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From "Clinton Begin" <clinton.be...@gmail.com>
Subject Re: Direct-to-Field mappings now implemented.
Date Wed, 14 Feb 2007 14:14:09 GMT
Yes, we decided against a special syntax for fields.

How did you do implement yours?

Cheers,
Clinton

On 2/14/07, Niels Beekman <n.beekman@wis.nl> wrote:
> Hi Clinton,
>
> I have been using something like this (custom written) for over a year,
> and was happy to see it implemented in iBATIS, just when I was about to
> try the new syntax I saw your commit log:
>
> "Changed syntax of field mappings to be exactly the same as property
> mappings. It now decides to use field mappings only if set/get methods
> do not exist."
>
> Does this mean it can only be used as a fallback? That would be a
> show-stopper for me, since I use it to prevent issues when loading
> objects from the database. For example: our setters have validation code
> in place which shouldn't be triggered when loading from the database.
>
> Thanks,
>
> Niels
>
> -----Original Message-----
> From: Clinton Begin [mailto:clinton.begin@gmail.com]
> Sent: vrijdag 9 februari 2007 8:45
> To: dev@ibatis.apache.org; user-java@ibatis.apache.org
> Subject: Direct-to-Field mappings now implemented.
>
> Hi all,
>
> I found a few hours tonight to implement direct-to-field mappings.  I
> don't have any energy left to explain it fully, but it's simple to
> use, so here's the summary.
>
> To implement this, I changed the ClassInfo to accept a new pattern of
> "property" access.  You can now wrap a field names in round brackets
> to distinguish them from properties.  So:
>
> "id" is a property.
> "(id)" is a field.
>
> These can be mixed with properties like:
>
> "account.(address).street"
>
> This last point is important and is the primary reason I didn't use a
> new XML tag -- that would have severely limited the mix-n-match
> ability of the feature (and it would have been harder to implement).
>
> This approach works for reads and writes and for both inline or
> external parameter maps and result maps.
>
> It should be ubiquitous.  Anywhere you used to use property names, you
> can now use (field) names too.
>
> Thoughts?  It's not too late to change the syntax (round brackets) or
> anything else.
>
> I think it's the simplest, most flexible and performant approach.
>
> Cheers,
> Clinton
>

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