net.sf.oval.expression
Class ExpressionLanguageScriptEngineImpl

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

All Implemented Interfaces:

ExpressionLanguage

public class ExpressionLanguageScriptEngineImpl
extends Object
implements ExpressionLanguage

JSR223 Support

Author:

Sebastian Thomschke

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.
static ExpressionLanguageScriptEngineImpl	get(String languageId)

Methods inherited from class java.lang.Object

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

Method Detail

get

public static ExpressionLanguageScriptEngineImpl get(String languageId)

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.