Re: [DataMapper] Creating a new adapter

[Markus Schirp]

The best documentation are existing adapters.

An adapter that is easy to follow (IMHO) is the dm-mongo-adapter.

You can find it under https://github.com/solnic/dm-mongo-adapter.

The RDBMS adapters are a littlebit more complex to understand as they
are implemented on the abstract dm-do-adpater. But when you whant to
start an RDBMS adapter you should built it on top of dm-do-adpater.

Regards,

Markus

On 08/03/2012 02:11 PM, Greg wrote:
> Hi all
>
> I'm looking to create a new adapter for DataMapper. Is there a template
> that I can use as a starting point, or a document that I can refer to
> that explains the process?
>
> Thanks
> Greg
>
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[Chris Corbyn]

I'd actually use the InMemoryAdapter as a basis to work from.  It just keeps everything in core ruby data structures, so it's easy to follow and swap out the code with your own implementation.

https://github.com/datamapper/dm-core/blob/master/lib/dm-core/adapters/in_memory_adapter.rb

To see examples of doing query build etc, look at others, yep :)

[Markus Schirp]

Yeah this is a better idea as you can start pusing only small slices of
functionallity to the real db doing the rest in memory.

Like when implementing veritas adapters.

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[Zhi-Qiang Lei]

Actually, the document of the AbstractAdapter has told everything you need. Just implement #create, #update, #read, #delete methods. I have an adapter for Parse if it can help.

On Aug 3, 2012, at 8:11 PM, Greg wrote:

Hi all

I'm looking to create a new adapter for DataMapper. Is there a template that I can use as a starting point, or a document that I can refer to that explains the process?

Thanks

Greg

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Best regards,
Zhi-Qiang Lei

zhiqia...@gmail.com

[Greg]

Sorry for the late reply, I didn't receive any notifications for some reason.

Thank you all for your suggestions. I will look into the three options posted above.

Regards

Greg