFileOrName | aFileName | aFileName := aFileOrName fullName. FLSerializer serialize: self toFileNamed: aFileName Loading: loadFrom: aFileOrFileName | new | new := FLMaterializer materializeFromFileNamed: aFileOrFileName fullName. new ifNil: [^nil]. "becomeForward fails for nil!" self becomeForward: new Just make sure you don't have any references to objects outside of your model tree - you'll disappear down a black hole as it tries to save the whole image! Cheers, Stew On Thu, Jan 18, 2024 at 5:48â¯PM sergio ruiz <sergio.rrd(a)gmail.com> wrote: > I have been in the relational database world for decades. One of the > things that is super simple is backing up and restoring data. > > Sometimes, it makes it makes sense to pull the production data into > development. In the case of a catastrophe, itâs super simple to restore > data from a backup. > > I am thinking of backup strategies for my data once again, and am > wondering if things have changed since I was last using smalltalk. > > I am thinking of the following: > > STON > I could dump all of my data into STON, but there is one slight twist. In > this project, itâs just making a list of movie listings. There are three > basic classes: Theater, Movie, Event. Each of these classes stores an > OrderedCollection of items of that type on a class variable, as Iâll need > to access each on their own.. so, if an event has a theater, Iâll need to > access Theaters on their own, and Movies on their own. > > So, I would have to rebuild the list of Theaters from the Theaters in each > event. Otherwise, I would lose the link between the Theaters on the Theater > class variable and the Theater in the Event instance. > > Am I thinking about this incorrectly? > > Gemstones > I am totally into the idea of using gemstones. Is there a backup and > restore for objects here? do the relationships remain? > > Voyage > This seems like a good solution, but I would rather stay in the smalltalk > object store. > > Ideas? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: > https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 > >

Jan. 21, 2024

Re: Backing up data

by Yanni Chiu

Hi Sergio, I added a Movies demo, using a Soil database. There was a previous Accounting demo that had two versions (in memory database and Soil database) from which I based the new demo. I like the Movie demo because it is simple yet complex enough. I suspect the Accounting demo is too complicated to grasp as a first encounter. Iâm going to use the Movie demo for a presentation, so itâll continue to be tweaked. Mainly, Iâll be adding a way to use SoilTransaction with #commit, instead of #checkpointAndContinue. The code is at: [image: Seaside-Quasar.png] yannij/Seaside-Quasar: Pharo/Smalltalk code to use Quasar Framework in Seaside. Also, some demo apps using Magritte are provided. <https://github.com/yannij/Seaside-Quasar> github.com <https://github.com/yannij/Seaside-Quasar> Cheers, Yanni On Thu, Jan 18, 2024 at 11:11 AM sergio ruiz <sergio.rrd(a)gmail.com> wrote: > > [â¦] > > In the end, Iâll end up with: > > - an application of some sort that scratches my own itch > - a pile of articles outlining how i designed the tool set for the > application. > > and in reality, itâs gonna be thinly veiled Smalltalk evangelism. >

