Arne - thank you so much. Now I understand.

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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