The primary goal of the Spring Data project is to make it easier to build Spring-powered applications that use new data access technologies such as non-relational databases, map-reduce frameworks, and cloud based data services.
This module provides infrastructure components to build repository abstractions for stores dealing with Key/Value pairs and ships with a default java.util.Map based implementation.
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Infrastructure for building repositories on top of key/value implementations.
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java.util.function.Predicatebased query generation from query method names. -
Possibility to integrate custom repository code.
This project is governed by the Spring Code of Conduct. By participating, you are expected to uphold this code of conduct. Please report unacceptable behavior to spring-code-of-conduct@spring.io.
Here is a quick teaser of an application using Spring Data Repositories in Java:
public interface PersonRepository extends CrudRepository<Person, Long> {
List<Person> findByLastname(String lastname);
List<Person> findByFirstnameLike(String firstname);
}
@Service
public class MyService {
private final PersonRepository repository;
public MyService(PersonRepository repository) {
this.repository = repository;
}
public void doWork() {
repository.deleteAll();
Person person = new Person();
person.setFirstname("Oliver");
person.setLastname("Gierke");
repository.save(person);
List<Person> lastNameResults = repository.findByLastname("Gierke");
List<Person> firstNameResults = repository.findByFirstnameLike("Oli*");
}
}
@KeySpace("person")
class Person {
@Id String uuid;
String firstname;
String lastname;
// getters and setters omitted for brevity
}
@Configuration
@EnableMapRepositories("com.acme.repositories")
class AppConfig { … }Add the Maven dependency:
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-keyvalue</artifactId>
<version>${version}</version>
</dependency>If you’d rather like the latest snapshots of the upcoming major version, use our Maven snapshot repository and declare the appropriate dependency version.
<dependency>
<groupId>org.springframework.data</groupId>
<artifactId>spring-data-keyvalue</artifactId>
<version>${version}-SNAPSHOT</version>
</dependency>
<repository>
<id>spring-snapshot</id>
<name>Spring Snapshot Repository</name>
<url>https://repo.spring.io/snapshot</url>
</repository>Instructions for how to upgrade from earlier versions of Spring Data are provided on the project wiki. Follow the links in the release notes section to find the version that you want to upgrade to.
Having trouble with Spring Data? We’d love to help!
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Check the reference documentation, and Javadocs.
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Learn the Spring basics - Spring Data builds on Spring Framework, check the spring.io web-site for a wealth of reference documentation. If you are just starting out with Spring, try one of the guides.
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If you are upgrading, check out the GitHub releases and the release notes for “new and noteworthy” features.
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Report bugs with Spring Data KeyValue at GitHub Issues.
Spring Data uses GitHub as issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations below:
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Before you log a bug, please search the issue tracker to see if someone has already reported the problem.
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If the issue doesn’t already exist, create a new issue.
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Please provide as much information as possible with the issue report, we like to know the version of Spring Data that you are using and JVM version.
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If you need to paste code, or include a stack trace use Markdown ``` escapes before and after your text.
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Please create a test-case or project that replicates the issue. Attach a link to your code or a compressed file containing your code.
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Spring Data Examples contains example projects that explain specific features in more detail.
You don’t need to build from source to use Spring Data (binaries in repo.spring.io), but if you want to try out the latest and greatest, Spring Data can be easily built with the maven wrapper. You also need JDK 17 or above.
$ ./mvnw clean installIf you want to build with the regular mvn command, you will need Maven v3.9.0 or above.
Also see CONTRIBUTING.adoc if you wish to submit pull requests. All commits must include a Signed-off-by trailer at the end of each commit message to indicate that the contributor agrees to the Developer Certificate of Origin. For additional details, please refer to the blog post Hello DCO, Goodbye CLA: Simplifying Contributions to Spring.
Spring Data KeyValue is Open Source software released under the Apache 2.0 license.