Jan. 20, 2024

Re: Backing up data

by Offray Vladimir Luna CÃ¡rdenas

Sergio, I would go with STON, as advised by Norbert (I don't have experience with Soil). One of the nice things of STON is that you can use whatever DVCS you like to versionate your data. For example, we locally use Fossil, while most people prefer Git. STON is super versatile! As an example, I used it with Grafoscopio, my Pharo powered interactive outliner/documenter, to store notebooks with Markdown stored inside STON, as you can see in [1]. And now I flipped that idea and I'm using STON to embed notebooks metadata inside Markdeep. In this way anyone can read notebooks directly in the web, without specialized software. [1a] is just the same document in [1] but with this flipped format idea (if you,re even more curious, look at the source code of the page at [1a] and youÂ will find that the STON representation of notebook cell/node medatada is pretty light and readable). [1] https://mutabit.com/repos.fossil/indieweb/file?name=indieweb.ston&ci=tip [1a] https://mutabit.com/repos.fossil/indieweb/doc/tip/indie-web--25zqu.md.html This is just an example of how STON allowed us to port lessonsÂ learned from Grafoscopio, made in 2016, to Lepiter, released in 2021, ensuring longevity of our community memory and data. Hopefully you will find STON pretty empowering in your own experiments. Cheers, Offray On 18/01/24 9:37, Norbert Hartl wrote: > > >> Am 18.01.2024 um 14:54 schrieb sergio ruiz <sergio.rrd(a)gmail.com>: >> >> Using this Will my links remain viable using this method? >> >> Meaning that an event has a theater. That theater is also in the >> OrderedCollection of Theaters. >> >> If the name of he theater changed in the Theaters collection, will >> that name change occur in the event theater object? >> >> After bringing these collections back in via STON, will all of these >> relationships remain intact? > > If with relationship you mean that one object event has a reference to > a theater object then yes. STON serializes the graph as objects and > all references will be reestablished on materialization. > > Norbert >> >> >> >>> On Jan 18, 2024, at 8:26â¯AM, Norbert Hartl <norbert(a)hartl.name> wrote: >>> >>> If you have three classes with class side collections you can have a >>> make e.g. a dictionary and put the collections from the class side >>> into it like >>> >>> model := { >>> Â #theaters -> Theater instances. >>> Â #movies -> Movie instances. >>> Â #event -> Event instances. >>> } asDictionary. >>> >> >> >> ---- >> peace, >> sergio >> photographer, journalist,Â visionary >> >> Public Key: >> https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 >> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV >> @sergio_101@mastodon.social >> https://sergio101.com >> http://www.codeandmusic.com >> http://www.twitter.com/sergio_101 >> http://www.facebook.com/sergio101 >> >

Jan. 20, 2024

Re: [Pharo-dev] [ANN] New Success Story posted

by Aik-Siong Koh

Was the migration from Java to Angular Typescript? Moose and Pharo were just tools for the migration between Java and Typescript? Thanks Aik-Siong Koh Marcus Denker wrote: > There is a new âSuccess Storyâ posted on pharo.org <http://pharo.org/>: > > > Casino - Revolutionizing Application Migration for Berger-Levrault > https://www.pharo.org/success/BergerLevrault-Casino.html > > > If you have an idea for something like that, you can do PRs for the site here: > https://github.com/pharo-project/pharo-website >

Jan. 20, 2024

Re: Git Repositories browser vs. monticello

by sergio ruiz

Perfect. I will be open sourcing all of my source code, so this will make it easier. Thanks! > On Jan 19, 2024, at 11:20â¯AM, Cyril FERLICOT-DELBECQUE via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Iceberg is indeed to Git Browser. The menu was updated to be more user friendly because Iceberg is a little cryptic for people new to recent versions of Pharo or to Pharo itself. ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 19, 2024

Re: Git Repositories browser vs. monticello

by Cyril FERLICOT-DELBECQUE

Hi, Iceberg is indeed to Git Browser. The menu was updated to be more user friendly because Iceberg is a little cryptic for people new to recent versions of Pharo or to Pharo itself. Git is the primary SCM for a few years now. In Pharo 12 most of the UI of Monticello is been removed because it is hard to maintain two SCM like this in Pharo. But it is still possible to load monticello code. -- Cyril Ferlicot-Delbecquehttps://ferlicot.fr On Friday, January 19th, 2024 at 4:36 PM, sergio ruiz <sergio.rrd(a)gmail.com> wrote: > In the workspace, I see that Git Repositories browser if the first selection, and Monicello is marked as legacy. > > The last time I was using Pharo, I think the Git browser was called âIceberg.â > > Are these the same thing? > > Have we now made the move to Git as our primary SCM? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101

Jan. 19, 2024

Git Repositories browser vs. monticello

by sergio ruiz

In the workspace, I see that Git Repositories browser if the first selection, and Monicello is marked as legacy. The last time I was using Pharo, I think the Git browser was called âIceberg.â Are these the same thing? Have we now made the move to Git as our primary SCM? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 19, 2024

