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Development teams often encounter errors with embedded databases if their test suite inadvertently attempts to recreate additional instances of the same database. This can happen quite easily if an XML configuration file or @Configuration class is responsible for creating an embedded database and the corresponding configuration is then reused across multiple testing scenarios within the same test suite (i.e., within the same JVM process) -- for example, integration tests against embedded databases whose ApplicationContext configuration only differs with regard to which bean definition profiles are active. The root cause of such errors is the fact that Spring's EmbeddedDatabaseFactory (used internally by both the <jdbc:embedded-database> XML namespace element and the EmbeddedDatabaseBuilder for Java Config) will set the name of the embedded database to "testdb" if not otherwise specified. For the case of <jdbc:embedded-database>, the embedded database is typically assigned a name equal to the bean's id. Thus, subsequent attempts to create an embedded database will not result in a new database. Instead, the same JDBC connection URL will be reused, and attempts to create a new embedded database will actually point to an existing embedded database created from the same configuration. This commit addresses this common issue by introducing support for generating unique names for embedded databases. This support can be enabled via: - EmbeddedDatabaseFactory.setGenerateUniqueDatabaseName() - EmbeddedDatabaseBuilder.generateUniqueName() - <jdbc:embedded-database generate-name="true" ... > Issue: SPR-8849
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.