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/*
 * Licensed to the Apache Software Foundation (ASF) under one or more
 * contributor license agreements.  See the NOTICE file distributed with
 * this work for additional information regarding copyright ownership.
 * The ASF licenses this file to You under the Apache License, Version 2.0
 * (the "License"); you may not use this file except in compliance with
 * the License.  You may obtain a copy of the License at
 *
 *     http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

// $Id: XMLConstants.java 584477 2007-10-14 02:44:03Z mrglavas $

package javax.xml;

/**
 * 

Utility class to contain basic XML values as constants.

* * @author Jeff Suttor * @version $Revision: 584477 $, $Date: 2007-10-13 22:44:03 -0400 (Sat, 13 Oct 2007) $ * @see Extensible Markup Language (XML) 1.1 * @see Extensible Markup Language (XML) 1.0 (Second Edition) * @see XML 1.0 Second Edition Specification Errata * @see Namespaces in XML 1.1 * @see Namespaces in XML * @see Namespaces in XML Errata * @see XML Schema Part 1: Structures * @since 1.5 **/ public final class XMLConstants { /** *

Private constructor to prevent instantiation.

*/ private XMLConstants() { } /** *

Namespace URI to use to represent that there is no Namespace.

* *

Defined by the Namespace specification to be "".

* * @see * Namespaces in XML, 5.2 Namespace Defaulting */ public static final String NULL_NS_URI = ""; /** *

Prefix to use to represent the default XML Namespace.

* *

Defined by the XML specification to be "".

* * @see * Namespaces in XML, 3. Qualified Names */ public static final String DEFAULT_NS_PREFIX = ""; /** *

The official XML Namespace name URI.

* *

Defined by the XML specification to be * "http://www.w3.org/XML/1998/namespace".

* * @see * Namespaces in XML, 3. Qualified Names */ public static final String XML_NS_URI = "http://www.w3.org/XML/1998/namespace"; /** *

The official XML Namespace prefix.

* *

Defined by the XML specification to be "xml".

* * @see * Namespaces in XML, 3. Qualified Names< */ public static final String XML_NS_PREFIX = "xml"; /** *

The official XML attribute used for specifying XML Namespace * declarations, {@link #XMLNS_ATTRIBUTE * XMLConstants.XMLNS_ATTRIBUTE}, Namespace name URI.

* *

Defined by the XML specification to be * "http://www.w3.org/2000/xmlns/".

* * @see * Namespaces in XML, 3. Qualified Names * @see * Namespaces in XML Errata */ public static final String XMLNS_ATTRIBUTE_NS_URI = "http://www.w3.org/2000/xmlns/"; /** *

The official XML attribute used for specifying XML Namespace * declarations.

* *

It is NOT valid to use as a * prefix. Defined by the XML specification to be * "xmlns".

* * @see * Namespaces in XML, 3. Qualified Names */ public static final String XMLNS_ATTRIBUTE = "xmlns"; /** *

W3C XML Schema Namespace URI.

* *

Defined to be "http://www.w3.org/2001/XMLSchema". * * @see * XML Schema Part 1: * Structures, 2.6 Schema-Related Markup in Documents Being Validated */ public static final String W3C_XML_SCHEMA_NS_URI = "http://www.w3.org/2001/XMLSchema"; /** *

W3C XML Schema Instance Namespace URI.

* *

Defined to be "http://www.w3.org/2001/XMLSchema-instance".

* * @see * XML Schema Part 1: * Structures, 2.6 Schema-Related Markup in Documents Being Validated */ public static final String W3C_XML_SCHEMA_INSTANCE_NS_URI = "http://www.w3.org/2001/XMLSchema-instance"; /** *

W3C XPath Datatype Namespace URI.

* *

Defined to be "http://www.w3.org/2003/11/xpath-datatypes".

* * @see XQuery 1.0 and XPath 2.0 Data Model */ public static final String W3C_XPATH_DATATYPE_NS_URI = "http://www.w3.org/2003/11/xpath-datatypes"; /** *

XML Document Type Declaration Namespace URI as an arbitrary value.

* *

Since not formally defined by any existing standard, arbitrarily define to be "http://www.w3.org/TR/REC-xml". */ public static final String XML_DTD_NS_URI = "http://www.w3.org/TR/REC-xml"; /** *

RELAX NG Namespace URI.

* *

Defined to be "http://relaxng.org/ns/structure/1.0".

* * @see RELAX NG Specification */ public static final String RELAXNG_NS_URI = "http://relaxng.org/ns/structure/1.0"; /** *

Feature for secure processing.

* *
    *
  • * true instructs the implementation to process XML securely. * This may set limits on XML constructs to avoid conditions such as denial of service attacks. *
  • *
  • * false instructs the implementation to process XML according to the letter of the XML specifications * ignoring security issues such as limits on XML constructs to avoid conditions such as denial of service attacks. *
  • *
*/ public static final String FEATURE_SECURE_PROCESSING = "http://javax.xml.XMLConstants/feature/secure-processing"; }




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