001/* 002 * Copyright 2012 Anyware Services 003 * 004 * Licensed under the Apache License, Version 2.0 (the "License"); 005 * you may not use this file except in compliance with the License. 006 * You may obtain a copy of the License at 007 * 008 * http://www.apache.org/licenses/LICENSE-2.0 009 * 010 * Unless required by applicable law or agreed to in writing, software 011 * distributed under the License is distributed on an "AS IS" BASIS, 012 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. 013 * See the License for the specific language governing permissions and 014 * limitations under the License. 015 */ 016package org.ametys.core.util.cocoon; 017 018import org.apache.avalon.framework.service.ServiceException; 019import org.apache.avalon.framework.thread.ThreadSafe; 020import org.apache.cocoon.acting.ServiceableAction; 021 022import org.ametys.core.user.CurrentUserProvider; 023import org.ametys.core.user.UserIdentity; 024 025/** 026 * {@link ServiceableAction} which provides the current user if necessary. 027 */ 028public abstract class AbstractCurrentUserProviderServiceableAction extends ServiceableAction implements ThreadSafe 029{ 030 /** The current user provider. */ 031 private CurrentUserProvider _currentUserProvider; 032 033 /** 034 * Provides the current user. 035 * @return the user which cannot be <code>null</code>. 036 */ 037 protected UserIdentity _getCurrentUser() 038 { 039 if (_currentUserProvider == null) 040 { 041 try 042 { 043 _currentUserProvider = (CurrentUserProvider) manager.lookup(CurrentUserProvider.ROLE); 044 } 045 catch (ServiceException e) 046 { 047 throw new IllegalStateException(e); 048 } 049 } 050 051 return _currentUserProvider.getUser(); 052 } 053}