net.sf.saxon.pattern
Class NoNodeTest

java.lang.Object
  |
  +--net.sf.saxon.pattern.Pattern
        |
        +--net.sf.saxon.pattern.NodeTest
              |
              +--net.sf.saxon.pattern.NoNodeTest

All Implemented Interfaces:

ItemType, java.io.Serializable

public final class NoNodeTest

extends NodeTest

NodeTest is an interface that enables a test of whether a node has a particular name and type. A NoNodeTest matches no nodes.

See Also:

Serialized Form

Field Summary

 

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

originalText

 

Constructor Summary

NoNodeTest()

 

Method Summary
boolean	allowsTextNodes()           Indicate whether this NodeTest is capable of matching text nodes
double	getDefaultPriority()           Determine the default priority of this node test when used on its own as a Pattern
static NoNodeTest	getInstance()           Get a NoNodeTest instance
int	getNodeKind()           Determine the types of nodes to which this pattern applies.
boolean	matches(int nodeType, int fingerprint, int annotation)           Test whether this node test is satisfied by a given node
boolean	matchesItem(Item item)           Test whether a given item conforms to this type
java.lang.String	toString()           Produce a representation of this type name for use in error messages.

 

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

getAtomizedItemType, getNodeTest, getPrimitiveType, getSuperType, isSameType, matches

 

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

getFingerprint, getLineNumber, getSystemId, internalMatches, make, setLineNumber, setOriginalText, setSystemId, simplify, typeCheck

 

Methods inherited from class java.lang.Object

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

 

Constructor Detail

NoNodeTest

public NoNodeTest()

getInstance

public static NoNodeTest getInstance()

Get a NoNodeTest instance

getNodeKind

public final int getNodeKind()

Description copied from class: Pattern

Determine the types of nodes to which this pattern applies. Used for optimisation. For patterns that match nodes of several types, return Type.NODE

Overrides:

getNodeKind in class Pattern

Returns:

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

matchesItem

public boolean matchesItem(Item item)

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

Returns:

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

matches

public 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

getDefaultPriority

public final double getDefaultPriority()

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

Overrides:

getDefaultPriority in class Pattern

allowsTextNodes

public boolean allowsTextNodes()

Indicate whether this NodeTest is capable of matching text nodes

Specified by:

allowsTextNodes in class NodeTest

toString

public java.lang.String toString()

Description copied from interface: ItemType

Produce a representation of this type name for use in error messages. Where this is a QName, it will use conventional prefixes

Specified by:

toString in interface ItemType

Overrides:

toString in class Pattern