Add mapping feature to models

[mikehaertl]

Alternatively to the mapping file, we could keep the mapping definition inside the model.

I'd suggest a syntax like this:

public function elasticMapping()
{
    return array(
        'id' => array('type' => 'integer'),
        'name' => array('type' => 'string', 'index'=>'not_analyzed'),
        ...
    );
}

Then ./yiic elastic map --model=<model> would use the data above to find the right mapping.

Not sure, if we should also automate this for the regular auto-indexing on save(). This would require a check on every save operation, whether the mapping exists. Probably a bit too extreme.

[mikehaertl]

@phpnode Any opinion on this?

[phpnode]

👍