org.iso_relax.verifier.impl
Class VerifierImpl

java.lang.Object
  |
  +--org.iso_relax.verifier.impl.VerifierImpl

All Implemented Interfaces:

Verifier

public abstract class VerifierImpl

extends java.lang.Object

implements Verifier

Partial implementation of Verifier.

This class is useful as the base class of the verifier implementation.

The only remaining method that has to be implemented by the derived class is the getVerifierHandler method. Please be noted that applications can call the setErrorHandler method after the getVerifierHandler method and that change should take effect.

Version:

$Id: VerifierImpl.java,v 1.4 2003/05/30 23:46:33 kkawa Exp $

Author:

Kohsuke KAWAGUCHI

Field Summary

protected EntityResolver	entityResolver
protected ErrorHandler	errorHandler
protected XMLReader	reader

Fields inherited from interface org.iso_relax.verifier.Verifier

FEATURE_FILTER, FEATURE_HANDLER

Constructor Summary

protected

VerifierImpl()

Method Summary

java.lang.Object	getProperty(java.lang.String property) Gets a property value
VerifierFilter	getVerifierFilter() Gets a VerifierFilter.
abstract VerifierHandler	getVerifierHandler() Gets a VerifierHandler.
boolean	isFeature(java.lang.String feature) Checks whether a feature is supported or not.
protected void	prepareXMLReader() Creates and sets a sole instance of XMLReader which will be used by this verifier.
void	setEntityResolver(EntityResolver resolver) Sets a EntityResolver to resolve external entity locations.
void	setErrorHandler(ErrorHandler handler) Sets a ErrorHandler that receives validation errors/warnings.
void	setFeature(java.lang.String feature, boolean value) Sets a value to a feature.
void	setProperty(java.lang.String property, java.lang.Object value) Sets a property value
boolean	verify(java.io.File f) validates an XML document.
boolean	verify(InputSource source) validates an XML document.
boolean	verify(Node node) validates an XML document.
boolean	verify(java.lang.String uri) validates an XML document.

Methods inherited from class java.lang.Object

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

Field Detail

reader

protected XMLReader reader

errorHandler

protected ErrorHandler errorHandler

entityResolver

protected EntityResolver entityResolver

Constructor Detail

VerifierImpl

protected VerifierImpl()
                throws VerifierConfigurationException

Method Detail

prepareXMLReader

protected void prepareXMLReader()
                         throws VerifierConfigurationException

Creates and sets a sole instance of XMLReader which will be used by this verifier.

VerifierConfigurationException

isFeature

public boolean isFeature(java.lang.String feature)
                  throws SAXNotRecognizedException,
                         SAXNotSupportedException

Description copied from interface: Verifier

Checks whether a feature is supported or not.

This method is modeled after SAX2.

Specified by:

isFeature in interface Verifier

Parameters:

feature - feature name

SAXNotRecognizedException

SAXNotSupportedException

setFeature

public void setFeature(java.lang.String feature,
                       boolean value)
                throws SAXNotRecognizedException,
                       SAXNotSupportedException

Description copied from interface: Verifier

Sets a value to a feature.

This method is modeled after SAX2.

Specified by:

setFeature in interface Verifier

Parameters:

feature - feature name

value - feature value

SAXNotRecognizedException

SAXNotSupportedException

getProperty

public java.lang.Object getProperty(java.lang.String property)
                             throws SAXNotRecognizedException,
                                    SAXNotSupportedException

Description copied from interface: Verifier

Gets a property value

This method is modeled after SAX2.

Specified by:

getProperty in interface Verifier

Parameters:

property - property name

SAXNotRecognizedException

SAXNotSupportedException

setProperty

public void setProperty(java.lang.String property,
                        java.lang.Object value)
                 throws SAXNotRecognizedException,
                        SAXNotSupportedException

Description copied from interface: Verifier

Sets a property value

This method is modeled after SAX2.

Specified by:

setProperty in interface Verifier

Parameters:

property - property name

value - property value

SAXNotRecognizedException

SAXNotSupportedException

setErrorHandler

public void setErrorHandler(ErrorHandler handler)

Description copied from interface: Verifier

Sets a ErrorHandler that receives validation errors/warnings.

If no error handler is set explicitly, a verifier implementation will not report any error/warning at all. However, the caller can still obtain the result of validation through the return value.

Conscious developers should always set an error handler explicitly as the default behavior has been changed several times.

Specified by:

setErrorHandler in interface Verifier

Parameters:

handler - this object will receive errors/warning encountered during the validation.

setEntityResolver

public void setEntityResolver(EntityResolver resolver)

Description copied from interface: Verifier

Sets a EntityResolver to resolve external entity locations.

The given entity resolver is used in the Verifier.verify(String) method and the Verifier.verify(InputSource) method.

Specified by:

setEntityResolver in interface Verifier

Parameters:

resolver - EntityResolver

verify

public boolean verify(java.lang.String uri)
               throws SAXException,
                      java.io.IOException

Description copied from interface: Verifier

validates an XML document.

Specified by:

verify in interface Verifier

Parameters:

uri - URI of a document.

Returns:

true if the document is valid. false if otherwise.

SAXException

java.io.IOException

verify

public boolean verify(InputSource source)
               throws SAXException,
                      java.io.IOException

Description copied from interface: Verifier

validates an XML document.

Specified by:

verify in interface Verifier

Parameters:

source - InputSource of a XML document to verify.

Returns:

true if the document is valid. false if otherwise.

SAXException

java.io.IOException

verify

public boolean verify(java.io.File f)
               throws SAXException,
                      java.io.IOException

Description copied from interface: Verifier

validates an XML document.

Specified by:

verify in interface Verifier

Parameters:

f - File to be validated

Returns:

true if the document is valid. false if otherwise.

SAXException

java.io.IOException

verify

public boolean verify(Node node)
               throws SAXException

Description copied from interface: Verifier

validates an XML document.

An implementation is required to accept Document object as the node parameter. If it also implements partial validation, it can also accepts things like Element.

Specified by:

verify in interface Verifier

Parameters:

node - the root DOM node of an XML document.

Returns:

true if the document is valid. false if otherwise.

SAXException

getVerifierHandler

public abstract VerifierHandler getVerifierHandler()
                                            throws SAXException

Description copied from interface: Verifier

Gets a VerifierHandler.

you can use the returned VerifierHandler to validate documents through SAX.

Note that two different invocations of this method can return the same value; this method does NOT necessarily create a new VerifierHandler object.

Specified by:

getVerifierHandler in interface Verifier

SAXException

getVerifierFilter

public VerifierFilter getVerifierFilter()
                                 throws SAXException

Description copied from interface: Verifier

Gets a VerifierFilter.

you can use the returned VerifierHandler to validate documents through SAX.

Note that two different invocations of this method can return the same value; this method does NOT necessarily create a new VerifierFilter object.

Specified by:

getVerifierFilter in interface Verifier

SAXException