XMLConstants


1   // $Id: XMLConstants.java,v 1.10.12.1 2004/05/05 20:04:51 jsuttor Exp $
2   
3   /*
4    * @(#)XMLConstants.java    1.8 04/07/26
5    * 
6    * Copyright 2004 Sun Microsystems, Inc. All rights reserved.
7    * SUN PROPRIETARY/CONFIDENTIAL. Use is subject to license terms.
8    */
9   
10  package javax.xml;
11  
12  /**
13   * <p>Utility class to contain basic XML values as constants.</p>
14   *
15   * @author <a HREF="mailto:Jeff.Suttor@Sun.com">Jeff Suttor</a>
16   * @version $Revision: 1.10.12.1 $, $Date: 2004/05/05 20:04:51 $
17   * @see <a HREF="http://www.w3.org/TR/xml11/">Extensible Markup Language (XML) 1.1</a>
18   * @see <a HREF="http://www.w3.org/TR/REC-xml">Extensible Markup Language (XML) 1.0 (Second Edition)</a>
19   * @see <a HREF="http://www.w3.org/XML/xml-V10-2e-errata">XML 1.0 Second Edition Specification Errata</a>
20   * @see <a HREF="http://www.w3.org/TR/xml-names11/">Namespaces in XML 1.1</a>
21   * @see <a HREF="http://www.w3.org/TR/REC-xml-names">Namespaces in XML</a>
22   * @see <a HREF="http://www.w3.org/XML/xml-names-19990114-errata">Namespaces in XML Errata</a>
23   * @see <a HREF="http://www.w3.org/TR/xmlschema-1/">XML Schema Part 1: Structures</a>
24   * @since 1.5
25   **/
26  
27  public final class XMLConstants {
28      
29      /**
30       * <p>Private constructor to prevent instantiation.</p>
31       */
32      private XMLConstants() {
33      }
34  
35      /**
36       * <p>Namespace URI to use to represent that there is no Namespace.</p>
37       *
38       * <p>Defined by the Namespace specification to be "".</p>
39       *
40       * @see <a HREF="http://www.w3.org/TR/REC-xml-names/#defaulting">
41       * Namespaces in XML, 5.2 Namespace Defaulting</a>
42       */
43      public static final String   NULL_NS_URI = "";
44  
45      /**
46       * <p>Prefix to use to represent the default XML Namespace.</p>
47       *
48       * <p>Defined by the XML specification to be "".</p>
49       *
50       * @see <a
51       * HREF="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
52       * Namespaces in XML, 3. Qualified Names</a>
53       */
54      public static final String   DEFAULT_NS_PREFIX = "";
55  
56      /**
57       * <p>The official XML Namespace name URI.</p>
58       *
59       * <p>Defined by the XML specification to be
60       * "<code>http://www.w3.org/XML/1998/namespace</code>".</p>
61       *
62       * @see <a
63       * HREF="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
64       * Namespaces in XML, 3. Qualified Names</a>
65       */
66      public static final String   XML_NS_URI =
67          "http://www.w3.org/XML/1998/namespace";
68  
69      /**
70       * <p>The official XML Namespace prefix.</p>
71       *
72       * <p>Defined by the XML specification to be "<code>xml</code>".</p>
73       *
74       * @see <a
75       * HREF="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
76       * Namespaces in XML, 3. Qualified Names<</a>
77       */
78      public static final String   XML_NS_PREFIX = "xml";
79  
80      /**
81       * <p>The official XML attribute used for specifying XML Namespace
82       * declarations, {@link #XMLNS_ATTRIBUTE
83       * XMLConstants.XMLNS_ATTRIBUTE}, Namespace name URI.</p>
84       *
85       * <p>Defined by the XML specification to be
86       * "<code>http://www.w3.org/2000/xmlns/</code>".</p>
87       *
88       * @see <a
89       * HREF="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
90       * Namespaces in XML, 3. Qualified Names</a>
91       * @see <a
92       * HREF="http://www.w3.org/XML/xml-names-19990114-errata/">
93       * Namespaces in XML Errata</a>
94       */
95      public static final String   XMLNS_ATTRIBUTE_NS_URI =
96          "http://www.w3.org/2000/xmlns/";
97  
98      /**
99       * <p>The official XML attribute used for specifying XML Namespace
100      * declarations.</p>
101      *
102      * <p>It is <strong><em>NOT</em></strong> valid to use as a
103      * prefix.  Defined by the XML specification to be
104      * "<code>xmlns</code>".</p>
105      *
106      * @see <a
107      * HREF="http://www.w3.org/TR/REC-xml-names/#ns-qualnames">
108      * Namespaces in XML, 3. Qualified Names</a>
109      */
110     public static final String   XMLNS_ATTRIBUTE = "xmlns";
111     
112     /**
113      * <p>W3C XML Schema Namespace URI.</p>
114      * 
115      * <p>Defined to be "<code>http://www.w3.org/2001/XMLSchema</code>".
