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, UnicodeString 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
UnicodeString	getLexicalForm() Returns the lexical form of the value
AtomicSequence	getValue() Gets the value of the constraint as a typed value.
ValueConstraint.Variety	getVariety() Get the variety of the constraint (fixed or default)
boolean	matches(AtomicSequence supplied) Test whether a suplied value matches the constraint
void	serialize(SchemaModelSerializer serializer) Serialize the value constraint
boolean	testFixedValue(Configuration config, UnicodeString 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,
                       UnicodeString 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. The lexical form may be null, in which case setValue(net.sf.saxon.om.AtomicSequence) must be called to supply the typed value

Method Detail

getVariety

public ValueConstraint.Variety getVariety()

Get the variety of the constraint (fixed or default)

Returns:

the variety

getLexicalForm

public UnicodeString 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 of the constraint 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

matches

public boolean matches(AtomicSequence supplied)

Test whether a suplied value matches the constraint

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,
                              UnicodeString 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