[ANN] New Success Story posted

by Marcus Denker

There is a new âSuccess Storyâ posted on pharo.org <http://pharo.org/>: Casino - Revolutionizing Application Migration for Berger-Levrault https://www.pharo.org/success/BergerLevrault-Casino.html If you have an idea for something like that, you can do PRs for the site here: https://github.com/pharo-project/pharo-website

Jan. 19, 2024

Pharo on Raspberry Pi in 2024

by Rob van Lopik

With the new Raspberry Pi 5 (8Gb) I finally got hold of, and the new Raspberry OS (Bookworm 12), I thought it was time to try Pharo again (see Pharo issue #11841 by @astares). I used zero-config with version specification, like 'get.pharo.org/100+vm'. (On pharo.org there are no OBS packages for Bookworm). Using Raspberry Imager I put 64-bits Bookworm on the Pi5. The installs for Pharo 9, 10 and 11 worked OK. Pharo12 does not work because files.pharo.org/get-files/120 does not contain an aarch64-vm. The P12 image does work with the VM downloaded for P11. UI performance is excellent. Next I tried 32-bits Bookworm (Raspberry OS 12) on the Pi5. As there are no recent 32-bits Pharo images (issue #12769) I only tried P9 and P10. Directly using zero-config loads 64-bit Pharo and even explicitly specifying 32-bit (through 'get.pharo.org/32/90+vm') results in a 64-bit download. The reason is, that the Pi loads a 64-bit kernel even when the OS itself is 32-bits. This means the command 'uname -m' that is used by zero-config, returns 'aarch64' instead of 'armv7l'. I will report this on the zero config repo. So I downloaded and unzipped manually.. Pharo 9 works fine. The Pharo 10 image misses Playground in the menu, but ctrl+O+W works. On a Pi 4 (8Gb RAM) with 64-bits Bookworm Pharo 10 is OK. Pharo 11 (with VM 10.0.5 2023-05-05) gives an error: '[ERROR] 2024-01-16 21:37:55.000 sqAllocateMemory (src/memoryUnix.c:160):I cannot find a good memory address starting from: 0x10000000000'. With 32-bits Bookworms it behaves the same as the Pi (i.e. it also loads a 64 bits kernel) Next I tried the same on a Raspberry Pi 3B+ (1Gb memory). For 64-bits the Raspberry Imager default to the Bullseye version (11) . Pharo 10 and 11 complain about a wrong libc.so version and don't work. Using Bookworm ( 64-bit) Pharo 10 runs OK . Pharo 11 does not work, with the same error as on the Pi4 Last I tried the Raspberry Pi Zero 2W (512 Mb RAM, but only â¬20!). First 32-bits Bookworm. Pharo9 works. Pharo10 also with the incomplete latest image. 64-bits Bookworm seems a bit heavy for this board, but it works. Pharo10 runs, more or less. Maybe headless would be quite useful. Pharo11 gives the same memory allocation error as on the Pi 4 and 3B+ Summary: - On the Pi 5 all Pharo 64 bits versions work - On other Pi's only version 9 and 10 work. Pharo11 has a memory allocation error. - Recent 32-bits Pharo images are lacking; especially for the cheap Pi Zero I would really like to see whether 32-bits is more usable.

Jan. 19, 2024

This week (03/2024) on the Pharo Issue Tracker

by Marcus Denker

After a holiday break, we resume the weekly issue tracker report # Pharo 11 - Extend FFIExternalStructureReferenceHandle with tfPointerAddress #15951 https://github.com/pharo-project/pharo/pull/15951 # Bugs - Fix bug in integer vs float comparisons #15973 https://github.com/pharo-project/pharo/pull/15973 - adding back millisecondsToRun: but we will deprecate it. #15969 https://github.com/pharo-project/pharo/pull/15969 # Refactoring Engine - Fix: instance and shared variables driver bugs #15983 https://github.com/pharo-project/pharo/pull/15983 - Fix: cannot move method to class side #15981 https://github.com/pharo-project/pharo/pull/15981 - Adding documentation on the rewrite rules #15966 https://github.com/pharo-project/pharo/pull/15966 - Make insert superclass and subclass working again #15957 https://github.com/pharo-project/pharo/pull/15957 - Add rb to any rb entity printString! Green tests #15959 https://github.com/pharo-project/pharo/pull/15959 - Refactor: pass on refactoring preconditions #15954 https://github.com/pharo-project/pharo/pull/15954 # Metacello Cleanup - Clean(Gofer, Metacello): remove junk and old/unused repositories. #15968 https://github.com/pharo-project/pharo/pull/15968 # Rules / Code Critic - Improve ReMultiplePeriodsTerminatingStatementRule #15956 https://github.com/pharo-project/pharo/pull/15956 - Add release test for ReDoNotSendSuperInitializeInClassSideRule #15972 https://github.com/pharo-project/pharo/pull/15972

