The Property Expression Language allows you to extract values of named exchange properties.
The recipientList element of the Spring DSL can utilize a property expression like:
In this case, the list of recipients are contained in the property 'myProperty'.
And the same example in Java DSL:
And with a slightly different syntax where you use the builder to the fullest (i.e. avoid using parameters but using stacked operations, notice that property is not a parameter but a stacked method call)
The Property language is part of camel-core.