Explains about variables in Mule

1. Variables in Mule

2. Agenda
 Types of variables
 Scope of variables
 How to create variables
 How to access variables
 Demo

3. Variables
 Types of variables in Mule
 Flow variables
 Session Variables
 Record Variables
Flow-
1
Flow-
2
F1 S1
S1
Availability Flow
Variables are limited to
flow scope.
Session Variables are
available to access on
all flows of application

4. Scope of variables
 The scope of Flow variables are within the Flow,
When the message leaves the flow,
the flow variable, set by the Variable Transformer ,
does not carry over to the next flow or application.
 Variables set with a variable transformer persist only
for the current flow and cannot cross the transport
barrier.
 session variables specified using the Session
Variable Transformer persist as long as the message
continues to be processed within your Mule
application, regardless of flow.
 Session variables set with a session variable
transformer persist for the entire message lifecycle,
regardless of transport barriers.

5. How to create variables

6. How to access the variables
 Using MEL variables can be accessed in the flow :
 #[sessionVars.s1]
 #[flowVars.emoNo]
 In Java code :
 muleMessage.getInvocationProperty("propertyName")

7. •DEMO

8.  http://localhost:8082/?empno=121