Java in a Nutshell, 5th Edition [Electronic resources] نسخه متنی

A
ValidatorHandler is
an org.xml.sax.ContentHandler that uses the
streaming SAX API to validate an XML document against the
Schema from which the
ValidatorHandler was derived. The
Validator class can be used to validate a
SAXSource, but ValidatorHandler
provides lower-level access to the SAX API.

If the document is not valid, one of the
ContentHandler methods throws a
SAXException that propagates up to your code. As
with the Validator class, you can alter this by
specifying a custom org.xml.sax.ErrorHandler
class.

ValidatorHandler can be used as a filter for SAX
parsing events. If you pass a ContentHandler to
setContentHandler( ), the
ValidatorHandler augments the source document with
attribute defaults from the schema and invokes the appropriate
callback methods on the ContentHandler you supply.
If you are interested in attribute and element type information
provided by the schema, your ContentHandler can
use the TypeInfoProvider obtained from the
ValidatorHandler getTypeInfoProvider(
).

Figure 20-18. javax.xml.validation.ValidatorHandler

public abstract class

ValidatorHandler implements org.xml.sax.ContentHandler {
// Protected Constructors
protected

ValidatorHandler ( );
// Public Instance Methods
public abstract org.xml.sax.ContentHandler

getContentHandler ( );
public abstract org.xml.sax.ErrorHandler

getErrorHandler ( );
public boolean

getFeature (String

name )
throws org.xml.sax.SAXNotRecognizedException, org.xml.sax.SAXNotSupportedException;
public Object

getProperty (String

name )
throws org.xml.sax.SAXNotRecognizedException, org.xml.sax.SAXNotSupportedException;
public abstract org.w3c.dom.ls.LSResourceResolver

getResourceResolver ( );
public abstract TypeInfoProvider

getTypeInfoProvider ( );
public abstract void

setContentHandler (org.xml.sax.ContentHandler

receiver );
public abstract void

setErrorHandler (org.xml.sax.ErrorHandler

errorHandler );
public void

setFeature (String

name , boolean

value )
throws org.xml.sax.SAXNotRecognizedException, org.xml.sax.SAXNotSupportedException;
public void

setProperty (String

name , Object

object )
throws org.xml.sax.SAXNotRecognizedException, org.xml.sax.SAXNotSupportedException;
public abstract void

setResourceResolver (org.w3c.dom.ls.LSResourceResolver

resourceResolver );
}

Returned By

Schema.newValidatorHandler( )