net.sf.oval.expression
Class ExpressionLanguageJEXLImpl

java.lang.Object
  net.sf.oval.expression.ExpressionLanguageJEXLImpl

All Implemented Interfaces:

ExpressionLanguage

public class ExpressionLanguageJEXLImpl
extends Object
implements ExpressionLanguage

Author:

Sebastian Thomschke

Constructor Summary

ExpressionLanguageJEXLImpl()

Method Summary

Object	evaluate(String expression, Map<String,?> values) Evaluates the given expression.
boolean	evaluateAsBoolean(String expression, Map<String,?> values) Evaluates the given expression and expects it to return a boolean.

Methods inherited from class java.lang.Object

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

Constructor Detail

ExpressionLanguageJEXLImpl

public ExpressionLanguageJEXLImpl()

Method Detail

evaluate

public Object evaluate(String expression,
                       Map<String,?> values)
                throws ExpressionEvaluationException

Evaluates the given expression.

Specified by:

evaluate in interface ExpressionLanguage

Parameters:

expression - the expression to evaluate

values - context values passed to the interpreter

Returns:

the result of the expression evaluation

Throws:

ExpressionEvaluationException - in case of an invalid expression

evaluateAsBoolean

public boolean evaluateAsBoolean(String expression,
                                 Map<String,?> values)
                          throws ExpressionEvaluationException

Evaluates the given expression and expects it to return a boolean.

Specified by:

evaluateAsBoolean in interface ExpressionLanguage

Parameters:

expression - the expression to evaluate

values - context values passed to the interpreter

Returns:

the result of the expression evaluation

Throws:

ExpressionEvaluationException - If an error during evaluation occurs or if the return value is not a boolean value.