org.geotools.xml

Class XMLElementHandler

Object

XMLElementHandler

All Implemented Interfaces:

Serializable

Direct Known Subclasses:

ComplexElementHandler, DocumentHandler, IgnoreHandler, SimpleElementHandler

public abstract class XMLElementHandler
extends Object
implements Serializable

Intended to act as both a definition and a generic handler.

Author:

dzwiers, Refractions Research, Inc. http://www.refractions.net, $Author:$ (last modification)

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
protected static Logger	logger the logger -- should be used for debugging (assuming there are bugs LOL)

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	XMLElementHandler() Creates a new XSIElementHandler object.

Method Summary

Modifier and Type	Method and Description
void	characters(String text) This method throws a SAXNotSupportedException if it is called and not overwritten.
abstract void	endElement(URI namespaceURI, String localName, Map hints) handles SAX end Element events.
abstract Element	getElement() This returns the Element specified.
abstract XMLElementHandler	getHandler(URI namespaceURI, String localName, Map hints) This will find an appropriate XMLElementHandler for the specified child if appropriate.
abstract String	getName() This returns the name of the element being represented by this handler.
abstract Object	getValue() This method will get the value of the element depending on it's type.
static void	setLogLevel(Level l) Sets the logger level for all XMLElementHandlers.
abstract void	startElement(URI namespaceURI, String localName, Attributes attr) handles SAX start Element events.

Methods inherited from class Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Field Detail

logger

protected static final Logger logger

the logger -- should be used for debugging (assuming there are bugs LOL)

Constructor Detail

XMLElementHandler

protected XMLElementHandler()

Creates a new XSIElementHandler object. Intended to limit creation to the sub-packages

Method Detail

characters

public void characters(String text)
                throws SAXException

This method throws a SAXNotSupportedException if it is called and not overwritten. When overridding this method, you should be careful to understand that it may be called more than once per element. Therefore it would be advisable to log the text and handle the text's interpretation at a later time (

Parameters:

text -

Throws:

SAXException

SAXNotSupportedException

See Also:

endElement(String,String)).

endElement

public abstract void endElement(URI namespaceURI,
                                String localName,
                                Map hints)
                         throws SAXException,
                                OperationNotSupportedException

handles SAX end Element events. This matches the end of the element declaration in the document ... and responds to the event generated by the SAX parser. This is an opportunity to complete some post-processing.

Parameters:

namespaceURI -

localName -

hints - DOCUMENT ME!

Throws:

SAXException

OperationNotSupportedException

See Also:

SchemaContentHandler#endElement

startElement

public abstract void startElement(URI namespaceURI,
                                  String localName,
                                  Attributes attr)
                           throws SAXException

handles SAX start Element events. This matches the start of the element declaration in the document ... and responds to the event generated by the SAX parser. This is an opportunity to complete some pre-processing.

Parameters:

namespaceURI -

localName -

attr -

Throws:

SAXException

See Also:

SchemaContentHandler#startElement

getHandler

public abstract XMLElementHandler getHandler(URI namespaceURI,
                                             String localName,
                                             Map hints)
                                      throws SAXException

This will find an appropriate XMLElementHandler for the specified child if appropriate. This method may return or throw an exception, depending on the severity, if an error occurs. This method should be used to complete a SAX parse of a document for which the Schema is known, and parsed.

Parameters:

namespaceURI -

localName -

hints - DOCUMENT ME!

Returns:

XMLElementHandler, or null

Throws:

SAXException

getValue

public abstract Object getValue()
                         throws SAXException

This method will get the value of the element depending on it's type.

Returns:

Object (may be null)

Throws:

SAXException

See Also:

Type#getValue

getName

public abstract String getName()

This returns the name of the element being represented by this handler. This name matches the name specified in the Schema.

Returns:

The Name (may not be null)

getElement

public abstract Element getElement()

This returns the Element specified.

Returns:

Element (may not be null)

setLogLevel

public static void setLogLevel(Level l)

Sets the logger level for all XMLElementHandlers.

Parameters:

l -