1 /**
2 * This file Copyright (c) 2010-2018 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.jcr.nodebuilder;
35
36 import java.util.ArrayList;
37 import java.util.List;
38
39 import javax.jcr.Node;
40 import javax.jcr.RepositoryException;
41
42 import org.apache.commons.collections4.CollectionUtils;
43 import org.slf4j.Logger;
44 import org.slf4j.LoggerFactory;
45
46 /**
47 * Abstract implementation of NodeOperation. Mainly implementing {@link #then(NodeOperation...)}.
48 */
49 public abstract class AbstractNodeOperation implements NodeOperation {
50 private static final Logger log = LoggerFactory.getLogger(AbstractNodeOperation.class);
51
52 private List<NodeOperation> childrenOps = new ArrayList<NodeOperation>();
53
54 @Override
55 public void exec(Node context, ErrorHandler errorHandler) {
56 Node execResult = context;
57 try {
58 execResult = doExec(execResult, errorHandler);
59 } catch (RepositoryException e) {
60 try {
61 errorHandler.handle(e, execResult);
62 } catch (RepositoryException e1) {
63 log.warn("Could not handle original exception {} because of: ", e.getMessage(), e1);
64 }
65 }
66
67 for (NodeOperation childrenOp : childrenOps) {
68 childrenOp.exec(execResult, errorHandler);
69 }
70 }
71
72 /**
73 * @return the node that should now be used as the context for subsequent operations
74 */
75 protected abstract Node doExec(Node context, ErrorHandler errorHandler) throws RepositoryException;
76
77 @Override
78 public NodeOperation then(NodeOperation... childrenOps) {
79 // add the operations to allow multiple calls on the method.
80 CollectionUtils.addAll(this.childrenOps, childrenOps);
81 return this;
82 }
83 }