Smart way to admit optional items in url path.

I do not know well regexp. Want to include info in the url arrivng the page-flow and want to make optional part of this information. Ive done this like this:

       <page id="escala" path-info="/neuro/([^/]+)" matcher="oxf:perl5-matcher"  default-submission="parametros.xml" model="general/cargar_cuestionarios.xpl" view="${1}/vista_escala.xhtml">
            <setvalue ref="/parametros/id_escala" matcher-group="1"/>
        </page>

        <page id="escalayexpediente" path-info="/neuro/([^/]+)/([^/]+)" matcher="oxf:perl5-matcher"  default-submission="parametros.xml" model="general/cargar_cuestionarios.xpl" view="${1}/vista_escala.xhtml">
            <setvalue ref="/parametros/id_escala" matcher-group="1"/>
            <setvalue ref="/parametros/id_expediente" matcher-group="2"/>
        </page>

        <page id="escalaexpedientefecha" path-info="/neuro/([^/]+)/([^/]+)/([^/]+)" matcher="oxf:perl5-matcher"  default-submission="parametros.xml" model="general/cargar_cuestionarios.xpl" view="${1}/vista_escala.xhtml">
            <setvalue ref="/parametros/id_escala" matcher-group="1"/>
            <setvalue ref="/parametros/id_expediente" matcher-group="2"/>
            <setvalue ref="/parametros/fecha" matcher-group="3"/>
        </page>

Is there a clever and elegant way to doy it in one declaration?

thx
 


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Richard,

On Oct 7, 2008, at 3:18 AM, Richard C. Hidalgo Lorite wrote:

>        <page id="escalaexpedientefecha" path-info="/neuro/([^/]+)/
> ([^/]+)/([^/]+)" matcher="oxf:perl5-matcher"  default-
> submission="parametros.xml" model="general/cargar_cuestionarios.xpl"  
> view="${1}/vista_escala.xhtml">
>            <setvalue ref="/parametros/id_escala" matcher-group="1"/>
>            <setvalue ref="/parametros/id_expediente" matcher-
> group="2"/>
>            <setvalue ref="/parametros/fecha" matcher-group="3"/>
>        </page>


I think you could keep just the 3rd one, using the following regexp  
(added some question marks after the part of the URI which might be  
"missing"):

/neuro/([^/]+)/?([^/]+)?/?([^/]+)?

Alex
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