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.
* @since 1.5, DOM Level 3
*/
public interface TypeInfo {
/**
* The name of a type declared for the associated element or attribute,
* or null if unknown.
*/
public String getTypeName();
/**
* 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.
*/
public String getTypeNamespace();
// DerivationMethods
/**
* 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.
*
The reference type definition is derived by restriction from the
* other type definition if the other type definition is the same as the
* reference type definition, or if the other type definition can be
* reached recursively following the {base type definition} property
* from the reference type definition, and all the derivation methods involved are restriction.
*/
public static final int DERIVATION_RESTRICTION = 0x00000001;
/**
* If the document's schema is an XML Schema [XML Schema Part 1]
* , this constant represents the derivation by
* extension.
*
The reference type definition is derived by extension from the
* other type definition if the other type definition can be reached
* recursively following the {base type definition} property from the
* reference type definition, and at least one of the derivation methods involved is an extension.
*/
public static final int DERIVATION_EXTENSION = 0x00000002;
/**
* If the document's schema is an XML Schema [XML Schema Part 1]
* , this constant represents the
* union if simple types are involved.
*
The reference type definition is derived by union from the other
* type definition if there exists two type definitions T1 and T2 such
* as the reference type definition is derived from T1 by
* 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.
*/
public static final int DERIVATION_UNION = 0x00000004;
/**
* If the document's schema is an XML Schema [XML Schema Part 1]
* , this constant represents the list.
*
The reference type definition is derived by list from the other
* type definition if there exists two type definitions T1 and T2 such
* as the reference type definition is derived from T1 by
* 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.
*/
public static final int DERIVATION_LIST = 0x00000008;
/**
* This method returns if there is a derivation between the reference
* type definition, i.e. the TypeInfo on which the method
* is being called, and the other type definition, i.e. the one passed
* as parameters.
* @param typeNamespaceArg the namespace of the other type definition.
* @param typeNameArg the name of the other type definition.
* @param derivationMethod the type of derivation and conditions applied
* between two types, as described in the list of constants provided
* in this interface.
* @return If the document's schema is a DTD or no schema is associated
* with the document, this method will always return 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.
*/
public boolean isDerivedFrom(String typeNamespaceArg,
String typeNameArg,
int derivationMethod);
}