- Pharo-users - lists.pharo.org

Re: [Pharo-users] distributed peer2peer sharing app in Pharo

by Evan Donahue

I remember looking at the project you mention when I was first researching p2p in Pharo. I thought the project description sounded very interesting (Trantor was actually begun with a similar use-case in mind), but alas I was unable to find any information on it outside of the code. If anyone knows more about what happened to that project, I'd be very curious. >From a technical standpoint, as best I could tell from looking through said code, DVG was an application that was designed to share one specific type of immutable data across very adverse network conditions. All of the engineering seemed to have gone into bypassing firewalls with UDP hole-punching, routing messages around complex network topologies, etc. Trantor, by contrast, is best thought of as a framework for easily making application data distributable, and a scheme for distributing it efficiently over a network. The details of the network topology are somewhat orthogonal, and there are many options for where to take it in the future. The actual socket code in Trantor right now is a simple TCP direct connection. At some point I'd like to get some of the networking capabilities that DVG has (such as the UDP hole-punching), and I think I saw a project that tried to extract the networking part from the DVG application, but it seems to be mostly a specific application, and not a general scheme for designing arbitrary distributed applications. -- View this message in context: http://forum.world.st/distributed-peer2peer-sharing-app-in-Pharo-tp4855144p… Sent from the Pharo Smalltalk Users mailing list archive at Nabble.com.

Oct. 16, 2015

Re: [Pharo-users] Pharo and SQLite

by Offray Vladimir Luna CÃ¡rdenas

Hi Jimmie, My idea is to connect Pharo with the external world, starting from what I need/know, but also I try to not use every single stuff in other languages. My main criteria for selecting from other ecosystems is simplicity. I want to make Pharo compatible with my own history (which is kind of similar to the ones of many non-pharoers), so that bridge can be crossed by others. This is the app I'm refering to: http://smalltalkhub.com/#!/~Offray/Grafoscopio Is the one I'm making to finally learn Smalltalk with limited time, so lots of rookie code everywhere, but works (mostly for me now). Hopefully I will have more time to learn and improve it. I have some text I have done using it, with open innovation and open/citizen science as themes (only in Spanish) and recently I made a proposal on how to use/extend it (I have been publicizing it in another thread but details are on [1]) [1] https://www.newschallenge.org/challenge/data/entries/data-kitchen-frictionl… Cheers, Offray On 15/10/15 17:10, Jimmie Houchin wrote: > Hello Offray, > > If we didn't have the big push for GitHub. I would love to see a > Fossil source code interface for Pharo. If we had this we could > potentially replace SmalltalkHub with something more functional almost > instantly. This is a big assumption, but possibly correct. But since > it comes with a web ui it has a start. I just don't know what would be > involved in making it suitable for a community of projects. I just > find SmalltalkHub painful. I haven't actually started using Fossil > yet. Just watched the videos and began reading the book and drinking > the kool-aid. :) > > I do love how pro-active he is being in suggesting big things to > established products or ideas. > > While I am very pro doing as much stuff in Pharo as possible. ie: not > using every tool out there from other languages, Python, Ruby, etc. > > I do think it is a good thing when it comes to things like data > persistence to be ready to use solutions that help people feel > comfortable that they could have an exit strategy should Pharo some > how crash, go crazy, quit working or simply fade away like many > believe Smalltalk already has. It could make some people a little more > comfortable in a Pharo solution. > > He talks about LibreOffice and what benefits it could have if it used > SQLite rather than a pile of files for persistency. What if Pharo was > the app and SQLite the persistency for the document? We could do our > own office suite or whatever. We would have a portable, future proof, > application file format that people beyond the Pharo/Smalltalk > community could feel good about. > > Which app of yours are you referring to? > > Thanks for your input. > > Jimmie > > > On 10/15/2015 03:49 PM, Offray Vladimir Luna CÃ¡rdenas wrote: >> Hi Jimmie, >> >> Nice to see you exploring bridges between Pharo and the external >> world (that was my message about how I planned to contribute to >> pharo) and thanks for the reference about the "Git: just say no" >> video from Hipp (food for my rants with git possessed friends ;-) ). >> >> [1] https://www.youtube.com/watch?v=ghtpJnrdgbo >> >> My app uses fossil for storage and exports documents in plain text >> using STON[2] format and with this combination I can have a remote >> storage facility which is also pretty portable (just depending on >> Pharo and a fossil portable binaries). Because I'm working with >> documents, STON files can have long text