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Intro to Querydsl 1. Introduction This is an introductory article to get you up and running with the powerful Querydsl API for data persistence. The goal here is to give you the practical tools to add Querydsl into your project, understand the structure and purpose of the generated classes, and… Continue Reading intro-to-querydsl
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R2DBC – Reactive Relational Database Connectivity Persistence Spring 1. Overview In this tutorial, we’ll show how we can use R2DBC to perform database operations in a reactive way. In order to explore R2DBC, we’ll create a simple Spring WebFlux REST application that implements CRUD operations for a single entity, using… Continue Reading r2dbc-operations
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Introduction to Apache Cayenne ORM 1. Overview Apache Cayenne is an open-source library, distributed under the Apache license, providing features like a modeling tool, object-relational mapping aka ORM for local persistence operations and remoting services. In the following sections, we’ll see how to interact with a MySQL database using Apache… Continue Reading apache-cayenne-orm
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Quick Guide to MyBatis 1. Introduction MyBatis is an open source persistence framework which simplifies the implementation of database access in Java applications. It provides the support for custom SQL, stored procedures and different types of mapping relations. Simply put, it’s an alternative to JDBC and Hibernate. 2. Maven Dependencies… Continue Reading mybatis
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Using JDBI with Spring Boot 1. Introduction In a previous tutorial, we covered the basics of JDBI, an open-source library for relational database access that removes much of the boilerplate code related to direct JDBC usage. This time, we’ll see how we can use JDBI in a Spring Boot application.… Continue Reading spring-boot-jdbi
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A Guide to Cassandra with Java 1. Overview This tutorial is an introductory guide to the Apache Cassandra database using Java. You will find key concepts explained, along with a working example that covers the basic steps to connect to and start working with this NoSQL database from Java. 2.… Continue Reading cassandra-with-java
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Introduction to Reladomo 1. Overview Reladomo (formerly known as Mithra) is an object-relational mapping (ORM) framework for Java, developed at Goldman Sachs, currently released as an open-source project. The framework provides the features commonly needed from an ORM as well as some additional ones. Let’s see some of the key… Continue Reading reladomo
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Persisting DDD Aggregates 1. Overview In this tutorial, we’ll explore the possibilities of persisting DDD Aggregates using different technologies. 2. Introduction to Aggregates An aggregate is a group of business objects which always need to be consistent. Therefore, we save and update aggregates as a whole inside a transaction. Aggregate… Continue Reading spring-persisting-ddd-aggregates
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A Guide to the sql2o JDBC Wrapper 1. Introduction In this tutorial, we’re going to take a look at Sql2o, a small and fast library for relational database access in idiomatic Java. It is worth to mention that even though Sql2o works by mapping query results to POJOs (plain old… Continue Reading java-sql2o
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Spring Security: Exploring JDBC Authentication 1. Overview In this short tutorial, we’ll explore the capabilities offered by Spring to perform JDBC Authentication using an existing DataSource configuration. In our Authentication with a Database-backed UserDetailsService post, we analyzed one approach to achieve this, by implementing the UserDetailService interface ourselves. This time, we’ll… Continue Reading spring-security-jdbc-authentication
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