com.saxonica.ee.schema

Class ValueConstraint

java.lang.Object

com.saxonica.ee.schema.ValueConstraint

public class ValueConstraint
extends java.lang.Object

A value constraint represents the default or fixed value of an element declaration, attribute declaration, or attribute use

Nested Class Summary

Nested Classes

Modifier and Type	Class and Description
static class	ValueConstraint.Variety

Constructor Summary

Constructors

Constructor and Description
ValueConstraint(ValueConstraint.Variety variety, java.lang.String lexicalForm) Constructor; supplies the lexical form of the value as a string.

Method Summary

Modifier and Type	Method and Description
Sequence<?>	asFunction() For use with the saxon:schema extension function, return the value constraint in the form of a function
java.lang.Comparable	getComparisonKey() Get a comparison key that can be used for comparing values
java.lang.String	getLexicalForm() Returns the lexical form of the value
AtomicSequence	getValue() Gets the value as a typed value.
ValueConstraint.Variety	getVariety() Get the variety of the constraint (fixed or default)
void	serialize(SchemaModelSerializer serializer) Serialize the value constraint
boolean	testFixedValue(Configuration config, java.lang.CharSequence value, SimpleType type, NamespaceResolver resolver) Test that the actual value of an element or attribute conforms to the required fixed value

Methods inherited from class java.lang.Object

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

Constructor Detail

ValueConstraint

public ValueConstraint(ValueConstraint.Variety variety,
                       java.lang.String lexicalForm)

Constructor; supplies the lexical form of the value as a string. The typed value will initially be set to the lexical form as an instance of UntypedAtomic.

Method Detail

getVariety

public ValueConstraint.Variety getVariety()

Get the variety of the constraint (fixed or default)

Returns:

the variety

getLexicalForm

public java.lang.String getLexicalForm()

Returns the lexical form of the value

Returns:

the fixed or default value defined by this component. The value returned is the value after whitespace normalization is applied to the value as written in the source schema.

getValue

public AtomicSequence getValue()

Gets the value as a typed value.

Returns:

the value. This will initially be saved as an UntypedAtomicValue; later, when the type is known, it will be converted to the correct type

getComparisonKey

public java.lang.Comparable getComparisonKey()

Get a comparison key that can be used for comparing values

Returns:

a comparison key

asFunction

public Sequence<?> asFunction()

For use with the saxon:schema extension function, return the value constraint in the form of a function

Returns:

a function whose result gives details of the value constraint

testFixedValue

public boolean testFixedValue(Configuration config,
                              java.lang.CharSequence value,
                              SimpleType type,
                              NamespaceResolver resolver)
                       throws ValidationException

Test that the actual value of an element or attribute conforms to the required fixed value

Parameters:

config - the Saxon configuration

value - the actual value

type - the required type

resolver - a namespace resolver, in case QNames are involved

Returns:

true if the value is OK, otherwise false

Throws:

ValidationException - if the value is not valid as an instance of the type

serialize

public void serialize(SchemaModelSerializer serializer)
               throws XPathException

Serialize the value constraint

Throws:

XPathException