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Java Source Code / Java Documentation » J2EE » webwork 2.2.6 » com.opensymphony.xwork.interceptor 
Source Cross Reference  Class Diagram Java Document (Java Doc) 


java.lang.Object
   com.opensymphony.xwork.interceptor.AroundInterceptor
      com.opensymphony.xwork.interceptor.AliasInterceptor

AliasInterceptor
public class AliasInterceptor extends AroundInterceptor (Code)
The aim of this Interceptor is to alias a named parameter to a different named parameter. By acting as the glue between actions sharing similiar parameters (but with different names), it can help greatly with action chaining.

Action's alias expressions should be in the form of #{ "name1" : "alias1", "name2" : "alias2" }. This means that assuming an action (or something else in the stack) has a value for the expression named name1 and the action this interceptor is applied to has a setter named alias1, alias1 will be set with the value from name1.

Interceptor parameters:

  • aliasesKey (optional) - the name of the action parameter to look for the alias map (by default this is aliases).

Extending the interceptor:

This interceptor does not have any known extension points.

Example code:

 
 <action name="someAction" class="com.examples.SomeAction">
 <!-- The value for the foo parameter will be applied as if it were named bar -->
 <param name="aliases">#{ 'foo' : 'bar' }</param>
 <!-- note: the alias interceptor is included with the defaultStack in webwork-default.xml -->
 <interceptor-ref name="alias"/>
 <interceptor-ref name="basicStack"/>
 <result name="success">good_result.ftl</result>
 </action>
 
 

author:
   Matthew Payne


Field Summary
protected  StringaliasesKey
    


Method Summary
protected  voidafter(ActionInvocation invocation, String result)
    
protected  voidbefore(ActionInvocation invocation)
    
public  voiddestroy()
    
public  voidinit()
    
public  voidsetAliasesKey(String aliasesKey)
    

Field Detail
aliasesKey
protected String aliasesKey(Code)





Method Detail
after
protected void after(ActionInvocation invocation, String result) throws Exception(Code)



before
protected void before(ActionInvocation invocation) throws Exception(Code)



destroy
public void destroy()(Code)



init
public void init()(Code)



setAliasesKey
public void setAliasesKey(String aliasesKey)(Code)



Fields inherited from com.opensymphony.xwork.interceptor.AroundInterceptor
protected transient Log log(Code)(Java Doc)

Methods inherited from com.opensymphony.xwork.interceptor.AroundInterceptor
abstract protected void after(ActionInvocation dispatcher, String result) throws Exception(Code)(Java Doc)
abstract protected void before(ActionInvocation invocation) throws Exception(Code)(Java Doc)
public void destroy()(Code)(Java Doc)
public void init()(Code)(Java Doc)
public String intercept(ActionInvocation invocation) throws Exception(Code)(Java Doc)

Methods inherited from java.lang.Object
native protected Object clone() throws CloneNotSupportedException(Code)(Java Doc)
public boolean equals(Object obj)(Code)(Java Doc)
protected void finalize() throws Throwable(Code)(Java Doc)
final native public Class getClass()(Code)(Java Doc)
native public int hashCode()(Code)(Java Doc)
final native public void notify()(Code)(Java Doc)
final native public void notifyAll()(Code)(Java Doc)
public String toString()(Code)(Java Doc)
final native public void wait(long timeout) throws InterruptedException(Code)(Java Doc)
final public void wait(long timeout, int nanos) throws InterruptedException(Code)(Java Doc)
final public void wait() throws InterruptedException(Code)(Java Doc)

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