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: Class EmptyEnumeration
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com.icl.saxon.om
Class EmptyEnumeration


java.lang.Object

  |

  +--com.icl.saxon.om.EmptyEnumeration
All Implemented Interfaces:
AxisEnumeration, LastPositionFinder, NodeEnumeration
public class EmptyEnumeration
extends java.lang.Object
implements AxisEnumeration

EmptyEnumeration: an enumeration of an empty node-set

Constructor Summary
EmptyEnumeration()
           
 
Method Summary
static EmptyEnumeration getInstance()
          Return an instance of an EmptyEnumeration
 int getLastPosition()
          Get the last position
 boolean hasMoreElements()
          Determine whether there are more nodes to come.
 boolean isPeer()
          Determine whether the nodes returned by this enumeration are known to be peers, that is, no node is a descendant or ancestor of another node.
 boolean isReverseSorted()
          Determine whether the nodes returned by this enumeration are known to be in reverse document order.
 boolean isSorted()
          Determine whether the nodes returned by this enumeration are known to be in document order
 NodeInfo nextElement()
          Get the next node in sequence.
 
Methods inherited from class java.lang.Object
clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait
 

Constructor Detail

EmptyEnumeration


public EmptyEnumeration()
Method Detail

getInstance


public static EmptyEnumeration getInstance()
Return an instance of an EmptyEnumeration

hasMoreElements


public boolean hasMoreElements()
Description copied from interface: AxisEnumeration
Determine whether there are more nodes to come.
(Note the term "Element" is used here in the sense of the standard Java Enumeration class, it has nothing to do with XML elements).
Specified by:
hasMoreElements in interface AxisEnumeration
Following copied from interface: com.icl.saxon.om.AxisEnumeration
Returns:
true if there are more nodes

nextElement


public NodeInfo nextElement()
Description copied from interface: AxisEnumeration
Get the next node in sequence.
(Note the term "Element" is used here in the sense of the standard Java Enumeration class, it has nothing to do with XML elements).
Specified by:
nextElement in interface AxisEnumeration
Following copied from interface: com.icl.saxon.om.AxisEnumeration
Returns:
the next NodeInfo

isSorted


public boolean isSorted()
Description copied from interface: NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be in document order
Specified by:
isSorted in interface NodeEnumeration
Following copied from interface: com.icl.saxon.om.NodeEnumeration
Returns:
true if the nodes are guaranteed to be in document order.

isReverseSorted


public boolean isReverseSorted()
Description copied from interface: NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be in reverse document order.
Specified by:
isReverseSorted in interface NodeEnumeration
Following copied from interface: com.icl.saxon.om.NodeEnumeration
Returns:
true if the nodes are guaranteed to be in document order.

isPeer


public boolean isPeer()
Description copied from interface: NodeEnumeration
Determine whether the nodes returned by this enumeration are known to be peers, that is, no node is a descendant or ancestor of another node. This significance of this property is that if a peer enumeration is applied to each node in a set derived from another peer enumeration, and if both enumerations are sorted, then the result is also sorted.
Specified by:
isPeer in interface NodeEnumeration

getLastPosition


public int getLastPosition()
Description copied from interface: AxisEnumeration
Get the last position
Specified by:
getLastPosition in interface AxisEnumeration
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