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org.apache.commons.jxpath
Class BasicVariables  

java.lang.Object
  org.apache.commons.jxpath.BasicVariables

All Implemented Interfaces:

Variables

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public class BasicVariables

extends java.lang.Object

implements Variables

A basic implementation of the Variables interface that uses a HashMap.

Version:

$Revision: 1.7 $ $Date: 2004/02/29 14:17:42 $

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Field Summary
private  java.util.HashMap	vars           Contains the values of declared variables

 

Constructor Summary

BasicVariables()

 

Method Summary
void	declareVariable(java.lang.String varName, java.lang.Object value)           Defines a new variable with the specified value or modifies the value of an existing variable.
java.lang.Object	getVariable(java.lang.String varName)           Returns the value of the variable if it is defined, otherwise, throws IllegalArgumentException
boolean	isDeclaredVariable(java.lang.String varName)           Returns true if the variable has been defined, even if the value of the variable is null.
java.lang.String	toString()           Convert this Object to a human-readable String.
void	undeclareVariable(java.lang.String varName)           Removes an existing variable.

 

Methods inherited from class java.lang.Object

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

 

Field Detail

vars

private java.util.HashMap vars

Contains the values of declared variables

Constructor Detail

BasicVariables

public BasicVariables()

Method Detail

isDeclaredVariable

public boolean isDeclaredVariable(java.lang.String varName)

Returns true if the variable has been defined, even if the value of the variable is null.

Specified by:

isDeclaredVariable in interface Variables

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getVariable

public java.lang.Object getVariable(java.lang.String varName)

Returns the value of the variable if it is defined, otherwise, throws IllegalArgumentException

Specified by:

getVariable in interface Variables

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declareVariable

public void declareVariable(java.lang.String varName,
                            java.lang.Object value)

Defines a new variable with the specified value or modifies the value of an existing variable.

Specified by:

declareVariable in interface Variables

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undeclareVariable

public void undeclareVariable(java.lang.String varName)

Removes an existing variable. May throw UnsupportedOperationException.

Specified by:

undeclareVariable in interface Variables

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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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