iresourcestreamlocator.java

Wicket一个开发Java Web应用程序框架。它使得开发web应用程序变得容易而轻松。 Wicket利用一个POJO data beans组件使得它可以与任何持久层技术相结合。

/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */
package org.apache.wicket.util.resource.locator;

import java.util.Locale;

import org.apache.wicket.util.resource.IResourceStream;


/**
 * Interface for code that locates resources.
 * 
 * @author Jonathan Locke
 */
public interface IResourceStreamLocator
{
	/**
	 * Loads a resource, given a path and class. Typically this method is either called by external
	 * clients if they are not interested in a lookup that takes the style and locale into account,
	 * or it is called by the implementation of
	 * {@link #locate(Class, String, String, Locale, String)} where the latter just takes care of
	 * trying out the different combinations for the provided style and locale and uses this method
	 * to actually load the resource stream.
	 * 
	 * @param clazz
	 *            The class loader for delegating the loading of the resource
	 * @param path
	 *            The path of the resource
	 * 
	 * @return The resource or null
	 */
	public IResourceStream locate(Class clazz, String path);

	/**
	 * Loads a resource, given a path, style, locale and extension.
	 * 
	 * @param clazz
	 *            The class loader for delegating the loading of the resource
	 * @param path
	 *            The path of the resource
	 * @param style
	 *            Any resource style, such as a skin style (see {@link org.apache.wicket.Session})
	 * @param locale
	 *            The locale of the resource to load
	 * @param extension
	 *            The extension of the resource
	 * 
	 * @return The resource or null
	 */
	public IResourceStream locate(Class clazz, String path, String style, Locale locale,
			String extension);
}