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org.apache.commons.jxpath.ri.compiler
Class VariableReference  

java.lang.Object
  org.apache.commons.jxpath.ri.compiler.Expression
      org.apache.commons.jxpath.ri.compiler.VariableReference

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public class VariableReference

extends Expression

An element of the compile tree holding a variable reference.

Version:

$Revision: 1.9 $ $Date: 2004/02/29 14:17:38 $

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Nested Class Summary

 

Nested classes inherited from class org.apache.commons.jxpath.ri.compiler.Expression

Expression.PointerIterator, Expression.ValueIterator

 

Field Summary
private  org.apache.commons.jxpath.ri.QName	varName

 

Fields inherited from class org.apache.commons.jxpath.ri.compiler.Expression

NOT_A_NUMBER, ONE, ZERO

 

Constructor Summary

VariableReference(org.apache.commons.jxpath.ri.QName varName)

 

Method Summary
java.lang.Object	compute(org.apache.commons.jxpath.ri.EvalContext context)
boolean	computeContextDependent()           Implemented by subclasses and result is cached by isContextDependent()
java.lang.Object	computeValue(org.apache.commons.jxpath.ri.EvalContext context)           Returns the value of the variable.
org.apache.commons.jxpath.ri.QName	getVariableName()
boolean	isContextDependent()           Returns true if this expression should be re-evaluated each time the current position in the context changes.
java.lang.String	toString()           Convert this Object to a human-readable String.

 

Methods inherited from class org.apache.commons.jxpath.ri.compiler.Expression

iterate, iteratePointers

 

Methods inherited from class java.lang.Object

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

 

Field Detail

varName

private org.apache.commons.jxpath.ri.QName varName

Constructor Detail

VariableReference

public VariableReference(org.apache.commons.jxpath.ri.QName varName)

Method Detail

getVariableName

public org.apache.commons.jxpath.ri.QName getVariableName()

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toString

public java.lang.String toString()

Description copied from class: java.lang.Object

Convert this Object to a human-readable String. There are no limits placed on how long this String should be or what it should contain. We suggest you make it as intuitive as possible to be able to place it into System.out.println() 55 and such.

It is typical, but not required, to ensure that this method never completes abruptly with a java.lang.RuntimeException.

This method will be called when performing string concatenation with this object. If the result is null, string concatenation will instead use "null".

The default implementation returns getClass().getName() + "@" + Integer.toHexString(hashCode()).

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isContextDependent

public boolean isContextDependent()

Description copied from class: Expression

Returns true if this expression should be re-evaluated each time the current position in the context changes.

Overrides:

isContextDependent in class Expression

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computeContextDependent

public boolean computeContextDependent()

Description copied from class: Expression

Implemented by subclasses and result is cached by isContextDependent()

Specified by:

computeContextDependent in class Expression

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compute

public java.lang.Object compute(org.apache.commons.jxpath.ri.EvalContext context)

Specified by:

compute in class Expression

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computeValue

public java.lang.Object computeValue(org.apache.commons.jxpath.ri.EvalContext context)

Returns the value of the variable.

Specified by:

computeValue in class Expression

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