nz.org.venice.parser
Class ImplicitVariables

java.lang.Object
  nz.org.venice.parser.ImplicitVariables

public class ImplicitVariables

extends java.lang.Object

A collection of the implicit variables which is always available in an expression evaluation.

Author:

Mark Hummel

Method Summary

boolean	contains(java.lang.String name) Used for checking the user defined variables don't clash with the implicit variables.
static ImplicitVariables	getInstance() Return the static ImplcitVariables instance for this application
void	setup(Variables variables, boolean ordered) Add the implicit variables into the set of variables provided.

Methods inherited from class java.lang.Object

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

Method Detail

getInstance

public static ImplicitVariables getInstance()

Return the static ImplcitVariables instance for this application

setup

public void setup(Variables variables,
                  boolean ordered)

Add the implicit variables into the set of variables provided.

Parameters:

variables - The set of variables which will have the implcit variables added

ordered - Whether or not to add the order implicit variable

contains

public boolean contains(java.lang.String name)

Used for checking the user defined variables don't clash with the implicit variables.

Returns:

true if the variable being added is an implicit one