| /* |
| * 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.components.language.markup.xsp; |
| |
| import org.apache.cocoon.environment.Session; |
| |
| import java.util.ArrayList; |
| import java.util.Enumeration; |
| import java.util.List; |
| |
| /** |
| * The <code>Session</code> object helper |
| * |
| * @author <a href="mailto:ricardo@apache.org">Ricardo Rocha</a> |
| * @author <a href="mailto:vgritsenko@apache.org">Vadim Gritsenko</a> |
| * @version CVS $Id$ |
| */ |
| public class XSPSessionHelper { |
| |
| /** |
| * Return the given session attribute value or a user-provided default if |
| * none was specified. |
| * |
| * @param session The Session object |
| * @param name The parameter name |
| * @param defaultValue Value to substitute in absence of a parameter value |
| */ |
| public static Object getSessionAttribute(Session session, String name, |
| Object defaultValue) { |
| Object value = null; |
| if (session != null) { |
| value = session.getAttribute(name); |
| } |
| |
| if (value == null) { |
| value = defaultValue; |
| } |
| |
| return value; |
| } |
| |
| /** |
| * Get the session attribute names. |
| * |
| * @param session The Session object |
| */ |
| public static List getSessionAttributeNames(Session session) { |
| ArrayList v = new ArrayList(); |
| if (session == null) { |
| return v; |
| } |
| Enumeration e = session.getAttributeNames(); |
| while (e.hasMoreElements()) { |
| v.add(e.nextElement()); |
| } |
| return v; |
| } |
| } |