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Struts example source code file (ValueStackShadowMap.java)
The Struts ValueStackShadowMap.java source code/* * $Id: ValueStackShadowMap.java 651946 2008-04-27 13:41:38Z apetrelli $ * * 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.struts2.views.jasperreports; import com.opensymphony.xwork2.util.ValueStack; import java.util.HashMap; import java.util.Set; /** * Ported to Struts: * */ public class ValueStackShadowMap extends HashMap { private static final long serialVersionUID = -167109778490907240L; /** * valueStack reference */ ValueStack valueStack; /** * entries reference */ Set entries; /** * Constructs an instance of ValueStackShadowMap. * * @param valueStack - the underlying valuestack */ public ValueStackShadowMap(ValueStack valueStack) { this.valueStack = valueStack; } /** * Implementation of containsKey(), overriding HashMap implementation. * * @param key - The key to check in HashMap and if not found to check on valueStack. * @return <tt>true, if conatins key, false otherwise. * @see java.util.HashMap#containsKey */ public boolean containsKey(Object key) { boolean hasKey = super.containsKey(key); if (!hasKey) { if (valueStack.findValue((String) key) != null) { hasKey = true; } } return hasKey; } /** * Implementation of get(), overriding HashMap implementation. * * @param key - The key to get in HashMap and if not found there from the valueStack. * @return value - The object from HashMap or if null, from the valueStack. * @see java.util.HashMap#get */ public Object get(Object key) { Object value = super.get(key); if ((value == null) && key instanceof String) { value = valueStack.findValue((String) key); } return value; } } Other Struts examples (source code examples)Here is a short list of links related to this Struts ValueStackShadowMap.java source code file: |
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