org.hkijena.jipipe.extensions.expressions

Class ExpressionEvaluator

java.lang.Object

com.fathzer.soft.javaluator.AbstractEvaluator<Object>

org.hkijena.jipipe.extensions.expressions.ExpressionEvaluator

Direct Known Subclasses:

DefaultExpressionEvaluator

public abstract class ExpressionEvaluator
extends com.fathzer.soft.javaluator.AbstractEvaluator<Object>

The base class for an evaluator

Constructor Summary

Constructors

Modifier	Constructor and Description
protected	ExpressionEvaluator(com.fathzer.soft.javaluator.Parameters parameters) Constructor.

Method Summary

Modifier and Type	Method and Description
boolean	test(String expression, ExpressionVariables variables) Returns the boolean evaluated expression.

Methods inherited from class com.fathzer.soft.javaluator.AbstractEvaluator

evaluate, evaluate, evaluate, evaluate, evaluate, getConstants, getFunctions, getOperators, guessOperator, tokenize, toValue, validateHomonyms

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionEvaluator

protected ExpressionEvaluator(com.fathzer.soft.javaluator.Parameters parameters)

Constructor.

Parameters:

parameters - The evaluator parameters.
Please note that there's no side effect between the evaluator and the parameters. So, changes made to the parameters after the call to this constructor are ignored by the instance.

Method Detail

test

public boolean test(String expression,
                    ExpressionVariables variables)

Returns the boolean evaluated expression. If the expression does not return a boolean, an exception is thrown.

Parameters:

expression - the expression

variables - set of variables to use