Splitting a message, and processing and gathering

This recipe will show you how you how to split a gist into individual fragments, process each fragment individually, and re-aggregate the processed exchanges back Into a single exchange. In EIP terms, this is known as a Composed Message Processor, and Is do up of a combination of a Splitter and an Aggregated. How to do It In order to split and aggregate (Join) a message, combine a split digital subscriber line statement with an associated Congo as follows 1. Define an Segregationists Instance as described In the Aggregating related messages recipe.For this example, we will re procedure theSetAggregationStrategy Implementation from that recipe 2. Define a regular split block as per the Splitting a message into fragments recipe, breaking up the payload as you see fit through the use of an expression. Reference the Segregationists instance through the schema attribute in the split element $body) In the Java DSL, refer to the Segregationists instance as the second parametric quantit y to the split() statement from(directin) . Split(body(), new Straightforwardness()) . End() . To(mockout) How it worksWhen an exchange reaches the split statement, It Is broken up Into Individual fragments as expected, each of which Is processed through the steps defined within the block. When each split fragments exchange reaches the end of the split block, It Is passed Into theAggregationStrategy for aggregation. When all of the fragments have been processed, the final aggregated message harvest-tide down the route from the split block. This Is different from the normal Splitter behavior, which forwards the original message to that statement after the split statement.TIP By default, all affect Is performed by a single thread. You can parallelize the processing of each message fragment by using theparallelprocesslng option as described in the Processing split messages in parallel recipe. Theres more An Segregationists. When an exception is thrown during the processing of the fra gment, the exchange will be immediately passed to Segregationists. It is then up to the strategy to decide what to do with this information.