| /* |
| * $Id$ |
| * |
| * 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.portlet; |
| |
| import java.util.AbstractMap; |
| import java.util.Enumeration; |
| import java.util.HashSet; |
| import java.util.Set; |
| |
| import javax.portlet.PortletRequest; |
| |
| import com.opensymphony.xwork2.util.logging.Logger; |
| import com.opensymphony.xwork2.util.logging.LoggerFactory; |
| |
| /** |
| * A simple implementation of the {@link java.util.Map} interface to handle a collection of request attributes. |
| * |
| */ |
| public class PortletRequestMap extends AbstractMap { |
| |
| private static final Logger LOG = LoggerFactory.getLogger(PortletRequestMap.class); |
| |
| private Set<Object> entries = null; |
| private PortletRequest request = null; |
| |
| /** |
| * Saves the request to use as the backing for getting and setting values |
| * |
| * @param request the portlet request. |
| */ |
| public PortletRequestMap(PortletRequest request) { |
| this.request = request; |
| } |
| |
| /** |
| * Removes all attributes from the request as well as clears entries in this |
| * map. |
| */ |
| public void clear() { |
| entries = null; |
| Enumeration keys = request.getAttributeNames(); |
| |
| while (keys.hasMoreElements()) { |
| String key = (String) keys.nextElement(); |
| request.removeAttribute(key); |
| } |
| } |
| |
| /** |
| * Returns a Set of attributes from the portlet request. |
| * |
| * @return a Set of attributes from the portlet request. |
| */ |
| public Set entrySet() { |
| if (entries == null) { |
| entries = new HashSet<Object>(); |
| |
| Enumeration enumeration = request.getAttributeNames(); |
| |
| while (enumeration.hasMoreElements()) { |
| final String key = enumeration.nextElement().toString(); |
| final Object value = request.getAttribute(key); |
| entries.add(new Entry() { |
| public boolean equals(Object obj) { |
| Entry entry = (Entry) obj; |
| |
| return ((key == null) ? (entry.getKey() == null) : key |
| .equals(entry.getKey())) |
| && ((value == null) ? (entry.getValue() == null) |
| : value.equals(entry.getValue())); |
| } |
| |
| public int hashCode() { |
| return ((key == null) ? 0 : key.hashCode()) |
| ^ ((value == null) ? 0 : value.hashCode()); |
| } |
| |
| public Object getKey() { |
| return key; |
| } |
| |
| public Object getValue() { |
| return value; |
| } |
| |
| public Object setValue(Object obj) { |
| request.setAttribute(key, obj); |
| |
| return value; |
| } |
| }); |
| } |
| } |
| |
| return entries; |
| } |
| |
| /** |
| * Returns the request attribute associated with the given key or |
| * <tt>null</tt> if it doesn't exist. |
| * |
| * @param key the name of the request attribute. |
| * @return the request attribute or <tt>null</tt> if it doesn't exist. |
| */ |
| public Object get(Object key) { |
| return request.getAttribute(key.toString()); |
| } |
| |
| /** |
| * Saves an attribute in the request. |
| * |
| * @param key the name of the request attribute. |
| * @param value the value to set. |
| * @return the object that was just set. |
| */ |
| public Object put(Object key, Object value) { |
| entries = null; |
| request.setAttribute(key.toString(), value); |
| |
| return get(key); |
| } |
| |
| /** |
| * Removes the specified request attribute. |
| * |
| * @param key the name of the attribute to remove. |
| * @return the value that was removed or <tt>null</tt> if the value was |
| * not found (and hence, not removed). |
| */ |
| public Object remove(Object key) { |
| entries = null; |
| |
| Object value = get(key); |
| request.removeAttribute(key.toString()); |
| |
| return value; |
| } |
| |
| } |