inside, which is treated by >> fossil like binaries and I had not have the time to explore some >> Sven's suggestions to make it diff friendly. Also I would like some >> yaml import export on Pharo (maybe via STON). Pharo + Yaml/STON + >> Fossil could bring us some kind of free schema, human readable, >> external and distributed storage system that can talk pretty well >> with the rest of the world. >> >> Anyway I just want to point that are more people interested in simple >> and external persistence using Hipps ideas and products. Maybe fossil >> + STON can work for you also. >> >> [2] https://github.com/svenvc/ston/blob/master/ston-paper.md >> >> Keep us posted, >> >> Offray >> >> On 15/10/15 12:58, Jimmie Houchin wrote: >>> Hello, >>> >>> I am working on a project for my wife. I initially thought I would >>> keep all my data inside Pharo because it is a simple project and >>> Pharo is great at persistence in the image. >>> >>> But as I pursued the project it felt like I was reinventing the >>> database. So I thought why am I considering working so hard to >>> structure my classes and objects in such a way that I am in effect >>> writing my own database. All of this to avoid using a "real" database. >>> >>> Part of my projects goals is to keep this project contained. I do >>> not want to require my wife or whomever I share this with to have to >>> install anything other than copy or unzip the Pharo folder. No >>> PostgreSQL or MongoDB installs. Keep it simple. >>> >>> This is a goal I have for a lot of my ideas. >>> >>> In my 20+ years of computing and Internet. I have seen lots of >>> applications come and go. >>> (and no, I don't have gray hair, even though I have children older >>> than probably half the people here.) >>> >>> Many years ago, my wife and I made tremendous use out of Apple Works >>> and Microsoft Works. Apple at home and for me Microsoft at work. We >>> loved the ease and simplicity we could throw a database together and >>> just do stuff. It was great. In fact on my work PC I still use >>> weekly and sometimes daily a database I wrote in 1994. I am almost >>> at the point that Windows won't run this ancient MSWorks 4 database. >>> I will have to move my data. >>> >>> Of course these tools aren't the greatest. They have significant >>> limitations, but despite the limitations they were very empowering. >>> >>> My wife started to attempt something similar in LibreOffice but >>> LibreOffice wasn't so simple. It was confusing to her. I briefly >>> looked at LibreOffice but I am not convinced that it is the best or >>> right tool for the job. >>> >>> So that sent me on an adventure to implement this in Pharo. In my >>> learning that I don't want to reinvent the database I have initially >>> settled on using SQLite. SQLite meets my requirements above. It is >>> embedded in my Pharo app and only requires including the database >>> file I create. Very portable and easy to install along with anything >>> else in Pharo. >>> >>> SQLite seems like a very good match and complement to Pharo. A >>> trusted, reliable, external persistence that is as simple and >>> portable as is Pharo. >>> >>> Richard Hipp creator of SQLite has several videos describing how he >>> believes SQLite should be used and should not be used. >>> >>> SQLite: The Database at the Edge of the Network with Dr. Richard Hipp >>> https://www.youtube.com/watch?v=Jib2AmRb_rk >>> >>> 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an Application >>> File Format >>> https://www.youtube.com/watch?v=8y_ABXwYtuc >>> >>> The videos are inspirational for using SQLite. I like what he says. >>> I encourage watching. I have watched these and others of his >>> including his anti-git video. >>> I am not knowledgeable about the use of git in Pharo, but I would be >>> interested if anybody has considered and knows the pros and cons of >>> using Fossil instead. I know, it wouldn't get us on GitHub. I may be >>> the only one. But that isn't a biggie for me. >>> TL;DW (didn't watch) >>> Use SQLite for Application File Format for persistence instead of a >>> (zipped) pile of files and you get many benefits. Examples in videos >>> as the wrong way, LibreOffice and git. >>> >>> I think using SQLite like this for Pharo would be an excellent >>> match. We gain all the benefits of SQLite, transactions, ACID. In a >>> tool that is nicely (non)licensed, and is used and trusted generally >>> by most all of the software world. >>> >>> For Pharo this buys us an excellent, simple, equally portable >>> persistence. It also buys us persistence that is trusted by people >>> who don't trust the image for their data. This could possible help >>> with people who explore Pharo but aren't comfortable about image >>> only. Now of course it won't help the Emacs or Vim, ... people. >>> >>> I am exploring the idea of using Pharo and SQLite for what I would >>> have previously used Apple/MS Works database for. At first it would >>> be building the app/project for my wife. And during and after that >>> project generalize some things to make a better out of the box >>> solution for like projects. >>> >>> Thoughts, opinions, ideas, wisdom. Any and all appreciated. >>> >>> Thanks. >>> >>> Jimmie >>> >>> >>> >>> >>> >>> >> >> > > >

