911cdc86b5
* Refinement for gateway Mono processing * Introduce a `MessagingGatewaySupport.MonoReplyChannel` instead of `FutureReplyChannel` for better on demand handling and reusing a `Mono` returned from the target handler * Refactor `GatewayProxyFactoryBean` to identify a target return type (including generics for `Function`) during initialization * Handle a `Mono` return type via `MessagingGatewaySupport.sendAndReceiveMessageReactive()` * Some `@Nullable` in the `GatewayProxyFactoryBean` and `ExpressionUtils` * Add `MonoFunction` test-case into the `FunctionsTests.kt` * * Deprecate `GatewayProxyFactoryBean.setServiceInterface()` in favor of ctor initialization * Fix `GatewayProxyFactoryBean.setServiceInterface()` usage in tests
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: https://projects.spring.io/spring-integration