- // DeclHandler.java - Optional handler for DTD declaration events.
- // Public Domain: no warranty.
- // $Id: DeclHandler.java,v 1.1 2001/05/20 03:12:57 curcuru Exp $
-
- package org.xml.sax.ext;
-
- import org.xml.sax.SAXException;
-
-
- /**
- * SAX2 extension handler for DTD declaration events.
- *
- * <blockquote>
- * <em>This module, both source code and documentation, is in the
- * Public Domain, and comes with <strong>NO WARRANTY</strong>.</em>
- * </blockquote>
- *
- * <p>This is an optional extension handler for SAX2 to provide
- * information about DTD declarations in an XML document. XML
- * readers are not required to support this handler, and this
- * handler is not included in the core SAX2 distribution.</p>
- *
- * <p>Note that data-related DTD declarations (unparsed entities and
- * notations) are already reported through the {@link
- * org.xml.sax.DTDHandler DTDHandler} interface.</p>
- *
- * <p>If you are using the declaration handler together with a lexical
- * handler, all of the events will occur between the
- * {@link org.xml.sax.ext.LexicalHandler#startDTD startDTD} and the
- * {@link org.xml.sax.ext.LexicalHandler#endDTD endDTD} events.</p>
- *
- * <p>To set the DeclHandler for an XML reader, use the
- * {@link org.xml.sax.XMLReader#setProperty setProperty} method
- * with the propertyId "http://xml.org/sax/properties/declaration-handler".
- * If the reader does not support declaration events, it will throw a
- * {@link org.xml.sax.SAXNotRecognizedException SAXNotRecognizedException}
- * or a
- * {@link org.xml.sax.SAXNotSupportedException SAXNotSupportedException}
- * when you attempt to register the handler.</p>
- *
- * @since 1.0
- * @author David Megginson,
- * <a href="mailto:sax@megginson.com">sax@megginson.com</a>
- * @version 1.0
- * @see org.xml.sax.XMLReader
- */
- public interface DeclHandler
- {
-
- /**
- * Report an element type declaration.
- *
- * <p>The content model will consist of the string "EMPTY", the
- * string "ANY", or a parenthesised group, optionally followed
- * by an occurrence indicator. The model will be normalized so
- * that all parameter entities are fully resolved and all whitespace
- * is removed,and will include the enclosing parentheses. Other
- * normalization (such as removing redundant parentheses or
- * simplifying occurrence indicators) is at the discretion of the
- * parser.</p>
- *
- * @param name The element type name.
- * @param model The content model as a normalized string.
- * @exception SAXException The application may raise an exception.
- */
- public abstract void elementDecl (String name, String model)
- throws SAXException;
-
-
- /**
- * Report an attribute type declaration.
- *
- * <p>Only the effective (first) declaration for an attribute will
- * be reported. The type will be one of the strings "CDATA",
- * "ID", "IDREF", "IDREFS", "NMTOKEN", "NMTOKENS", "ENTITY",
- * "ENTITIES", a parenthesized token group with
- * the separator "|" and all whitespace removed, or the word
- * "NOTATION" followed by a space followed by a parenthesized
- * token group with all whitespace removed.</p>
- *
- * <p>Any parameter entities in the attribute value will be
- * expanded, but general entities will not.</p>
- *
- * @param eName The name of the associated element.
- * @param aName The name of the attribute.
- * @param type A string representing the attribute type.
- * @param valueDefault A string representing the attribute default
- * ("#IMPLIED", "#REQUIRED", or "#FIXED") or null if
- * none of these applies.
- * @param value A string representing the attribute's default value,
- * or null if there is none.
- * @exception SAXException The application may raise an exception.
- */
- public abstract void attributeDecl (String eName,
- String aName,
- String type,
- String valueDefault,
- String value)
- throws SAXException;
-
-
- /**
- * Report an internal entity declaration.
- *
- * <p>Only the effective (first) declaration for each entity
- * will be reported. All parameter entities in the value
- * will be expanded, but general entities will not.</p>
- *
- * @param name The name of the entity. If it is a parameter
- * entity, the name will begin with '%'.
- * @param value The replacement text of the entity.
- * @exception SAXException The application may raise an exception.
- * @see #externalEntityDecl
- * @see org.xml.sax.DTDHandler#unparsedEntityDecl
- */
- public abstract void internalEntityDecl (String name, String value)
- throws SAXException;
-
-
- /**
- * Report a parsed external entity declaration.
- *
- * <p>Only the effective (first) declaration for each entity
- * will be reported.</p>
- *
- * @param name The name of the entity. If it is a parameter
- * entity, the name will begin with '%'.
- * @param publicId The declared public identifier of the entity, or
- * null if none was declared.
- * @param systemId The declared system identifier of the entity.
- * @exception SAXException The application may raise an exception.
- * @see #internalEntityDecl
- * @see org.xml.sax.DTDHandler#unparsedEntityDecl
- */
- public abstract void externalEntityDecl (String name, String publicId,
- String systemId)
- throws SAXException;
-
- }
-
- // end of DeclHandler.java