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.commands.chain.Command; 37 import info.magnolia.context.MgnlContext; 38 import info.magnolia.module.InstallContext; 39 import info.magnolia.objectfactory.Classes; 40 import info.magnolia.objectfactory.MgnlInstantiationException; 41 42 /** 43 * Task that executes command. 44 */ 45 public class ExecuteCommandTask extends AbstractTask { 46 47 private Command command; 48 private Class<? extends Command> commandClass; 49 50 /** 51 * Constructor. 52 * 53 * @param taskName name of the task 54 * @param taskDescription description of the task 55 * @param commandName command class 56 * @param params parameters to be passed to the command's constructor 57 */ 58 public ExecuteCommandTask(String taskName, String taskDescription, Class<? extends Command> commandClass, Object... params) { 59 super(taskName, taskDescription); 60 this.commandClass = commandClass; 61 try { 62 this.command = Classes.getClassFactory().newInstance(commandClass, params); 63 } catch (MgnlInstantiationException e) { 64 this.command = null; 65 } 66 } 67 68 @Override 69 public void execute(InstallContext installContext) throws TaskExecutionException { 70 if (this.command == null) { 71 String message = "Couldn't find command " + this.commandClass.getName() + "."; 72 installContext.warn(message); 73 return; 74 } 75 76 try { 77 this.command.execute(MgnlContext.getInstance()); 78 } catch (Exception e) { 79 throw new TaskExecutionException(e.getMessage(), e); 80 } 81 } 82 }