Oct. 15, 2015

Re: [Pharo-users] Pharo and SQLite

by Jimmie Houchin

Hello Offray, If we didn't have the big push for GitHub. I would love to see a Fossil source code interface for Pharo. If we had this we could potentially replace SmalltalkHub with something more functional almost instantly. This is a big assumption, but possibly correct. But since it comes with a web ui it has a start. I just don't know what would be involved in making it suitable for a community of projects. I just find SmalltalkHub painful. I haven't actually started using Fossil yet. Just watched the videos and began reading the book and drinking the kool-aid. :) I do love how pro-active he is being in suggesting big things to established products or ideas. While I am very pro doing as much stuff in Pharo as possible. ie: not using every tool out there from other languages, Python, Ruby, etc. I do think it is a good thing when it comes to things like data persistence to be ready to use solutions that help people feel comfortable that they could have an exit strategy should Pharo some how crash, go crazy, quit working or simply fade away like many believe Smalltalk already has. It could make some people a little more comfortable in a Pharo solution. He talks about LibreOffice and what benefits it could have if it used SQLite rather than a pile of files for persistency. What if Pharo was the app and SQLite the persistency for the document? We could do our own office suite or whatever. We would have a portable, future proof, application file format that people beyond the Pharo/Smalltalk community could feel good about. Which app of yours are you referring to? Thanks for your input. Jimmie On 10/15/2015 03:49 PM, Offray Vladimir Luna CÃ¡rdenas wrote: > Hi Jimmie, > > Nice to see you exploring bridges between Pharo and the external world > (that was my message about how I planned to contribute to pharo) and > thanks for the reference about the "Git: just say no" video from Hipp > (food for my rants with git possessed friends ;-) ). > > [1] https://www.youtube.com/watch?v=ghtpJnrdgbo > > My app uses fossil for storage and exports documents in plain text > using STON[2] format and with this combination I can have a remote > storage facility which is also pretty portable (just depending on > Pharo and a fossil portable binaries). Because I'm working with > documents, STON files can have long text inside, which is treated by > fossil like binaries and I had not have the time to explore some > Sven's suggestions to make it diff friendly. Also I would like some > yaml import export on Pharo (maybe via STON). Pharo + Yaml/STON + > Fossil could bring us some kind of free schema, human readable, > external and distributed storage system that can talk pretty well with > the rest of the world. > > Anyway I just want to point that are more people interested in simple > and external persistence using Hipps ideas and products. Maybe fossil > + STON can work for you also. > > [2] https://github.com/svenvc/ston/blob/master/ston-paper.md > > Keep us posted, > > Offray > > On 15/10/15 12:58, Jimmie Houchin wrote: >> Hello, >> >> I am working on a project for my wife. I initially thought I would >> keep all my data inside Pharo because it is a simple project and >> Pharo is great at persistence in the image. >> >> But as I pursued the project it felt like I was reinventing the >> database. So I thought why am I considering working so hard to >> structure my classes and objects in such a way that I am in effect >> writing my own database. All of this to avoid using a "real" database. >> >> Part of my projects goals is to keep this project contained. I do not >> want to require my wife or whomever I share this with to have to >> install anything other than copy or unzip the Pharo folder. No >> PostgreSQL or MongoDB installs. Keep it simple. >> >> This is a goal I have for a lot of my ideas. >> >> In my 20+ years of computing and Internet. I have seen lots of >> applications come and go. >> (and no, I don't have gray hair, even though I have children older >> than probably half the people here.) >> >> Many years ago, my wife and I made tremendous use out of Apple Works >> and Microsoft Works. Apple at home and for me Microsoft at work. We >> loved the ease and simplicity we could throw a database together and >> just do stuff. It was great. In fact on my work PC I still use weekly >> and sometimes daily a database I wrote in 1994. I am almost at the >> point that Windows won't run this ancient MSWorks 4 database. I will >> have to move my data. >> >> Of course these tools aren't the greatest. They have significant >> limitations, but despite the limitations they were very empowering. >> >> My wife started to attempt something similar in LibreOffice but >> LibreOffice wasn't so simple. It was confusing to her. I briefly >> looked at LibreOffice but I am not convinced that it is the best or >> right tool for the job. >> >> So that sent me on an adventure to implement this in Pharo. In my >> learning that I don't want to reinvent the database I have initially >> settled on using SQLite. SQLite meets my requirements above. It is >> embedded in my Pharo app and only requires including the database >> file I create. Very portable and easy to install along with anything >> else in Pharo. >> >> SQLite seems like a very good match and complement to Pharo. A >> trusted, reliable, external persistence that is as simple and >> portable as is Pharo. >> >> Richard Hipp creator of SQLite has several videos describing how he >> believes SQLite should be used and should not be used. >> >> SQLite: The Database at the Edge of the Network with Dr. Richard Hipp >> https://www.youtube.com/watch?v=Jib2AmRb_rk >> >> 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an Application >> File Format >> https://www.youtube.com/watch?v=8y_ABXwYtuc >> >> The videos are inspirational for using SQLite. I like what he says. I >> encourage watching. I have watched these and others of his including >> his anti-git video. >> I am not knowledgeable about the use of git in Pharo, but I would be >> interested if anybody has considered and knows the pros and cons of >> using Fossil instead. I know, it wouldn't get us on GitHub. I may be >> the only one. But that isn't a biggie for me. >> TL;DW (didn't watch) >> Use SQLite for Application File Format for persistence instead of a >> (zipped) pile of files and you get many benefits. Examples in videos >> as the wrong way, LibreOffice and git. >> >> I think using SQLite like this for Pharo would be an excellent match. >> We gain all the benefits of SQLite, transactions, ACID. In a tool >> that is nicely (non)licensed, and is used and trusted generally by >> most all of the software world. >> >> For Pharo this buys us an excellent, simple, equally portable >> persistence. It also buys us persistence that is trusted by people >> who don't trust the image for their data. This could possible help >> with people who explore Pharo but aren't comfortable about image >> only. Now of course it won't help the Emacs or Vim, ... people. >> >> I am exploring the idea of using Pharo and SQLite for what I would >> have previously used Apple/MS Works database for. At first it would >> be building the app/project for my wife. And during and after that >> project generalize some things to make a better out of the box >> solution for like projects. >> >> Thoughts, opinions, ideas, wisdom. Any and all appreciated. >> >> Thanks. >> >> Jimmie >> >> >> >> >> >> > >

