JIRA: https://jira.spring.io/browse/INT-3944 Polishing (PR comments) and Doc Polish Polishing - PR Comments Remove custom `async` boolean in favor of the now public setter. Add exception to `JmsException` hierarchy. INT-3944: Polishing * Rename `asyncReplySupported` just to `async`. As well as its getter and setter. Plus fix docs on the matter * Polishing for the `JmsOutboundGateway` according PR comments * Rework `JmsOutboundGateway` to return `AbstractIntegrationMessageBuilder` instead of `Message` since `AbstractMessageProducingHandler` rebuilds `Message` for a new one to copy headers from request * Add `getPayload()` and `getHeaders()` to the `AbstractIntegrationMessageBuilder` to make the `Routing Slip` users happy, when the `AbstractIntegrationMessageBuilder` is pushed to the `Routing Slip path` function * Fix race condition in the `ChatMessageListeningEndpointTests`: the `stanza` parsing is done in the different Thread. Doc Polishing (Routing Slip) Fix timing issue in the `LastModifiedFileListFilterTests`: `Thread.sleep()` not always reflects the reality. Switch to the "past simulation" via explicit `File.setLastModified()`
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