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From Jeremy Quinn <jer...@luminas.co.uk>
Subject Re: Avalon Context from FlowScript
Date Mon, 14 Jun 2004 08:59:55 GMT

On 13 Jun 2004, at 22:27, Sylvain Wallez wrote:

> Jeremy Quinn wrote:
>
>> Hi All
>>
>> I am working on a search form to add to the Lucene samples, that uses 
>> CForms to manipulate a QueryBean that performs queries for you. The 
>> Bean assembles LuceneQueries directly, so you don't use text 
>> expressions, you add Criteria to the Query's CForms repeater.
>>
>> I am trying to work out how to get the Avalon Context's 
>> "Constants.CONTEXT_WORK_DIR" from within FlowScript.
>>
>> I think I must be confused between 
>> org.apache.avalon.framework.context.Context and
>> org.apache.cocoon.environment.Context.
>>
>> My FlowScript gets a LuceneCocoonSearcher and needs to set it's 
>> Directory, all of the other Components that use this Searcher are 
>> contextualized, so have access to the work directory (which is the 
>> default location for Lucene Indexes).
>>
>> Is there a way to do this from FlowScript?
>
>
> Yes, indirectly, by calling cocoon.createObject on the following class:
>
> public void ContextAccess implements Contextualizable {
>    Context avalonContext;
>
>    public void contextualize(Context avalonContext) {
>        this.avalonContext = avalonContext;
>    }
>
>    Context getAvalonContext() {
>        return this.avalonContext;
>    }
> }
>
> And in your flowscript just type:
>  var avalonContext = 
> cocoon.createObject(my.package.ContextAccess).avalonContext;
>

Many thanks.


>
> This also has some interesting side effects as the full, unrestricted 
> object model is available through the Avalon context (see 
> ContextHelper).
>
> Remember "Less is more... or less" [1]? I really think it's time to 
> remove the arbitrary limitations of the FOM.

Because I would otherwise be committing this class to Cocoon, as it is 
needed for what I am adding to Lucene, and it makes a mockery of the 
limitations .....

> Sylvain

many thanks for your help.

regards Jeremy

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