Aggregation and Splitting Patterns

Some Java integration flows need to turn one large message into smaller work items, while others need to collect scattered fragments back into a coherent result. Ordering also matters when events arrive asynchronously or through multiple paths.

This section covers the patterns that split, regroup, and resequence messages so downstream consumers receive data in the shape and order they actually need.

In this section

• Splitter Pattern in Java
  Break one Java message into smaller parts so downstream consumers can process items independently.
• Aggregator Pattern in Java
  Combine related Java messages into one result when downstream processing needs a complete view instead of individual fragments.
• Resequencer Pattern in Java
  Restore message order in Java integration flows when events arrive out of sequence but must be processed consistently.