ca66e076d1
This commit introduces first-class support for aliases for annotation
attributes. Specifically, this commit introduces a new @AliasFor
annotation that can be used to declare a pair of aliased attributes
within a single annotation or an alias from an attribute in a custom
composed annotation to an attribute in a meta-annotation.
To support @AliasFor within annotation instances, AnnotationUtils has
been overhauled to "synthesize" any annotations returned by "get" and
"find" searches. A SynthesizedAnnotation is an annotation that is
wrapped in a JDK dynamic proxy which provides run-time support for
@AliasFor semantics. SynthesizedAnnotationInvocationHandler is the
actual handler behind the proxy.
In addition, the contract for @AliasFor is fully validated, and an
AnnotationConfigurationException is thrown in case invalid
configuration is detected.
For example, @ContextConfiguration from the spring-test module is now
declared as follows:
public @interface ContextConfiguration {
@AliasFor(attribute = "locations")
String[] value() default {};
@AliasFor(attribute = "value")
String[] locations() default {};
// ...
}
The following annotations and their related support classes have been
modified to use @AliasFor.
- @ManagedResource
- @ContextConfiguration
- @ActiveProfiles
- @TestExecutionListeners
- @TestPropertySource
- @Sql
- @ControllerAdvice
- @RequestMapping
Similarly, support for AnnotationAttributes has been reworked to
support @AliasFor as well. This allows for fine-grained control over
exactly which attributes are overridden within an annotation hierarchy.
In fact, it is now possible to declare an alias for the 'value'
attribute of a meta-annotation.
For example, given the revised declaration of @ContextConfiguration
above, one can now develop a composed annotation with a custom
attribute override as follows.
@ContextConfiguration
public @interface MyTestConfig {
@AliasFor(
annotation = ContextConfiguration.class,
attribute = "locations"
)
String[] xmlFiles();
// ...
}
Consequently, the following are functionally equivalent.
- @MyTestConfig(xmlFiles = "test.xml")
- @ContextConfiguration("test.xml")
- @ContextConfiguration(locations = "test.xml").
Issue: SPR-11512, SPR-11513
|
||
|---|---|---|
| .settings/gradle | ||
| buildSrc/src/main | ||
| gradle | ||
| spring-aop/src | ||
| spring-aspects | ||
| spring-beans/src | ||
| spring-beans-groovy/src/main | ||
| spring-context | ||
| spring-context-support/src | ||
| spring-core/src | ||
| spring-expression | ||
| spring-framework-bom | ||
| spring-instrument/src | ||
| spring-instrument-tomcat/src | ||
| spring-jdbc/src | ||
| spring-jms/src | ||
| spring-messaging/src | ||
| spring-orm/src | ||
| spring-orm-hibernate4/src | ||
| spring-orm-hibernate5/src/main/java/org/springframework/orm/hibernate5 | ||
| spring-oxm | ||
| spring-test | ||
| spring-tx/src | ||
| spring-web/src | ||
| spring-webmvc/src | ||
| spring-webmvc-portlet/src | ||
| spring-webmvc-tiles2/src | ||
| spring-websocket/src | ||
| src | ||
| .gitignore | ||
| .mailmap | ||
| CONTRIBUTING-DOCUMENTATION.adoc | ||
| CONTRIBUTING.md | ||
| README.md | ||
| build.gradle | ||
| gradle.properties | ||
| gradlew | ||
| gradlew.bat | ||
| import-into-eclipse.bat | ||
| import-into-eclipse.sh | ||
| import-into-idea.md | ||
| settings.gradle | ||
README.md
Spring Framework
The Spring Framework provides a comprehensive programming and configuration model for modern Java-based enterprise applications -- on any kind of deployment platform. A key element of Spring is infrastructural support at the application level: Spring focuses on the "plumbing" of enterprise applications so that teams can focus on application-level business logic, without unnecessary ties to specific deployment environments.
The framework also serves as the foundation for Spring Integration, Spring Batch and the rest of the Spring family of projects. Browse the repositories under the Spring organization on GitHub for a full list.
Downloading Artifacts
See downloading Spring artifacts for Maven repository information. Unable to use Maven or other transitive dependency management tools? See building a distribution with dependencies.
Documentation
See the current Javadoc and reference docs.
Getting Support
Check out the spring tags on Stack Overflow. Commercial support is available too.
Issue Tracking
Report issues via the Spring Framework JIRA. Understand our issue management process by reading about the lifecycle of an issue. Think you've found a bug? Please consider submitting a reproduction project via the spring-framework-issues GitHub repository. The readme there provides simple step-by-step instructions.
Building from Source
The Spring Framework uses a Gradle-based build system. In the instructions
below, ./gradlew is invoked from the root of the source tree and serves as
a cross-platform, self-contained bootstrap mechanism for the build.
Prerequisites
Git and JDK 8 update 20 or later
Be sure that your JAVA_HOME environment variable points to the jdk1.8.0 folder
extracted from the JDK download.
Check out sources
git clone git@github.com:spring-projects/spring-framework.git
Import sources into your IDE
Run ./import-into-eclipse.sh or read import-into-idea.md as appropriate.
Note: Per the prerequisites above, ensure that you have JDK 8 configured properly in your IDE.
Install all spring-* jars into your local Maven cache
./gradlew install
Compile and test; build all jars, distribution zips, and docs
./gradlew build
... and discover more commands with ./gradlew tasks. See also the Gradle
build and release FAQ.
Contributing
Pull requests are welcome; see the contributor guidelines for details.
Staying in Touch
Follow @SpringCentral as well as @SpringFramework and its team members on Twitter. In-depth articles can be found at The Spring Blog, and releases are announced via our news feed.
License
The Spring Framework is released under version 2.0 of the Apache License.