com.saxonica.schema
Class UserUnionType

java.lang.Object
  com.saxonica.schema.SchemaStructure
      com.saxonica.schema.SchemaTypeImpl
          com.saxonica.schema.UserSimpleType
              com.saxonica.schema.UserUnionType

All Implemented Interfaces:

SerializableSchemaComponent, UserSchemaComponent, Serializable, SourceLocator, SchemaComponent, SchemaType, SimpleType

public class UserUnionType
extends UserSimpleType

A class that represents the XML Schema Union simple-type.

See Also:

Serialized Form

Field Summary

Fields inherited from interface net.sf.saxon.type.SchemaType

DERIVATION_EXTENSION, DERIVATION_LIST, DERIVATION_RESTRICTION, DERIVATION_UNION, DERIVE_BY_SUBSTITUTION

Fields inherited from interface net.sf.saxon.type.SchemaComponent

FIXED_UP, INCOMPLETE, INVALID, UNVALIDATED, VALIDATED, VALIDATING

Constructor Summary

UserUnionType(SchemaAwareConfiguration config)
Creates a new Union type.

Method Summary

void	addMemberTypeReference(TypeReference member) Add a member type to the list of member types
AtomicType	getCommonAtomicType() Get the most specific possible atomic type that all items in this SimpleType belong to
List	getMemberTypeReferences() Get the list of member types
SequenceIterator	getTypedValue(CharSequence value, NamespaceResolver resolver, NameChecker nameChecker) Get the typed value corresponding to a given string value, assuming it is valid against this type
boolean	isAtomicType() Test whether this Simple Type is an atomic type
boolean	isBuiltInType() Determine whether this is a built-in type or a user-defined type
boolean	isListType() Determine whether this is a list type
boolean	isNamespaceSensitive() Test whether this type is namespace sensitive, that is, if a namespace context is needed to translate between the lexical space and the value space.
boolean	isUnionType() Return true if this type is a union type (that is, if its variety is union)
Iterator	iterateMemberTypeReferences() Returns an Iterator over all the SimpleTypes that are members of a union type.
void	lookForCycles(Stack references, SchemaCompiler compiler) This method is called to look for cycles.
void	serializeVariety(SchemaModelSerializer serializer) Serialize the schema component
void	setMemberTypeReferences(List members) Set the member types of this union type.
boolean	validate(SchemaCompiler compiler) Validate this Union, replacing all unresolved forwards references at the same time
ValidationFailure	validateContent(CharSequence value, NamespaceResolver nsResolver, NameChecker nameChecker) Check whether a given input string is valid according to this SimpleType

Methods inherited from class com.saxonica.schema.UserSimpleType

addFacet, analyzeContentExpression, applyWhitespaceNormalization, atomize, checkAgainstFacets, checkTypeDerivationIsOK, convertFacetValues, elaborate, getBuiltInBaseType, getFacet, getFacetList, getFacets, getFacets, getLocalFacetList, getTypedValue, getWhitespaceAction, isSimpleType, isTypeDerivationOK, mergeEnumerationFacets, serialize, setFacetList

Methods inherited from class com.saxonica.schema.SchemaTypeImpl

allowsDerivation, containingDeclarationIsElement, getBaseType, getBaseTypeFingerprint, getBaseTypeReference, getBlock, getContainingDeclarationName, getDerivationMethod, getDescription, getDisplayName, getFingerprint, getLocalName, getName, getNameCode, getNamePool, getTargetNamespace, isAnonymousType, isComplexType, isExternalType, isSameType, setBaseTypeReference, setContainingDeclaration, setDerivationMethod, setDerivationMethodName, setFinalProhibitions, setNameCode

Methods inherited from class com.saxonica.schema.SchemaStructure

fixup, getColumnNumber, getConfiguration, getFixupStatus, getLineNumber, getPublicId, getSystemId, getValidationStatus, setConfiguration, setFixupStatus, setLineNumber, setLocator, setSystemId, setValidationStatus

Methods inherited from class java.lang.Object

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

Methods inherited from interface net.sf.saxon.type.SimpleType

isExternalType

Methods inherited from interface net.sf.saxon.type.SchemaType

allowsDerivation, getBaseType, getBlock, getDerivationMethod, getDescription, getDisplayName, getFingerprint, getName, getNameCode, getSystemId, getTargetNamespace, isAnonymousType, isComplexType, isSameType

Methods inherited from interface net.sf.saxon.type.SchemaComponent

getValidationStatus

Methods inherited from interface com.saxonica.schema.UserSchemaComponent

fixup

Constructor Detail

UserUnionType

public UserUnionType(SchemaAwareConfiguration config)

Creates a new Union type.

