org.mule.expression

Class FunctionExpressionEvaluator

java.lang.Object

org.mule.expression.AbstractExpressionEvaluator

org.mule.expression.FunctionExpressionEvaluator

All Implemented Interfaces:

ExpressionEvaluator, NamedObject

public class FunctionExpressionEvaluator
extends AbstractExpressionEvaluator

This property extractor doesn't actually extract a property from the message, instead it allows for certain functions to be called and returns a result. The functions it supports are -

• now - returns an Timestamp with the current time.
• date - returns a Date with the current time.
• dateStamp - returns a String that contains the current date formatted according to DEFAULT_DATE_FORMAT.
• datestamp:dd-MM-yyyy - returns a String that contains the current date formatted according to the format passed into the function.
• uuid - returns a globally unique identifier
• hostname - returns the hostname of the machine Mule is running on
• ip - returns the ip address of the machine Mule is running on
• count - returns a local count that will increment for each call. If the server is re-started the counter will return to zero
• payloadClass - Returns a fuly qualified class name of the payload as a string
• shortPayloadClass - Returns just the class name of the payload as a string

Field Summary

Fields

Modifier and Type	Field and Description
static String	COUNT_FUNCTION
static String	DATE_FUNCTION
static String	DATESTAMP_FUNCTION
static String	DEFAULT_DATE_FORMAT
static String	HOSTNAME_FUNCTION
static String	IP_FUNCTION
static String	NAME
static String	NOW_FUNCTION
static String	PAYLOAD_CLASS_FUNCTION
static String	SHORT_PAYLOAD_CLASS_FUNCTION
static String	SYSTIME_FUNCTION
static String	UUID_FUNCTION

Constructor Summary

Constructors

Constructor and Description
FunctionExpressionEvaluator()

Method Summary

Methods

Modifier and Type	Method and Description
Object	evaluate(String name, MuleMessage message) Extracts a single property from the message
String	getName() Gts the name of the object

Methods inherited from class org.mule.expression.AbstractExpressionEvaluator

evaluateTyped

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

DEFAULT_DATE_FORMAT

public static final String DEFAULT_DATE_FORMAT

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Constant Field Values

NOW_FUNCTION

public static final String NOW_FUNCTION

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Constant Field Values

DATE_FUNCTION

public static final String DATE_FUNCTION

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Constant Field Values

DATESTAMP_FUNCTION

public static final String DATESTAMP_FUNCTION

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Constant Field Values

SYSTIME_FUNCTION

public static final String SYSTIME_FUNCTION

See Also:

Constant Field Values

UUID_FUNCTION

public static final String UUID_FUNCTION

See Also:

Constant Field Values

HOSTNAME_FUNCTION

public static final String HOSTNAME_FUNCTION

See Also:

Constant Field Values

IP_FUNCTION

public static final String IP_FUNCTION

See Also:

Constant Field Values

COUNT_FUNCTION

public static final String COUNT_FUNCTION

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Constant Field Values

PAYLOAD_CLASS_FUNCTION

public static final String PAYLOAD_CLASS_FUNCTION

See Also:

Constant Field Values

SHORT_PAYLOAD_CLASS_FUNCTION

public static final String SHORT_PAYLOAD_CLASS_FUNCTION

See Also:

Constant Field Values

Constructor Detail

FunctionExpressionEvaluator

public FunctionExpressionEvaluator()

Method Detail

evaluate

public Object evaluate(String name,
              MuleMessage message)

Description copied from interface: ExpressionEvaluator

Extracts a single property from the message

Parameters:

name - 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()

Gts the name of the object

Returns:

the name of the object