com.novell.xml.xpath
Class AbsoluteLocationPath

java.lang.Object
  com.novell.xml.xpath.NodeSetExpr
      com.novell.xml.xpath.AbsoluteLocationPath

All Implemented Interfaces:

Expression

public class AbsoluteLocationPath

extends NodeSetExpr

implements Expression

Class representing an XPath AbsoluteExpressionPath. An AbsoluteExpressionPath is composed of a root selector '/' and an optional RelativeLocationPath.

See Also:

RelativeLocationPath

Constructor Summary

AbsoluteLocationPath()
Construct an AbsoluteLocationPath with no RelativeLocationPath (i.e., just '/')

AbsoluteLocationPath(RelativeLocationPath rlp)
Construct an AbsoluteLocationPath with a RelativeLocationPath (i.e., '/' followed by a RelativeLocationPath)

Method Summary

ExpressionValue	evaluate(Node contextNode, ExpressionContext context) Evaluate this RelativeLocationPath with respect to a context node and expression context.
void	registerForReset(XPathResetRegistrar registrar) Register this expression or any subexpression that implements XPathResetCache with an object that wants to call resetCache()
String	toString() Provide a readable description for debugging.

Methods inherited from class com.novell.xml.xpath.NodeSetExpr

dump, getResultType, isConstant

Methods inherited from class java.lang.Object

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

Methods inherited from interface com.novell.xml.xpath.Expression

dump, getResultType, isConstant

Constructor Detail

AbsoluteLocationPath

public AbsoluteLocationPath()

Construct an AbsoluteLocationPath with no RelativeLocationPath (i.e., just '/')

AbsoluteLocationPath

public AbsoluteLocationPath(RelativeLocationPath rlp)

Construct an AbsoluteLocationPath with a RelativeLocationPath (i.e., '/' followed by a RelativeLocationPath)

Parameters:

rlp - The RelativeLocationPath

Method Detail

toString

public String toString()

Provide a readable description for debugging.

Returns:

String representation

evaluate

public ExpressionValue evaluate(Node contextNode,
                                ExpressionContext context)
                         throws XPathEvaluationException

Evaluate this RelativeLocationPath with respect to a context node and expression context. The result is always a NodeSet

Specified by:

evaluate in interface Expression

Parameters:

contextNode - The context node

context - The expression context

Returns:

The resulting NodeSet (may be empty, will never be null)

Throws:

XPathEvaluationException

registerForReset

public void registerForReset(XPathResetRegistrar registrar)

Register this expression or any subexpression that implements XPathResetCache with an object that wants to call resetCache()

Specified by:

registerForReset in interface Expression

Overrides:

registerForReset in class NodeSetExpr