Jan. 19, 2024

Re: Backing up data

by sergio ruiz

The idea is, I have been a software engineer for the past three decades. I REALLY love my profession (even though now, itâs pretty much sitting in meetings all day), but I love it. I have a few projects I always wanted to do, because I just want to do them because they are useful to me. I have architected and coded hundreds of giant projects. At this point, building anything with the big web frameworks just seems exhausting. I have decided to bring each of these pet projects to fruition and then document how and why i made each decision. Every project will be using smalltalk as the data store. If the project is a website, I will use seaside as the web framework. Otherwise, Iâll use the teapot as an API interface. The series of articles I will write will be aimed at people in my position. People who are familiar with software development, and would like to read about it at a higher than tutorial level. In the end, Iâll end up with: - an application of some sort that scratches my own itch - a pile of articles outlining how i designed the tool set for the application. and in reality, itâs gonna be thinly veiled Smalltalk evangelism. But i think it might be worthwhile to talk about this stuff in a pubilc platform. > On Jan 18, 2024, at 10:34â¯AM, Yanni Chiu <yannix7db(a)gmail.com> wrote: > > Can you sketch out the complexity aspects of your five projects? Is this all for learning, or are they âproductionâ applications? Do you want to gain experience with different ways to persist data, or are you just thinking that you have to use different ways due to project complexity? It might be ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Backing up data

by Yanni Chiu

Can you sketch out the complexity aspects of your five projects? Is this all for learning, or are they âproductionâ applications? Do you want to gain experience with different ways to persist data, or are you just thinking that you have to use different ways due to project complexity? It might be that Soil database could handle all your use cases, so you could avoid working through a bunch of databases, unless you want to. On Thu, Jan 18, 2024 at 8:56 AM sergio ruiz <sergio.rrd(a)gmail.com> wrote: > I figured Gemstones would be SUPER heavy handed for this application, but > I have a list of five projects, each increasing in complexity that I want > to launch and document. So, sooner or later, I will need a more robust > solution. > > Thanks! > > > > On Jan 18, 2024, at 8:26â¯AM, Norbert Hartl <norbert(a)hartl.name> wrote: > > GemStone is a huge thing to tame. I would not say the above and GemStone > are alternatives. GemStone is a lot to install and learn but you get > something that makes it hard to corrupt your data. So you have requirements > that make it fit into GemStone or you have requirements that make it a fit > for STON. Between both there is no overlap but rather a huge gap between > the applicability of each. > > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: > https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 > >

Jan. 18, 2024

Re: Backing up data

by Norbert Hartl

> Am 18.01.2024 um 14:54 schrieb sergio ruiz <sergio.rrd(a)gmail.com>: > > Using this Will my links remain viable using this method? > > Meaning that an event has a theater. That theater is also in the OrderedCollection of Theaters. > > If the name of he theater changed in the Theaters collection, will that name change occur in the event theater object? > > After bringing these collections back in via STON, will all of these relationships remain intact? If with relationship you mean that one object event has a reference to a theater object then yes. STON serializes the graph as objects and all references will be reestablished on materialization. Norbert > > > >> On Jan 18, 2024, at 8:26â¯AM, Norbert Hartl <norbert(a)hartl.name> wrote: >> >> If you have three classes with class side collections you can have a make e.g. a dictionary and put the collections from the class side into it like >> >> model := { >> #theaters -> Theater instances. >> #movies -> Movie instances. >> #event -> Event instances. >> } asDictionary. >> > > > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Jan. 18, 2024

