I'm still having trouble with this, so testing out with a simpler
dataset. I can get the unfiltered data to display,but I can't get the
filter to work.
This is the layer definition in my OpenLayers init() function:
var sppfilter = "taxa_taxon_list_id=3";
// create WMS tetrads layer - individual species can be filtered on
var wmstetrads = new OpenLayers.Layer.WMS(
"Tetrads",
"http://www.alanhale.co.uk:8080/geoserver/gwc/service/wms";,
{'layers': 'indicia_test:detail_occurrences',
'CQL_FILTER':sppfilter,'format':'image/png', 'transparent':'true'},
{'opacity': 0.6, 'isBaseLayer': false, 'visibility': true}
);
And here is my parameterFilter in geowebcache.xml:
<parameterFilters>
<regexParameterFilter>
<key>taxa_taxon_list_id</key>
<defaultValue>1</defaultValue>
<regex>^(.+)$</regex>
</regexParameterFilter>
</parameterFilters>
Grateful for any further guidance
Alan
On 28/11/2010 18:48, Arne Kepp wrote:
> The key is correct. The floatParameterFilter tries to avoid
> duplicates, but in order to do so it needs to know all the possible
> values*.
>
> A regexParameterFilter just treats the numbers as a text, and matches
> it againt a pattern. So it doesn't need to know the 6000 values in
> advance.
>
> -Arne
>
> *: If you code, you know how you never compare floating point numbers
> directly, you just check that the difference is sufficiently small?
> This is the same idea.
>
>
> On 11/28/10 12:53 PM, Alan Hale wrote:
>> Thank you Arne
>>
>> I'm not sure I understand the second point. My filter looks like this:
>> "specid=x" where x is a decimal value from one of over 6000
>> possibilities. They are all of the same format. I assume "specid" is
>> entered within the<key> element tags.
>>
>> Alan
>>
>>
>>
>> On 28/11/2010 10:16, Arne Kepp wrote:
>>> Yes, you'll have to construct a configuration file. Make sure you give
>>> layers new names, otherwise you'll have a hard time finding errors.
>>>
>>> If you want a wildcard filter you should use the regular expression
>>> filter, and set it up for the types of numbers your backend supports.
>>>
>>> Note that GWC currently provides no facilities for seeding or removing
>>> tiles that use such filters.
>>>
>>> -Arne
>>>
>>>
>>> On 11/28/10 10:58 AM, Alan Hale wrote:
>>>> Many thanks Arne
>>>>
>>>> So, if I understand correctly, I have to construct my own
>>>> geowebcache.xml which will include details of any layer for which I
>>>> wish
>>>> to call GWC, and place under data_dir/gwc/.
>>>>
>>>> Can I assume that (in<floatParameterFilter>) the<values> entries are
>>>> optional? My values can be any one of over 6000 decimal numbers. In
>>>> fact, am I expecting too much of GWC to cope with this in any case?
>>>>
>>>> Regards
>>>>
>>>> Alan
>>>>
>>>> On 26/11/2010 15:03, Arne Kepp wrote:
>>>>> Hi,
>>>>>
>>>>> have a look at
>>>>>
>>>>> https://github.com/GeoWebCache/geowebcache/blob/1.1.2/geowebcache/src/main/resources/geowebcache.xml
>>>>>
>>>>>
>>>>>
>>>>>
>>>>>
>>>>> -Arne
>>>>>
>>>>>
>>>>> On 11/26/10 3:24 PM, Alan Hale wrote:
>>>>>> Hi
>>>>>>
>>>>>> I am just starting to look at GeoWebCache (I'm with
>>>>>> Geoserver-2.0.2) and
>>>>>> see from the documentation that you can use Parameter Filters to
>>>>>> handle
>>>>>> CQL filters set by the client - which is just what I need. But the
>>>>>> documentation is incomplete and refers the reader to the
>>>>>> comprehensive
>>>>>> configuration example and the XSD documentation. The configuration
>>>>>> example also says TODO and there are no details. I cannot find
>>>>>> relevant
>>>>>> XSD documentation. Could anyone kindly give me some pointers?
>>>>>>
>>>>>> Many thanks
>>>>>>
>>>>>> Alan Hale
>
>
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>
>
>
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