| net.sf.saxon.type.ItemType
All known Subclasses: net.sf.saxon.pattern.NodeTest, net.sf.saxon.type.AnyItemType,
| ItemType | | public interface ItemType extends Serializable(Code) | | ItemType is an interface that allows testing of whether an Item conforms to an
expected type. ItemType represents the types in the type hierarchy in the XPath model,
as distinct from the schema model: an item type is either item() (matches everything),
a node type (matches nodes), an atomic type (matches atomic values), or empty()
(matches nothing). Atomic types, represented by the class AtomicType, are also
instances of SimpleType in the schema type heirarchy. Node Types, represented by
the class NodeTest, are also Patterns as used in XSLT.
See Also: net.sf.saxon.type.AtomicType
See Also: net.sf.saxon.pattern.NodeTest |
| getAtomizedItemType | | public AtomicType getAtomizedItemType()(Code) | | Get the item type of the atomic values that will be produced when an item
of this type is atomized
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| getPrimitiveItemType | | public ItemType getPrimitiveItemType()(Code) | | Get the primitive item type corresponding to this item type. For item(),
this is Type.ITEM. For node(), it is Type.NODE. For specific node kinds,
it is the value representing the node kind, for example Type.ELEMENT.
For anyAtomicValue it is Type.ATOMIC_VALUE. For numeric it is Type.NUMBER.
For other atomic types it is the primitive type as defined in XML Schema,
except that INTEGER is considered to be a primitive type.
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| getPrimitiveType | | public int getPrimitiveType()(Code) | | Get the primitive type corresponding to this item type. For item(),
this is Type.ITEM. For node(), it is Type.NODE. For specific node kinds,
it is the value representing the node kind, for example Type.ELEMENT.
For anyAtomicValue it is Type.ATOMIC_VALUE. For numeric it is Type.NUMBER.
For other atomic types it is the primitive type as defined in XML Schema,
except that INTEGER is considered to be a primitive type.
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| getSuperType | | public ItemType getSuperType(TypeHierarchy th)(Code) | | Get the type from which this item type is derived by restriction. This
is the supertype in the XPath type heirarchy, as distinct from the Schema
base type: this means that the supertype of xs:boolean is xdt:anyAtomicType,
whose supertype is item() (rather than xs:anySimpleType).
In fact the concept of "supertype" is not really well-defined, because the types
form a lattice rather than a hierarchy. The only real requirement on this function
is that it returns a type that strictly subsumes this type, ideally as narrowly
as possible.
the supertype, or null if this type is item()
Parameters:
th - |
| isAtomicType | | public boolean isAtomicType()(Code) | | Determine whether this item type is atomic (that is, whether it can ONLY match
atomic values)
true if this is ANY_ATOMIC_TYPE or a subtype thereof |
| matchesItem | | public boolean matchesItem(Item item, XPathContext context)(Code) | | Test whether a given item conforms to this type
Parameters:
item - The item to be tested
Parameters:
context - true if the item is an instance of this type; false otherwise |
| toString | | public String toString(NamePool pool)(Code) | | Produce a representation of this type name for use in error messages.
Where this is a QName, it will use conventional prefixes
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