org.springframework.integration.aggregator
Interfaces 
CorrelationStrategy
MessageGroupProcessor
MessageListProcessor
ReleaseStrategy
Classes 
AbstractAggregatingMessageGroupProcessor
AbstractCorrelatingMessageHandler
AggregatingMessageHandler
CorrelatingMessageBarrier
DefaultAggregatingMessageGroupProcessor
ExpressionEvaluatingCorrelationStrategy
ExpressionEvaluatingMessageGroupProcessor
ExpressionEvaluatingMessageListProcessor
ExpressionEvaluatingReleaseStrategy
HeaderAttributeCorrelationStrategy
MessageCountReleaseStrategy
MessageSequenceComparator
MethodInvokingCorrelationStrategy
MethodInvokingMessageGroupProcessor
MethodInvokingMessageListProcessor
MethodInvokingReleaseStrategy
PassThroughMessageGroupProcessor
ResequencingMessageGroupProcessor
ResequencingMessageHandler
SequenceNumberComparator
SequenceSizeReleaseStrategy
TimeoutCountSequenceSizeReleaseStrategy