org.apache.camel.processor.aggregate

Interface PreCompletionAwareAggregationStrategy

All Superinterfaces:

AggregationStrategy

public interface PreCompletionAwareAggregationStrategy
extends AggregationStrategy

A specialized AggregationStrategy which enables the aggregator to run in pre-completion mode. This allows the preComplete(org.apache.camel.Exchange, org.apache.camel.Exchange) method to control the completion. Only completion timeout or interval can also be used; any other completion configuration is not in use.

Using this strategy supports the use-case, where an incoming Exchange has information that may trigger the completion of the current group. And then use the new incoming Exchange to start a new group thereafter from scratch.

Method Summary

Methods

Modifier and Type	Method and Description
boolean	preComplete(Exchange oldExchange, Exchange newExchange) Determines if the aggregation should complete the current group, and start a new group, or the aggregation should continue using the current group.

Methods inherited from interface org.apache.camel.processor.aggregate.AggregationStrategy

aggregate

Method Detail

preComplete

boolean preComplete(Exchange oldExchange,
                  Exchange newExchange)

Determines if the aggregation should complete the current group, and start a new group, or the aggregation should continue using the current group.

Parameters:

oldExchange - the oldest exchange (is null on first aggregation as we only have the new exchange)

newExchange - the newest exchange (can be null if there was no data possible to acquire)

Returns:

true to complete current group and start a new group, or false to keep using current