net.sf.saxon.pattern
Class EmptySequenceTest
- ItemType, Serializable
public final class EmptySequenceTest
NodeTest is an interface that enables a test of whether a node has a particular
name and type. An EmptySequenceTest matches no nodes or atomic values: it corresponds to the
type empty-sequence().
getAtomizedItemType , getContentType , getDefaultPriority , getFingerprint , getNodeKindMask , getPrimitiveItemType , getPrimitiveType , getRequiredNodeNames , getSuperType , isAtomicType , isNillable , matches , matches , matches , matchesItem , toString |
getDefaultPriority
public final double getDefaultPriority()
Determine the default priority of this node test when used on its own as a Pattern
- getDefaultPriority in interface NodeTest
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.
- getNodeKindMask in interface NodeTest
getPrimitiveItemType
public ItemType getPrimitiveItemType()
Get the primitive item type corresponding to this item type. For item(),
this is Type.ITEM. For node(), it is Type.NODE. For specific node kinds,
it is the value representing the node kind, for example Type.ELEMENT.
For anyAtomicValue it is Type.ATOMIC_VALUE. For numeric it is Type.NUMBER.
For other atomic types it is the primitive type as defined in XML Schema,
except that INTEGER is considered to be a primitive type.
- getPrimitiveItemType in interface ItemType
- getPrimitiveItemType in interface NodeTest
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
- matches in interface NodeTest
nodeType
- The type of node to be matchedfingerprint
- 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.
- matches in interface NodeTest
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.
- matches in interface NodeTest
tree
- the TinyTree containing the nodenodeNr
- the number of the node within the TinyTree
- true if the node matches the NodeTest, otherwise false
matchesItem
public boolean matchesItem(Item item,
boolean allowURIPromotion,
Configuration config)
Test whether a given item conforms to this type
- matchesItem in interface ItemType
- matchesItem in interface NodeTest
item
- The item to be testedallowURIPromotion
- config
-
- true if the item is an instance of this type; false otherwise
toString
public String toString()