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.LinkedList;
27 import java.util.List;
28 import net.jcip.annotations.NotThreadSafe;
29
30 /**
31 * A simple {@link Problems} collection. The problems will be {@link #iterator() returned} in the order in which they were
32 * encountered (although this cannot be guaranteed in contexts involving multiple threads or processes).
33 */
34 @NotThreadSafe
35 public class SimpleProblems extends AbstractProblems {
36 private static final long serialVersionUID = 1L;
37
38 private List<Problem> problems;
39
40 /**
41 * {@inheritDoc}
42 *
43 * @see org.modeshape.common.collection.AbstractProblems#addProblem(Problem)
44 */
45 @Override
46 protected void addProblem( Problem problem ) {
47 if (problem == null) return;
48 if (problems == null) problems = new LinkedList<Problem>();
49 problems.add(problem);
50 }
51
52 /**
53 * {@inheritDoc}
54 *
55 * @see org.modeshape.common.collection.AbstractProblems#getProblems()
56 */
57 @Override
58 protected List<Problem> getProblems() {
59 return this.problems != null ? problems : EMPTY_PROBLEMS;
60 }
61
62 /**
63 * {@inheritDoc}
64 *
65 * @see org.modeshape.common.collection.Problems#addAll(java.lang.Iterable)
66 */
67 public void addAll( Iterable<Problem> problems ) {
68 if (problems != null) {
69 if (problems == this) return;
70 if (this.problems == null) this.problems = new LinkedList<Problem>();
71 for (Problem problem : problems) {
72 this.problems.add(problem);
73 }
74 }
75 }
76 }