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.graph.query.model;
25
26 import java.io.Serializable;
27 import java.util.Collections;
28 import java.util.LinkedHashSet;
29 import java.util.Set;
30 import net.jcip.annotations.Immutable;
31 import org.modeshape.common.util.CheckArg;
32
33 /**
34 * A representation of a qualified or expanded name.
35 */
36 @Immutable
37 public class SelectorName implements Readable, Serializable {
38 private static final long serialVersionUID = 1L;
39
40 private final String name;
41
42 public SelectorName( String name ) {
43 CheckArg.isNotEmpty(name, "name");
44 this.name = name;
45 }
46
47 /**
48 * The raw name of the selector.
49 *
50 * @return the raw name; never null and never empty
51 */
52 public String name() {
53 return name;
54 }
55
56 /**
57 * {@inheritDoc}
58 *
59 * @see org.modeshape.graph.query.model.Readable#getString()
60 */
61 public String getString() {
62 return name;
63 }
64
65 /**
66 * {@inheritDoc}
67 *
68 * @see java.lang.Object#toString()
69 */
70 @Override
71 public String toString() {
72 return name;
73 }
74
75 /**
76 * {@inheritDoc}
77 *
78 * @see java.lang.Object#hashCode()
79 */
80 @Override
81 public int hashCode() {
82 return this.name.hashCode();
83 }
84
85 /**
86 * {@inheritDoc}
87 *
88 * @see java.lang.Object#equals(java.lang.Object)
89 */
90 @Override
91 public boolean equals( Object obj ) {
92 if (obj == this) return true;
93 if (obj instanceof SelectorName) {
94 SelectorName that = (SelectorName)obj;
95 return this.name.equals(that.name());
96 }
97 return false;
98 }
99
100 public static Set<SelectorName> nameSetFrom( SelectorName name ) {
101 return Collections.singleton(name);
102 }
103
104 public static Set<SelectorName> nameSetFrom( SelectorName firstName,
105 SelectorName... names ) {
106 Set<SelectorName> result = new LinkedHashSet<SelectorName>();
107 result.add(firstName);
108 for (SelectorName name : names) {
109 if (name != null) result.add(name);
110 }
111 return Collections.unmodifiableSet(result);
112 }
113
114 public static Set<SelectorName> nameSetFrom( Set<SelectorName> firstSet,
115 Set<SelectorName> secondSet ) {
116 Set<SelectorName> result = new LinkedHashSet<SelectorName>();
117 result.addAll(firstSet);
118 if (secondSet != null) result.addAll(secondSet);
119 return Collections.unmodifiableSet(result);
120 }
121 }