org.whattf.checker
Class Checker

java.lang.Object
  org.whattf.checker.Checker

All Implemented Interfaces:

ContentHandler

Direct Known Subclasses:

DebugChecker, NormalizationChecker, SignificantInlineChecker, TableChecker, TextContentChecker, UsemapChecker

public abstract class Checker
extends Object
implements ContentHandler

The abstract base class for SAX-based content checkers that listen to the ContentHandler events and emit errors and warnings to an ErrorHandler.

Always delegates ignorableWhitespace() to characters(). The other ContentHandler methods here are stubs that do nothing. Subclasses, therefore, never need to call the superclass methods.

Version:

$Id: Checker.java 206 2007-10-15 07:51:34Z hsivonen $

Author:

hsivonen

Field Summary

private ErrorHandler	errorHandler
private Locator	locator

Constructor Summary

Checker()
Constructor.

Method Summary

void	characters(char[] ch, int start, int length)
void	endDocument() Calls reset().
void	endElement(String uri, String localName, String qName)
void	endPrefixMapping(String prefix)
void	err(String message) Emit an error.
void	err(String message, Locator overrideLocator) Emit an error with specified locator.
Locator	getDocumentLocator() Returns the locator.
ErrorHandler	getErrorHandler() Returns the errorHandler.
void	ignorableWhitespace(char[] ch, int start, int length) Calls characters().
void	processingInstruction(String target, String data)
void	reset() Does nothing.
void	setDocumentLocator(Locator locator)
void	setErrorHandler(ErrorHandler errorHandler) Sets the errorHandler.
void	skippedEntity(String name)
void	startDocument() Calls reset().
void	startElement(String uri, String localName, String qName, Attributes atts)
void	startPrefixMapping(String prefix, String uri)
void	warn(String message) Emit a warning.
void	warn(String message, Locator overrideLocator) Emit a warning with specified locator.

Methods inherited from class java.lang.Object

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

Field Detail

errorHandler

private ErrorHandler errorHandler

locator

private Locator locator

Constructor Detail

Checker

public Checker()

Constructor.

Method Detail

warn

public void warn(String message)
          throws SAXException

Emit a warning. The locator is used.

Parameters:

message - the warning message

Throws:

SAXException - if something goes wrong

warn

public void warn(String message,
                 Locator overrideLocator)
          throws SAXException

Emit a warning with specified locator.

Parameters:

message - the warning message

Throws:

SAXException - if something goes wrong

err

public void err(String message,
                Locator overrideLocator)
         throws SAXException

Emit an error with specified locator.

Parameters:

message - the error message

Throws:

SAXException - if something goes wrong

err

public void err(String message)
         throws SAXException

Emit an error. The locator is used.

Parameters:

message - the error message

Throws:

SAXException - if something goes wrong

reset

public void reset()

Does nothing. Subclasses are expected to override this method with an implementation that clears the state of the checker and releases objects the checker might hold references to.

getErrorHandler

public ErrorHandler getErrorHandler()

Returns the errorHandler.

Returns:

the errorHandler

setErrorHandler

public void setErrorHandler(ErrorHandler errorHandler)

Sets the errorHandler.

Parameters:

errorHandler - the errorHandler to set

getDocumentLocator

public Locator getDocumentLocator()

Returns the locator.

Returns:

the locator

setDocumentLocator

public void setDocumentLocator(Locator locator)

Specified by:

setDocumentLocator in interface ContentHandler

See Also:

ContentHandler.setDocumentLocator(org.xml.sax.Locator)

startDocument

public void startDocument()
                   throws SAXException

Calls reset().

Specified by:

startDocument in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.startDocument()

endDocument

public void endDocument()
                 throws SAXException

Calls reset().

Specified by:

endDocument in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.endDocument()

ignorableWhitespace

public final void ignorableWhitespace(char[] ch,
                                      int start,
                                      int length)
                               throws SAXException

Calls characters().

Specified by:

ignorableWhitespace in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.ignorableWhitespace(char[], int, int)

characters

public void characters(char[] ch,
                       int start,
                       int length)
                throws SAXException

Specified by:

characters in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.characters(char[], int, int)

endElement

public void endElement(String uri,
                       String localName,
                       String qName)
                throws SAXException

Specified by:

endElement in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.endElement(java.lang.String, java.lang.String, java.lang.String)

endPrefixMapping

public void endPrefixMapping(String prefix)
                      throws SAXException

Specified by:

endPrefixMapping in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.endPrefixMapping(java.lang.String)

processingInstruction

public void processingInstruction(String target,
                                  String data)
                           throws SAXException

Specified by:

processingInstruction in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.processingInstruction(java.lang.String, java.lang.String)

skippedEntity

public void skippedEntity(String name)
                   throws SAXException

Specified by:

skippedEntity in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.skippedEntity(java.lang.String)

startElement

public void startElement(String uri,
                         String localName,
                         String qName,
                         Attributes atts)
                  throws SAXException

Specified by:

startElement in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.startElement(java.lang.String, java.lang.String, java.lang.String, org.xml.sax.Attributes)

startPrefixMapping

public void startPrefixMapping(String prefix,
                               String uri)
                        throws SAXException

Specified by:

startPrefixMapping in interface ContentHandler

Throws:

SAXException

See Also:

ContentHandler.startPrefixMapping(java.lang.String, java.lang.String)