org.mule.expression
Class MessageProcessorExpressionEvaluator

java.lang.Object
  org.mule.expression.MessageProcessorExpressionEvaluator

All Implemented Interfaces:

ExpressionEvaluator, NamedObject

public class MessageProcessorExpressionEvaluator
extends Object
implements ExpressionEvaluator

Returns the message result of invoking the specified globally accessible message processor. If just the message processor name is specified then the current message is used. If a nested expression is specified then this is first evaluated and the result of this evaluation used when invoking the message processor Example:

• "StringToMyObjext" - invokes the 'StringToMyObjext' transformer using the current message
• "StringToMyObjext:header:one" - invokes the 'StringToMyObjext' transformerusing the value of the outbound header 'one'
• "thatFlow:xpath://my/path" - invokes the 'thatFlow' flow using the result of the xpath evaluation

If no expression is set the MuleMessage itself will be returned.

See Also:

ExpressionEvaluator, DefaultExpressionManager

Field Summary

protected Log	logger
static String	NAME

Constructor Summary

MessageProcessorExpressionEvaluator()

Method Summary

Object	evaluate(String expression, MuleMessage message) Extracts a single property from the message
protected MuleMessage	evaluateProcessorArgument(MuleMessage message, String processorArgExpression)
String	getName() Gets the name of the object
protected MessageProcessor	lookupMessageProcessor(String processorName, MuleContext muleContext)

Methods inherited from class java.lang.Object

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

Field Detail

logger

protected transient Log logger

NAME

public static final String NAME

See Also:

Constant Field Values

Constructor Detail

MessageProcessorExpressionEvaluator

public MessageProcessorExpressionEvaluator()

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

lookupMessageProcessor

protected MessageProcessor lookupMessageProcessor(String processorName,
                                                  MuleContext muleContext)

evaluateProcessorArgument

protected MuleMessage evaluateProcessorArgument(MuleMessage message,
                                                String processorArgExpression)

getName

public String getName()

Gets the name of the object

Specified by:

getName in interface NamedObject

Returns:

the name of the object