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Xerces2 is the next generation of high performance, fully compliant XML parsers in the Apache Xerces family. This new version of Xerces introduces the Xerces Native Interface (XNI), a complete framework for building parser components and configurations that is extremely modular and easy to program. The Apache Xerces2 parser is the reference implementation of XNI but other parser components, configurations, and parsers can be written using the Xerces Native Interface. For complete design and implementation documents, refer to the XNI Manual. Xerces2 is a fully conforming XML Schema 1.0 processor. A partial experimental implementation of the XML Schema 1.1 Structures and Datatypes Working Drafts (December 2009) and an experimental implementation of the XML Schema Definition Language (XSD): Component Designators (SCD) Candidate Recommendation (January 2010) are provided for evaluation. For more information, refer to the XML Schema page. Xerces2 also provides a complete implementation of the Document Object Model Level 3 Core and Load/Save W3C Recommendations and provides a complete implementation of the XML Inclusions (XInclude) W3C Recommendation. It also provides support for OASIS XML Catalogs v1.1. Xerces2 is able to parse documents written according to the XML 1.1 Recommendation, except that it does not yet provide an option to enable normalization checking as described in section 2.13 of this specification. It also handles namespaces according to the XML Namespaces 1.1 Recommendation, and will correctly serialize XML 1.1 documents if the DOM level 3 load/save APIs are in use.

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/*
 * Copyright (c) 2004 World Wide Web Consortium,
 *
 * (Massachusetts Institute of Technology, European Research Consortium for
 * Informatics and Mathematics, Keio University). All Rights Reserved. This
 * work is distributed under the W3C(r) Software License [1] in the hope that
 * it will be useful, but WITHOUT ANY WARRANTY; without even the implied
 * warranty of MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.
 *
 * [1] http://www.w3.org/Consortium/Legal/2002/copyright-software-20021231
 */

package org.w3c.dom;

/**
 * EntityReference nodes may be used to represent an entity 
 * reference in the tree. Note that character references and references to 
 * predefined entities are considered to be expanded by the HTML or XML 
 * processor so that characters are represented by their Unicode equivalent 
 * rather than by an entity reference. Moreover, the XML processor may 
 * completely expand references to entities while building the 
 * Document, instead of providing EntityReference 
 * nodes. If it does provide such nodes, then for an 
 * EntityReference node that represents a reference to a known 
 * entity an Entity exists, and the subtree of the 
 * EntityReference node is a copy of the Entity 
 * node subtree. However, the latter may not be true when an entity contains 
 * an unbound namespace prefix. In such a case, because the namespace prefix 
 * resolution depends on where the entity reference is, the descendants of 
 * the EntityReference node may be bound to different namespace 
 * URIs. When an EntityReference node represents a reference to 
 * an unknown entity, the node has no children and its replacement value, 
 * when used by Attr.value for example, is empty.
 * As for Entity nodes, EntityReference nodes and 
 * all their descendants are readonly.
 * 
Note: EntityReference nodes may cause element 
 * content and attribute value normalization problems when, such as in XML 
 * 1.0 and XML Schema, the normalization is performed after entity reference 
 * are expanded.
 * See also the Document Object Model (DOM) Level 3 Core Specification.
 */
public interface EntityReference extends Node {
}