Mule Expression Language (MEL) in Mule



Mule Expression Language (MEL)


MEL is a lightweight, Mule-specific expression language that you can use to access and evaluate the data in the payload, properties and variables of a Mule message. Accessible and usable from within virtually every message processor in Mule, MEL enables you to quickly and elegantly filter, route, or otherwise act upon the different parts of the Mule message object.

http listener path : It returns http listener path

 #[message.inboundProperties.'http.listener.path']  

http method : It returns http method

#[message.inboundProperties.'http.method'] 

http query params : It returns http query parameters
#[message.inboundProperties.'http.query.params'.{param name}]  

http query string  : It returns http query string

#[message.inboundProperties.'http.query.string'] 

http remote address : It returns http remote address

#[message.inboundProperties.'http.remote.address'] 

http request path : It returns http request path

#[message.inboundProperties.'http.request.path']  

http.request.uri :  It returns http request uri 

#[message.inboundProperties.'http.request.uri']  

http.scheme : It returns http scheme 

#[message.inboundProperties.'http.scheme']  

http status : It returns http status

#[message.inboundProperties.'http.status']

http uri params : It returns http uri parameters

#[message.inboundProperties.'http.uri.params']
  
http version : It returns http version
#[message.inboundProperties.'http.version'] 
  
correlationGroupSize : It returns correlationGroupSize
#[message.correlationGroupSize]

correlationId : It returns correlationId 

#[message.correlationId]

correlationSequence : It returns correlationSequence 

#[message.correlationSequence]
  
dataType : It returns data type
#[message.dataType]

exception : It returns exception type

#[message.exception]

id : It returns id

#[message.id]

inboundAttachments : It returns inboundAttachments 

#[message.inboundAttachments]

outboundAttachments : It returns outboundAttachments

#[message.outboundAttachments]

MULE_ENCODING : It returns mule encoding

#[message.outboundProperties.MULE_ENCODING]

replyTo : It returns reply to

#[message.replyTo]

rootId : It returns root id

#[message.rootId]

payload : It returns payload
#[message.payload] 

for accessing flow variables : 

#[flowVars.variablename]

for accessing session variables : 

#[sessionVars.variablename]

for accessing record variables : 

#[recordVars.variablename]

for accessing inbound header values : 

#[message.inboundProperties.headername]



© 2020 goformule.com

Share on :

Mule 4:

XML to JSON in mule 4 Web service consumer VM Validation in Mule 4 Until Successful
Sub flow Set Variable & Remove Variable Set Transaction ID Scatter Gather Round Robin
Consume Restful Service CRUD in Mule 4 Parse Template Object to JSON Load Static Resource
JSON to XML Invoke Idempotent Filter ForEach Flat file to JSON
Fixwidth to JSON First Successful File Execute Error Handling
Email Dynamic Evaluate Custom Business Event CSV to JSON Copybook to JSON
Choice Router Async RabbitMQ


Mule 3:


Database Connector Async CXF Attachement XSLT
Mongo DB Cache scope Custom Business Event Gzip Compress Expression
SMTP For Each Expression Javascript Filter Reference
Salesforce Message Enricher Groovy Parse Template Idempotent
VM Poll Invoke Ruby Message
Webservice consumer Python Transformer reference Message Property Not
Collection Aggregator First Sucessful Catch Exception Strategy Reference Exception Strategy Or
Choice Message Chunk Aggregator Choice Exception Strategy Global Exception Strategy Schema Validation
Custom Aggregator Scatter Gather Custom Exception Strategy Batch Processing MEL
M Unit RAML Map Operator API Mocking Dataweave