protected Validator() 
{

}

Constructor for derived classes.

The constructor does nothing.

Derived classes must create Validator objects that have null ErrorHandler and null LSResourceResolver .

 abstract public ErrorHandler getErrorHandler()
Gets the current ErrorHandler  set to this Validator .

 public boolean getFeature(String name) throws SAXNotRecognizedException, SAXNotSupportedException 
{
        if(name==null) throw new NullPointerException("the name parameter is null");
        throw new SAXNotRecognizedException(name);
}

Look up the value of a feature flag.

The feature name is any fully-qualified URI. It is possible for a Validator to recognize a feature name but temporarily be unable to return its value. Some feature values may be available only in specific contexts, such as before, during, or after a validation.

Implementors are free (and encouraged) to invent their own features, using names built on their own URIs.

 public Object getProperty(String name) throws SAXNotRecognizedException, SAXNotSupportedException 
{
        if(name==null) throw new NullPointerException("the name parameter is null");
        throw new SAXNotRecognizedException(name);
}

Look up the value of a property.

The property name is any fully-qualified URI. It is possible for a Validator to recognize a property name but temporarily be unable to return its value. Some property values may be available only in specific contexts, such as before, during, or after a validation.

Validator s are not required to recognize any specific property names.

Implementors are free (and encouraged) to invent their own properties, using names built on their own URIs.

 abstract public LSResourceResolver getResourceResolver()
Gets the current LSResourceResolver  set to this Validator .

 abstract public  void reset()
Reset this Validator to its original configuration.

Validator is reset to the same state as when it was created with
Schema#newValidator() .
reset() is designed to allow the reuse of existing Validators
thus saving resources associated with the creation of new Validators.

The reset Validator is not guaranteed to have the same LSResourceResolver  or ErrorHandler 
Objects, e.g. Object#equals(Object obj) .  It is guaranteed to have a functionally equal
LSResourceResolver and ErrorHandler.

 abstract public  void setErrorHandler(ErrorHandler errorHandler)
Sets the ErrorHandler  to receive errors encountered
during the validate method invocation.


Error handler can be used to customize the error handling process
during a validation. When an ErrorHandler  is set,
errors found during the validation will be first sent
to the ErrorHandler .


The error handler can abort further validation immediately
by throwing SAXException  from the handler. Or for example
it can print an error to the screen and try to continue the
validation by returning normally from the ErrorHandler  


If any Throwable  is thrown from an ErrorHandler ,
the caller of the validate method will be thrown
the same Throwable  object.


Validator  is not allowed to
throw SAXException  without first reporting it to
ErrorHandler .


When the ErrorHandler  is null, the implementation will
behave as if the following ErrorHandler  is set:
class DraconianErrorHandler implements ErrorHandler  {
    public void fatalError( org.xml.sax.SAXParseException  e ) throws SAXException  {
        throw e;
    }
    public void error( org.xml.sax.SAXParseException  e ) throws SAXException  {
        throw e;
    }
    public void warning( org.xml.sax.SAXParseException  e ) throws SAXException  {
        // noop
    }
}



When a new Validator  object is created, initially
this field is set to null.

 public  void setFeature(String name,
    boolean value) throws SAXNotRecognizedException, SAXNotSupportedException 
{
        if(name==null) throw new NullPointerException("the name parameter is null");
        throw new SAXNotRecognizedException(name);
}

Set the value of a feature flag.

Feature can be used to control the way a Validator parses schemas, although Validator s are not required to recognize any specific property names.

The feature name is any fully-qualified URI. It is possible for a Validator to expose a feature value but to be unable to change the current value. Some feature values may be immutable or mutable only in specific contexts, such as before, during, or after a validation.

 public  void setProperty(String name,
    Object object) throws SAXNotRecognizedException, SAXNotSupportedException 
{
        if(name==null) throw new NullPointerException("the name parameter is null");
        throw new SAXNotRecognizedException(name);
}

Set the value of a property.

The property name is any fully-qualified URI. It is possible for a Validator to recognize a property name but to be unable to change the current value. Some property values may be immutable or mutable only in specific contexts, such as before, during, or after a validation.

Validator s are not required to recognize setting any specific property names.

 abstract public  void setResourceResolver(LSResourceResolver resourceResolver)
Sets the LSResourceResolver  to customize
resource resolution while in a validation episode.


Validator  uses a LSResourceResolver 
when it needs to locate external resources while a validation,
although exactly what constitutes "locating external resources" is
up to each schema language.


When the LSResourceResolver  is null, the implementation will
behave as if the following LSResourceResolver  is set:
class DumbLSResourceResolver implements LSResourceResolver  {
    public org.w3c.dom.ls.LSInput  resolveResource(
        String publicId, String systemId, String baseURI) {
        
        return null; // always return null
    }
}



If a LSResourceResolver  throws a RuntimeException 
 (or instances of its derived classes),
then the Validator  will abort the parsing and  
the caller of the validate method will receive
the same RuntimeException . 


When a new Validator  object is created, initially
this field is set to null.

 public  void validate(Source source) throws SAXException, IOException 
{
        validate(source, null);
}

Validates the specified input.

This is just a convenience method of:

validate(source,null);

 abstract public  void validate(Source source,
    Result result) throws SAXException, IOException
Validates the specified input and send the augmented validation
result to the specified output.


This method places the following restrictions on the types of
the Source /Result  accepted.

Source /Result  accepted:


 

  

  
javax.xml.transform.sax.SAXSource 
  
javax.xml.transform.dom.DOMSource 
  
javax.xml.transform.stax.StAXSource 
  
javax.xml.transform.stream.StreamSource 
 


 

  
null
  
OK
  
OK
  
OK
  
OK
 
 

  
javax.xml.transform.sax.SAXResult 
  
OK
  
Err
  
Err
  
Err
 
 

  
javax.xml.transform.dom.DOMResult 
  
Err
  
OK
  
Err
  
Err
 
 

  
javax.xml.transform.stax.StAXResult 
  
Err
  
Err
  
OK
  
Err
 
 

  
javax.xml.transform.stream.StreamResult 
  
Err
  
Err
  
Err
  
OK
 




To validate one Source  into another kind of Result , use the identity transformer
(see javax.xml.transform.TransformerFactory#newTransformer() ).


Errors found during the validation is sent to the specified
ErrorHandler .


If a document is valid, or if a document contains some errors
but none of them were fatal and the ErrorHandler  didn't
throw any exception, then the method returns normally.