net.sf.saxon.lib

Class StandardInvalidityHandler

java.lang.Object

net.sf.saxon.lib.StandardInvalidityHandler

All Implemented Interfaces:

InvalidityHandler

Direct Known Subclasses:

InvalidityReportGenerator

public class StandardInvalidityHandler
extends Object
implements InvalidityHandler

This class StandardInvalidityHandler is the standard error handler for errors found during validation of an instance document against a schema, used if no other InvalidityHandler is nominated. Its effect is to construct a message containing information about the error, and output this message to a nominated Logger.

Constructor Summary

Constructors

Constructor and Description
StandardInvalidityHandler(Configuration config) Create a Standard Invalidity Handler

Method Summary

Methods

Modifier and Type	Method and Description
static String	abbreviatePath(String uri) Abbreviate a URI (if requested)
Sequence	endReporting() Get the value to be associated with a validation exception.
Configuration	getConfiguration()
static String	getConstraintReferenceMessage(Invalidity err) Get the constraint reference as a string for inserting into an error message.
String	getExpandedMessage(Invalidity err) Get a string containing the message for this exception and all contained exceptions
String	getLocationMessage(Invalidity err) Get a string identifying the location of an error.
Logger	getLogger() Get the error output stream
void	reportInvalidity(Invalidity failure) Receive notification of a validity error.
void	setLogger(Logger logger) Set output destination for error messages (default is the Logger registered with the Configuration)
void	startReporting(String systemId) At the start of a validation episode, initialize the handler

Methods inherited from class java.lang.Object

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

Constructor Detail

StandardInvalidityHandler

public StandardInvalidityHandler(Configuration config)

Create a Standard Invalidity Handler

Parameters:

config - the Saxon configuration

Method Detail

setLogger

public void setLogger(Logger logger)

Set output destination for error messages (default is the Logger registered with the Configuration)

Parameters:

logger - The Logger to use for error messages

getLogger

public Logger getLogger()

Get the error output stream

Returns:

the error output stream

getConfiguration

public Configuration getConfiguration()

startReporting

public void startReporting(String systemId)
                    throws XPathException

At the start of a validation episode, initialize the handler

Specified by:

startReporting in interface InvalidityHandler

Parameters:

systemId - optional; may be used to represent the destination of any report produced

Throws:

XPathException - if initialization of the invalidity handler fails for any reason

reportInvalidity

public void reportInvalidity(Invalidity failure)
                      throws XPathException

Receive notification of a validity error.

Specified by:

reportInvalidity in interface InvalidityHandler

Parameters:

failure - Information about the nature of the invalidity

Throws:

XPathException - - if the validation error cannot be reported. This is fatal and will cause the validation run to be abandoned

getLocationMessage

public String getLocationMessage(Invalidity err)

Get a string identifying the location of an error.

Parameters:

err - the exception containing the location information

Returns:

a message string describing the location

abbreviatePath

public static String abbreviatePath(String uri)

Abbreviate a URI (if requested)

Parameters:

uri - the URI to be abbreviated

Returns:

the abbreviated URI, unless full path names were requested, in which case the URI as supplied

getExpandedMessage

public String getExpandedMessage(Invalidity err)

Get a string containing the message for this exception and all contained exceptions

Parameters:

err - the exception containing the required information

Returns:

a message that concatenates the message of this exception with its contained exceptions, also including information about the error code and location.

getConstraintReferenceMessage

public static String getConstraintReferenceMessage(Invalidity err)

Get the constraint reference as a string for inserting into an error message.

Returns:

the reference as a message, or null if no information is available

endReporting

public Sequence endReporting()
                      throws XPathException

Get the value to be associated with a validation exception. May return null. In the case of the InvalidityReportGenerator, this returns the XML document containing the validation report

Specified by:

endReporting in interface InvalidityHandler

Returns:

a value (or null). This will be the value returned as the value of the variable $err:value during try/catch processing

Throws:

XPathException - if an error occurs creating any validation report