Abhishek Jain

Use of MEL Access Object Level Properties Access Method Level Properties Operators Operators Evaluation Data Extraction Topic for next session Reference

-In the previous slide example, MEL is calling the inbound

property from the mule message for the value of “Host”

-All properties are stored in Map

-There are two ways to access them

-#[message.getInboundProperty(‘host’)]

-#[message.InboundProperties[‘host’]]

-In order to access Mule Registry, use below expression

-#[app.registry]

If payload is of type java objectthen properties can be accessed directly by calling the fieldname from payload.

For example, payload is of CustomerDetails object and want to access lastname then use the below expression

#[payload.lastName]

If payload is of type java objectthen methods can also be triggered using MEL

For example, payload is of CustomerDetails object and want to trigger getFirstName method then use below expressiono

#[payload.getFirstName()]

#[‘hello’ + ‘John’] => Hello John

Standard Comparison Operators:

==, !=, >, <, >=, =<

Contains – Similar to like Operator

Is- Checks the type of an object

Mainly used in Choice Router

#[xpath(‘expression’)] #[regex(‘expression’)]

List/Maps in MEL

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