This extension interface defines methods that a
SAX parser can call to notify an application about the lexical
structure of an XML document. If your application requires this kind
of information (for example if it wants to create a new document that
has a similar structure to the one it reads), then pass an object
that implements this interface to the setProperty(
) method of an XMLReader, using the
property name
"http://www.xml.org/sax/properties/lexical-handler".
Because this is an extension handler, SAX parsers are not required to
support it, and may throw a
SAXNotRecognizedException or a
SAXNotSupportedException when you attempt to
register a DeclHandler.
If a LexicalHandler is successfully registered on
an XMLReader, then the parser will call
startDTD( ) and endDTD( ) to
report the beginning and end of the document's DTD.
It will call startCDATA( ) and endCDATA(
) to report the start and end of a CDATA
section. The content of the CDATA section will be
reported through the characters( ) method of the
ContentHandler interface. When the parser expands
an entity, it first calls startEntity( ) to
specify the name of the entity it is about to expand, and then calls
endEntity( ) when the entity expansion is
complete. Finally, whenever the parser encounters an XML comment, it
calls the comment( ) method.
public interface LexicalHandler {
// Public Instance Methods
void comment(char[ ] ch, int start, int length)
throws org.xml.sax.SAXException;
void endCDATA( ) throws org.xml.sax.SAXException;
void endDTD( ) throws org.xml.sax.SAXException;
void endEntity(String name) throws org.xml.sax.SAXException;
void startCDATA( ) throws org.xml.sax.SAXException;
void startDTD(String name, String publicId, String systemId)
throws org.xml.sax.SAXException;
void startEntity(String name) throws org.xml.sax.SAXException;
}
