# By Oliver Gierke
* SPR-10678:
  Fixed potential NPE in SharedEntityManagerCreator

Fix SharedEntityManagerCreator.createSharedEntityManager to correctly
forward an empty array in case that EntityManagerFactoryInfo returns
null from getEntityManagerInterface().

Previously the var-args invocation had turned null into an array with
a null value which caused a NullPointerException in the call to
Proxy.newProxyInstance() further down the call stack.

Issue: SPR-10678

Reduce INFO level startup logging to DEBUG

Issue: SPR-10758

Update ConfigurationClassParser to resolve any ${} placeholders from
@ImportResource values.

Issue: SPR-10686

Added 'processExternalEntities' property to the JAXB2Marshaller, which
indicates whether external XML entities are processed when
unmarshalling.

Default is false, meaning that external entities are not resolved.
Processing of external entities will only be enabled/disabled when the
Source} passed to #unmarshal(Source) is a SAXSource or StreamSource. It
has no effect for DOMSource or StAXSource instances.

The following commit in 3.2.3 had a side effect on CNVR:
https://github.com/SpringSource/spring-framework/commit/aaded7e30b06cc70a354856a2288acd04045b673

It appears that CNVR doesn't treat a request for "*/*" differently
from a request that does not request content types. Both should be
interpreted as "any content type is acceptable". This fix ensures
that CNVR treats these two cases the same way.

Issue: SPR-10683

Issue: SPR-10704

Issue: SPR-10621

Also remove Servlet 3 bridge classes no longer needed since Spring
Framework 4 compiles with the Servlet 3 API. That means applications
may need to run tests with the Servlet 3 API jar although
technically they don't have to run with that in production.

Issue: SPR-10673

Issue: SPR-10721

The new UserDestinationMessageHandler resolves messages with
destinations prefixed with "/user/{username}" and resolves them into a
destination to which the user is currently subscribed by appending the
user session id.

For example a destination such as "/user/john/queue/trade-confirmation"
would resolve "/trade-confirmation/i9oqdfzo" assuming "i9oqdfzo" is the
user's session id.

Remove base class for STOMP-related message handler classes
(AbstractSimpMessageHandler), polish subclasses and fix issues with
more significant updates to STOMP broker relay.

Introduce base class for SubscribableChannel implementations providing
consistent logging for all channel implementations.

Consolidates new, messaging-related classes from spring-context and
spring-websocket into one module.

- Added org.springframework.http.StreamingHttpOutputMessage, which
  allows for a settable request body (as opposed to an output stream).

- Added http.client.HttpComponentsStreamingClientHttpRequest, which
  implements the above mentioned interface, mapping setBody() to a
  setEntity() call on the Apache HttpClient HttpEntityEnclosingRequest.

- Added a 'bufferRequestBody' property to the
  HttpComponentsClientHttpRequestFactory. When this property is set to
  false (default is true), we return a
  HttpComponentsStreamingClientHttpRequest instead of a (request
  buffering) HttpComponentsClientHttpRequest.

Issue: SPR-10728

* SPR-10650:
  Fix typo in ModelAndViewMethodReturnValueHandler

This commit fixes a typo in the class-level Javadoc for
ModelAndViewMethodReturnValueHandler.

Issue: SPR-10650

The SubscriptionRegistry and implementations are now in a package
together with SimpleBrokerWebMessageHandler and primarily support
with matching subscriptions to messages. Subscriptions can contain
patterns as supported by AntPathMatcher.

StopmWebSocketHandler no longer keeps track of subscriptions and simply
ignores messages without a subscription id, since it has no way of
knowing broker-specific destination semantics for patterns.