public interface TypeInfo
TypeInfo
interface represents a type referenced from
Element
or Attr
nodes, specified in the schemas
associated with the document. The type is a pair of a namespace URI and
name properties, and depends on the document's schema.
If the document's schema is an XML DTD [XML 1.0], the values are computed as follows:
Attr
node, typeNamespace
is
"http://www.w3.org/TR/REC-xml"
and typeName
represents the [attribute type] property in the [XML Information Set]
. If there is no declaration for the attribute, typeNamespace
and typeName
are null
.
Element
node, typeNamespace
and typeName
are null
.
If the document's schema is an XML Schema [XML Schema Part 1] , the values are computed as follows using the post-schema-validation infoset contributions (also called PSVI contributions):
null
.
Note: At the time of writing, the XML Schema specification does not require exposing the declared type. Thus, DOM implementations might choose not to provide type information if validity is not valid.
Note: Other schema languages are outside the scope of the W3C
and therefore should define how to represent their type systems using
TypeInfo
.
See also the Document Object Model (DOM) Level 3 Core Specification.
Modifier and Type | Field and Description |
---|---|
static int |
DERIVATION_EXTENSION
If the document's schema is an XML Schema [XML Schema Part 1]
, this constant represents the derivation by
extension.
|
static int |
DERIVATION_LIST
If the document's schema is an XML Schema [XML Schema Part 1]
, this constant represents the list.
|
static int |
DERIVATION_RESTRICTION
If the document's schema is an XML Schema [XML Schema Part 1]
, this constant represents the derivation by
restriction if complex types are involved, or a
restriction if simple types are involved.
|
static int |
DERIVATION_UNION
If the document's schema is an XML Schema [XML Schema Part 1]
, this constant represents the
union if simple types are involved.
|
Modifier and Type | Method and Description |
---|---|
String |
getTypeName()
The name of a type declared for the associated element or attribute,
or
null if unknown. |
String |
getTypeNamespace()
The namespace of the type declared for the associated element or
attribute or
null if the element does not have
declaration or if no namespace information is available. |
boolean |
isDerivedFrom(String typeNamespaceArg,
String typeNameArg,
int derivationMethod)
This method returns if there is a derivation between the reference
type definition, i.e.
|
static final int DERIVATION_RESTRICTION
static final int DERIVATION_EXTENSION
static final int DERIVATION_UNION
DERIVATION_RESTRICTION
or
DERIVATION_EXTENSION
, T2 is derived from the other type
definition by DERIVATION_RESTRICTION
, T1 has {variety} union, and one of the {member type definitions} is T2. Note that T1 could be
the same as the reference type definition, and T2 could be the same
as the other type definition.static final int DERIVATION_LIST
DERIVATION_RESTRICTION
or
DERIVATION_EXTENSION
, T2 is derived from the other type
definition by DERIVATION_RESTRICTION
, T1 has {variety} list, and T2 is the {item type definition}. Note that T1 could be the same as
the reference type definition, and T2 could be the same as the other
type definition.String getTypeName()
null
if unknown.String getTypeNamespace()
null
if the element does not have
declaration or if no namespace information is available.boolean isDerivedFrom(String typeNamespaceArg, String typeNameArg, int derivationMethod)
TypeInfo
on which the method
is being called, and the other type definition, i.e. the one passed
as parameters.typeNamespaceArg
- the namespace of the other type definition.typeNameArg
- the name of the other type definition.derivationMethod
- the type of derivation and conditions applied
between two types, as described in the list of constants provided
in this interface.false
. If the document's schema is an XML Schema, the method will return
true
if the reference type definition is derived from
the other type definition according to the derivation parameter. If
the value of the parameter is 0
(no bit is set to
1
for the derivationMethod
parameter),
the method will return true
if the other type
definition can be reached by recursing any combination of {base
type definition}, {item type definition}, or {member type
definitions} from the reference type definition. Submit a bug or feature
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