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 * 
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 * General Public License version 2 for more details (a copy is
 * included at /legal/license.txt).
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// DTDHandler.java - SAX DTD handler.
// http://www.saxproject.org
// Written by David Megginson
// No warranty; no copyright -- use this as you will.

package org.xml.sax;

/**
 * Receive notification of basic DTD-related events.
 *
 * 

If a SAX application needs information about notations and * unparsed entities, then the application implements this * interface and registers an instance with the SAX parser using * the parser's setDTDHandler method. The parser uses the * instance to report notation and unparsed entity declarations to * the application.

* *

Note that this interface includes only those DTD events that * the XML recommendation requires processors to report: * notation and unparsed entity declarations.

* *

The SAX parser may report these events in any order, regardless * of the order in which the notations and unparsed entities were * declared; however, all DTD events must be reported after the * document handler's startDocument event, and before the first * startElement event.

* *

It is up to the application to store the information for * future use (perhaps in a hash table or object tree). * If the application encounters attributes of type "NOTATION", * "ENTITY", or "ENTITIES", it can use the information that it * obtained through this interface to find the entity and/or * notation corresponding with the attribute value.

* * @since SAX 1.0 * @author David Megginson * @see org.xml.sax.XMLReader#setDTDHandler */ public interface DTDHandler { /** * Receive notification of a notation declaration event. * *

It is up to the application to record the notation for later * reference, if necessary; * notations may appear as attribute values and in unparsed entity * declarations, and are sometime used with processing instruction * target names.

* *

At least one of publicId and systemId must be non-null. * If a system identifier is present, and it is a URL, the SAX * parser must resolve it fully before passing it to the * application through this event.

* *

There is no guarantee that the notation declaration will be * reported before any unparsed entities that use it.

* * @param name The notation name. * @param publicId The notation's public identifier, or null if * none was given. * @param systemId The notation's system identifier, or null if * none was given. * @exception org.xml.sax.SAXException Any SAX exception, possibly * wrapping another exception. * @see #unparsedEntityDecl * @see org.xml.sax.Attributes */ public abstract void notationDecl (String name, String publicId, String systemId) throws SAXException; /** * Receive notification of an unparsed entity declaration event. * *

Note that the notation name corresponds to a notation * reported by the {@link #notationDecl notationDecl} event. * It is up to the application to record the entity for later * reference, if necessary; * unparsed entities may appear as attribute values. *

* *

If the system identifier is a URL, the parser must resolve it * fully before passing it to the application.

* * @exception org.xml.sax.SAXException Any SAX exception, possibly * wrapping another exception. * @param name The unparsed entity's name. * @param publicId The entity's public identifier, or null if none * was given. * @param systemId The entity's system identifier. * @param notationName The name of the associated notation. * @see #notationDecl * @see org.xml.sax.Attributes */ public abstract void unparsedEntityDecl (String name, String publicId, String systemId, String notationName) throws SAXException; } // end of DTDHandler.java




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