[Pharo-users] Pharo and SQLite

Mariano Martinez Peck marianopeck at gmail.com
Thu Oct 15 14:54:43 EDT 2015


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 at 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.pdf
>>
>> 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 at 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
-------------- next part --------------
An HTML attachment was scrubbed...
URL: <http://lists.pharo.org/pipermail/pharo-users_lists.pharo.org/attachments/20151015/66060e3a/attachment.html>


More information about the Pharo-users mailing list