| /* |
| * 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.cocoon.portal.coplets.basket; |
| |
| import java.io.Serializable; |
| import java.util.HashMap; |
| import java.util.Iterator; |
| import java.util.Map; |
| |
| |
| /** |
| * This is a possible base class for item implementations. |
| * |
| * It just adds attributes (or meta-data) functionality |
| * |
| * @version CVS $Id$ |
| */ |
| public class AbstractItem implements Serializable { |
| |
| protected static long currentId = System.currentTimeMillis(); |
| |
| /** The attributes */ |
| protected Map attributes = new HashMap(); |
| |
| /** Unique id */ |
| protected long id; |
| |
| public AbstractItem() { |
| synchronized ( this.getClass() ) { |
| currentId++; |
| this.id = currentId; |
| } |
| } |
| |
| /** Return an attribute or null */ |
| public Object getAttribute(String name) { |
| return this.attributes.get(name); |
| } |
| |
| /** Set an attribute */ |
| public void setAttribute(String name, Object value) { |
| this.attributes.put(name, value); |
| } |
| |
| /** Get all attribute names */ |
| public Iterator getAttributeNames() { |
| return this.attributes.keySet().iterator(); |
| } |
| |
| /** Remove one attribute */ |
| public void removeAttribute(String name) { |
| this.attributes.remove(name); |
| } |
| |
| /** Check if an attribute is available */ |
| public boolean hasAttribute(String name) { |
| return this.attributes.containsKey(name); |
| } |
| |
| public long getId() { |
| return this.id; |
| } |
| } |