Re: [WebMacro-user] Cache templets

[Lane S. <la...@op...>]

Hi Lars,

For the application you describe below, typically you will have a nested 
set of caches for the output. Capturing the output from an evaluation is 
pretty easy:

String value = wmCache.getValue(webContext)
if (value == null)
{
    value = template.evaluate();
    wmCache.put(webContext, value);
}

The above is an outline; there are many other factors to consider such 
as the session and so forth (is the content evaluated differently for 
different users, etc, etc, etc).

Let me know if this helps.

-Lane

Lars George wrote:

> Hi Lane,
>
> With that caching provider, how would you cache a separate piece of 
> content, which is part of the overall page. I assumed providers are 
> for resources, like templates, which means the whole template is 
> cached. Also, where is the distinction between caching the parsed 
> content and caching the actual output. See, I do not want to cache the 
> query results but use them to create the content and cache that instead.
>
> I trust you meant that somehow but I am not sure about it. Also, would 
> you be able to tell me which classes are involved?
>
> Thanks,
> Lars
>
>
> Lane Sharman wrote:
>
>> Hi Lars,
>>
>> Caching has been discussed a lot and there is a caching provider 
>> interface so you can write your own caching implementation. (As I 
>> have done).
>>
>> To cache individual objects, you can use a global service model to 
>> cache individual templates (eg, connection.wmt, statements.wmt, etc.) 
>> and objects (queryResultReference, queryResultDomain, 
>> queryResultTransaction, etc). With this kind of a model, you cache 
>> both the template elements and the results according to memory and 
>> invalidation events.
>>
>> I have done all of the above for http://www.opendoors.com
>>
>> Good luck.
>>
>> Kindest,
>>
>> lane
>>  
>
>
>
>
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