Parameters:

config - the Configuration for this Union (Cannot be null)

Method Detail

getCommonAtomicType

public AtomicType getCommonAtomicType()

Get the most specific possible atomic type that all items in this SimpleType belong to

Returns:

the lowest common supertype of all member types

setMemberTypeReferences

public void setMemberTypeReferences(List members)

Set the member types of this union type.

Parameters:

members - a list of TypeReference objects

addMemberTypeReference

public void addMemberTypeReference(TypeReference member)

Add a member type to the list of member types

Parameters:

member - a reference to a new member type

getMemberTypeReferences

public List getMemberTypeReferences()

Get the list of member types

Returns:

a List containing TypeReference objects

iterateMemberTypeReferences

public Iterator iterateMemberTypeReferences()

Returns an Iterator over all the SimpleTypes that are members of a union type. Note that this is not transitive: if the union has another union as a membertype, the iteration will return this union rather than its members.

Returns:

For union types, return an Iterator over all TypeReferences to member SimpleTypes.

isAtomicType

public boolean isAtomicType()

Test whether this Simple Type is an atomic type

Specified by:

isAtomicType in interface SchemaType

Specified by:

isAtomicType in interface SimpleType

Overrides:

isAtomicType in class UserSimpleType

Returns:

false, this is not an atomic type

isBuiltInType

public boolean isBuiltInType()

Determine whether this is a built-in type or a user-defined type

Returns:

true if this is a built-in type

isListType

public boolean isListType()

Determine whether this is a list type

Specified by:

isListType in interface SimpleType

Overrides:

isListType in class UserSimpleType

Returns:

true if this is a list type

isUnionType

public boolean isUnionType()

Return true if this type is a union type (that is, if its variety is union)

Specified by:

isUnionType in interface SimpleType

Overrides:

isUnionType in class UserSimpleType

Returns:

true for a union type

isNamespaceSensitive

public boolean isNamespaceSensitive()

Test whether this type is namespace sensitive, that is, if a namespace context is needed to translate between the lexical space and the value space. This is true for types derived from, or containing, QNames and NOTATIONs

Returns:

true if any of the member types is namespace-sensitive

validate

public boolean validate(SchemaCompiler compiler)
                 throws SchemaException

Validate this Union, replacing all unresolved forwards references at the same time

Specified by:

validate in interface UserSchemaComponent

Overrides:

validate in class UserSimpleType

Parameters:

compiler - used for error reporting

Returns:

true when this Schema definition is valid, otherwise false.

Throws:

SchemaException

lookForCycles

public void lookForCycles(Stack references,
                          SchemaCompiler compiler)
                   throws SchemaException,
                          UnresolvedReferenceException

This method is called to look for cycles. The object implementing this method is required (a) to raise an exception if the object itself appears in the list of references, (b) to add itself to the list of references, and (c) to call the lookForCycles method on all the objects that it references.

Specified by:

lookForCycles in interface UserSchemaComponent

Overrides:

lookForCycles in class SchemaStructure

Parameters:

references - A list of objects that contain direct or indirect references to this object, and that must therefore not be referred to from this object.

compiler - used for error reporting

Throws:

SchemaException

UnresolvedReferenceException

validateContent

public ValidationFailure validateContent(CharSequence value,
                                         NamespaceResolver nsResolver,
                                         NameChecker nameChecker)

Check whether a given input string is valid according to this SimpleType

Parameters:

value - the input string to be checked

nsResolver - a namespace resolver used to resolve namespace prefixes if the type is namespace sensitive. The value supplied may be null; in this case any namespace-sensitive content will throw an UnsupportedOperationException.

nameChecker - checks names for conformance to XML 1.0 or XML 1.1 rules

Returns:

null if validation succeeds; return a ValidationFailure describing the validation failure if validation fails

Throws:

UnsupportedOperationException - if the type is namespace-sensitive and no namespace resolver is supplied

getTypedValue

public SequenceIterator getTypedValue(CharSequence value,
                                      NamespaceResolver resolver,
                                      NameChecker nameChecker)
                               throws ValidationException

Description copied from interface: SimpleType

Get the typed value corresponding to a given string value, assuming it is valid against this type

Parameters:

value - the string value

resolver - a namespace resolver used to resolve any namespace prefixes appearing in the content of values. Can supply null, in which case any namespace-sensitive content will be rejected.

nameChecker - a NameChecker used in the case of types that are defined in terms of the XML NCName syntax: this is used to check conformance to XML 1.0 or XML 1.1 naming rules, as appropriate

Returns:

an iterator over the atomic sequence comprising the typed value. The objects returned by this SequenceIterator will all be of type AtomicValue, The next() method on the iterator throws no checked exceptions, although it is not actually declared as an UnfailingIterator.

Throws:

ValidationException - if the supplied value is not in the lexical space of the data type

serializeVariety

public void serializeVariety(SchemaModelSerializer serializer)
                      throws XPathException

Serialize the schema component

Throws:

XPathException