Package org.apache.struts.util

Class ModuleUtils

java.lang.Object

org.apache.struts.util.ModuleUtils

public class ModuleUtils
extends Object

General purpose utility methods related to module processing.

Since:

Struts 1.2

Version:

$Rev$

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	ModuleUtils()	Constructor for ModuleUtils.

Method Summary

Modifier and Type	Method	Description
static ModuleUtils	getInstance()	Returns the Singleton instance of TagUtils.
ModuleConfig	getModuleConfig(HttpServletRequest request)	Return the current ModuleConfig object stored in request, if it exists, null otherwise.
ModuleConfig	getModuleConfig(HttpServletRequest request, ServletContext context)	Return the ModuleConfig object is it exists, null otherwise.
ModuleConfig	getModuleConfig(String prefix, HttpServletRequest request, ServletContext context)	Return the desired ModuleConfig object stored in context, if it exists, otherwise return the current ModuleConfig
ModuleConfig	getModuleConfig(String prefix, ServletContext context)	Return the desired ModuleConfig object stored in context, if it exists, null otherwise.
String	getModuleName(HttpServletRequest request, ServletContext context)	Get the module name to which the specified request belong.
String	getModuleName(String matchPath, ServletContext context)	Get the module name to which the specified uri belong.
String[]	getModulePrefixes(ServletContext context)	Return the list of module prefixes that are defined for this web application.
void	selectModule(HttpServletRequest request, ServletContext context)	Select the module to which the specified request belongs, and add corresponding request attributes to this request.
void	selectModule(String prefix, HttpServletRequest request, ServletContext context)	Select the module to which the specified request belongs, and add corresponding request attributes to this request.

Methods inherited from class java.lang.Object

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

Constructor Details

ModuleUtils

protected ModuleUtils()

Constructor for ModuleUtils.

Method Details

getInstance

public static ModuleUtils getInstance()

Returns the Singleton instance of TagUtils.

getModuleConfig

public ModuleConfig getModuleConfig(HttpServletRequest request)

Return the current ModuleConfig object stored in request, if it exists, null otherwise. This method can be used by plugin to retrieve the current module config object. If no moduleConfig is found, this means that the request haven't hit the server throught the struts servlet. The appropriate module config can be set and found with selectModule(HttpServletRequest, ServletContext) .

Parameters:

request - The servlet request we are processing

Returns:

the ModuleConfig object from request, or null if none is set in the request.

getModuleConfig

public ModuleConfig getModuleConfig(String prefix,
 ServletContext context)

Return the desired ModuleConfig object stored in context, if it exists, null otherwise.

Parameters:

prefix - The module prefix of the desired module

context - The ServletContext for this web application

Returns:

the ModuleConfig object specified, or null if not found in the context.

getModuleConfig

public ModuleConfig getModuleConfig(String prefix,
 HttpServletRequest request,
 ServletContext context)

Return the desired ModuleConfig object stored in context, if it exists, otherwise return the current ModuleConfig

Parameters:

prefix - The module prefix of the desired module

request - The servlet request we are processing

context - The ServletContext for this web application

Returns:

the ModuleConfig object specified, or null if not found in the context.

getModuleConfig

public ModuleConfig getModuleConfig(HttpServletRequest request,
 ServletContext context)

Return the ModuleConfig object is it exists, null otherwise.

Parameters:

request - The servlet request we are processing

context - The ServletContext for this web application

Returns:

the ModuleConfig object

getModuleName

public String getModuleName(HttpServletRequest request,
 ServletContext context)

Get the module name to which the specified request belong.

Parameters:

request - The servlet request we are processing

context - The ServletContext for this web application

Returns:

The module prefix or ""

getModuleName

public String getModuleName(String matchPath,
 ServletContext context)

Get the module name to which the specified uri belong.

Parameters:

matchPath - The uri from which we want the module name.

context - The ServletContext for this web application

Returns:

The module prefix or ""

getModulePrefixes

public String[] getModulePrefixes(ServletContext context)

Return the list of module prefixes that are defined for this web application. NOTE - the "" prefix for the default module is not included in this list.

Parameters:

context - The ServletContext for this web application.

Returns:

An array of module prefixes.

selectModule

public void selectModule(HttpServletRequest request,
 ServletContext context)

Select the module to which the specified request belongs, and add corresponding request attributes to this request.

Parameters:

request - The servlet request we are processing

context - The ServletContext for this web application

selectModule

public void selectModule(String prefix,
 HttpServletRequest request,
 ServletContext context)

Select the module to which the specified request belongs, and add corresponding request attributes to this request.

Parameters:

prefix - The module prefix of the desired module

request - The servlet request we are processing

context - The ServletContext for this web application