Oct. 15, 2015

Re: [Pharo-users] Pharo and SQLite

by Jimmie Houchin

Thanks for the reply. My idea at the moment to write the application as the user interface to the SQLite database. I do want all of the rdb features. I also explicitly want something that is usable from other languages or environments. I might someday think LuaJIT to be the direction I want to go or whatever. So I want my data to be usable by most anybody. And I think this view is a good thing for Pharo. I want Pharo to win because it is the best solution. Not because of any particular technology lock-in. As I was thinking about the searches that my wife will want in this recipe database. It seemed to me that there was no easy searches just iterating through collections of objects. Which is why in my initial naive thinking that as I approached the problem it felt that in order to search like we wanted to search it was not a simple solution regardless of keeping it all Pharo and persisting in the image or moving the data to an SQLite database. It just felt like I was going to write database like methods to search over my collections and join and filter data from hither, thither and yon. It seemed like moving to a real database would be a win. I could be wrong and have a misconception of how to properly solve the problem in Pharo/Smalltalk. I am completely open to my naive initial conception being wrong. I am far from expert. As I worked on the project and discussed it with my customer. This is my first project with a customer. The project kept growing in scope and requirements. While I do have a customer, I do have an excellent relationship with my customer. So I do have the liberty to learn and grow and even change directions in this project using the technology of my choosing. :) At the moment I am choosing Pharo and SQLite. I at present do not see that writing an app on top of an SQLite database would be more difficult than doing so in something like Lua. Unless being less OO and more function is a big win. I also somewhat have the thought of doing a test fork of the project in a pure Pharo version. This just to test my present assumptions. Whatever I do will be released with the exception of the recipes. The content is not mine. :) Who knows, my wife might be willing to release also. :) That would test the scaling feature of the project. Most of you all don't need recipes in our quantity. Thanks. Jimmie On 10/15/2015 01:54 PM, Mariano Martinez Peck wrote: > Hi Jimmie, > > Your approach seems very good from my point of view. As you know, > making directly SQL queries or even writing mappings via a relational > mapper are always a pain. So, my comment is that if you are willing to > NOT have acid, transactions, and many other of the relational db > features, you can use a simple one-file based approach like using > plain Fuel, or even SandstoneDB with Fuel. This scales well for > small/medium apps. The good thing with this approaches is that you do > not need to map classes to tables, and avoid having write queries > etc. Pros and cons, as always. > > Cheers, > > > On Thu, Oct 15, 2015 at 3:43 PM, Robert Withers > <robert.w.withers(a)gmail.com <mailto:robert.w.withers@gmail.com>> wrote: > > Thanks to both of you for the links. I appreciate you. > > Robert > > > On 10/15/2015 02:22 PM, Esteban A. Maringolo wrote: > > I haven't used SQLite in Pharo, but I used it in Android. It is a > pretty complete database solution, self contained in a single file > (and a shared library ;-)). > > I already posted the slides of the PgCon where Richard Hipp states > that SQLite is the replacement of fopen() and not of a whole > RDBMS: > http://www.pgcon.org/2014/schedule/attachments/319_PGCon2014OpeningKeynote.… > > You already have drivers for it here: > http://www.smalltalkhub.com/#!/~PharoExtras/NBSQLite3 > <http://www.smalltalkhub.com/#%21/%7EPharoExtras/NBSQLite3> > > Regards! > > > > Esteban A. Maringolo > > > 2015-10-15 15:05 GMT-03:00 Robert Withers > <robert.w.withers(a)gmail.com <mailto:robert.w.withers@gmail.com>>: > > Hi Jimmie, > > Is this SQlite adaptor you wrote published publicly? I'd > definitely like to > evaluate this technology for my stack. > > Thank you, > Robet > > > On 10/15/2015 01:58 PM, Jimmie Houchin wrote: > > > Hello, > > I am working on a project for my wife. I initially > thought I would keep > all my data inside Pharo because it is a simple > project and Pharo is > great at persistence in the image. > > But as I pursued the project it felt like I was > reinventing the > database. So I thought why am I considering working so > hard to structure > my classes and objects in such a way that I am in > effect writing my own > database. All of this to avoid using a "real" database. > > Part of my projects goals is to keep this project > contained. I do not > want to require my wife or whomever I share this with > to have to install > anything other than copy or unzip the Pharo folder. No > PostgreSQL or > MongoDB installs. Keep it simple. > > This is a goal I have for a lot of my ideas. > > In my 20+ years of computing and Internet. I have seen > lots of > applications come and go. > (and no, I don't have gray hair, even though I have > children older than > probably half the people here.) > > Many years ago, my wife and I made tremendous use out > of Apple Works and > Microsoft Works. Apple at home and for me Microsoft at > work. We loved > the ease and simplicity we could throw a database > together and just do > stuff. It was great. In fact on my work PC I still use > weekly and > sometimes daily a database I wrote in 1994. I am > almost at the point > that Windows won't run this ancient MSWorks 4 > database. I will have to > move my data. > > Of course these tools aren't the greatest. They have > significant > limitations, but despite the limitations they were > very empowering. > > My wife started to attempt something similar in > LibreOffice but > LibreOffice wasn't so simple. It was confusing to her. > I briefly looked > at LibreOffice but I am not convinced that it is the > best or right tool > for the job. > > So that sent me on an adventure to implement this in > Pharo. In my > learning that I don't want to reinvent the database I > have initially > settled on using SQLite. SQLite meets my requirements > above. It is > embedded in my Pharo app and only requires including > the database file I > create. Very portable and easy to install along with > anything else in > Pharo. > > SQLite seems like a very good match and complement to > Pharo. A trusted, > reliable, external persistence that is as simple and > portable as is Pharo. > > Richard Hipp creator of SQLite has several videos > describing how he > believes SQLite should be used and should not be used. > > SQLite: The Database at the Edge of the Network with > Dr. Richard Hipp > https://www.youtube.com/watch?v=Jib2AmRb_rk > > 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an > Application File > Format > https://www.youtube.com/watch?v=8y_ABXwYtuc > > The videos are inspirational for using SQLite. I like > what he says. I > encourage watching. I have watched these and others of > his including his > anti-git video. > I am not knowledgeable about the use of git in Pharo, > but I would be > interested if anybody has considered and knows the > pros and cons of > using Fossil instead. I know, it wouldn't get us on > GitHub. I may be the > only one. But that isn't a biggie for me. > TL;DW (didn't watch) > Use SQLite for Application File Format for persistence > instead of a > (zipped) pile of files and you get many benefits. > Examples in videos as > the wrong way, LibreOffice and git. > > I think using SQLite like this for Pharo would be an > excellent match. We > gain all the benefits of SQLite, transactions, ACID. > In a tool that is > nicely (non)licensed, and is used and trusted > generally by most all of > the software world. > > For Pharo this buys us an excellent, simple, equally > portable > persistence. It also buys us persistence that is > trusted by people who > don't trust the image for their data. This could > possible help with > people who explore Pharo but aren't comfortable about > image only. Now of > course it won't help the Emacs or Vim, ... people. > > I am exploring the idea of using Pharo and SQLite for > what I would have > previously used Apple/MS Works database for. At first > it would be > building the app/project for my wife. And during and > after that project > generalize some things to make a better out of the box > solution for like > projects. > > Thoughts, opinions, ideas, wisdom. Any and all > appreciated. > > Thanks. > > Jimmie > > > > > > > > > > > > -- > Mariano > http://marianopeck.wordpress.com

