Introduction to Spring Data Examples
The Spring Data Examples repository is a collection of sample projects designed to demonstrate the capabilities of various Spring Data modules. This repository serves as an educational resource for developers who wish to learn how to leverage Spring Data to interact with a variety of data stores, from SQL and NoSQL databases to more specialized data solutions. The repository is organized into directories, each corresponding to a specific Spring Data module.
Spring Data for Apache Cassandra
This module provides examples of how to use Spring Data with Apache Cassandra. There are projects showing basic support, integration with Kotlin, and how to use reactive templates and repositories with Cassandra.
Spring Data Elasticsearch
Examples in this module demonstrate functionalities such as basic text search, geo-spatial search, and facet use with Elasticsearch. Reactive client capabilities are also showcased, necessitating a locally running Elasticsearch instance for testing purposes.
Spring Data JDBC
Spring Data JDBC examples cover basic uses, GraalVM native image compilation, custom ID generation techniques, interaction with jMolecules, integration with jOOQ and MyBatis, and single-query loading techniques.
Spring Data JPA
The JPA examples provide insights into integrating Spring Data with technologies like EclipseLink and jMolecules. The projects cover topics ranging from basic usage, multi-data-source scenarios, query-by-example strategies, and integration with Spring Security. There is also support for virtual threads and JPA 2.1 features.
Spring Data LDAP
This section demonstrates how to use Spring Data repositories to manage an LDAP store effectively, simplifying directory management operations.
Spring Data MongoDB
The MongoDB module is extensive, with examples showcasing aggregation frameworks, repository functionalities, Querydsl integration, and more. Users can also explore the use of the MongoDB fluent API, support for GeoJSON, gridFS usage, and integration with both Kotlin and jMolecules.
Spring Data Neo4j
This module provides an example focusing on basic node and relationship management in Neo4j, accompanied by repository usage guidance.
Spring Data R2DBC
R2DBC examples illustrate the reactive usage of relational databases, catering to the needs of asynchronous data interaction.
Spring Data Redis
Redis examples cover a wide range of capabilities, including basic setup, cluster and sentinel support, usage of streams, and Pub/Sub patterns using virtual threads. Local Redis instances are required for testing these examples.
Spring Data REST
This section features RESTful service examples using Spring Data technologies. It includes projects demonstrating HTTP header usage, multi-store services combining JPA and MongoDB, and security implemented through Spring Security.
Spring Data Web Support
Web integration examples cover JSONPath and XPath expressions, Querydsl web integration, and binding of Pageable instances to MVC controller methods.
Miscellaneous
Miscellaneous examples illustrate the use of the Spring Data release train BOM without Spring Boot, repositories backed by Maps, and multi-store scenarios using MongoDB and JPA in one project.
Additional Notes
- These projects utilize the Lombok plugin for simplified Java coding. Developers need to install Lombok separately in their IDE.
- The code requires Java 16 or newer to run and compile.
- Some database modules use Testcontainers or embedded databases for testing.
This comprehensive set of examples provides practical insights into using Spring Data across various data models, ensuring developers can effectively apply these techniques in real-world applications.