Re: Backing up data

by sergio ruiz

I figured Gemstones would be SUPER heavy handed for this application, but I have a list of five projects, each increasing in complexity that I want to launch and document. So, sooner or later, I will need a more robust solution. Thanks! > On Jan 18, 2024, at 8:26â¯AM, Norbert Hartl <norbert(a)hartl.name> wrote: > > GemStone is a huge thing to tame. I would not say the above and GemStone are alternatives. GemStone is a lot to install and learn but you get something that makes it hard to corrupt your data. So you have requirements that make it fit into GemStone or you have requirements that make it a fit for STON. Between both there is no overlap but rather a huge gap between the applicability of each. ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Backing up data

by sergio ruiz

Using this Will my links remain viable using this method? Meaning that an event has a theater. That theater is also in the OrderedCollection of Theaters. If the name of he theater changed in the Theaters collection, will that name change occur in the event theater object? After bringing these collections back in via STON, will all of these relationships remain intact? > On Jan 18, 2024, at 8:26â¯AM, Norbert Hartl <norbert(a)hartl.name> wrote: > > If you have three classes with class side collections you can have a make e.g. a dictionary and put the collections from the class side into it like > > model := { > #theaters -> Theater instances. > #movies -> Movie instances. > #event -> Event instances. > } asDictionary. > ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Backing up data

by sergio ruiz

OOH.. I like this idea. Iâll do a quick test on this and see if it works as expected.. For now, I want to store the data in the image. The trick is, I like to start with a fresh image every few days. So, Iâd like to open a new Pharo, pull the source code, then pull the data. Thanks! > > If you are keeping data in a Pharo image then you could just save the image instead of using STON. Alternatively, you could model your data in an Application class with three instance variables: theaters, movies, and events. Then you could dump the root application object and STON should preserve the relationships (I expect). I prefer this model since it allows me to create a test object that encapsulates all the data in one place (even if it is referenced from a class variable). ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Backing up data

by Norbert Hartl

I think it depends how many objects you have and what your consistency requirements are. > Am 18.01.2024 um 05:48 schrieb sergio ruiz <sergio.rrd(a)gmail.com>: > > I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. > > Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. > > I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. > > I am thinking of the following: > > STON > I could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. > > So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. > Am I thinking about this incorrectly? If you have three classes with class side collections you can have a make e.g. a dictionary and put the collections from the class side into it like model := { #theaters -> Theater instances. #movies -> Movie instances. #event -> Event instances. } asDictionary. The model object you can use with STON or fuel to store it and on reading back you store each of the values back on the class side variable. Simple and nice. I would use STON for that because it is equivalent to fuel but fuel has migration problems. Or better you need to load all your data, update fuel to a newer version and write it again with the new fuel version. STON is more reliable in that regard. Both have the problem that when objects change during serialization you might corrupt the structure of your data, > > Gemstones > I am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? > GemStone is a huge thing to tame. I would not say the above and GemStone are alternatives. GemStone is a lot to install and learn but you get something that makes it hard to corrupt your data. So you have requirements that make it fit into GemStone or you have requirements that make it a fit for STON. Between both there is no overlap but rather a huge gap between the applicability of each. > Voyage > This seems like a good solution, but I would rather stay in the smalltalk object store. > Absolutely. Voyage is good for some use cases but you have to deal with mongoDB (not sure the small libraries work right now) You could also consider using soil (https://github.com/ApptiveGrid/Soil) I might be a bit biased here :) but for most use cases this is the best of all the worlds described aboved. Even if there it has no release yet (coming soon) it is quite stable. Hope this helps, Norbert > Ideas? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Jan. 18, 2024

Re: FUEL version migration

by Davide Varvello

Solved! See the solution for FUEL migration issues here:Â https://github.com/theseion/Fuel/issues/289#issuecomment-1896454432 CheersDavide On Monday, January 15, 2024 at 07:48:47 PM GMT+1, Davide Varvello via Pharo-users <pharo-users(a)lists.pharo.org> wrote: Hi Guys,How can I migrate from Fuel version 3.0.2 to the latest one? This:Â https://theseion.github.io/Fuel/format-migration/Â seems osbolete TIA Davide

