src/share/jaxws_classes/com/sun/xml/internal/xsom/XmlString.java

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1 /*
2 * Copyright (c) 1997, 2010, Oracle and/or its affiliates. All rights reserved.
3 * DO NOT ALTER OR REMOVE COPYRIGHT NOTICES OR THIS FILE HEADER.
4 *
5 * This code is free software; you can redistribute it and/or modify it
6 * under the terms of the GNU General Public License version 2 only, as
7 * published by the Free Software Foundation. Oracle designates this
8 * particular file as subject to the "Classpath" exception as provided
9 * by Oracle in the LICENSE file that accompanied this code.
10 *
11 * This code is distributed in the hope that it will be useful, but WITHOUT
12 * ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or
13 * FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License
14 * version 2 for more details (a copy is included in the LICENSE file that
15 * accompanied this code).
16 *
17 * You should have received a copy of the GNU General Public License version
18 * 2 along with this work; if not, write to the Free Software Foundation,
19 * Inc., 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA.
20 *
21 * Please contact Oracle, 500 Oracle Parkway, Redwood Shores, CA 94065 USA
22 * or visit www.oracle.com if you need additional information or have any
23 * questions.
24 */
25
26 package com.sun.xml.internal.xsom;
27
28 import org.relaxng.datatype.ValidationContext;
29
30 /**
31 * String with in-scope namespace binding information.
32 *
33 * <p>
34 * In a general case, text (PCDATA/attributes) that appear in XML schema
35 * cannot be correctly interpreted unless you also have in-scope namespace
36 * binding (a case in point is QName.) Therefore, it's convenient to
37 * handle the lexical representation and the in-scope namespace binding
38 * in a pair.
39 *
40 * @author Kohsuke Kawaguchi
41 */
42 public final class XmlString {
43 /**
44 * Textual value. AKA lexical representation.
45 */
46 public final String value;
47
48 /**
49 * Used to resole in-scope namespace bindings.
50 */
51 public final ValidationContext context;
52
53 /**
54 * Creates a new {@link XmlString} from a lexical representation and in-scope namespaces.
55 */
56 public XmlString(String value, ValidationContext context) {
57 this.value = value;
58 this.context = context;
59 if(context==null)
60 throw new IllegalArgumentException();
61 }
62
63 /**
64 * Creates a new {@link XmlString} with empty in-scope namespace bindings.
65 */
66 public XmlString(String value) {
67 this(value,NULL_CONTEXT);
68 }
69
70 /**
71 * Resolves a namespace prefix to the corresponding namespace URI.
72 *
73 * This method is used for resolving prefixes in the {@link #value}
74 * (such as when {@link #value} represents a QName type.)
75 *
76 * <p>
77 * If the prefix is "" (empty string), the method
78 * returns the default namespace URI.
79 *
80 * <p>
81 * If the prefix is "xml", then the method returns
82 * "http://www.w3.org/XML/1998/namespace",
83 * as defined in the XML Namespaces Recommendation.
84 *
85 * @return
86 * namespace URI of this prefix.
87 * If the specified prefix is not declared,
88 * the implementation returns null.
89 */
90 public final String resolvePrefix(String prefix) {
91 return context.resolveNamespacePrefix(prefix);
92 }
93
94 public String toString() {
95 return value;
96 }
97
98 private static final ValidationContext NULL_CONTEXT = new ValidationContext() {
99 public String resolveNamespacePrefix(String s) {
100 if(s.length()==0) return "";
101 if(s.equals("xml")) return "http://www.w3.org/XML/1998/namespace";
102 return null;
103 }
104
105 public String getBaseUri() {
106 return null;
107 }
108
109 public boolean isUnparsedEntity(String s) {
110 return false;
111 }
112
113 public boolean isNotation(String s) {
114 return false;
115 }
116 };
117 }

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