Previously, #containsBean Javadoc advertised that a true return value
indicates that a call to #getBean for the same name would succeed.

This is actually not the case, and has never been.  The semantics
of #containsBean have always been to indicate whether a bean definition
with the given name is definied or a singleton instance with the given
name has been registered.

The Javadoc now reflects this accurately.

Issue: SPR-8690

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…ween string paths and path segment lists automatically.

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…AndView containing a View

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… correctly.

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…formation.

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…SP form tags.

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…rverHttpRequest.

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…lerMapping.

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1. Consider single-purpose return value types like HttpEntity, Model,
View, and ModelAndView ahead of annotations like @responsebody and
@ModelAttribute. And reversely consider multi-purpose return value 
types like Map, String, and void only after annotations like
@rb and @ma.

2. Order custom argument resolvers and return value handlers after the
built-in ones also clarifying the fact they cannot be used to override
the built-in ones in Javadoc throughout.

3. Provide hooks in RequestMappingHandlerAdapter that subclasses can use
to programmatically modify the list of argument resolvers and return
value handlers, also adding new getters so subclasses can get access
to what they need for the override.

4. Make SessionStatus available through ModelAndViewContainer and 
provide an argument resolver for it.

5. Init test and javadoc improvements.




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RequestCondition types keep individual expression types (e.g. the
discrete header or param expressions) package private. Although the 
implementation of these types should remain private, there is no 
reason not to provide access to the underlying expression data --
e.g. for creating a REST endpoint documentation tool, or if you 
want to know which of the "consumes"/"produces" media types
are negated.

This change ensures that all RequestCondition types have a public
getter that makes available the basic expression data. 




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Make it possible to hook in custom ServletRequestDataBinderFactory
by overriding RequestMappingHandlerAdapter. 

Create ExtendedServletRequestDataBinder to add URI template vars
to the binding values taking advantage of a new extension hook in
ServletRequestDataBinder to provide additional values to bind.




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…nners.model.MultipleFailureException, which has been deprecated in JUnit 4.9.

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… is a super-class of the actual target.

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…rmined why changes to GenericConversionService broke this test.

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…nges to GenericConversionService broke this test.

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When a @ModelAttribute is instantiated from a URI variable with type
conversion, if conversion fails allow the exception to propagate. 
This is consistent with what happens on type conversion failure with
@PathVariable and other args that rely on type conversion.



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…"cacheUnresolved"=true; SPR-8173)

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The AbstractEntityMangerFactory now exposes the provider specific interface determined by the persistence provider class name even if the persistence provider is not configured specifically. We support Hibernate, EclipseLink and OpenJPA here. DataNucleus is not exposing a special interface, so there's no need to handle it.