[mapserver-dev] MapCache Time Dimensions Problem

[Michael Smith]

I've created a timedimension tileset in MapCache and created the backend
sqlite db that has the available times. The mapserver backend handles the
WMS TIME requests without a problem.  And when I query mapcache without a
&TIME=, I get my the default output.

However, if I specify a &TIME= parameter to MapCache (as a WMS or WMTS
request), I get 

no matching entry for given TIME dimension "TIME" in tileset "earthquakes"

I don't know what I need to change to get MapCache to recognize the TIME
parameter. From the docs on RFC-96
(http://mapserver.org/development/rfc/ms-rfc-96.html) I don't see what else
to specify to set MapCache to understand TIME requests.

I can see MapCache making the backend requests to generate images from the
time values in the sqlite DB but only with the default specified in the
<timedimension>. It never understands new ranges passed with &TIME=.

My tileset looks like

<tileset name="earthquakes">
      <source>earthquakes</source>
      <cache>sqlite</cache>
      <grid>GoogleMapsCompatible</grid>
      <format>PNG</format>
      <metatile>5 5</metatile>
      <metabuffer>10</metabuffer>
      <expires>3600</expires>
      <timedimension type="sqlite" default="2014-03-25T12Z" >
       <dbfile>/u02/mapcache/dbtime2.db</dbfile>
       <query>select
strftime('%Y-%m-%dT%H:%M:%SZ',start)||'/'||strftime('%Y-%m-%dT%H:%M:%SZ',end
) from time
              where source_id=:tileset
                and start_time>=datetime(:start_timestamp,'unixepoch')
                and end_time<=datetime(:end_timestamp,'unixepoch')
                order by end_time
       </query>
     </timedimension>
   </tileset>

----
Michael Smith
US Army Corps
Remote Sensing GIS/Center
michael.smith at usace.army.mil



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