Oct. 15, 2015

Re: [Pharo-users] Pharo and SQLite

by Offray Vladimir Luna CÃ¡rdenas

Hi Jimmie, Nice to see you exploring bridges between Pharo and the external world (that was my message about how I planned to contribute to pharo) and thanks for the reference about the "Git: just say no" video from Hipp (food for my rants with git possessed friends ;-) ). [1] https://www.youtube.com/watch?v=ghtpJnrdgbo My app uses fossil for storage and exports documents in plain text using STON[2] format and with this combination I can have a remote storage facility which is also pretty portable (just depending on Pharo and a fossil portable binaries). Because I'm working with documents, STON files can have long text inside, which is treated by fossil like binaries and I had not have the time to explore some Sven's suggestions to make it diff friendly. Also I would like some yaml import export on Pharo (maybe via STON). Pharo + Yaml/STON + Fossil could bring us some kind of free schema, human readable, external and distributed storage system that can talk pretty well with the rest of the world. Anyway I just want to point that are more people interested in simple and external persistence using Hipps ideas and products. Maybe fossil + STON can work for you also. [2] https://github.com/svenvc/ston/blob/master/ston-paper.md Keep us posted, Offray On 15/10/15 12:58, Jimmie Houchin wrote: > Hello, > > I am working on a project for my wife. I initially thought I would > keep all my data inside Pharo because it is a simple project and Pharo > is great at persistence in the image. > > But as I pursued the project it felt like I was reinventing the > database. So I thought why am I considering working so hard to > structure my classes and objects in such a way that I am in effect > writing my own database. All of this to avoid using a "real" database. > > Part of my projects goals is to keep this project contained. I do not > want to require my wife or whomever I share this with to have to > install anything other than copy or unzip the Pharo folder. No > PostgreSQL or MongoDB installs. Keep it simple. > > This is a goal I have for a lot of my ideas. > > In my 20+ years of computing and Internet. I have seen lots of > applications come and go. > (and no, I don't have gray hair, even though I have children older > than probably half the people here.) > > Many years ago, my wife and I made tremendous use out of Apple Works > and Microsoft Works. Apple at home and for me Microsoft at work. We > loved the ease and simplicity we could throw a database together and > just do stuff. It was great. In fact on my work PC I still use weekly > and sometimes daily a database I wrote in 1994. I am almost at the > point that Windows won't run this ancient MSWorks 4 database. I will > have to move my data. > > Of course these tools aren't the greatest. They have significant > limitations, but despite the limitations they were very empowering. > > My wife started to attempt something similar in LibreOffice but > LibreOffice wasn't so simple. It was confusing to her. I briefly > looked at LibreOffice but I am not convinced that it is the best or > right tool for the job. > > So that sent me on an adventure to implement this in Pharo. In my > learning that I don't want to reinvent the database I have initially > settled on using SQLite. SQLite meets my requirements above. It is > embedded in my Pharo app and only requires including the database file > I create. Very portable and easy to install along with anything else > in Pharo. > > SQLite seems like a very good match and complement to Pharo. A > trusted, reliable, external persistence that is as simple and portable > as is Pharo. > > Richard Hipp creator of SQLite has several videos describing how he > believes SQLite should be used and should not be used. > > SQLite: The Database at the Edge of the Network with Dr. Richard Hipp > https://www.youtube.com/watch?v=Jib2AmRb_rk > > 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an Application > File Format > https://www.youtube.com/watch?v=8y_ABXwYtuc > > The videos are inspirational for using SQLite. I like what he says. I > encourage watching. I have watched these and others of his including > his anti-git video. > I am not knowledgeable about the use of git in Pharo, but I would be > interested if anybody has considered and knows the pros and cons of > using Fossil instead. I know, it wouldn't get us on GitHub. I may be > the only one. But that isn't a biggie for me. > TL;DW (didn't watch) > Use SQLite for Application File Format for persistence instead of a > (zipped) pile of files and you get many benefits. Examples in videos > as the wrong way, LibreOffice and git. > > I think using SQLite like this for Pharo would be an excellent match. > We gain all the benefits of SQLite, transactions, ACID. In a tool that > is nicely (non)licensed, and is used and trusted generally by most all > of the software world. > > For Pharo this buys us an excellent, simple, equally portable > persistence. It also buys us persistence that is trusted by people who > don't trust the image for their data. This could possible help with > people who explore Pharo but aren't comfortable about image only. Now > of course it won't help the Emacs or Vim, ... people. > > I am exploring the idea of using Pharo and SQLite for what I would > have previously used Apple/MS Works database for. At first it would be > building the app/project for my wife. And during and after that > project generalize some things to make a better out of the box > solution for like projects. > > Thoughts, opinions, ideas, wisdom. Any and all appreciated. > > Thanks. > > Jimmie > > > > > >

