1 /** 2 * This file Copyright (c) 2009-2013 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.cms.util.QueryUtil; 37 import info.magnolia.module.InstallContext; 38 39 import javax.jcr.Node; 40 import javax.jcr.NodeIterator; 41 import javax.jcr.RepositoryException; 42 import javax.jcr.query.Query; 43 44 /** 45 * An abstract task to perform operations on nodes returned by a given query. 46 * Keep in mind that results returned by a query will reflect the current 47 * content of the repository, not of your session; i.e if a previous task 48 * modified a property, the query might still return the node as if it had 49 * the previous value. 50 * 51 * @version $Id$ 52 */ 53 public abstract class QueryTask extends AbstractRepositoryTask { 54 private final String repositoryName; 55 private final String query; 56 57 public QueryTask(String name, String description, String repositoryName, String query) { 58 super(name, description); 59 this.repositoryName = repositoryName; 60 this.query = query; 61 } 62 63 @Override 64 protected void doExecute(InstallContext installContext) throws RepositoryException, TaskExecutionException { 65 final NodeIterator nodeIterator = QueryUtil.search(repositoryName, query, Query.JCR_SQL2); 66 while(nodeIterator.hasNext()){ 67 operateOnNode(installContext, nodeIterator.nextNode()); 68 } 69 } 70 71 protected abstract void operateOnNode(InstallContext installContext, Node node); 72 }