116      * 
117      * @see <a HREF=
118      *  "http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions">
119      *  XML Schema Part 1:
120      *  Structures, 2.6 Schema-Related Markup in Documents Being Validated</a>
121      */
122     public static final String   W3C_XML_SCHEMA_NS_URI =
123         "http://www.w3.org/2001/XMLSchema";
124 
125     /**
126      * <p>W3C XML Schema Instance Namespace URI.</p>
127      * 
128      * <p>Defined to be "<code>http://www.w3.org/2001/XMLSchema-instance</code>".</p>
129      * 
130      * @see <a HREF=
131      *  "http://www.w3.org/TR/xmlschema-1/#Instance_Document_Constructions">
132      *  XML Schema Part 1:
133      *  Structures, 2.6 Schema-Related Markup in Documents Being Validated</a>
134      */
135     public static final String   W3C_XML_SCHEMA_INSTANCE_NS_URI =
136         "http://www.w3.org/2001/XMLSchema-instance";
137 
138     /**
139      * <p>W3C XPath Datatype Namespace URI.</p>
140      * 
141      * <p>Defined to be "<code>http://www.w3.org/2003/11/xpath-datatypes</code>".</p>
142      * 
143      * @see <a HREF="http://www.w3.org/TR/xpath-datamodel">XQuery 1.0 and XPath 2.0 Data Model</a>
144      */
145     public static final String   W3C_XPATH_DATATYPE_NS_URI = "http://www.w3.org/2003/11/xpath-datatypes";
146 
147     /**
148      * <p>XML Document Type Declaration Namespace URI as an arbitrary value.</p>
149      * 
150      * <p>Since not formally defined by any existing standard, arbitrarily define to be "<code>http://www.w3.org/TR/REC-xml</code>".
151      */
152     public static final String   XML_DTD_NS_URI = "http://www.w3.org/TR/REC-xml";
153 
154     /**
155      * <p>RELAX NG Namespace URI.</p>
156      * 
157      * <p>Defined to be "<code>http://relaxng.org/ns/structure/1.0</code>".</p>
158      * 
159      * @see <a HREF="http://relaxng.org/spec-20011203.html">RELAX NG Specification</a>
160      */
161     public static final String   RELAXNG_NS_URI = "http://relaxng.org/ns/structure/1.0";
162     
163     /**
164      * <p>Feature for secure processing.</p>
165      * 
166      * <ul>
167      *   <li>
168      *     <code>true</code> instructs the implementation to process XML securely.
169      *     This may set limits on XML constructs to avoid conditions such as denial of service attacks.
170      *   </li>
171      *   <li>
172      *     <code>false</code> instructs the implementation to process XML acording the letter of the XML specifications
173      *     ingoring security issues such as limits on XML constructs to avoid conditions such as denial of service attacks.
174      *   </li>
175      * </ul>
176      */    
177     public static final String   FEATURE_SECURE_PROCESSING = "http://javax.xml.XMLConstants/feature/secure-processing";
178 }
179
A to Z: JavaDoc & Examples Daily Java News & Articles Open Source Projects Open Source Codes Free Computer Books Remove Frame
Popular Tags