Overriding subset of interceptor params
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Key: WW-2595
URL: https://issues.apache.org/struts/browse/WW-2595
Project: Struts 2
Issue Type: Bug
Affects Versions: 2.0.11
Reporter: Jon Wilmoth
Trying to override one of three interceptor parameters in an action specific
config using method #2 described in
http://struts.apache.org/2.0.11.1/docs/interceptors.html#Interceptors-InterceptorParameterOverriding
leaves the params that aren't overridden in the action (but defined in stack
definition) null. Unfortunately, the other two parameters that I'm not
overriding are not being taken from the default stack definition and are ending
up as null on the interceptor. Below is a sample action config showing what
I'm attempting...
<package name="packageA"...>
<interceptors>
<interceptor name="myInterceptor" class="..."/>
<interceptor-stack name="myStack">
<interceptor-ref name="defaultStack"/>
<interceptor-ref name="myInterceptor">
<param name="paramA">defaultValueA</param>
<param name="paramB">defaultValueB</param>
<param name="paramC">defaultValueC</param>
</interceptor-ref>
</interceptor-stack>
</package>
With the following action config, the "myInterceptor" interceptor's paramA &
paramB are null (causing the interceptor logic to break) and not
"defaultValueA" and "defaultValueB" as expected/desired.
<package name="packageB" extends="packageA"...>
<action name="myAction" class="myActionClass">
<interceptor-ref name="myStack">
<param name="myInterceptor.paramC">actionSpecificValue</param>
</interceptor-ref>
</action>
</package>
BTW...defining the action with all parameters overridden (see below) works:
<action name="myAction" class="myActionClass">
<interceptor-ref name="myStack">
<!-- same value as defined in "myStack" declaration -->
<param name="myInterceptor.paramA">defaultValueA</param>
<!-- same value as defined in "myStack" declaration -->
<param name="myInterceptor.paramB">defaultValueB</param>
<param name="myInterceptor.paramC">actionSpecificValue</param>
</interceptor-ref>
</action>
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