# DataMapper (was Re: Thread Priority)

**URL:** <https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439>\
**Category:** IronRuby\
**Created:** [April 23, 2010, 7:24am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439 "2010-04-23T07:24:49Z")\
**Posts on this page:** 6\
**Page:** 1

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 23, 2010, 7:24am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/1 "2010-04-23T07:24:49Z")

</div>

That’s a very good question actually; I know at least one Rails +  
DataMapper site that will switch to IronRuby if they can get it working  
(one I used to work on), so I’m personally interested in this as well.  
🙂

Last I checked do\_sqlserver wasn’t too mature. They don’t depend on dbi,  
so there will need to be a separate abstraction for ADO and  
[http://ADO.NET](http://ADO.NET) [ADO.NET](http://ADO.NET)[http://ADO.NET](http://ADO.NET). I have more faith in  
do\_sqlite3 working, as there is a .NET API for sqlite3  
([http://sqlite.phxsoftware.com/](http://sqlite.phxsoftware.com/)), and it would be minimal work to test  
do\_sqlite3 with sqlite-ironruby.

As far as DataMapper itself, it’d be interesting to run DataMapper with  
it’s in-memory database to see if IronRuby at-least run it.

I’ll want to look into running datamapper for unit testing sake, but it  
would be great if someone signed up to work on the sqlserver and sqlite3  
support. Ryan, you want to head that up, or at least look for a team?

~Jimmy

On Apr 22, 2010, at 9:54 PM, “Ryan R.”  
\<[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\>  
wrote:

What’s the status of the DataMapper port? I was just trying to use it  
but couldn’t get the gem installed. I’m interested in helping get this  
working. What next steps are needed?

Thanks,

Ryan R.

Email: [mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
[http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
[http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
[http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/) [http://wizardsofsmart.net/](http://wizardsofsmart.net/)  
[http://wizardsofsmart.net/](http://wizardsofsmart.net/) [http://wizardsofsmart.net/](http://wizardsofsmart.net/)  
Twitter: @panesofglass  
Website: [http://panesofglass.org/](http://panesofglass.org/) [http://panesofglass.org/](http://panesofglass.org/)  
[http://panesofglass.org/](http://panesofglass.org/) [http://panesofglass.org/](http://panesofglass.org/)

On Mon, Oct 26, 2009 at 7:02 AM, Alexander Coles  
\<[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\>  
wrote:  
Quick +1 to vote this patch up.

I’ve been working on the JRuby support for the DataMapper ORM and  
DataObjects(.rb) database connectivity layer. These projects rely in  
turn on another project called Extlib, which provides a bunch of  
useful extensions (lazy arrays, thread pools, string extensions) for  
the other two projects.

I pulled down and built the latest IronRuby and running Extlib’s  
specs, the lack of Thread#priority appears to be the first blocker in  
our support for IR.

Alex Coles

DataMapper: [http://github.com/datamapper/dm-core](http://github.com/datamapper/dm-core)  
[http://github.com/datamapper/dm-core](http://github.com/datamapper/dm-core)  
[http://github.com/datamapper/dm-core](http://github.com/datamapper/dm-core)

> **[GitHub - datamapper/dm-core: DataMapper - Core](https://github.com/datamapper/dm-core)**
>
> DataMapper - Core. Contribute to datamapper/dm-core development by creating an account on GitHub.

DataObjects: [http://github.com/datamapper/do](http://github.com/datamapper/do)  
[http://github.com/datamapper/do](http://github.com/datamapper/do) [http://github.com/datamapper/do](http://github.com/datamapper/do)

> **[GitHub - datamapper/do: DataObjects](https://github.com/datamapper/do)**
>
> DataObjects. Contribute to datamapper/do development by creating an account on GitHub.

Extlib: [http://github.com/datamapper/extlib](http://github.com/datamapper/extlib)  
[http://github.com/datamapper/extlib](http://github.com/datamapper/extlib)  
[http://github.com/datamapper/extlib](http://github.com/datamapper/extlib)

> **[GitHub - datamapper/extlib: General Ruby extensions for Merb](https://github.com/datamapper/extlib)**
>
> General Ruby extensions for Merb. Contribute to datamapper/extlib development by creating an account on GitHub.

