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Namespaces

The namespace attribute allows you to segregate action configurations into namespaces, so that you may use the same action alias in more than one namespace with different classes, parameters, etc. This is in contrast to Webwork 1.x, where all action names and aliases were global and could not be re-used in an application. The default namespace, which is "" (an empty string) is used as a "catch-all" namespace, so if an action configuration is not found in a specified namespace, the default namespace will also be searched. This allows you to have global action configurations outside of the "extends" hierarchy, as well as to allow the previous Webwork 1.x behavior by not specifying namespaces. It is also intended that the namespace functionality can be used for security, for instance by having the path before the action name be used as the namespace by the Webwork 2.0 ServletDispatcher, thus allowing the use of J2EE declarative security on paths to be easily implemented and maintained.

Namespace example

<package name="default">

    <action name="foo" class="mypackage.simpleAction>
        <result name="success" type="dispatcher">greeting.jsp</result>
    </action>
    <action name="bar" class="mypackage.simpleAction"> 
        <result name="success" type="dispatcher">bar1.jsp</result> 
    </action> 

</package>


<package name="mypackage" namespace="/barspace"> 

    <action name="bar" class="mypackage.simpleAction"> 
        <result name="success" type="dispatcher">bar2.jsp</result> 
    </action> 

</package>

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