1 /*
2 * ModeShape (http://www.modeshape.org)
3 * See the COPYRIGHT.txt file distributed with this work for information
4 * regarding copyright ownership. Some portions may be licensed
5 * to Red Hat, Inc. under one or more contributor license agreements.
6 * See the AUTHORS.txt file in the distribution for a full listing of
7 * individual contributors.
8 *
9 * ModeShape is free software. Unless otherwise indicated, all code in ModeShape
10 * is licensed to you under the terms of the GNU Lesser General Public License as
11 * published by the Free Software Foundation; either version 2.1 of
12 * the License, or (at your option) any later version.
13 *
14 * ModeShape is distributed in the hope that it will be useful,
15 * but WITHOUT ANY WARRANTY; without even the implied warranty of
16 * MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
17 * Lesser General Public License for more details.
18 *
19 * You should have received a copy of the GNU Lesser General Public
20 * License along with this software; if not, write to the Free
21 * Software Foundation, Inc., 51 Franklin St, Fifth Floor, Boston, MA
22 * 02110-1301 USA, or see the FSF site: http://www.fsf.org.
23 */
24 package org.modeshape.common.collection;
25
26 import java.util.Iterator;
27 import java.util.LinkedList;
28 import java.util.List;
29 import net.jcip.annotations.NotThreadSafe;
30
31 /**
32 * A simple {@link Problems} collection. The problems will be {@link #iterator() returned} in the order in which they were
33 * encountered (although this cannot be guaranteed in contexts involving multiple threads or processes).
34 */
35 @NotThreadSafe
36 public class SimpleProblems extends AbstractProblems {
37 private static final long serialVersionUID = 1L;
38
39 private List<Problem> problems;
40
41 /**
42 * {@inheritDoc}
43 *
44 * @see org.modeshape.common.collection.AbstractProblems#addProblem(Problem)
45 */
46 @Override
47 protected void addProblem( Problem problem ) {
48 if (problem == null) return;
49 if (problems == null) problems = new LinkedList<Problem>();
50 problems.add(problem);
51 }
52
53 /**
54 * {@inheritDoc}
55 *
56 * @see org.modeshape.common.collection.AbstractProblems#getProblems()
57 */
58 @Override
59 protected List<Problem> getProblems() {
60 return this.problems != null ? problems : EMPTY_PROBLEMS;
61 }
62
63 /**
64 * {@inheritDoc}
65 *
66 * @see java.lang.Object#toString()
67 */
68 @Override
69 public String toString() {
70 StringBuilder sb = new StringBuilder();
71 Iterator<Problem> iter = getProblems().iterator();
72 if (iter.hasNext()) {
73 sb.append(iter.next());
74 while (iter.hasNext()) {
75 sb.append("\n");
76 sb.append(iter.next());
77 }
78 }
79 return sb.toString();
80 }
81 }