On Mon, Oct 26, 2009 at 6:12 AM, Shay F.  
\<[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)removed\_email\_address@domain.invalid[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\>  
wrote:

> > I have done a very basic implementation of a while back but I did not  
> > 164f202
> > 
> > Thanks!
> > 
> > > -----Original Message-----  
> > > I’m talking about Thread’s instance attribute - priority. I’m using the
> > > 
> > > > > > t.priority  
> > > > > > Thanks,  
> > > > > > Shay.
> > > 
> > > ## –
> > > 
> > > Shay F.  
> > > Author of IronRuby Unleashed  
> > > [http://www.IronShay.com](http://www.IronShay.com) [http://www.IronShay.com](http://www.IronShay.com) [http://www.IronShay.com](http://www.IronShay.com) [http://www.IronShay.com](http://www.IronShay.com)  
> > > Follow me: [http://twitter.com/ironshay](http://twitter.com/ironshay) [http://twitter.com/ironshay](http://twitter.com/ironshay) [http://twitter.com/ironshay](http://twitter.com/ironshay) [http://twitter.com/ironshay](http://twitter.com/ironshay)
> > > 
> > > * * *

* * *

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---

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 23, 2010, 8:17am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/2 "2010-04-23T08:17:30Z")

</div>

I was also very interested in this.

Jimmy, shouldn’t plain old ADO support “just work” once this bug is  
fixed?:  
[ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085](http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085)

[http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085](http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085)Obviously,  
plain old ADO will not be the most optimal solution, but I think it may  
give  
us something for MSSQL servers right away.  
Thanks!  
Best Regards,  
Kevin R.

On Thu, Apr 22, 2010 at 11:25 PM, Jimmy S. \<

---

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 23, 2010, 8:59am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/3 "2010-04-23T08:59:04Z")

</div>

Yes, though not idea, ADO should just work. But it probably doesn’t  
because of that bug, so I’ve moved it up to our 1.0.1 release and I’ll  
look into why the DLR COM Binder is not able to consume this interface.

Thanks for reminding me of this issue Kevin!

From: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
[[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)] On Behalf Of Kevin  
Radcliffe  
Sent: Thursday, April 22, 2010 10:47 PM  
To: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
Subject: Re: [Ironruby-core] DataMapper (was Re: Thread Priority)

I was also very interested in this.

Jimmy, shouldn’t plain old ADO support “just work” once this bug is  
fixed?:  
[ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085](http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085)[http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085](http://ironruby.codeplex.com/WorkItem/View.aspx?WorkItemId=4085)

Obviously, plain old ADO will not be the most optimal solution, but I  
think it may give us something for MSSQL servers right away.  
Thanks!  
Best Regards,  
Kevin R.  
On Thu, Apr 22, 2010 at 11:25 PM, Jimmy S.  
\<[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\>  
wrote:  
That’s a very good question actually; I know at least one Rails +  
DataMapper site that will switch to IronRuby if they can get it working  
(one I used to work on), so I’m personally interested in this as well.  
🙂

Last I checked do\_sqlserver wasn’t too mature. They don’t depend on dbi,  
so there will need to be a separate abstraction for ADO and  
[ADO.NET](http://ADO.NET)[http://ADO.NET](http://ADO.NET). I have more faith in do\_sqlite3 working, as  
there is a .NET API for sqlite3 ([http://sqlite.phxsoftware.com/](http://sqlite.phxsoftware.com/)), and it  
would be minimal work to test do\_sqlite3 with sqlite-ironruby.

As far as DataMapper itself, it’d be interesting to run DataMapper with  
it’s in-memory database to see if IronRuby at-least run it.

I’ll want to look into running datamapper for unit testing sake, but it  
would be great if someone signed up to work on the sqlserver and sqlite3  
support. Ryan, you want to head that up, or at least look for a team?

~Jimmy

On Apr 22, 2010, at 9:54 PM, “Ryan R.”  
\<[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\> wrote:  
What’s the status of the DataMapper port? I was just trying to use it  
but couldn’t get the gem installed. I’m interested in helping get this  
working. What next steps are needed?

Thanks,

Ryan R.

Email: [removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)  
LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/)  
Twitter: @panesofglass  
Website: [http://panesofglass.org/](http://panesofglass.org/)

On Mon, Oct 26, 2009 at 7:02 AM, Alexander Coles  
\<[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\> wrote:  
Quick +1 to vote this patch up.