Jan. 18, 2024

Re: Backing up data

by Davide Varvello

+1 for Fuel, see hereÂ https://github.com/theseion/Fuel CheersDavide On Thursday, January 18, 2024 at 09:37:21 AM GMT+1, Todd Blanchard via Pharo-users <pharo-users(a)lists.pharo.org> wrote: You want to look at Fuel, a serialization library. Sent from my iPhone On Jan 17, 2024, at 9:49 PM, sergio ruiz <sergio.rrd(a)gmail.com> wrote: ï»¿ I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. I am thinking of the following: STONI could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. Am I thinking about this incorrectly? GemstonesI am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? VoyageThis seems like a good solution, but I would rather stay in the smalltalk object store. Ideas? Thanks! ---- peace, sergio photographer, journalist,Â visionary Public Key:Â https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV@sergio_101@mastodon.socialhttps://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Backing up data

by Todd Blanchard

You want to look at Fuel, a serialization library. Sent from my iPhone > On Jan 17, 2024, at 9:49 PM, sergio ruiz <sergio.rrd(a)gmail.com> wrote: > > ï»¿I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. > > Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. > > I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. > > I am thinking of the following: > > STON > I could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. > > So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. > > Am I thinking about this incorrectly? > > Gemstones > I am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? > > Voyage > This seems like a good solution, but I would rather stay in the smalltalk object store. > > Ideas? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Jan. 18, 2024

Re: Backing up data

by James Foster

Sergio, If you are keeping data in a Pharo image then you could just save the image instead of using STON. Alternatively, you could model your data in an Application class with three instance variables: theaters, movies, and events. Then you could dump the root application object and STON should preserve the relationships (I expect). I prefer this model since it allows me to create a test object that encapsulates all the data in one place (even if it is referenced from a class variable). For GemStone, execute `SystemRepository fullBackupGzCompressedTo: aFilePath` (see details at https://downloads.gemtalksystems.com/docs/GemStone64/3.7.x/GS64-SysAdminGui…) This does a full object dump and preserves the relationship between objects. Note that GemStone also creates a transaction log so once a transaction commits, you can restore it in event of a system crash. James Foster > On Jan 17, 2024, at 8:48â¯PM, sergio ruiz <sergio.rrd(a)gmail.com> wrote: > > I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. > > Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. > > I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. > > I am thinking of the following: > > STON > I could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. > > So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. > > Am I thinking about this incorrectly? > > Gemstones > I am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? > > Voyage > This seems like a good solution, but I would rather stay in the smalltalk object store. > > Ideas? > > Thanks! > > ---- > peace, > sergio > photographer, journalist, visionary > > Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 > #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV > @sergio_101@mastodon.social > https://sergio101.com > http://www.codeandmusic.com > http://www.twitter.com/sergio_101 > http://www.facebook.com/sergio101 >

Jan. 18, 2024

Backing up data

by sergio ruiz

I have been in the relational database world for decades. One of the things that is super simple is backing up and restoring data. Sometimes, it makes it makes sense to pull the production data into development. In the case of a catastrophe, itâs super simple to restore data from a backup. I am thinking of backup strategies for my data once again, and am wondering if things have changed since I was last using smalltalk. I am thinking of the following: STON I could dump all of my data into STON, but there is one slight twist. In this project, itâs just making a list of movie listings. There are three basic classes: Theater, Movie, Event. Each of these classes stores an OrderedCollection of items of that type on a class variable, as Iâll need to access each on their own.. so, if an event has a theater, Iâll need to access Theaters on their own, and Movies on their own. So, I would have to rebuild the list of Theaters from the Theaters in each event. Otherwise, I would lose the link between the Theaters on the Theater class variable and the Theater in the Event instance. Am I thinking about this incorrectly? Gemstones I am totally into the idea of using gemstones. Is there a backup and restore for objects here? do the relationships remain? Voyage This seems like a good solution, but I would rather stay in the smalltalk object store. Ideas? Thanks! ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Troubleshooting ByteArray

