wicket.util.resource.locator
Class AbstractResourceStreamLocator

java.lang.Object
  wicket.util.resource.locator.AbstractResourceStreamLocator

All Implemented Interfaces:

IResourceStreamLocator

Direct Known Subclasses:

ClassLoaderResourceStreamLocator, PathResourceStreamLocator, ResourceFinderResourceStreamLocator

public abstract class AbstractResourceStreamLocator

extends java.lang.Object

implements IResourceStreamLocator

Base class for implementing IResourceLocators.

Contains the logic to locate a resource based on a path, a style (see Session), a locale and an extension string. The full filename will be built like: <path>_<style>_<locale>.<extension>.

Resource matches will be attempted in the following order:

1. 1. <path>_<style>_<locale>.<extension>
2. 2. <path>_<locale>.<extension>
3. 3. <path>_<style>.<extension>
4. 4. <path>.<extension>

Locales may contain a language, a country and a region or variant. Combinations of these components will be attempted in the following order:

1. locale.toString() see javadoc for Locale for more details
2. <language>_<country>
3. <language>

Author:

Juergen Donnerstag, Jonathan Locke

Constructor Summary

protected

AbstractResourceStreamLocator() Constructor

Method Summary

protected abstract IResourceStream	locate(java.lang.ClassLoader classLoader, java.lang.String path) Subclass implementation locates the resource at the given path.
IResourceStream	locate(java.lang.ClassLoader classLoader, java.lang.String path, java.lang.String style, java.util.Locale locale, java.lang.String extension) Locate a resource.

Methods inherited from class java.lang.Object

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

Constructor Detail

AbstractResourceStreamLocator

protected AbstractResourceStreamLocator()

Constructor

Method Detail

locate

public IResourceStream locate(java.lang.ClassLoader classLoader,
                              java.lang.String path,
                              java.lang.String style,
                              java.util.Locale locale,
                              java.lang.String extension)

Locate a resource. See class comments for more details.

Specified by:

locate in interface IResourceStreamLocator

Parameters:

classLoader - class loader

path - The path of the resource without extension

style - A theme or style (see Session)

locale - The Locale to apply

extension - the filname's extensions

Returns:

The Resource, or null if not found.

locate

protected abstract IResourceStream locate(java.lang.ClassLoader classLoader,
                                          java.lang.String path)

Subclass implementation locates the resource at the given path. Different subclasses may take different approaches to the search.

Parameters:

classLoader - class loader

path - The complete path of the resource to locate. Separators must be forward slashes.

Returns:

The Resource, or null if not found.