.fluxTransform(Function) operator (#2541)
* Add Java DSL `.fluxTransform(Function)` operator For better interoperability with Reactor `Flux` from the end-user perspective introduce an operator which could call a target `Function` with integration data wrapped to the `Flux` and expect a `Publisher<?>` result to continue the flow. This way end-user just needs to implement a `Function` (or method) to accept the `Flux` as an input and return some `Publisher` after the sequence of reactive operators. Such a new operator also allows a smooth integration with the Spring Cloud Function, where it is just enough to lookup the function in the catalog and inject it into this operator * * Move `fluxTransform()` body to `Transformers` for cleaner context distribution
Spring Integration

Checking out and Building
To check out the project and build from source, do the following:
git clone git://github.com/spring-projects/spring-integration.git
cd spring-integration
./gradlew build
NOTE: While Spring Integration runs with Java SE 6 or higher, a Java 8 compiler is required to build the project.
If you encounter out of memory errors during the build, increase available heap and permgen for Gradle:
GRADLE_OPTS='-XX:MaxPermSize=1024m -Xmx1024m'
To build and install jars into your local Maven cache:
./gradlew install
To build api Javadoc (results will be in build/api):
./gradlew api
To build reference documentation (results will be in build/reference):
./gradlew reference
To build complete distribution including -dist, -docs, and -schema zip files (results will be in build/distributions)
./gradlew dist
Using Eclipse
To generate Eclipse metadata (.classpath and .project files), do the following:
./gradlew eclipse
Once complete, you may then import the projects into Eclipse as usual:
File -> Import -> Existing projects into workspace
Browse to the 'spring-integration' root directory. All projects should import free of errors.
Using IntelliJ IDEA
To generate IDEA metadata (.iml and .ipr files), do the following:
./gradlew idea
Resources
For more information, please visit the Spring Integration website at: http://projects.spring.io/spring-integration