https://xerces.apache.org/xerces2-j/: 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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package org.apache.xerces.impl;

import org.apache.xerces.xni.Augmentations;
import org.apache.xerces.xni.XMLResourceIdentifier;
import org.apache.xerces.xni.XNIException;


The entity handler interface defines methods to report information
about the start and end of entities.

Author:Andy Clark, IBM
See Also:
@xerces.internal
Version:$Id: XMLEntityHandler.java 446761 2006-09-15 21:59:29Z mrglavas $
/**
 * The entity handler interface defines methods to report information
 * about the start and end of entities.
 * 
 * @xerces.internal

 *
 * @see org.apache.xerces.impl.XMLEntityScanner
 *
 * @author Andy Clark, IBM
 *
 * @version $Id: XMLEntityHandler.java 446761 2006-09-15 21:59:29Z mrglavas $
 */
public interface XMLEntityHandler {

    //
    // XMLEntityHandler methods
    //

    
This method notifies of the start of an entity. The DTD has the 
pseudo-name of "[dtd]" parameter entity names start with '%'; and 
general entities are just specified by their name.

Params:
  • name –     The name of the entity.
  • identifier – The resource identifier.
  • encoding – The auto-detected IANA encoding name of the entity
                stream. This value will be null in those situations
                where the entity encoding is not auto-detected (e.g.
                internal entities or a document entity that is
                parsed from a java.io.Reader).
  • augs –     Additional information that may include infoset augmentations
Throws:
/**
     * This method notifies of the start of an entity. The DTD has the 
     * pseudo-name of "[dtd]" parameter entity names start with '%'; and 
     * general entities are just specified by their name.
     * 
     * @param name     The name of the entity.
     * @param identifier The resource identifier.
     * @param encoding The auto-detected IANA encoding name of the entity
     *                 stream. This value will be null in those situations
     *                 where the entity encoding is not auto-detected (e.g.
     *                 internal entities or a document entity that is
     *                 parsed from a java.io.Reader).
     * @param augs     Additional information that may include infoset augmentations
     * 
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void startEntity(String name, 
                            XMLResourceIdentifier identifier,
                            String encoding, Augmentations augs) throws XNIException;

    
This method notifies the end of an entity. The DTD has the pseudo-name
of "[dtd]" parameter entity names start with '%'; and general entities 
are just specified by their name.

Params:
  • name – The name of the entity.
  • augs – Additional information that may include infoset augmentations
Throws:
/**
     * This method notifies the end of an entity. The DTD has the pseudo-name
     * of "[dtd]" parameter entity names start with '%'; and general entities 
     * are just specified by their name.
     * 
     * @param name The name of the entity.
     * @param augs Additional information that may include infoset augmentations
     * 
     * @throws XNIException Thrown by handler to signal an error.
     */
    public void endEntity(String name, Augmentations augs) throws XNIException;

} // interface XMLEntityHandler