6faec9901a
* Moved java XML and annotations dependencies to project level instead of as profiles * Set compiler language level to 11 * Removed jdk8 from travis build * Kept java level 8 in naked-objects/dom for datanucleus enhancer, for now.
layout, title, folder, permalink, categories, tags
| layout | title | folder | permalink | categories | tags | |||
|---|---|---|---|---|---|---|---|---|
| pattern | EIP Aggregator | eip-aggregator | /patterns/eip-aggregator/ | Integration |
|
Intent
Sometimes in enterprise systems there is a need to group incoming data in order to process it as a whole. For example you may need to gather offers and after defined number of offers has been received you would like to choose the one with the best parameters.
Aggregator allows you to merge messages based on defined criteria and parameters. It gathers original messages, applies aggregation strategy and upon fulfilling given criteria, releasing merged messages.
Applicability
Use the Aggregator pattern when
- You need to combine multiple incoming messages
- You want to process grouped data