edu.upenn.cis.ptb.xpath
Class ImmediatelyPrecedingFunction

java.lang.Object
  edu.upenn.cis.ptb.xpath.ImmediatelyPrecedingFunction

All Implemented Interfaces:

org.jaxen.Function

public class ImmediatelyPrecedingFunction

extends java.lang.Object

implements org.jaxen.Function

Functional definition of the Immediately Preceding Axis in LPath. This function has the signature:

  node-set i-prec(node-set, string)
 

The second argument is a string which should be a valid XPath expression. This expression will be run against each node in the immediately preceding axis (see LPath Bird et al) of nodes in the nodset. The immediately preceding axis starts from the first node of the preceding axis (say x), and includes all nodes on the path from x to its first leaf.

  i-prec(=>>::NP,'=::VB')
 

Select VB nodes which immediately precede an NP node. See the PTBXPath class for how to write recursive expressions.

Author:

nikhild

See Also:

PTBXPath

Constructor Summary

ImmediatelyPrecedingFunction()
Creates a new instance of SubtreeScoping

Method Summary

java.lang.Object

call(org.jaxen.Context context, java.util.List list)

Methods inherited from class java.lang.Object

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

Constructor Detail

ImmediatelyPrecedingFunction

public ImmediatelyPrecedingFunction()

Creates a new instance of SubtreeScoping

Method Detail

call

public java.lang.Object call(org.jaxen.Context context,
                             java.util.List list)
                      throws org.jaxen.FunctionCallException

Specified by:

call in interface org.jaxen.Function

Throws:

org.jaxen.FunctionCallException