net.sf.saxon.pattern

Class UniversalPattern

java.lang.Object

net.sf.saxon.pattern.Pattern

net.sf.saxon.pattern.UniversalPattern

All Implemented Interfaces:

SourceLocator, Container, PatternFinder

public class UniversalPattern
extends Pattern

The UniversalPattern matches everything

Author:

Michael H. Kay

Method Summary

Methods

Modifier and Type	Method and Description
boolean	equals(Object other) Determine whether this pattern is the same as another pattern
int	getFingerprint() Determine the name fingerprint of nodes to which this pattern applies.
static UniversalPattern	getInstance()
ItemType	getItemType() Get a NodeTest that all the nodes matching this pattern must satisfy
int	hashCode() Hashcode supporting equals()
boolean	matches(Item item, XPathContext context) Determine whether this Pattern matches the given Node.
String	toString() Display the pattern for diagnostics

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

allocateSlots, analyze, bindCurrent, convertToTypedPattern, getColumnNumber, getConfiguration, getContainerGranularity, getDefaultPriority, getDependencies, getHostLanguage, getLineNumber, getLocationProvider, getNodeKind, getNodeKindMask, getPackageData, getPublicId, getSystemId, isMotionless, iterateSubExpressions, make, matchesBeneathAnchor, promote, replaceCurrent, replaceSubExpression, selectNodes, setLineNumber, setOriginalText, setPackageData, setPriority, setSystemId, simplify

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static UniversalPattern getInstance()

matches

public boolean matches(Item item,
              XPathContext context)

Determine whether this Pattern matches the given Node. This is the main external interface for matching patterns: it sets current() to the node being tested

Specified by:

matches in class Pattern

Parameters:

item - The item to be tested against the Pattern

context - The context in which the match is to take place.

Returns:

true if the item matches the Pattern, false otherwise

getItemType

public ItemType getItemType()

Get a NodeTest that all the nodes matching this pattern must satisfy

Specified by:

getItemType in class Pattern

Returns:

an ItemType, as specific as possible, which all the matching items satisfy

getFingerprint

public int getFingerprint()

Determine the name fingerprint of nodes to which this pattern applies. Used for optimisation.

Overrides:

getFingerprint in class Pattern

Returns:

A fingerprint that the nodes must match, or -1 if it can match multiple fingerprints

toString

public String toString()

Display the pattern for diagnostics

Overrides:

toString in class Pattern

equals

public boolean equals(Object other)

Determine whether this pattern is the same as another pattern

Overrides:

equals in class Object

Parameters:

other - the other object

hashCode

public int hashCode()

Hashcode supporting equals()

Overrides:

hashCode in class Object