FunctionExpression
We introduced the FunctionExpression
class (an implementation of SpEL’s Expression
interface) to let us use lambdas and generics
.
The Function<T, R>
option is provided for the DSL components, along with an expression
option, when there is the implicit Strategy
variant from Core Spring Integration.
The following example shows how to use a function expression:
.enrich(e -> e.requestChannel("enrichChannel")
.requestPayload(Message::getPayload)
.propertyFunction("date", m -> new Date()))
The FunctionExpression
also supports runtime type conversion, as is done in SpelExpression
.