org.springframework.web.struts
Class DelegatingActionUtils

java.lang.Object
  org.springframework.web.struts.DelegatingActionUtils

public abstract class DelegatingActionUtils
extends Object

Common methods for letting Struts Actions work with a Spring WebApplicationContext.

As everything in Struts is based on concrete inheritance, we have to provide an Action subclass (DelegatingActionProxy) and two RequestProcessor subclasses (DelegatingRequestProcessor and DelegatingTilesRequestProcessor). The only way to share common functionality is a utility class like this one.

Since:

1.0.2

Author:

Juergen Hoeller

See Also:

DelegatingActionProxy, DelegatingRequestProcessor, DelegatingTilesRequestProcessor

Field Summary

protected static Log

logger

Constructor Summary

DelegatingActionUtils()

Method Summary

static String	determineActionBeanName(ActionMapping mapping) Default implementation of Action bean determination, taking the mapping path and prepending the module prefix, if any.
static WebApplicationContext	findRequiredWebApplicationContext(ActionServlet actionServlet, ModuleConfig moduleConfig) Find most specific context available: check ContextLoaderPlugIn's WebApplicationContext first, fall back to root WebApplicationContext else.
static WebApplicationContext	getRequiredWebApplicationContext(ActionServlet actionServlet, ModuleConfig moduleConfig) Fetch ContextLoaderPlugIn's WebApplicationContext from the ServletContext.
static WebApplicationContext	getWebApplicationContext(ActionServlet actionServlet, ModuleConfig moduleConfig) Fetch ContextLoaderPlugIn's WebApplicationContext from the ServletContext.

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected static final Log logger

Constructor Detail

DelegatingActionUtils

public DelegatingActionUtils()

Method Detail

getWebApplicationContext

public static WebApplicationContext getWebApplicationContext(ActionServlet actionServlet,
                                                             ModuleConfig moduleConfig)

Fetch ContextLoaderPlugIn's WebApplicationContext from the ServletContext.

Checks for a module-specific context first, falling back to the context for the default module else.

Parameters:

actionServlet - the associated ActionServlet

moduleConfig - the associated ModuleConfig (can be null)

Returns:

the WebApplicationContext, or null if none

See Also:

ContextLoaderPlugIn.SERVLET_CONTEXT_PREFIX

getRequiredWebApplicationContext

public static WebApplicationContext getRequiredWebApplicationContext(ActionServlet actionServlet,
                                                                     ModuleConfig moduleConfig)
                                                              throws IllegalStateException

Fetch ContextLoaderPlugIn's WebApplicationContext from the ServletContext.

Checks for a module-specific context first, falling back to the context for the default module else.

Parameters:

actionServlet - the associated ActionServlet

moduleConfig - the associated ModuleConfig (can be null)

Returns:

the WebApplicationContext

Throws:

IllegalStateException - if no WebApplicationContext could be found

See Also:

ContextLoaderPlugIn.SERVLET_CONTEXT_PREFIX

findRequiredWebApplicationContext

public static WebApplicationContext findRequiredWebApplicationContext(ActionServlet actionServlet,
                                                                      ModuleConfig moduleConfig)
                                                               throws IllegalStateException

Find most specific context available: check ContextLoaderPlugIn's WebApplicationContext first, fall back to root WebApplicationContext else.

When checking the ContextLoaderPlugIn context: checks for a module-specific context first, falling back to the context for the default module else.

Parameters:

actionServlet - the associated ActionServlet

moduleConfig - the associated ModuleConfig (can be null)

Returns:

the WebApplicationContext

Throws:

IllegalStateException - if no WebApplicationContext could be found

See Also:

getWebApplicationContext(org.apache.struts.action.ActionServlet, org.apache.struts.config.ModuleConfig), WebApplicationContextUtils.getRequiredWebApplicationContext(javax.servlet.ServletContext)

determineActionBeanName

public static String determineActionBeanName(ActionMapping mapping)

Default implementation of Action bean determination, taking the mapping path and prepending the module prefix, if any.

Parameters:

mapping - the Struts ActionMapping

Returns:

the name of the Action bean

See Also:

ActionConfig.getPath(), ModuleConfig.getPrefix()