net.sf.saxon.pattern

Class AnyNodeTest

java.lang.Object

net.sf.saxon.pattern.NodeTest

net.sf.saxon.pattern.AnyNodeTest

All Implemented Interfaces:

Serializable, ItemType

public final class AnyNodeTest
extends NodeTest

NodeTest is an interface that enables a test of whether a node has a particular name and type. An AnyNodeTest matches any node.

Author:

Michael H. Kay

See Also:

Serialized Form

Field Summary

Fields

Modifier and Type	Field and Description
(package private) static AnyNodeTest	instance

Constructor Summary

Constructors

Constructor and Description
AnyNodeTest()

Method Summary

Modifier and Type	Method and Description
double	getDefaultPriority() Determine the default priority of this node test when used on its own as a Pattern
static AnyNodeTest	getInstance() Get an instance of AnyNodeTest
int	getNodeKindMask() Get a mask indicating which kinds of nodes this NodeTest can match.
ItemType	getSuperType(TypeHierarchy th) Get the type from which this item type is derived by restriction.
int	hashCode() Returns a hash code value for the object.
boolean	matches(int nodeType, int fingerprint, int annotation) Test whether this node test is satisfied by a given node
boolean	matches(NodeInfo node) Test whether this node test is satisfied by a given node.
boolean	matches(TinyTree tree, int nodeNr) Test whether this node test is satisfied by a given node on a TinyTree.
boolean	matchesItem(Item item, XPathContext context, boolean allowURIPromotion) Test whether a given item conforms to this type
String	toString()

Methods inherited from class net.sf.saxon.pattern.NodeTest

getAtomizedItemType, getContentType, getFingerprint, getPrimitiveItemType, getPrimitiveType, getRequiredNodeNames, isAtomicType, toString

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, notify, notifyAll, wait, wait, wait

Field Detail

instance

static AnyNodeTest instance

Constructor Detail

AnyNodeTest

public AnyNodeTest()

Method Detail

getInstance

public static AnyNodeTest getInstance()

Get an instance of AnyNodeTest

matchesItem

public boolean matchesItem(Item item,
                           XPathContext context,
                           boolean allowURIPromotion)

Test whether a given item conforms to this type

Specified by:

matchesItem in interface ItemType

Overrides:

matchesItem in class NodeTest

Parameters:

item - The item to be tested

context -

allowURIPromotion -

Returns:

true if the item is an instance of this type; false otherwise

getSuperType

public ItemType getSuperType(TypeHierarchy th)

Description copied from class: NodeTest

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.

Specified by:

getSuperType in interface ItemType

Overrides:

getSuperType in class NodeTest

Returns:

the supertype, or null if this type is item()

matches

public final boolean matches(int nodeType,
                             int fingerprint,
                             int annotation)

Test whether this node test is satisfied by a given node

Specified by:

matches in class NodeTest

Parameters:

nodeType - The type of node to be matched

fingerprint - identifies the expanded name of the node to be matched

annotation - The actual content type of the node

matches

public boolean matches(TinyTree tree,
                       int nodeNr)

Test whether this node test is satisfied by a given node on a TinyTree. The node must be a document, element, text, comment, or processing instruction node. This method is provided so that when navigating a TinyTree a node can be rejected without actually instantiating a NodeInfo object.

Specified by:

matches in class NodeTest

Parameters:

tree - the TinyTree containing the node

nodeNr - the number of the node within the TinyTree

Returns:

true if the node matches the NodeTest, otherwise false

matches

public boolean matches(NodeInfo node)

Test whether this node test is satisfied by a given node. This alternative method is used in the case of nodes where calculating the fingerprint is expensive, for example DOM or JDOM nodes.

Specified by:

matches in class NodeTest

Parameters:

node - the node to be matched

getDefaultPriority

public final double getDefaultPriority()

Determine the default priority of this node test when used on its own as a Pattern

Specified by:

getDefaultPriority in class NodeTest

getNodeKindMask

public int getNodeKindMask()

Get a mask indicating which kinds of nodes this NodeTest can match. This is a combination of bits: 1<

Specified by:

getNodeKindMask in class NodeTest

toString

public String toString()

Overrides:

toString in class Object

hashCode

public int hashCode()

Returns a hash code value for the object.

Overrides:

hashCode in class Object