On Tuesday, February 26, 2013 09:01:52 PM Justin Deoliveira wrote:
> Hi folks,
>
> Unless i am mistaken it is not currently possible to create a simple equals
> filter that involves a date literal? Quite simply what I would like to do
> is be able to parse a filter like:
>
> foo = 2006-12-31T01:30:00Z
Right, the valid predicated are
<temporal predicate> ::=
<attribute_name> "BEFORE" <date-time expression>
| <attribute_name> "BEFORE OR DURING" <period>
| <attribute_name> "DURING" <period>
| <attribute_name> "DURING OR AFTER" <period>
| <attribute_name> "AFTER" <date-time expression>
>
> I tried expressing this filter with the existing temporal predicates but
> couldn't figure out a way to do it.
Did you try DURING? something like:
foo DURING 2006-12-31T01:30:00Z/2006-12-31T01:30:00Z
>
> Is there any reason not to support date literals in the existing non
> temporal predicates?
Well, in the OGC specification the syntax is
<date-time expression ::= <date-time> | <period>
<full_date> ::= <date-year> "-" <date-month> "-" <date-day>
<date-year> ::= <digit><digit><digit><digit>
<date-month> ::= <digit><digit>
<date-day> ::= <digit><digit>
I think we could add a new predicate
::= <attribute_name> EQUAL <date-time expression>
To CQL
>
> Anyways, I took a crack at a patch for this:
>
>
> https://github.com/jdeolive/geotools/commit/70bfc8819fc8751382f9e75f4ecd293f
> eec0c280
>
> But fully admin i am not very familiar with the CQL module so my approach
> might be way off.
OK, I will have a look this week
>
> -Justin
--
Mauricio Pazos
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