net.sf.saxon.pattern

Class NamespaceTest

Implemented Interfaces:
ItemType, Serializable

public final class NamespaceTest
extends NodeTest

NodeTest is an interface that enables a test of whether a node has a particular name and type. A NamespaceTest matches the node type and the namespace URI.
Author:
Michael H. Kay

Constructor Summary

NamespaceTest(NamePool pool, int nodeKind, String uri)

Method Summary

boolean
equals(Object other)
Indicates whether some other object is "equal to" this one.
double
getDefaultPriority()
Determine the default priority of this node test when used on its own as a Pattern
String
getNamespaceURI()
Get the namespace URI matched by this NamespaceTest
int
getNodeKindMask()
Get a mask indicating which kinds of nodes this NodeTest can match.
int
getPrimitiveType()
Determine the types of nodes to which this pattern applies.
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.
String
toString()

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

getAtomizedItemType, getContentType, getDefaultPriority, getFingerprint, getNodeKindMask, getPrimitiveItemType, getPrimitiveType, getRequiredNodeNames, getSuperType, isAtomicType, isNillable, matches, matches, matches, matchesItem, toString

Constructor Details

NamespaceTest

public NamespaceTest(NamePool pool,
                     int nodeKind,
                     String uri)

Method Details

equals

public boolean equals(Object other)
Indicates whether some other object is "equal to" this one.

getDefaultPriority

public final double getDefaultPriority()
Determine the default priority of this node test when used on its own as a Pattern
Overrides:
getDefaultPriority in interface NodeTest

getNamespaceURI

public String getNamespaceURI()
Get the namespace URI matched by this NamespaceTest
Returns:
the namespace URI matched by this NamespaceTest

getNodeKindMask

public int getNodeKindMask()
Get a mask indicating which kinds of nodes this NodeTest can match. This is a combination of bits: 1<<Type.ELEMENT for element nodes, 1<<Type.TEXT for text nodes, and so on.
Overrides:
getNodeKindMask in interface NodeTest

getPrimitiveType

public int getPrimitiveType()
Determine the types of nodes to which this pattern applies. Used for optimisation. For patterns that match nodes of several types, return Type.NODE
Specified by:
getPrimitiveType in interface ItemType
Overrides:
getPrimitiveType in interface NodeTest
Returns:
the type of node matched by this pattern. e.g. Type.ELEMENT or Type.TEXT

getSuperType

public ItemType getSuperType(TypeHierarchy th)
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 xs: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 interface NodeTest
Parameters:
th - the type hierarchy cache
Returns:
the supertype, or null if this type is item()

hashCode

public int hashCode()
Returns a hash code value for the object.

matches

public boolean matches(int nodeType,
                       int fingerprint,
                       int annotation)
Test whether this node test is satisfied by a given node
Overrides:
matches in interface NodeTest
Parameters:
nodeType - The type of node to be matched
fingerprint - identifies the expanded name of the node to be matched

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.
Overrides:
matches in interface NodeTest
Parameters:
node - the node to be matched

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.
Overrides:
matches in interface NodeTest
Parameters:
tree - the TinyTree containing the node
nodeNr - the number of the node within the TinyTree

toString

public String toString()