Which mule choice expression when using properties?

Question

I have a Choice flow control node within my flow. I am basing the choice on a property located in a properties file. In the expression, it appears both of the following expressions work:

<!-- without using the MEL expression --> <when expression="${smtp.onSuccess.sendEmail}==true">

<!-- using the MEL expression --> <when expression="#[${smtp.onSuccess.sendEmail}==true]">

Is it acceptable for either method of expression or does best practices dictate that the MEL expression be used at all times?

Answer 1

Some processors do not require the explicit syntax. But I generally prefer to be explicit and use the full syntax.