Struts 2 Namespaces

[Timothy Orme <to...@genome.med.harvard.edu>]

Hello All,

	I just have a quick question concerning struts 2 namespaces. Mainly, are they unique?

	I have a book "Practical Apache Struts 2 Web 2.0 Projects" which states that:

	"The name attribute as well as the namespace attribute must be unique. If not Struts 2 will not startup correctly.".

	Which seems like the straight answer to my question, but upon trying this I found it to not be true. I am able to define 2 packages with the same namespace ala:

	<package name="testPrivatePages" extends="private" namespace="/test">

	<package name="testPublicPages" extends="public" namespace="/test">

	And all actions in both these packages work correctly. So am I setting myself up for disaster here, or is this a acceptable declaration? If it's ok, then is there some rule as to how Struts 2 will 
differentiate between 2 actions with the same name, but in different packages?

Thanks,
Tim

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Re: Struts 2 Namespaces

[Timothy Orme <to...@genome.med.harvard.edu>]

Right, but I'm wondering what happens if 2 packages have the SAME namespace and each have an action with the same name like:

<package name="testPrivatePages" extends="private" namespace="/test">
	<action name="testAction"> etc.

<package name="testPublicPages" extends="public" namespace="/test">
	<action name="testAction"> etc.

Which one gets selected?

-Tim

Martin Gainty wrote:
> extends attribute:
> The extends attribute is optional and allows one package to inherit the 
> configuration of one or more previous packages - including all 
> interceptor, interceptor-stack, and action configurations.
> http://struts.apache.org/2.0.14/docs/package-configuration.html
> but a package can be abstract which means NO action available so dont 
> use package for assigning action
> 
> namespace attribute:
> The namespace attribute subdivides action configurations into logical 
> modules, each with its own identifying prefix. Namespaces avoid 
> conflicts between action names. Each namespace can have its own "menu" 
> or "help" action, each with its own implementation. While the prefix 
> appears in the browser URI, the tags are "namespace aware", so the 
> namespace prefix does not need to be embedded in forms and links.
> http://struts.apache.org/2.0.14/docs/namespace-configuration.html
> 
> if a request for /barspace/bar.action is made then namespace barspace is 
> searched for bar action
> this addresses your requirement for same action name but using differing 
> namespace
> 
> HTH
> Martin
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> 
>  > Date: Thu, 7 May 2009 11:26:07 -0400
>  > From: torme@genome.med.harvard.edu
>  > To: user@struts.apache.org
>  > Subject: Struts 2 Namespaces
>  >
>  > Hello All,
>  >
>  > I just have a quick question concerning struts 2 namespaces. Mainly, 
> are they unique?
>  >
>  > I have a book "Practical Apache Struts 2 Web 2.0 Projects" which 
> states that:
>  >
>  > "The name attribute as well as the namespace attribute must be 
> unique. If not Struts 2 will not startup correctly.".
>  >
>  > Which seems like the straight answer to my question, but upon trying 
> this I found it to not be true. I am able to define 2 packages with the 
> same namespace ala:
>  >
>  > <package name="testPrivatePages" extends="private" namespace="/test">
>  >
>  > <package name="testPublicPages" extends="public" namespace="/test">
>  >
>  > And all actions in both these packages work correctly. So am I 
> setting myself up for disaster here, or is this a acceptable 
> declaration? If it's ok, then is there some rule as to how Struts 2 will
>  > differentiate between 2 actions with the same name, but in different 
> packages?
>  >
>  > Thanks,
>  > Tim
>  >
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