Spring Framework example source code file (StaticWebApplicationContext.java)

This example Spring Framework source code file (StaticWebApplicationContext.java) is included in the DevDaily.com "Java Source Code Warehouse" project. The intent of this project is to help you "Learn Java by Example" ^TM.

Java - Spring Framework tags/keywords

requestscope, servlet, servletconfig, servletcontext, sessionscope, sessionscope, staticapplicationcontext, staticwebapplicationcontext, staticwebapplicationcontext, string, string, themesource, unsupportedoperationexception, webapplicationcontext, webapplicationcontext

The Spring Framework StaticWebApplicationContext.java source code

/*
 * Copyright 2002-2008 the original author or authors.
 *
 * Licensed 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.springframework.web.context.support;

import javax.servlet.ServletConfig;
import javax.servlet.ServletContext;

import org.springframework.beans.factory.config.ConfigurableListableBeanFactory;
import org.springframework.context.support.StaticApplicationContext;
import org.springframework.core.io.Resource;
import org.springframework.core.io.support.ResourcePatternResolver;
import org.springframework.ui.context.Theme;
import org.springframework.ui.context.ThemeSource;
import org.springframework.ui.context.support.UiApplicationContextUtils;
import org.springframework.web.context.ConfigurableWebApplicationContext;
import org.springframework.web.context.ServletConfigAware;
import org.springframework.web.context.ServletContextAware;
import org.springframework.web.context.request.RequestScope;
import org.springframework.web.context.request.SessionScope;

/**
 * Static {@link org.springframework.web.context.WebApplicationContext}
 * implementation for testing. Not intended for use in production applications.
 *
 * <p>Implements the {@link org.springframework.web.context.ConfigurableWebApplicationContext}
 * interface to allow for direct replacement of an {@link XmlWebApplicationContext},
 * despite not actually supporting external configuration files.
 *
 * <p>Interprets resource paths as servlet context resources, i.e. as paths beneath
 * the web application root. Absolute paths, e.g. for files outside the web app root,
 * can be accessed via "file:" URLs, as implemented by
 * {@link org.springframework.core.io.DefaultResourceLoader}.
 *
 * <p>In addition to the special beans detected by
 * {@link org.springframework.context.support.AbstractApplicationContext},
 * this class detects a bean of type {@link org.springframework.ui.context.ThemeSource}
 * in the context, under the special bean name "themeSource".
 *
 * @author Rod Johnson
 * @author Juergen Hoeller
 * @see org.springframework.ui.context.ThemeSource
 */
public class StaticWebApplicationContext extends StaticApplicationContext
		implements ConfigurableWebApplicationContext, ThemeSource {

	private ServletContext servletContext;

	private ServletConfig servletConfig;

	private String namespace;

	private ThemeSource themeSource;


	public StaticWebApplicationContext() {
		setDisplayName("Root WebApplicationContext");
	}


	/**
	 * Set the ServletContext that this WebApplicationContext runs in.
	 */
	public void setServletContext(ServletContext servletContext) {
		this.servletContext = servletContext;
	}

	public ServletContext getServletContext() {
		return this.servletContext;
	}

	public void setServletConfig(ServletConfig servletConfig) {
		this.servletConfig = servletConfig;
		if (servletConfig != null && this.servletContext == null) {
			this.servletContext = servletConfig.getServletContext();
		}
	}

	public ServletConfig getServletConfig() {
		return this.servletConfig;
	}

	public void setNamespace(String namespace) {
		this.namespace = namespace;
		if (namespace != null) {
			setDisplayName("WebApplicationContext for namespace '" + namespace + "'");
		}
	}

	public String getNamespace() {
		return this.namespace;
	}

	/**
	 * The {@link StaticWebApplicationContext} class does not support this method.
	 * @throws UnsupportedOperationException <b>always
	 */
	public void setConfigLocation(String configLocation) {
		if (configLocation != null) {
			throw new UnsupportedOperationException("StaticWebApplicationContext does not support config locations");
		}
	}

	/**
	 * The {@link StaticWebApplicationContext} class does not support this method.
	 * @throws UnsupportedOperationException <b>always
	 */
	public void setConfigLocations(String[] configLocations) {
		if (configLocations != null) {
			throw new UnsupportedOperationException("StaticWebApplicationContext does not support config locations");
		}
	}

	public String[] getConfigLocations() {
		return null;
	}


	/**
	 * Register request/session scopes, a {@link ServletContextAwareProcessor}, etc.
	 */
	protected void postProcessBeanFactory(ConfigurableListableBeanFactory beanFactory) {
		beanFactory.registerScope(SCOPE_REQUEST, new RequestScope());
		beanFactory.registerScope(SCOPE_SESSION, new SessionScope(false));
		beanFactory.registerScope(SCOPE_GLOBAL_SESSION, new SessionScope(true));

		beanFactory.addBeanPostProcessor(new ServletContextAwareProcessor(this.servletContext, this.servletConfig));
		beanFactory.ignoreDependencyInterface(ServletContextAware.class);
		beanFactory.ignoreDependencyInterface(ServletConfigAware.class);
	}

	/**
	 * This implementation supports file paths beneath the root of the ServletContext.
	 * @see ServletContextResource
	 */
	protected Resource getResourceByPath(String path) {
		return new ServletContextResource(this.servletContext, path);
	}

	/**
	 * This implementation supports pattern matching in unexpanded WARs too.
	 * @see ServletContextResourcePatternResolver
	 */
	protected ResourcePatternResolver getResourcePatternResolver() {
		return new ServletContextResourcePatternResolver(this);
	}

	/**
	 * Initialize the theme capability.
	 */
	protected void onRefresh() {
		this.themeSource = UiApplicationContextUtils.initThemeSource(this);
	}

	public Theme getTheme(String themeName) {
		return this.themeSource.getTheme(themeName);
	}

}