net.sf.saxon.pattern

Class NameTest

java.lang.Object

net.sf.saxon.pattern.NodeTest

net.sf.saxon.pattern.NameTest

All Implemented Interfaces:

QNameTest, ItemType

public class NameTest
extends NodeTest
implements QNameTest

NodeTest is an interface that enables a test of whether a node has a particular name and type. A NameTest matches the node kind and the namespace URI and the local name. Note that unlike the XPath production called NameTest, this is a test for a specific name, and does not include wildcard matches.

Author:

Michael H. Kay

Constructor Summary

Constructors

Constructor and Description
NameTest(int nodeKind, int nameCode, NamePool namePool) Create a NameTest to match nodes by their nameCode allocated from the NamePool
NameTest(int nodeKind, NodeName name, NamePool pool) Create a NameTest to match nodes by name
NameTest(int nodeKind, String uri, String localName, NamePool namePool) Create a NameTest to match nodes by name

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object other) Determines whether two NameTests are equal
double	getDefaultPriority() Determine the default priority of this node test when used on its own as a Pattern
int	getFingerprint() Get the fingerprint required
String	getLocalPart() Get the local name matched by this nametest
StructuredQName	getMatchingNodeName() Get the name of the nodes matched by this nodetest, if it matches a specific name.
NamePool	getNamePool() Get the NamePool associated with this NameTest
String	getNamespaceURI() Get the namespace URI matched by this nametest
int	getNodeKind() Get the node kind that this name test matches
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.
IntSet	getRequiredNodeNames() Get the set of node names allowed by this NodeTest.
UType	getUType() Get the corresponding UType.
int	hashCode() Returns a hash code value for the object.
boolean	matches(int nodeKind, NodeName name, SchemaType annotation) Test whether this node test is satisfied by a given node.
boolean	matches(StructuredQName qname) Test whether the NameTest matches a given QName
boolean	matches(TinyTree tree, int nodeNr) Test whether this node test is satisfied by a given node on a TinyTree.
boolean	matchesNode(NodeInfo node) Test whether this node test is satisfied by a given node.
String	toString()

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

copy, export, getAtomizedItemType, getContentType, getPrimitiveItemType, isAtomicType, isAtomizable, isNillable, isPlainType, matches, visitNamedSchemaComponents

Methods inherited from class java.lang.Object

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

Constructor Detail

NameTest

public NameTest(int nodeKind,
        String uri,
        String localName,
        NamePool namePool)

Create a NameTest to match nodes by name

Parameters:

nodeKind - the kind of node, for example Type.ELEMENT

uri - the namespace URI of the required nodes. Supply "" to match nodes that are in no namespace

localName - the local name of the required nodes. Supply "" to match unnamed nodes

namePool - the namePool holding the name codes

Since:

9.0

NameTest

public NameTest(int nodeKind,
        int nameCode,
        NamePool namePool)

Create a NameTest to match nodes by their nameCode allocated from the NamePool

Parameters:

nodeKind - the kind of node, for example Type.ELEMENT

nameCode - the nameCode representing the name of the node

namePool - the namePool holding the name codes

Since:

8.4

NameTest

public NameTest(int nodeKind,
        NodeName name,
        NamePool pool)

Create a NameTest to match nodes by name

Parameters:

nodeKind - the kind of node, for example Type.ELEMENT

name - the name of the nodes that this NameTest will match

pool - the namePool holding the name codes

Since:

9.4

Method Detail

getNamePool

public NamePool getNamePool()

Get the NamePool associated with this NameTest

Returns:

the NamePool

getNodeKind

public int getNodeKind()

Get the node kind that this name test matches

Returns:

the matching node kind

getUType

public UType getUType()

Get the corresponding UType. A UType is a union of primitive item types.

Specified by:

getUType in interface ItemType

Returns:

the smallest UType that subsumes this item type

matches

public boolean matches(int nodeKind,
              NodeName name,
              SchemaType annotation)

Test whether this node test is satisfied by a given node. This method is only fully supported for a subset of NodeTests, because it doesn't provide all the information needed to evaluate all node tests. In particular (a) it can't be used to evaluate a node test of the form element(N,T) or schema-element(E) where it is necessary to know whether the node is nilled, and (b) it can't be used to evaluate a node test of the form document-node(element(X)). This in practice means that it is used (a) to evaluate the simple node tests found in the XPath 1.0 subset used in XML Schema, and (b) to evaluate node tests where the node kind is known to be an attribute.

Specified by:

matches in class NodeTest

Parameters:

nodeKind - The kind of node to be matched

name - identifies the expanded name of the node to be matched. The value should be null for a node with no name.

annotation - The actual content type of the node

Returns:

true if the node matches this node test

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 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

matchesNode

public boolean matchesNode(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:

matchesNode in class NodeTest

Parameters:

node - the node to be matched

Returns:

true if the node test is satisfied by the supplied node, false otherwise

matches

public boolean matches(StructuredQName qname)

Test whether the NameTest matches a given QName

Specified by:

matches in interface QNameTest

Parameters:

qname - the QName to be matched

Returns:

true if the name matches

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

Returns:

the default priority for the pattern

getFingerprint

public int getFingerprint()

Get the fingerprint required

Overrides:

getFingerprint in class NodeTest

getMatchingNodeName

public StructuredQName getMatchingNodeName()

Get the name of the nodes matched by this nodetest, if it matches a specific name. Return null if the node test matches nodes of more than one name

Overrides:

getMatchingNodeName in class 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 class NodeTest

Returns:

the type of node matched by this pattern. e.g. Type.ELEMENT or Type.TEXT

getNodeKindMask

public int getNodeKindMask()

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

Overrides:

getNodeKindMask in class NodeTest

Returns:

a combination of bits: 1<

getRequiredNodeNames

public IntSet getRequiredNodeNames()

Get the set of node names allowed by this NodeTest. This is returned as a set of Integer fingerprints. A null value indicates that all names are permitted (i.e. that there are no constraints on the node name. The default implementation returns null.

Overrides:

getRequiredNodeNames in class NodeTest

Returns:

the set of integer fingerprints of the node names that this node test can match.

getNamespaceURI

public String getNamespaceURI()

Get the namespace URI matched by this nametest

Returns:

the namespace URI (using "" for the "null namepace")

getLocalPart

public String getLocalPart()

Get the local name matched by this nametest

Returns:

the local name

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

equals

public boolean equals(Object other)

Determines whether two NameTests are equal

Overrides:

equals in class Object