Oct. 15, 2015

Re: [Pharo-users] Pharo and VPS

by Sven Van Caekenberghe

> On 15 Oct 2015, at 20:54, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > > 2015-10-15 15:52 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: >> >>> On 15 Oct 2015, at 20:24, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: >>> >>> I use DigitalOcean, a 2 core-VPS with 1GB ram could host 10 concurrent >>> images without any issues, other than the constant ~5% CPU use while >>> idle. I/O was the bottleneck, so no race conditions between the >>> different images. >> >> I second that, even the smallest instance, 512 MB RAM at $5, is more than enough for a couple of Pharo images. Just try it. >> >> https://www.digitalocean.com/?refcode=6a0334a169dc > > You are smarter than me ;-) ;-)

Oct. 15, 2015

Re: [Pharo-users] Pharo and VPS

by Esteban A. Maringolo

2015-10-15 15:52 GMT-03:00 Sven Van Caekenberghe <sven(a)stfx.eu>: > >> On 15 Oct 2015, at 20:24, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: >> >> I use DigitalOcean, a 2 core-VPS with 1GB ram could host 10 concurrent >> images without any issues, other than the constant ~5% CPU use while >> idle. I/O was the bottleneck, so no race conditions between the >> different images. > > I second that, even the smallest instance, 512 MB RAM at $5, is more than enough for a couple of Pharo images. Just try it. > > https://www.digitalocean.com/?refcode=6a0334a169dc You are smarter than me ;-) Esteban A. Maringolo

Oct. 15, 2015

Re: [Pharo-users] Pharo and SQLite

by Mariano Martinez Peck

Hi Jimmie, Your approach seems very good from my point of view. As you know, making directly SQL queries or even writing mappings via a relational mapper are always a pain. So, my comment is that if you are willing to NOT have acid, transactions, and many other of the relational db features, you can use a simple one-file based approach like using plain Fuel, or even SandstoneDB with Fuel. This scales well for small/medium apps. The good thing with this approaches is that you do not need to map classes to tables, and avoid having write queries etc. Pros and cons, as always. Cheers, On Thu, Oct 15, 2015 at 3:43 PM, Robert Withers <robert.w.withers(a)gmail.com> wrote: > Thanks to both of you for the links. I appreciate you. > > Robert > > > On 10/15/2015 02:22 PM, Esteban A. Maringolo wrote: > >> I haven't used SQLite in Pharo, but I used it in Android. It is a >> pretty complete database solution, self contained in a single file >> (and a shared library ;-)). >> >> I already posted the slides of the PgCon where Richard Hipp states >> that SQLite is the replacement of fopen() and not of a whole RDBMS: >> >> http://www.pgcon.org/2014/schedule/attachments/319_PGCon2014OpeningKeynote.… >> >> You already have drivers for it here: >> http://www.smalltalkhub.com/#!/~PharoExtras/NBSQLite3 >> >> Regards! >> >> >> >> Esteban A. Maringolo >> >> >> 2015-10-15 15:05 GMT-03:00 Robert Withers <robert.w.withers(a)gmail.com>: >> >>> Hi Jimmie, >>> >>> Is this SQlite adaptor you wrote published publicly? I'd definitely like >>> to >>> evaluate this technology for my stack. >>> >>> Thank you, >>> Robet >>> >>> >>> On 10/15/2015 01:58 PM, Jimmie Houchin wrote: >>> >>>> >>>> Hello, >>>> >>>> I am working on a project for my wife. I initially thought I would keep >>>> all my data inside Pharo because it is a simple project and Pharo is >>>> great at persistence in the image. >>>> >>>> But as I pursued the project it felt like I was reinventing the >>>> database. So I thought why am I considering working so hard to structure >>>> my classes and objects in such a way that I am in effect writing my own >>>> database. All of this to avoid using a "real" database. >>>> >>>> Part of my projects goals is to keep this project contained. I do not >>>> want to require my wife or whomever I share this with to have to install >>>> anything other than copy or unzip the Pharo folder. No PostgreSQL or >>>> MongoDB installs. Keep it simple. >>>> >>>> This is a goal I have for a lot of my ideas. >>>> >>>> In my 20+ years of computing and Internet. I have seen lots of >>>> applications come and go. >>>> (and no, I don't have gray hair, even though I have children older than >>>> probably half the people here.) >>>> >>>> Many years ago, my wife and I made tremendous use out of Apple Works and >>>> Microsoft Works. Apple at home and for me Microsoft at work. We loved >>>> the ease and simplicity we could throw a database together and just do >>>> stuff. It was great. In fact on my work PC I still use weekly and >>>> sometimes daily a database I wrote in 1994. I am almost at the point >>>> that Windows won't run this ancient MSWorks 4 database. I will have to >>>> move my data. >>>> >>>> Of course these tools aren't the greatest. They have significant >>>> limitations, but despite the limitations they were very empowering. >>>> >>>> My wife started to attempt something similar in LibreOffice but >>>> LibreOffice wasn't so simple. It was confusing to her. I briefly looked >>>> at LibreOffice but I am not convinced that it is the best or right tool >>>> for the job. >>>> >>>> So that sent me on an adventure to implement this in Pharo. In my >>>> learning that I don't want to reinvent the database I have initially >>>> settled on using SQLite. SQLite meets my requirements above. It is >>>> embedded in my Pharo app and only requires including the database file I >>>> create. Very portable and easy to install along with anything else in >>>> Pharo. >>>> >>>> SQLite seems like a very good match and complement to Pharo. A trusted, >>>> reliable, external persistence that is as simple and portable as is >>>> Pharo. >>>> >>>> Richard Hipp creator of SQLite has several videos describing how he >>>> believes SQLite should be used and should not be used. >>>> >>>> SQLite: The Database at the Edge of the Network with Dr. Richard Hipp >>>> https://www.youtube.com/watch?v=Jib2AmRb_rk >>>> >>>> 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an Application File >>>> Format >>>> https://www.youtube.com/watch?v=8y_ABXwYtuc >>>> >>>> The videos are inspirational for using SQLite. I like what he says. I >>>> encourage watching. I have watched these and others of his including his >>>> anti-git video. >>>> I am not knowledgeable about the use of git in Pharo, but I would be >>>> interested if anybody has considered and knows the pros and cons of >>>> using Fossil instead. I know, it wouldn't get us on GitHub. I may be the >>>> only one. But that isn't a biggie for me. >>>> TL;DW (didn't watch) >>>> Use SQLite for Application File Format for persistence instead of a >>>> (zipped) pile of files and you get many benefits. Examples in videos as >>>> the wrong way, LibreOffice and git. >>>> >>>> I think using SQLite like this for Pharo would be an excellent match. We >>>> gain all the benefits of SQLite, transactions, ACID. In a tool that is >>>> nicely (non)licensed, and is used and trusted generally by most all of >>>> the software world. >>>> >>>> For Pharo this buys us an excellent, simple, equally portable >>>> persistence. It also buys us persistence that is trusted by people who >>>> don't trust the image for their data. This could possible help with >>>> people who explore Pharo but aren't comfortable about image only. Now of >>>> course it won't help the Emacs or Vim, ... people. >>>> >>>> I am exploring the idea of using Pharo and SQLite for what I would have >>>> previously used Apple/MS Works database for. At first it would be >>>> building the app/project for my wife. And during and after that project >>>> generalize some things to make a better out of the box solution for like >>>> projects. >>>> >>>> Thoughts, opinions, ideas, wisdom. Any and all appreciated. >>>> >>>> Thanks. >>>> >>>> Jimmie >>>> >>>> >>>> >>>> >>>> >>>> >>> >> > -- Mariano http://marianopeck.wordpress.com

