Tomcat example source code file (JspApplicationContext.java)

This example Tomcat source code file (JspApplicationContext.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 - Tomcat tags/keywords

expressionfactory, expressionfactory, illegalstateexception, illegalstateexception, jspapplicationcontext, jspapplicationcontext

The Tomcat JspApplicationContext.java source code

/*
* 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 javax.servlet.jsp;

import javax.el.ELContextListener;
import javax.el.ELResolver;
import javax.el.ExpressionFactory;

/**
 * <p>
 * Stores <i>application-scoped information for the JSP container.
 * </p>
 * @since 2.1
 */
public interface JspApplicationContext {

	/**
	 * <p>
	 * Registers an <code>ELContextListener that will notified whenever
	 * a new <code>ELContext is created.
	 * </p>
	 * <p>
	 * At the very least, any <code>ELContext instantiated will have reference
	 * to the <code>JspContext under JspContext.class.
	 * </p>
	 * 
	 * @param listener
	 */
	public void addELContextListener(ELContextListener listener);
	
	/**
	 * <p>
	 * Adds an <code>ELResolver to the chain of EL variable and property management
	 * within JSP pages and Tag files.
	 * </p>
	 * <p>
	 * JSP has a default set of ELResolvers to chain for all EL evaluation:
	 * <ul>
	 * <li>ImplicitObjectELResolver
	 * <li>ELResolver instances registered with this method
	 * <li>MapELResolver
	 * <li>ListELResolver
	 * <li>ArrayELResolver
	 * <li>BeanELResolver
	 * <li>ScopedAttributeELResolver
	 * </ul>
	 * </p>
	 * 
	 * @param resolver an additional resolver
	 * @throws IllegalStateException if called after the application's <code>ServletContextListeners have been initialized.
	 */
	public void addELResolver(ELResolver resolver) throws IllegalStateException;
	
	/**
	 * <p>
	 * Returns the JSP container's <code>ExpressionFactory implementation for EL use.
	 * </p>
	 * 
	 * @return an <code>ExpressionFactory implementation
	 */
	public ExpressionFactory getExpressionFactory();
	
}