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Provides support to increase developer productivity in Java when using Apache Cassandra. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

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We now consider the contextual ColumnType that applies when using particular update operations within the context of a property reference. Query and Update objects reference properties in their criteria/assignments using operators that are related either to the entire property, the key-, value- or component-type aspect (querying whether map contains a key, updating a list at an index).

Previously, we considered the contextual column type only for criteria operators and updating a list with a mapped UDT failed as the column type of the property was used. By using a ColumnTypeTransformer abstraction we resolve the correct contextual column type so that subsequent mapping/conversion operations use the appropriate type hint.
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README.adoc

Spring Data for Apache Cassandra Spring Data for Apache Cassandra

Spring Data for Apache Cassandra icon?job=spring data cassandra%2Fmaster&subject=Build Gitter

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.

The Apache Cassandra NoSQL Database offers many new capabilities for teams seeking a solution to handle high velocity, high volume and variable data flows. This new way of thinking introduces new concepts and a learning curve that can be intimidating to team members and team managers. Spring Data for Apache Cassandra offers a familiar interface to those who have used other Spring Data modules in the past.

The learning curve for developing applications with Apache Cassandra is significantly reduced when using Spring Data for Apache Cassandra. With the power to stay at a high level with annotated POJOs, or at a low level with high performance data ingestion capabilities, the Spring Data for Apache Cassandra templates are sure to meet every application need.

Features

  • Build repositories based on common Spring Data interfaces

  • Support for synchronous, reactive, and asynchronous data operations

  • Support for XML based Keyspace creation and CQL Table creation

  • JavaConfig and XML Support for all Cluster and Session Capabilities

  • Exception Translation to the familiar Spring DataAccessException hierarchy

  • Convenient QueryBuilders to eliminate the need to learn CQL

  • Automatic implementation of Repository interfaces including support for custom query methods

  • Based on the 3.x DataStax CQL Java Driver

Code of Conduct

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@pivotal.io.

Getting Started

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("Matthew");
    person.setLastname("Adams");
    repository.save(person);

    List<Person> lastNameResults = repository.findByLastname("Adams");
    List<Person> firstNameResults = repository.findByFirstnameLike("M*");
 }
}

@Configuration
@EnableCassandraRepositories
class ApplicationConfig extends AbstractCassandraConfiguration {

  @Override
  public String getContactPoints() {
    return "localhost";
  }

  @Override
  protected String getKeyspaceName() {
    return "springdata";
  }
}

Maven configuration

Add the Maven dependency:

<dependency>
  <groupId>org.springframework.data</groupId>
  <artifactId>spring-data-cassandra</artifactId>
  <version>${version}.RELEASE</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-cassandra</artifactId>
  <version>${version}.BUILD-SNAPSHOT</version>
</dependency>

<repository>
  <id>spring-libs-snapshot</id>
  <name>Spring Snapshot Repository</name>
  <url>https://repo.spring.io/libs-snapshot</url>
</repository>

Getting Help

Having trouble with Spring Data? We’d love to help!

Reporting Issues

Spring Data uses JIRA as issue tracking system to record bugs and feature requests. If you want to raise an issue, please follow the recommendations below:

  • Before you log a bug, please search the issue tracker to see if someone has already reported the problem.

  • If the issue doesn’t already exist, create a new issue.

  • 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.

  • If you need to paste code, or include a stack trace use JIRA {code}…{code} escapes before and after your text.

  • If possible try to create a test-case or project that replicates the issue. Attach a link to your code or a compressed file containing your code.

Building from Source

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 1.8.

 $ ./mvnw clean install

If you want to build with the regular mvn command, you will need Maven v3.5.0 or above.

Also see CONTRIBUTING.adoc if you wish to submit pull requests, and in particular please sign the Contributor’s Agreement before your first non-trivial change.

Initial Contributors

Spring Data for Apache Cassandra was initially created and supported by the following companies and individuals:

Building reference documentation

Building the documentation builds also the project without running tests.

 $ ./mvnw clean install -Pdistribute

The generated documentation is available from target/site/reference/html/index.html.

Examples

License

Spring Data for Apache Cassandra is Open Source software released under the Apache 2.0 license.

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Provides support to increase developer productivity in Java when using Apache Cassandra. Uses familiar Spring concepts such as a template classes for core API usage and lightweight repository style data access.

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