org.iso_relax.verifier
Interface Verifier

All Known Implementing Classes:
VerifierImpl

public interface Verifier

An instance of this interface can validates documents.

An instance of this interface can be obtained through the VerifierFactory.newVerifier(java.lang.String) method or Schema.newVerifier() method. Once it is created, an application can use one instance to validate multiple documents.

This interface is not thread-safe and not reentrant. That is, only one thread can use it at any given time, and you can only validate one document at any given time.

Since:
Feb. 23, 2001
Version:
Mar. 4, 2001
Author:
ASAMI, Tomoharu (asami@zeomtech.com), Kohsuke KAWAGUCHI

Method Summary
 java.lang.Object getProperty(java.lang.String property)
          Gets a property value
 VerifierFilter getVerifierFilter()
          Gets a VerifierFilter.
 VerifierHandler getVerifierHandler()
          Gets a VerifierHandler.
 boolean isFeature(java.lang.String feature)
          Checks whether a feature is supported or not.
 void setEntityResolver(org.xml.sax.EntityResolver handler)
          Sets a EntityResolver to resolve external entity locations.
 void setErrorHandler(org.xml.sax.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 file)
          validates an XML document.
 boolean verify(org.xml.sax.InputSource source)
          validates an XML document.
 boolean verify(org.w3c.dom.Node node)
          validates an XML document.
 boolean verify(java.lang.String uri)
          validates an XML document.
 

Method Detail

getProperty

java.lang.Object getProperty(java.lang.String property)
                             throws org.xml.sax.SAXNotRecognizedException,
                                    org.xml.sax.SAXNotSupportedException
Gets a property value

This method is modeled after SAX2.

Parameters:
property - property name
Throws:
org.xml.sax.SAXNotRecognizedException
org.xml.sax.SAXNotSupportedException

getVerifierFilter

VerifierFilter getVerifierFilter()
                                 throws org.xml.sax.SAXException
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.

Throws:
org.xml.sax.SAXException

getVerifierHandler

VerifierHandler getVerifierHandler()
                                   throws org.xml.sax.SAXException
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.

Throws:
org.xml.sax.SAXException

isFeature

boolean isFeature(java.lang.String feature)
                  throws org.xml.sax.SAXNotRecognizedException,
                         org.xml.sax.SAXNotSupportedException
Checks whether a feature is supported or not.

This method is modeled after SAX2.

Parameters:
feature - feature name
Throws:
org.xml.sax.SAXNotRecognizedException
org.xml.sax.SAXNotSupportedException

setEntityResolver

void setEntityResolver(org.xml.sax.EntityResolver handler)
Sets a EntityResolver to resolve external entity locations.

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

Parameters:
handler - EntityResolver

setErrorHandler

void setErrorHandler(org.xml.sax.ErrorHandler handler)
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.

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

setFeature

void setFeature(java.lang.String feature,
                boolean value)
                throws org.xml.sax.SAXNotRecognizedException,
                       org.xml.sax.SAXNotSupportedException
Sets a value to a feature.

This method is modeled after SAX2.

Parameters:
feature - feature name
value - feature value
Throws:
org.xml.sax.SAXNotRecognizedException
org.xml.sax.SAXNotSupportedException

setProperty

void setProperty(java.lang.String property,
                 java.lang.Object value)
                 throws org.xml.sax.SAXNotRecognizedException,
                        org.xml.sax.SAXNotSupportedException
Sets a property value

This method is modeled after SAX2.

Parameters:
property - property name
value - property value
Throws:
org.xml.sax.SAXNotRecognizedException
org.xml.sax.SAXNotSupportedException

verify

boolean verify(java.io.File file)
               throws org.xml.sax.SAXException,
                      java.io.IOException
validates an XML document.

Parameters:
file - File to be validated
Returns:
true if the document is valid. false if otherwise.
Throws:
org.xml.sax.SAXException
java.io.IOException

verify

boolean verify(org.xml.sax.InputSource source)
               throws org.xml.sax.SAXException,
                      java.io.IOException
validates an XML document.

Parameters:
source - InputSource of a XML document to verify.
Returns:
true if the document is valid. false if otherwise.
Throws:
org.xml.sax.SAXException
java.io.IOException

verify

boolean verify(org.w3c.dom.Node node)
               throws org.xml.sax.SAXException
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.

Parameters:
node - the root DOM node of an XML document.
Returns:
true if the document is valid. false if otherwise.
Throws:
java.lang.UnsupportedOperationException - If the node type of the node parameter is something which this implementation does not support.
org.xml.sax.SAXException

verify

boolean verify(java.lang.String uri)
               throws org.xml.sax.SAXException,
                      java.io.IOException
validates an XML document.

Parameters:
uri - URI of a document.
Returns:
true if the document is valid. false if otherwise.
Throws:
org.xml.sax.SAXException
java.io.IOException