1 /**
2 * This file Copyright (c) 2014-2018 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 static org.apache.commons.lang3.StringUtils.prependIfMissing;
37
38 import info.magnolia.module.InstallContext;
39
40 import javax.jcr.Node;
41 import javax.jcr.RepositoryException;
42 import javax.jcr.Session;
43
44 /**
45 * A task that delegates to another if a checkNode is true, or to an optional other if it is false.
46 */
47 public abstract class CheckNodeDelegateTask extends ConditionalDelegateTask {
48 protected final String workspaceName;
49 protected final String nodePath;
50 protected final String propertyName;
51
52 public CheckNodeDelegateTask(String taskName, String taskDescription, String workspaceName, String nodePath, String propertyName, Taskef="../../../../info/magnolia/module/delta/Task.html#Task">Task ifTrue, Task ifFalse) {
53 super(taskName, taskDescription, ifTrue, ifFalse);
54 this.workspaceName = workspaceName;
55 this.nodePath = nodePath;
56 this.propertyName = propertyName;
57 }
58
59 @Override
60 protected boolean condition(InstallContext ctx) throws TaskExecutionException {
61 try {
62 final Session session = ctx.getJCRSession(workspaceName);
63 if (!session.nodeExists(prependIfMissing(nodePath, "/"))) {
64 return false;
65 }
66
67 final Node node = session.getNode(nodePath);
68 return checkNode(node, ctx);
69 } catch (RepositoryException e) {
70 throw new TaskExecutionException("Can't check for property " + propertyName + " in " + nodePath + ".", e);
71 }
72 }
73
74 protected abstract boolean checkNode(Node node, InstallContext ctx) throws RepositoryException, TaskExecutionException;
75 }