Package org.drools.scenariosimulation.backend.expression

Class MVELExpressionEvaluator

java.lang.Object

org.drools.scenariosimulation.backend.expression.MVELExpressionEvaluator

All Implemented Interfaces:

ExpressionEvaluator

public class MVELExpressionEvaluator
extends Object
implements ExpressionEvaluator

Constructor Summary

Constructors

Constructor	Description
MVELExpressionEvaluator(ClassLoader classLoader)

Method Summary

Modifier and Type	Method	Description
protected String	cleanExpression(String rawExpression)	The clean works in the following ways: - NOT COLLECTIONS CASE: The given rawExpression without MVEL_ESCAPE_SYMBOL ('#'); - COLLECTION CASE: Retrieving the value from rawExpression, which is a JSON String node in this case, removing the MVEL_ESCAPE_SYMBOL ('#'); In both cases, the given String must start with MVEL_ESCAPE_SYMBOL.
protected Object	compileAndExecute(String rawExpression, Map<String,Object> params)
Object	evaluateLiteralExpression(String rawExpression, String className, List<String> genericClasses)
ExpressionEvaluatorResult	evaluateUnaryExpression(String rawExpression, Object resultValue, Class<?> resultClass)
String	fromObjectToExpression(Object value)

Methods inherited from class java.lang.Object

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

Constructor Detail

MVELExpressionEvaluator

public MVELExpressionEvaluator(ClassLoader classLoader)

Method Detail

evaluateUnaryExpression

public ExpressionEvaluatorResult evaluateUnaryExpression(String rawExpression,
                                                         Object resultValue,
                                                         Class<?> resultClass)

Specified by:

evaluateUnaryExpression in interface ExpressionEvaluator

evaluateLiteralExpression

public Object evaluateLiteralExpression(String rawExpression,
                                        String className,
                                        List<String> genericClasses)

Specified by:

evaluateLiteralExpression in interface ExpressionEvaluator

fromObjectToExpression

public String fromObjectToExpression(Object value)

Specified by:

fromObjectToExpression in interface ExpressionEvaluator

compileAndExecute

protected Object compileAndExecute(String rawExpression,
                                   Map<String,Object> params)

cleanExpression

protected String cleanExpression(String rawExpression)

The clean works in the following ways: - NOT COLLECTIONS CASE: The given rawExpression without MVEL_ESCAPE_SYMBOL ('#'); - COLLECTION CASE: Retrieving the value from rawExpression, which is a JSON String node in this case, removing the MVEL_ESCAPE_SYMBOL ('#'); In both cases, the given String must start with MVEL_ESCAPE_SYMBOL. All other cases are wrong: a IllegalArgumentException is thrown.

Parameters:

rawExpression -

Returns: