This patch fixes several compiler warnings that do not point to code
problems. Two kinds of warnings are fixed. First in a lot of cases
@SuppressWarnings("unchecked") is used although there are no unchecked
casts happening. This seems to be a leftover from when the code base
was on Java 1.4, now that the code base was moved to Java 1.5 these are
no longer necessary. Secondly there some places where the raw types of
List and Class are used where there wildcard types (List<?> and
Class<?>) would work just as well without causing any raw type warnings.
These changes are beneficial particularly when working in Eclipse or
other IDEs because it reduces 'noise', helping to isolate actual
potential problems in the code.
The following changes have been made:
- remove @SuppressWarnings where no longer needed
- use wildcard types instead of raw types where possible
Even though the Javadoc for Constants#toCode and #toCodeForSuffix
specifies that a null value for the 'namePrefix' and 'nameSuffix'
parameters are respectively allowed, before this change passing a null
to either would result in a NullPointerException.
This change fixes constant name lookup for null values of these params
as if an empty string had been passed instead. This way of handling a
null value is consistent with the rest of Constants class API.
Issue: SPR-8278
Previously, StringUtils#parseLocaleString would parse locale strings
having the same lowercase token for both language and country
incorrectly, e.g. 'tr_tr' would parse to 'tr_TR_tr' as opposed to the
expected 'tr_TR'.
This commit fixes this behavior by using using String#lastIndexOf
instead of String#indexOf when determining the location of the country
code token.
Issue: SPR-9420
In AnnotationUtils#findAnnotation(Method, Class), the search for a
method annotation fails if:
- the original method does not have the annotation
- an abstract superclass does not have an equivalent method declared
- an interface implemented by the superclass has the method and
the annotation -> this should be found, but is not!
This happens because the try-catch block in #findAnnotation is too wide:
cl.getDeclaredMethod() can throw NoSuchMethodException and skip the
'#searchOnInterfaces' call prematurely.
The try-catch block was made narrower to allow #searchOnInterfaces to
be called even if the abstract class does not have the method declared
at all.
Issue: SPR-9342
Prior to this change, Spring's MethodParameter#getParameterAnnotations
called java.lang.Method#getParameterAnnotations on every invocation.
The latter ends up contending for a monitor inside (Sun) JDK code. This
is problematic when dealing with the high number of @RequestMapping
invocations that can occur in a Spring MVC @Controller.
This commit eliminates this contention by caching values returned by
java.lang.Method#getParameterAnnotations in a static ConcurrentMap.
Note that only Method parameter annotations are cached, while
Constructor parameter annotations are not. This is because the
issue of primary concern is, as mentioned above, @RequestMapping
methods. By nature, constructors are called much more infrequently, and
in most cases in a single-threaded fashion.
Issue: SPR-9298
Before this change there were numerous javadoc warnings being reported
while building Spring framework API.
This commit resolves most of the javadoc warnings, reducing the total
number from 265 to 103.
Issue: SPR-9113
Prior to this commit, MutablePropertySources#get(String) would throw
IndexArrayOutOfBoundsException if the named property source does not
actually exist. This is a violation of the PropertySource#get contract
as described in its Javadoc.
The implementation now correctly checks for the existence of the named
property source, returning null if non-existent and otherwise returning
the associated PropertySource.
Other changes
- Rename PropertySourcesTests => MutablePropertySourcesTests
- Polish MutablePropertySourcesTests for style, formatting
- Refactor MutablePropertySources for consistency
Issue: SPR-9179
Due to changes made in commit 2fa87a71 for SPR-9118,
AbstractResource#contentLength would fall into an infinite loop unless
the method were overridden by a subclass (which it is in the majority of
use cases).
This commit:
- fixes the infinite recursion by refactoring to a while loop
- asserts that the value returned from #getInputStream is not null in
order to avoid NullPointerException
- tests both of the above
- adds Javadoc to the Resource interface to clearly document that the
contract for any implementation is that #getInputStream must not
return null
Issue: SPR-9161
This renaming more intuitively expresses the relationship between
subprojects and the JAR artifacts they produce.
Tracking history across these renames is possible, but it requires
use of the --follow flag to `git log`, for example
$ git log spring-aop/src/main/java/org/springframework/aop/Advisor.java
will show history up until the renaming event, where
$ git log --follow spring-aop/src/main/java/org/springframework/aop/Advisor.java
will show history for all changes to the file, before and after the
renaming.
See http://chrisbeams.com/git-diff-across-renamed-directories
Philippe Marschall
Chris Beams
Stevo Slavic
Petr Janecek
Nikita Tovstoles
Sam Brannen
Rossen Stoyanchev