Table of Contents
1. Reactor-Extra
The reactor-extra artifact contains additional operators and utilities that are for
users of reactor-core with advanced needs, or incubating operators.
As this is a separate artifact, you need to explicitly add it to your build. The following example shows how to do so in Gradle:
dependencies {
compile 'io.projectreactor:reactor-core'
compile 'io.projectreactor.addons:reactor-extra' (1)
}| 1 | Add the reactor extra artifact in addition to core. See Getting Reactor for details about why you do not need to specify a version if you use the BOM, usage in Maven, and other details. |
1.1. TupleUtils and Functional Interfaces
The reactor.function package contains functional interfaces that complement the Java 8
Function, Predicate, and Consumer interfaces, for three to eight values.
TupleUtils offers static methods that act as a bridge between lambdas of these functional
interfaces to a similar interface on the corresponding Tuple.
This lets you easily work with independent parts of any Tuple, as the following example shows:
.map(tuple -> {
String firstName = tuple.getT1();
String lastName = tuple.getT2();
String address = tuple.getT3();
return new Customer(firstName, lastName, address);
});You can rewrite the preceding example as follows:
.map(TupleUtils.function(Customer::new)); (1)| 1 | (as Customer constructor conforms to Function3 functional interface signature) |