Oct. 15, 2015

Re: [Pharo-users] Pharo and VPS

by Sven Van Caekenberghe

> On 15 Oct 2015, at 20:24, Esteban A. Maringolo <emaringolo(a)gmail.com> wrote: > > I use DigitalOcean, a 2 core-VPS with 1GB ram could host 10 concurrent > images without any issues, other than the constant ~5% CPU use while > idle. I/O was the bottleneck, so no race conditions between the > different images. I second that, even the smallest instance, 512 MB RAM at $5, is more than enough for a couple of Pharo images. Just try it. https://www.digitalocean.com/?refcode=6a0334a169dc ;-) > Regards! > > Esteban A. Maringolo > > > 2015-10-15 15:00 GMT-03:00 Jimmie Houchin <jlhouchin(a)gmail.com>: >> Thanks for the reply. >> >> Sounds like a winner to me. >> >> Jimmie >> >> >> On 10/15/2015 10:32 AM, Mariano Martinez Peck wrote: >> >> >> >> On Thu, Oct 15, 2015 at 12:17 PM, Jimmie Houchin <jlhouchin(a)gmail.com> >> wrote: >>> >>> Hello, >>> >>> I am exploring getting a VPS similar to the 1GB option. >>> https://www.linode.com/pricing >>> >>> I have not selected a company or service at this time so this is simply an >>> example and one of my options. >>> >>> I have not used such a service before. >>> >> >> I am using Linode and running Pharo and GemStone there (CentOS 7). So far no >> problem and Linode seem very very cool. >> >>> >>> How suitable is Pharo currently for such an use case? >>> Will Pharo and its polling and constant minimum cpu usage be a problem? >> >> >> It's not in my case. Linode does invoice for cpu cycles, you simply has CPU >> assigned and you do not care if it is 100% 24 hours a day or 10% used. >> Other services like amazon etc do care about CPU cycles (the price is based >> somehow on that I think), but not in Linode or other VPS-like. >> >>> >>> >>> I am wanting to learn to use VPS/Cloud services. I am wanting to play with >>> a web server, wiki, blog. I want control of my tools and not the standard >>> LAMP setup that so commonly offered. >> >> >> I am very happy with Linode. It supports many nice things like having >> multiple virtual images, clone them, backups, etc. >> For example, I have a Linode template VM that is "ready to run my app" and >> then I can clone such VM for each site (app instance) we deploy. >> We have a daily backup, weekly, monthly and one more free slot. >> >>> >>> Any wisdom on Pharo in such an environment, pros and cons, greatly >>> appreciated. >>> >> >> I think it depends on the type of app. For my case, I do not want to host >> myself anymore. So I would go for cloud based for sure. Then, you have the >> VPS like or the amazon-like. Both allow you to grow. I guess you may choose >> this depending on your type of app. In any case, you end up having a OS >> where you simply install Pharo and that's it. >> >> >> >> -- >> Mariano >> http://marianopeck.wordpress.com >> >> >

