Package org.apache.struts2

Interface UnknownHandler

public interface UnknownHandler

Handles cases when the result or action is unknown.

This allows other classes like Struts plugins to provide intelligent defaults easier.

Method Summary

Modifier and Type	Method	Description
ActionConfig	handleUnknownAction(String namespace, String actionName)	Handles the case when an action configuration is unknown.
Object	handleUnknownActionMethod(Object action, String methodName)	Handles the case when an action method cannot be found.
Result	handleUnknownResult(ActionContext actionContext, String actionName, ActionConfig actionConfig, String resultCode)	Handles the case when a result cannot be found for an action and result code.

Method Details

handleUnknownAction

ActionConfig handleUnknownAction(String namespace,
 String actionName)
                          throws StrutsException

Handles the case when an action configuration is unknown. Implementations can return a new ActionConfig to be used to process the request.

Parameters:

namespace - The namespace

actionName - The action name

Returns:

An generated ActionConfig, can return null

Throws:

StrutsException - in case of errors

handleUnknownResult

Result handleUnknownResult(ActionContext actionContext,
 String actionName,
 ActionConfig actionConfig,
 String resultCode)
                    throws StrutsException

Handles the case when a result cannot be found for an action and result code.

Parameters:

actionContext - The action context

actionName - The action name

actionConfig - The action config

resultCode - The returned result code

Returns:

A result to be executed, can return null

Throws:

StrutsException - in case of errors

handleUnknownActionMethod

Object handleUnknownActionMethod(Object action,
 String methodName)

Handles the case when an action method cannot be found. This method is responsible both for finding the method and executing it.

Parameters:

action - The action object

methodName - The method name to call

Returns:

The result returned from invoking the action method, can return null if this instance cannot handle such methodName to allow other handlers give a chance

Since:

2.1