I’ve been working on the JRuby support for the DataMapper ORM and  
DataObjects(.rb) database connectivity layer. These projects rely in  
turn on another project called Extlib, which provides a bunch of  
useful extensions (lazy arrays, thread pools, string extensions) for  
the other two projects.

I pulled down and built the latest IronRuby and running Extlib’s  
specs, the lack of Thread#priority appears to be the first blocker in  
our support for IR.

Alex Coles

DataMapper: [GitHub - datamapper/dm-core: DataMapper - Core · GitHub](http://github.com/datamapper/dm-core)  
DataObjects: [GitHub - datamapper/do: DataObjects · GitHub](http://github.com/datamapper/do)  
Extlib: [GitHub - datamapper/extlib: General Ruby extensions for Merb · GitHub](http://github.com/datamapper/extlib)

On Mon, Oct 26, 2009 at 6:12 AM, Shay F.  
\<[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)[mailto:removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid)\> wrote:

> > I have done a very basic implementation of a while back but I did not  
> > 164f202
> > 
> > Thanks!
> > 
> > > -----Original Message-----  
> > > I’m talking about Thread’s instance attribute - priority. I’m using the
> > > 
> > > > > > t.priority  
> > > > > > Thanks,  
> > > > > > Shay.
> > > 
> > > ## –
> > > 
> > > Shay F.  
> > > Author of IronRuby Unleashed  
> > > [http://www.IronShay.com](http://www.IronShay.com)  
> > > Follow me: [http://twitter.com/ironshay](http://twitter.com/ironshay)
> > > 
> > > * * *

* * *

Ironruby-core mailing list  
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[http://rubyforge.org/mailman/listinfo/ironruby-core](http://rubyforge.org/mailman/listinfo/ironruby-core)

* * *

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---

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 23, 2010, 8:25am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/4 "2010-04-23T08:25:42Z")

</div>

Too late for email I guess. My email was re: Sequel and not Datamapper.  
May still apply, but probably not. My apologies.

Best Regards,  
Kevin R.

On Thu, Apr 22, 2010 at 11:46 PM, Kevin R.  
\<removed\_email\_address@domain.invalid

---

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 23, 2010, 9:14am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/5 "2010-04-23T09:14:18Z")

</div>

On Fri, Apr 23, 2010 at 07:52, Kevin R.  
[removed\_email\_address@domain.invalid](mailto:removed_email_address@domain.invalid) wrote:

> Too late for email I guess. My email was re: Sequel and not Datamapper.

By the way, last month I’ve started playing with Sequel on IronRuby  
and, after having filed the bug about ADO+COM on codeplex, I created a  
quick and dirty adapter for MSSQL [1] that utilizes the  
System.Data.SqlClient namespace and reuses the shared adapter bits of  
Sequel to build SQL queries. While still suboptimal (I will put some  
work into it soon), it somewhat works and the fact that it enables  
connections to MSSQL from mono+linux makes the approach vastly  
superior compared to using ADO via COM 😉 Generic support for [ADO.NET](http://ADO.NET)  
in Sequel and a subadapter for MSSQL should be the actual way to go.

[1] [Commits · nrk/sequel · GitHub](http://github.com/nrk/sequel/commits/ironruby-mssqlclient)

–  
Daniele A.

> **[clorophilla.net](https://clorophilla.net/)**

[http://twitter.com/JoL1hAHN](http://twitter.com/JoL1hAHN)

---

<div class="post-metadata">

**Author:** ![jsoho](https://www.ruby-forum.com/letter_avatar_proxy/v4/letter/j/8baadc/32.png) [@jsoho](https://www.ruby-forum.com/u/jsoho)\
**Post date:** [April 24, 2010, 7:58am UTC](https://www.ruby-forum.com/t/datamapper-was-re-thread-priority/187439/6 "2010-04-24T07:58:42Z")

</div>

I’m happy to help out. I’ll start working on it this weekend.

Regards,

Ryan R.

Email: removed\_email\_address@domain.invalid  
LinkedIn: [http://www.linkedin.com/in/ryanriley](http://www.linkedin.com/in/ryanriley)  
Blog: [http://wizardsofsmart.net/](http://wizardsofsmart.net/)  
Twitter: @panesofglass  
Website: [http://panesofglass.org/](http://panesofglass.org/)

On Thu, Apr 22, 2010 at 10:25 PM, Jimmy S. \<