Oct. 15, 2015

Re: [Pharo-users] Pharo and SQLite

by Robert Withers

Thanks to both of you for the links. I appreciate you. Robert On 10/15/2015 02:22 PM, Esteban A. Maringolo wrote: > I haven't used SQLite in Pharo, but I used it in Android. It is a > pretty complete database solution, self contained in a single file > (and a shared library ;-)). > > I already posted the slides of the PgCon where Richard Hipp states > that SQLite is the replacement of fopen() and not of a whole RDBMS: > http://www.pgcon.org/2014/schedule/attachments/319_PGCon2014OpeningKeynote.… > > You already have drivers for it here: > http://www.smalltalkhub.com/#!/~PharoExtras/NBSQLite3 > > Regards! > > > > Esteban A. Maringolo > > > 2015-10-15 15:05 GMT-03:00 Robert Withers <robert.w.withers(a)gmail.com>: >> Hi Jimmie, >> >> Is this SQlite adaptor you wrote published publicly? I'd definitely like to >> evaluate this technology for my stack. >> >> Thank you, >> Robet >> >> >> On 10/15/2015 01:58 PM, Jimmie Houchin wrote: >>> >>> Hello, >>> >>> I am working on a project for my wife. I initially thought I would keep >>> all my data inside Pharo because it is a simple project and Pharo is >>> great at persistence in the image. >>> >>> But as I pursued the project it felt like I was reinventing the >>> database. So I thought why am I considering working so hard to structure >>> my classes and objects in such a way that I am in effect writing my own >>> database. All of this to avoid using a "real" database. >>> >>> Part of my projects goals is to keep this project contained. I do not >>> want to require my wife or whomever I share this with to have to install >>> anything other than copy or unzip the Pharo folder. No PostgreSQL or >>> MongoDB installs. Keep it simple. >>> >>> This is a goal I have for a lot of my ideas. >>> >>> In my 20+ years of computing and Internet. I have seen lots of >>> applications come and go. >>> (and no, I don't have gray hair, even though I have children older than >>> probably half the people here.) >>> >>> Many years ago, my wife and I made tremendous use out of Apple Works and >>> Microsoft Works. Apple at home and for me Microsoft at work. We loved >>> the ease and simplicity we could throw a database together and just do >>> stuff. It was great. In fact on my work PC I still use weekly and >>> sometimes daily a database I wrote in 1994. I am almost at the point >>> that Windows won't run this ancient MSWorks 4 database. I will have to >>> move my data. >>> >>> Of course these tools aren't the greatest. They have significant >>> limitations, but despite the limitations they were very empowering. >>> >>> My wife started to attempt something similar in LibreOffice but >>> LibreOffice wasn't so simple. It was confusing to her. I briefly looked >>> at LibreOffice but I am not convinced that it is the best or right tool >>> for the job. >>> >>> So that sent me on an adventure to implement this in Pharo. In my >>> learning that I don't want to reinvent the database I have initially >>> settled on using SQLite. SQLite meets my requirements above. It is >>> embedded in my Pharo app and only requires including the database file I >>> create. Very portable and easy to install along with anything else in >>> Pharo. >>> >>> SQLite seems like a very good match and complement to Pharo. A trusted, >>> reliable, external persistence that is as simple and portable as is Pharo. >>> >>> Richard Hipp creator of SQLite has several videos describing how he >>> believes SQLite should be used and should not be used. >>> >>> SQLite: The Database at the Edge of the Network with Dr. Richard Hipp >>> https://www.youtube.com/watch?v=Jib2AmRb_rk >>> >>> 2014 SouthEast LinuxFest - Richard Hipp - SQLite as an Application File >>> Format >>> https://www.youtube.com/watch?v=8y_ABXwYtuc >>> >>> The videos are inspirational for using SQLite. I like what he says. I >>> encourage watching. I have watched these and others of his including his >>> anti-git video. >>> I am not knowledgeable about the use of git in Pharo, but I would be >>> interested if anybody has considered and knows the pros and cons of >>> using Fossil instead. I know, it wouldn't get us on GitHub. I may be the >>> only one. But that isn't a biggie for me. >>> TL;DW (didn't watch) >>> Use SQLite for Application File Format for persistence instead of a >>> (zipped) pile of files and you get many benefits. Examples in videos as >>> the wrong way, LibreOffice and git. >>> >>> I think using SQLite like this for Pharo would be an excellent match. We >>> gain all the benefits of SQLite, transactions, ACID. In a tool that is >>> nicely (non)licensed, and is used and trusted generally by most all of >>> the software world. >>> >>> For Pharo this buys us an excellent, simple, equally portable >>> persistence. It also buys us persistence that is trusted by people who >>> don't trust the image for their data. This could possible help with >>> people who explore Pharo but aren't comfortable about image only. Now of >>> course it won't help the Emacs or Vim, ... people. >>> >>> I am exploring the idea of using Pharo and SQLite for what I would have >>> previously used Apple/MS Works database for. At first it would be >>> building the app/project for my wife. And during and after that project >>> generalize some things to make a better out of the box solution for like >>> projects. >>> >>> Thoughts, opinions, ideas, wisdom. Any and all appreciated. >>> >>> Thanks. >>> >>> Jimmie >>> >>> >>> >>> >>> >> >

Oct. 15, 2015