WebWork 2 : Interceptor Order

This page last changed on Nov 30, 2004 by jcarreira.

Interceptors provide an excellent means to wrap before/after processing. The concept reduces code duplication (think AOP).

Order of interceptors…

<interceptor-stack name="xaStack"> 
  <interceptor-ref name="thisWillRunFirstInterceptor"/>
  <interceptor-ref name="thisWillRunNextInterceptor"/>
  <interceptor-ref name="followedByThisInterceptor"/>
  <interceptor-ref name="thisWillRunLastInterceptor"/>
</interceptor-stack>

Note that some interceptors will interrupt the stack/chain/flow… so the order is very important.

Iterceptors implementing com.opensymphony.xwork.interceptor.PreResultListener will run after the Action executes its action method but before the Result executes

thisWillRunFirstInterceptor
  thisWillRunNextInterceptor
    followedByThisInterceptor
      thisWillRunLastInterceptor
        MyAction1
        MyAction2 (chain)
        MyPreResultListener  
        MyResult (result)
      thisWillRunLastInterceptor
    followedByThisInterceptor
  thisWillRunNextInterceptor
thisWillRunFirstInterceptor

Document generated by Confluence on Dec 14, 2004 16:36