org.springframework.integration.transformer
Interfaces 
HeaderEnricher.HeaderValueMessageProcessor
Transformer
Classes 
AbstractMessageProcessingTransformer
AbstractPayloadTransformer
AbstractTransformer
ClaimCheckInTransformer
ClaimCheckOutTransformer
ExpressionEvaluatingTransformer
HeaderEnricher
HeaderFilter
MapToObjectTransformer
MessageTransformingChannelInterceptor
MessageTransformingHandler
MethodInvokingTransformer
ObjectToMapTransformer
ObjectToStringTransformer
PayloadDeserializingTransformer
PayloadSerializingTransformer
PayloadTypeConvertingTransformer
Exceptions 
MessageTransformationException