net.sf.saxon.type
Class ValidationFailure

java.lang.Object
  net.sf.saxon.type.ValidationFailure

All Implemented Interfaces:

SourceLocator, ConversionResult, Locator

public class ValidationFailure
extends Object
implements SourceLocator, Locator, ConversionResult

This exception indicates a failure when validating an instance against a type defined in a schema.

This class holds the same information as a ValidationException, except that it is not an exception, and does not carry system overheads such as a stack trace. It is used because operations such as "castable", and validation of values in a union, cause validation failures on a success path and it is costly to throw, or even to create, exception objects on a success path.

Constructor Summary

ValidationFailure(Exception exception)
Creates a new ValidationFailure with the given nested exception.

ValidationFailure(String message)
Creates a new ValidationException with the given message.

Method Summary

AtomicValue	asAtomic() Calling this method on a ConversionResult returns the AtomicValue that results from the conversion if the conversion was successful, and throws a ValidationException explaining the conversion error otherwise.
int	getColumnNumber()
String	getConstraintClauseNumber() Get the constraint clause number
String	getConstraintName() Get the constraint name
String	getConstraintReference() Get the constraint name and clause in the format defined in XML Schema Part C (Outcome Tabulations).
String	getConstraintReferenceMessage() Get the constraint reference as a string for inserting into an error message.
int	getConstraintSchemaPart() Get the "schema part" component of the constraint reference
String	getErrorCode()
int	getLineNumber()
SourceLocator	getLocator()
String	getMessage()
String	getPublicId()
String	getSystemId()
ValidationException	makeException()
void	setColumnNumber(int column)
void	setConstraintReference(int schemaPart, String constraintName, String clause) Set a reference to the constraint in XML Schema that is not satisfied
void	setConstraintReference(ValidationFailure e) Copy the constraint reference from another exception object
void	setErrorCode(String errorCode)
void	setLineNumber(int line)
void	setLocator(SourceLocator locator)
void	setPublicId(String id)
void	setSourceLocator(SourceLocator locator)
void	setSystemId(String id)
String	toString() Returns the String representation of this Exception

Methods inherited from class java.lang.Object

equals, getClass, hashCode, notify, notifyAll, wait, wait, wait

Constructor Detail

ValidationFailure

public ValidationFailure(String message)

Creates a new ValidationException with the given message.

Parameters:

message - the message for this Exception

ValidationFailure

public ValidationFailure(Exception exception)

Creates a new ValidationFailure with the given nested exception.

Parameters:

exception - the nested exception

Method Detail

setConstraintReference

public void setConstraintReference(int schemaPart,
                                   String constraintName,
                                   String clause)

Set a reference to the constraint in XML Schema that is not satisfied

Parameters:

schemaPart - - 1 or 2, depending whether the constraint is in XMLSchema part 1 or part 2

constraintName - - the short name of the constraint in XMLSchema, as a fragment identifier in the HTML of the XML Schema Part 1 specification

clause - - the clause number within the description of that constraint

setConstraintReference

public void setConstraintReference(ValidationFailure e)

Copy the constraint reference from another exception object

Parameters:

e - the other exception object from which to copy the information

getConstraintReferenceMessage

public String getConstraintReferenceMessage()

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

getConstraintSchemaPart

public int getConstraintSchemaPart()

Get the "schema part" component of the constraint reference

Returns:

1 or 2 depending on whether the violated constraint is in XML Schema Part 1 or Part 2; or -1 if there is no constraint reference

getConstraintName

public String getConstraintName()

Get the constraint name

Returns:

the name of the violated constraint, in the form of a fragment identifier within the published XML Schema specification; or null if the information is not available.

getConstraintClauseNumber

public String getConstraintClauseNumber()

Get the constraint clause number

Returns:

the section number of the clause containing the constraint that has been violated. Generally a decimal number in the form n.n.n; possibly a sequence of such numbers separated by semicolons. Or null if the information is not available.

getConstraintReference

public String getConstraintReference()

Get the constraint name and clause in the format defined in XML Schema Part C (Outcome Tabulations). This mandates the format validation-rule-name.clause-number

Returns:

the constraint reference, for example "cos-ct-extends.1.2"; or null if the reference is not known.

getMessage

public String getMessage()

toString

public String toString()

Returns the String representation of this Exception

Overrides:

toString in class Object

Returns:

the String representation of this Exception

getPublicId

public String getPublicId()

Specified by:

getPublicId in interface SourceLocator

Specified by:

getPublicId in interface Locator

getSystemId

public String getSystemId()

Specified by:

getSystemId in interface SourceLocator

Specified by:

getSystemId in interface Locator

getLineNumber

public int getLineNumber()

Specified by:

getLineNumber in interface SourceLocator

Specified by:

getLineNumber in interface Locator

getColumnNumber

public int getColumnNumber()

Specified by:

getColumnNumber in interface SourceLocator

Specified by:

getColumnNumber in interface Locator

setPublicId

public void setPublicId(String id)

setSystemId

public void setSystemId(String id)

setLineNumber

public void setLineNumber(int line)

setColumnNumber

public void setColumnNumber(int column)

setLocator

public void setLocator(SourceLocator locator)

setSourceLocator

public void setSourceLocator(SourceLocator locator)

getLocator

public SourceLocator getLocator()

setErrorCode

public void setErrorCode(String errorCode)

getErrorCode

public String getErrorCode()

makeException

public ValidationException makeException()

asAtomic

public AtomicValue asAtomic()
                     throws ValidationException

Calling this method on a ConversionResult returns the AtomicValue that results from the conversion if the conversion was successful, and throws a ValidationException explaining the conversion error otherwise.

Use this method if you are calling a conversion method that returns a ConversionResult, and if you want to throw an exception if the conversion fails.

Specified by:

asAtomic in interface ConversionResult

Returns:

the atomic value that results from the conversion if the conversion was successful

Throws:

ValidationException - if the conversion was not successful