Alexander Ivanov 4904d7eea0 #1021: Fix checkstyle warnings by changing the license header template (#1027)
* Add custom license header style in order to comply with Google's Checkstyle format

* Update license headers to comply with Google's Checkstyle format
2019-10-22 08:15:35 +03:00
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layout, title, folder, permalink, categories, tags
layout title folder permalink categories tags
pattern EIP Aggregator eip-aggregator /patterns/eip-aggregator/ Integration
Java
Difficulty-Intermittent
EIP

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.

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Applicability

Use the Aggregator pattern when

  • You need to combine multiple incoming messages
  • You want to process grouped data

Credits