| /* Copyright 2004-2005 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.codehaus.groovy.grails.web.servlet; |
| |
| import java.util.*; |
| |
| /** |
| * Grails implementation of Flash scope (@see org.codehaus.groovy.grails.web.servlet.FlashScope) |
| * |
| * @author Graeme Rocher |
| * @since 07-Feb-2006 |
| */ |
| public class GrailsFlashScope implements FlashScope { |
| private HashMap current = new HashMap(); |
| private HashMap next = new HashMap(); |
| |
| public void next() { |
| current.clear(); |
| current = (HashMap)next.clone(); |
| next.clear(); |
| } |
| |
| public int size() { |
| return current.size() + next.size(); |
| } |
| |
| public void clear() { |
| current.clear(); |
| next.clear(); |
| } |
| |
| public boolean isEmpty() { |
| return size() == 0; |
| } |
| |
| public boolean containsKey(Object key) { |
| return (current.containsKey(key) || next.containsKey(key)); |
| } |
| |
| public boolean containsValue(Object value) { |
| return (current.containsValue(value) || next.containsValue(value)); |
| } |
| |
| public Collection values() { |
| Collection c = new ArrayList(); |
| c.addAll(current.values()); |
| c.addAll(next.values()); |
| return c; |
| } |
| |
| public void putAll(Map t) { |
| for (Iterator i = t.keySet().iterator(); i.hasNext();) { |
| Object key = i.next(); |
| put(key,t.get(key)); |
| } |
| } |
| |
| public Set entrySet() { |
| Set keySet = new HashSet(); |
| keySet.addAll(current.entrySet()); |
| keySet.addAll(next.entrySet()); |
| return keySet; |
| } |
| |
| public Set keySet() { |
| Set keySet = new HashSet(); |
| keySet.addAll(current.keySet()); |
| keySet.addAll(next.keySet()); |
| return keySet; |
| } |
| |
| public Object get(Object key) { |
| if(next.containsKey(key)) |
| return next.get(key); |
| return current.get(key); |
| } |
| |
| public Object remove(Object key) { |
| if(current.containsKey(key)) |
| return current.remove(key); |
| else |
| return next.remove(key); |
| } |
| |
| public Object put(Object key, Object value) { |
| if(current.containsKey(key)) { |
| current.remove(key); |
| } |
| return next.put(key,value); |
| } |
| } |