aaefe51909
Fixes https://github.com/spring-projects/spring-integration/issues/3003 Statically defined flows with a publish/subscribe channel invoke the subscriptions in natural (declared) order. The components in the flow are started by the application context in phases (consumers, then producers) and bean declaration order within each phase. When a dynamically declared flow is started, the components are started by the `StandardIntegrationFlow` in reverse order (last to first) so that we don't start producing messages before the flow is fully wired. This has the side-effect that pub/sub subscribers are invoked in an unnatural (last to first) order. All subscription sub-flows start with a bridge from the pub/sub channel to the first component's input channel. The `BroadcastingDispatcher` honors the `Ordered` interface. Change the `PublishSubscribeSpec` to set the `order` property so that subscribers are always invoked in the natural order, regardless of whether the flow is statically or dynamically defined.
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