org.mule.expression
Class IllegalExpressionEvaluator

java.lang.Object
  org.mule.expression.IllegalExpressionEvaluator

All Implemented Interfaces:

ExpressionEvaluator, NamedObject

Direct Known Subclasses:

ExceptionTypeExpressionEvaluator, PayloadTypeExpressionEvaluator, RegexExpressionEvaluator, WilcardExpressionEvaluator

public abstract class IllegalExpressionEvaluator
extends Object
implements ExpressionEvaluator

Defines an ExpressionEvaluator that can never be evaluated.

Field Summary

static String

ILLEGAL_EVALUATOR_MESSAGE

Constructor Summary

IllegalExpressionEvaluator()

Method Summary

Object

evaluate(String expression, MuleMessage message) Extracts a single property from the message

Methods inherited from class java.lang.Object

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

Methods inherited from interface org.mule.api.NamedObject

getName

Field Detail

ILLEGAL_EVALUATOR_MESSAGE

public static final String ILLEGAL_EVALUATOR_MESSAGE

See Also:

Constant Field Values

Constructor Detail

IllegalExpressionEvaluator

public IllegalExpressionEvaluator()

Method Detail

evaluate

public Object evaluate(String expression,
                       MuleMessage message)

Description copied from interface: ExpressionEvaluator

Extracts a single property from the message

Specified by:

evaluate in interface ExpressionEvaluator

Parameters:

expression - the property expression or expression

message - the message to extract from

Returns:

the result of the extraction or null if the property was not found