Hi,

I will now also have time to help in this area.

I had a look at your changes in the MVRTreeMap.RTreeCursor class (method
min). I wrote a (somewhat randomized) test case but couldn't get the
original code to fail so far. I think I understand your changes, but I
believe that there should be a simpler solution... With a good test case
that should be relatively easier to achieve.

About support for "&&", and possibly other new operators: I think it's best
to just hardcode those in the parser. I don't think it's important to allow
custom operators in applications. I wonder what the possible operators are,
and what is the operator precedence.

Regards,
Thomas



On Wed, Jul 3, 2013 at 5:03 PM, Nicolas Fortin (OrbisGIS) <
[email protected]> wrote:

> MVRTreeMap with Spatial Index works fine, really fast.
> https://github.com/nicolas-f/h2database/tree/patch-merge
>
>  The next step is to create this kind of alias capability :
>
>
> CREATE ALIAS ST_INTERSECTS AS ($1 && $2 AND _ST_INTERSECTS($1,$2));
>>
>
> A kind of Sql Alias.
>
> Do you have some comments/advice about this ?
>
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