ml.options

Class SchemaValidator

java.lang.Object

org.xml.sax.helpers.DefaultHandler

ml.options.SchemaValidator

All Implemented Interfaces:

org.xml.sax.ContentHandler, org.xml.sax.DTDHandler, org.xml.sax.EntityResolver, org.xml.sax.ErrorHandler

public class SchemaValidator
extends org.xml.sax.helpers.DefaultHandler

Validator for XML documents using XML schema. This is based on JDK 5.0 and requires no outside library.

Constructor Summary

Constructors

Constructor and Description
SchemaValidator()

Method Summary

Methods

Modifier and Type	Method and Description
void	error(org.xml.sax.SAXParseException ex) A method required by the org.xml.sax.ErrorHandler interface
void	fatalError(org.xml.sax.SAXParseException ex) A method required by the org.xml.sax.ErrorHandler interface
java.lang.String	getError() Retrieve the error message set by the org.xml.sax.ErrorHandler methods.
boolean	validate(java.io.Reader xmlReader) The actual validation method.
void	warning(org.xml.sax.SAXParseException ex) A method required by the org.xml.sax.ErrorHandler interface

Methods inherited from class org.xml.sax.helpers.DefaultHandler

characters, endDocument, endElement, endPrefixMapping, ignorableWhitespace, notationDecl, processingInstruction, resolveEntity, setDocumentLocator, skippedEntity, startDocument, startElement, startPrefixMapping, unparsedEntityDecl

Methods inherited from class java.lang.Object

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

Constructor Detail

SchemaValidator

public SchemaValidator()

Method Detail

validate

public boolean validate(java.io.Reader xmlReader)
                 throws java.io.IOException,
                        org.xml.sax.SAXException

The actual validation method. If validation is not successful, the errors found can be retrieved using the getError() method.

Parameters:

xmlReader - The reader for the XML file to validate

Returns:

true if the XML file could be validated against the XML schema, else false

Throws:

java.io.IOException

org.xml.sax.SAXException

getError

public java.lang.String getError()

Retrieve the error message set by the org.xml.sax.ErrorHandler methods. If no error has been found, null is returned.

Returns:

A string describing the error encountered

warning

public void warning(org.xml.sax.SAXParseException ex)
             throws org.xml.sax.SAXException

A method required by the org.xml.sax.ErrorHandler interface

Specified by:

warning in interface org.xml.sax.ErrorHandler

Overrides:

warning in class org.xml.sax.helpers.DefaultHandler

Parameters:

ex - A parsing exception

Throws:

org.xml.sax.SAXException

error

public void error(org.xml.sax.SAXParseException ex)
           throws org.xml.sax.SAXException

A method required by the org.xml.sax.ErrorHandler interface

Specified by:

error in interface org.xml.sax.ErrorHandler

Overrides:

error in class org.xml.sax.helpers.DefaultHandler

Parameters:

ex - A parsing exception

Throws:

org.xml.sax.SAXException

fatalError

public void fatalError(org.xml.sax.SAXParseException ex)
                throws org.xml.sax.SAXException

A method required by the org.xml.sax.ErrorHandler interface

Specified by:

fatalError in interface org.xml.sax.ErrorHandler

Overrides:

fatalError in class org.xml.sax.helpers.DefaultHandler

Parameters:

ex - A parsing exception

Throws:

org.xml.sax.SAXException