com.bea.netuix.servlets.l10n
Class L10nResourceManager

java.lang.Object
  com.bea.netuix.servlets.l10n.L10nResourceManager

public class L10nResourceManager

extends Object

The L10nResourceManager helps resolve resources (such as JSP pages, static resources such as HTML files, images etc.) based on a given locale.

Given a resource path in the form [dir]/[name] where [dir] is the directory ("/" separated, relative to the web app root) and [name] is the name of the resource, this class resolves the path to a localized version, if available.

For resolving a resource to a localized version, this class expects the locale to be present in the path structure as a sub-directory.

For instance, the following localized resources are considered valid for a resource "/portlets/news/flash.jsp":

• /en_US/portlets/news/flash.jsp
• /fr_FR/portlets/news/flash.jsp
• /portlets/en_US/news/flash.jsp
• /portlets/fr_FR/news/flash.jsp
• /portlets/news/en_US/flash.jsp
• /portlets/news/fr_FR/flash.jsp

This class resolves a localized version of in the following search order:

• language_country_variant version
• language_country version
• language_variant version
• language version
• country_variant version
• country version
• Non-localized version

In order to enable this class to recognize newly added or deleted resources after server startup, enable hot deployment for classes via the WebLogic Server admin console.

Constructor Summary

protected

L10nResourceManager(ServletContext context) Constructs an instance of L10nResourceManager for the given context.

Method Summary

void	ensureReloaded() Ensures that the cached resources are fresh.
static L10nResourceManager	getInstance(ServletContext context) Returns an instance of L10nResourceManager.
Enumeration	getPreferredLocales(ServletRequest request) Accessor for getting an Enumeration of preferred locales based on both the request and the setting of the internal localeProvider object, which is optionally overrideable by developers.
ArrayList	getPreferredLocalesAsList(ServletRequest request) Accessor for getting an ordered collection of preferred locales.
String	resolve(String path, Enumeration locales) Resolves the given path per the given locales to a localized resource.
String	resolve(String path, Enumeration locales, ResolvedLocale resolvedLocale) Resolves the given path per the given locales to a localized resource.
String	resolve(String path, ServletRequest request) Resolves the given path per the given locales to a localized resource.
String	resolve(String path, ServletRequest request, ResolvedLocale resolvedLocale) Resolves the given path per the given locales to a localized resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

L10nResourceManager

protected L10nResourceManager(ServletContext context)

Constructs an instance of L10nResourceManager for the given context.

Method Detail

ensureReloaded

public void ensureReloaded()

Ensures that the cached resources are fresh.

getInstance

public static L10nResourceManager getInstance(ServletContext context)

Returns an instance of L10nResourceManager.

Parameters:

context - servlet context

Returns:

the singleton instance of L10nResourceManager

getPreferredLocales

public Enumeration getPreferredLocales(ServletRequest request)

Accessor for getting an Enumeration of preferred locales based on both the request and the setting of the internal localeProvider object, which is optionally overrideable by developers.

Parameters:

request - current ServletRequest

Returns:

Enumeration containing preferred Locale objects as determined from the request by the configured LocaleProvider

getPreferredLocalesAsList

public ArrayList getPreferredLocalesAsList(ServletRequest request)

Accessor for getting an ordered collection of preferred locales. Used in places where l10nManager cannot be used directly, but where a collection may be passed to a consumer of locales.

Parameters:

request - current ServletRequest

Returns:

ArrayList containing Locale objects

resolve

public String resolve(String path,
                      Enumeration locales)

Resolves the given path per the given locales to a localized resource. Applications may use this method to resolve resources such as JSP pages, or other static resources to locales.

Parameters:

path - path to the resource

locales - preferred Locales to use for resolution

Returns:

the localized path to the resource if present, otherwise returns the default path to the resource.

resolve

public String resolve(String path,
                      Enumeration locales,
                      ResolvedLocale resolvedLocale)

Resolves the given path per the given locales to a localized resource. Applications may use this method to resolve resources such as JSP pages, or other static resources to locales.

This version of resolve accepts an out argument that is populated with extra resolution information.

Parameters:

path - path to the resource

locales - preferred Locales to use for resolution

resolvedLocale - ResolvedLocale object to populate with resolution information

Returns:

the localized path to the resource if present, otherwise returns the default path to the resource.

resolve

public String resolve(String path,
                      ServletRequest request)

Resolves the given path per the given locales to a localized resource. Applications may use this method to resolve resources such as JSP pages, or other static resources to locales.

Parameters:

path - path to the resource

request - current ServletRequest

Returns:

the localized path to the resource if present, otherwise returns the default path to the resource.

resolve

public String resolve(String path,
                      ServletRequest request,
                      ResolvedLocale resolvedLocale)

Resolves the given path per the given locales to a localized resource. Applications may use this method to resolve resources such as JSP pages, or other static resources to locales.

This version of resolve accepts an out argument that is populated with extra resolution information.

Parameters:

path - path to the resource

request - current ServletRequest

resolvedLocale - ResolvedLocale object to populate with resolution information

Returns:

the localized path to the resource if present, otherwise returns the default path to the resource.