1 /** 2 * This file Copyright (c) 2013 Magnolia International 3 * Ltd. (http://www.magnolia-cms.com). All rights reserved. 4 * 5 * 6 * This file is dual-licensed under both the Magnolia 7 * Network Agreement and the GNU General Public License. 8 * You may elect to use one or the other of these licenses. 9 * 10 * This file is distributed in the hope that it will be 11 * useful, but AS-IS and WITHOUT ANY WARRANTY; without even the 12 * implied warranty of MERCHANTABILITY or FITNESS FOR A 13 * PARTICULAR PURPOSE, TITLE, or NONINFRINGEMENT. 14 * Redistribution, except as permitted by whichever of the GPL 15 * or MNA you select, is prohibited. 16 * 17 * 1. For the GPL license (GPL), you can redistribute and/or 18 * modify this file under the terms of the GNU General 19 * Public License, Version 3, as published by the Free Software 20 * Foundation. You should have received a copy of the GNU 21 * General Public License, Version 3 along with this program; 22 * if not, write to the Free Software Foundation, Inc., 51 23 * Franklin St, Fifth Floor, Boston, MA 02110-1301 USA. 24 * 25 * 2. For the Magnolia Network Agreement (MNA), this file 26 * and the accompanying materials are made available under the 27 * terms of the MNA which accompanies this distribution, and 28 * is available at http://www.magnolia-cms.com/mna.html 29 * 30 * Any modifications to this file must keep this entire header 31 * intact. 32 * 33 */ 34 package info.magnolia.module.delta; 35 36 import info.magnolia.context.MgnlContext; 37 import info.magnolia.module.InstallContext; 38 import info.magnolia.objectfactory.Classes; 39 import info.magnolia.objectfactory.MgnlInstantiationException; 40 41 import org.apache.commons.chain.Command; 42 43 /** 44 * Task that executes command. 45 */ 46 public class ExecuteCommandTask extends AbstractTask { 47 48 private Command command; 49 private Class<? extends Command> commandClass; 50 51 /** 52 * Constructor. 53 * 54 * @param taskName name of the task 55 * @param taskDescription description of the task 56 * @param commandName command class 57 * @param params parameters to be passed to the command's constructor 58 */ 59 public ExecuteCommandTask(String taskName, String taskDescription, Class<? extends Command> commandClass, Object... params) { 60 super(taskName, taskDescription); 61 this.commandClass = commandClass; 62 try { 63 this.command = Classes.getClassFactory().newInstance(commandClass, params); 64 } catch (MgnlInstantiationException e) { 65 this.command = null; 66 } 67 } 68 69 @Override 70 public void execute(InstallContext installContext) throws TaskExecutionException { 71 if (this.command == null) { 72 String message = "Couldn't find command " + this.commandClass.getName() + "."; 73 installContext.warn(message); 74 return; 75 } 76 77 try { 78 this.command.execute(MgnlContext.getInstance()); 79 } catch (Exception e) { 80 throw new TaskExecutionException(e.getMessage(), e); 81 } 82 } 83 }