by sergio ruiz

Thanks for the input everyone! I ended up just removing the compression.. In this case, this is not critical at all, so I can live with this.. Thanks, all! > On Jan 17, 2024, at 7:18â¯PM, Todd Blanchard via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > I guess Iâll point you to the issue too. > > PDFStreamPrinter>printPDFDataStream: aPDFDataStream > â¦â¦ > Line 13: (self compression) ifTrue: [ streamData := (self compressWithGZip: streamData) asByteArray ]. ---- peace, sergio photographer, journalist, visionary Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV @sergio_101@mastodon.social https://sergio101.com http://www.codeandmusic.com http://www.twitter.com/sergio_101 http://www.facebook.com/sergio101

Jan. 18, 2024

Re: Troubleshooting ByteArray

by Todd Blanchard

I guess Iâll point you to the issue too. PDFStreamPrinter>printPDFDataStream: aPDFDataStream â¦â¦ Line 13: (self compression) ifTrue: [ streamData := (self compressWithGZip: streamData) asByteArray ]. > On Jan 17, 2024, at 5:13â¯PM, Todd Blanchard via Pharo-users <pharo-users(a)lists.pharo.org> wrote: > > Try this: > > (PDFDocument new compression: false)add: (PDFPage new add: (PDFTextElement new text: 'Hello'; from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream. > > Compression causes your string to be gzipâd which is a ByteArray and not a String of any kind. > > Unfortunately, the write stream is a ZnCharacterWriteStream which is expecting some kind of String. > > This is going to take some untangling so just turn off compression (which is on by default) and it seems to work. > >> On Jan 17, 2024, at 4:43â¯PM, Richard O'Keefe <raoknz(a)gmail.com> wrote: >> >> So the method is expecting some kind of string, but it received a >> ByteArray, which is NOT any kind of string. >> What's in the ByteArray? Where did it come from? Why isn't it a string? >> >> On Thu, 18 Jan 2024 at 04:34, sergio ruiz <sergio.rrd(a)gmail.com> wrote: >>> >>> Hi, all. >>> >>> I am working on creating a PDF with Artefact (https://github.com/pharo-contributions/Artefact) and am having an issue running the first example. >>> >>> the Example looks like: >>> >>> PDFDocument new add: (PDFPage new add: (PDFTextElement new text: 'Hello'; from: 10mm@10mm)); exportTo: 'test.pdf' asFileReference writeStream. >>> >>> >>> When running this, I get the error: >>> >>> Instance of ByteArray did not understand #isByteString >>> >>> indeed, ByteArray does not have a method called isByteString. >>> >>> I have tried creating a method that returns either true or false (I tried them both), but I have not successfully built the PDF. >>> >>> The method calling isByteString looks like: >>> >>> >>> ZnUTF8Encoder >>> >>> next: count putAll: string startingAt: offset toStream: stream >>> "Write count characters from string starting at offset to stream." >>> "Overwritten for performance reasons - create a fast path for byte strings" >>> >>> string isByteString >>> ifTrue: [ self next: count putAllByteString: string startingAt: offset toStream: stream ] >>> ifFalse: [ super next: count putAll: string startingAt: offset toStream: stream ] >>> >>> I TOTALLY get this. This is a whole bunch of very specific questions. But my ultimate goal is to take a deep dive into stream processing to figure this out. >>> >>> Thanks! >>> >>> ---- >>> peace, >>> sergio >>> photographer, journalist, visionary >>> >>> Public Key: https://pgp.key-server.io/pks/lookup?op=get&search=0x69B08F58923AB3A2 >>> #BitMessage BM-NBaswViL21xqgg9STRJjaJaUoyiNe2dV >>> @sergio_101@mastodon.social >>> https://sergio101.com >>> http://www.codeandmusic.com >>> http://www.twitter.com/sergio_101 >>> http://www.facebook.com/sergio101 >>>

Jan. 18, 2024