org.mule.expression
Class MessagePayloadExpressionEvaluator

java.lang.Object
  org.mule.expression.MessagePayloadExpressionEvaluator

All Implemented Interfaces:

MuleContextAware, ExpressionEvaluator, NamedObject

public class MessagePayloadExpressionEvaluator
extends Object
implements ExpressionEvaluator, MuleContextAware

Returns the message payload. If the expression is set to a class name then Mule will attempt to transform the payload by discovering the correct transformer(s) in the registry. This is only suited for simple transformations between common types.

#[payload:byte[]]

or

#[payload:org.mule.api.OutputHandler]

If the object passed in is not a MuleMessage, the same object will be returned.

See Also:

ExpressionEvaluator, DefaultExpressionManager

Field Summary

static String	BYTE_ARRAY
protected Log	logger logger used by this class
protected MuleContext	muleContext
static String	NAME

Constructor Summary

MessagePayloadExpressionEvaluator()

Method Summary

Object	evaluate(String expression, MuleMessage message) Extracts a single property from the message
String	getName() Gets the name of the object
void	setMuleContext(MuleContext context)
void	setName(String name) Sets the name of the object

Methods inherited from class java.lang.Object

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

Field Detail

NAME

public static final String NAME

See Also:

Constant Field Values

BYTE_ARRAY

public static final String BYTE_ARRAY

See Also:

Constant Field Values

logger

protected final transient Log logger

logger used by this class

muleContext

protected MuleContext muleContext

Constructor Detail

MessagePayloadExpressionEvaluator

public MessagePayloadExpressionEvaluator()

Method Detail

setMuleContext

public void setMuleContext(MuleContext context)

Specified by:

setMuleContext in interface MuleContextAware

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

getName

public String getName()

Gets the name of the object

Specified by:

getName in interface NamedObject

Returns:

the name of the object

setName

public void setName(String name)

Sets the name of the object

Specified by:

setName in interface NamedObject

Parameters:

name - the name of the object