[jboss-user] [JBoss Seam] - Re: Searchengine friendly links

[spambob]

Hi Gavin,

now I wrote me a little filter which extracts request scoped variables from a URL and forwards to some target page.

I.e. from a URL "http://www.example.com/products/12345.xhtml" a request variable 'productId' with value '12345' is extracted and the request is forwarded to /showProduct.xhtml.
The product reference I use in showProduct.xhtml via EL is created by a @Factory annotated method that uses a 'productId' attribute of the same class to know which product to load.

This works fine when the productId is injected in the class with the @In annotation but not when I use the @RequestParameter annotation - which I would prefer because I'm not sure if the @In solution would be threadsafe - because the 'productId' is in the attribute map and not in the parameter map of the request. Further there's no method to add an additional parameter.

So the possible solutions I can think of are:

1. add a wrapper around every request in the filter - I don't like that because it would be quite an overhead just to set these parameters

2. use @In(scope=EVENT) - I'm not sure if there would be any impacts on performance / scalability

3. we get a @RequestAttribute annotation (like the @RequestParameter but for the attribute map of the request)

4. It is somehow possible to pass parameters to a factory method - i like that one but found no examples for it, is it possible?

So: how would you solve that and would there be any difference between 2nd and 3rd?

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