Java tutorial
/* * 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.commons.scxml.env.jsp; import javax.servlet.jsp.el.ELException; import javax.servlet.jsp.el.VariableResolver; import org.apache.commons.scxml.Context; import org.apache.commons.scxml.env.SimpleContext; /** * EL Context for SCXML interpreter. * */ public class ELContext extends SimpleContext implements VariableResolver { /** Serial version UID. */ private static final long serialVersionUID = 1L; /** * Constructor. * */ public ELContext() { super(); } /** * Constructor. * * @param parent A parent Context, can be null */ public ELContext(final Context parent) { super(parent); } /** * Resolves the specified variable. Returns null if the variable is * not found. * * @param pName The variable to resolve * @return Object The value of the variable, or null, if it does not * exist * @throws ELException While resolving the variable * @see javax.servlet.jsp.el.VariableResolver#resolveVariable(String) */ public Object resolveVariable(final String pName) throws ELException { return get(pName); } }