SPRING INTEGRATION CHANGELOG
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Changes in version 1.0.0.m2 (Feb 28, 2008)
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*** CORE API ***

Defined the ChannelInterceptor strategy interface
Implemented new priority-based MessageChannel (PriorityChannel)
Created a MessageSelectingInterceptor, a ChannelInterceptor that delegates to a MessageSelector
Added clear and purge methods to MessageChannel (purge accepts a MessageSelector)
Implemented a ChannelPurger that delegates to one or more MessageSelectors
ChannelRegistry now provides 'unregister' method for runtime removal of channels
Added RequestReplyTemplate for synchronous, blocking request/reply behavior over an asynchronous channel
Added isExpired() method to Message
Added a constructor to GenericMessage that copies MessageHeader properties and attributes
Using the header-copying constructor in MessageHandler adapters to preserve header information
Undeliverable replies from endpoint are passed to its ErrorHandler
ErrorHandler is now a configurable strategy for MessageEndpoints
ReplyHandler is now a configurable strategy for MessageEndpoints
Subscription is now immutable
Errors in ConcurrentHandler are now always logged at DEBUG level, and at WARN level if no 'errorHandler' is available
Endpoints now set the 'correlationId' on reply Messages
Defined Aggregator and CompletionStrategy and implemented an AggregatingMessageHandler
SplitterMessageHandlerAdapter now sets sequenceNumber and sequenceSize header properties automatically
Added 'sendTimeout' property to SplitterMessageHandlerAdapter

*** ADAPTERS ***

Added Mail target adapter
Acknowledge modes are now configurable for JmsMessageDrivenSourceAdapter
JMS attributes are now set from the MessageHeader prior to sending via JmsTargetAdapter
The <jms-source/> element now accepts a 'message-converter' attribute

*** CONFIGURATION ***

Added <interceptor/> sub-element for <channel/>
Added <selector/> sub-element for <endpoint/>
Added <handler-chain> element that accepts <handler/> sub-elements for creating a MessageHandlerChain
Added <aggregator/> element to the namespace for creating AggregatingMessageHandlers
Added "dataype" attribute to the <channel/> element for message payload datatype enforcement
Added 'initialDelay' and 'fixedRate' attributes to the @Polled annotation
Added 'destination-name' attribute for JmsTargetAdapter
Added 'autoStartup' property to MessageBus (and corresponding XML attribute) with a default value of 'true'
Added 'defaultConcurrencyPolicy' property to MessageBus (and corresponding XML sub-element)
Defined default error channel key as "errorChannel" (also added ERROR_CHANNEL_NAME constant in MessageBus)

*** GENERAL ***

Separated "spring-integration-core" from "spring-integration-adapters"
Added manifest properties for OSGi-compliance
Refactored package structure to remove all cycles
Using java.util.UUID for default ID generation strategy
Increased DEBUG logging throughout, especially for channel and endpoint
Components delegating to (Scheduled)ExecutorService are now configurable through standard injection