Spring Data JPA Delete and Relationships
1. Overview In this tutorial, we’ll have a look at how deleting is done in Spring Data JPA. 2. Sample Entity As we know from the Spring […]
JAVA
Derived Query Methods in Spring Data JPA Repositories
1. Introduction For simple queries, it’s easy to derive what the query should be just by looking at the corresponding method name in our code. In […]
Spring Data – CrudRepository save() Method
1. Overview CrudRepository is a Spring Data interface for generic CRUD operations on a repository of a specific type. It provides several methods out of the box for […]
Spring Data JPA @Modifying Annotation
1. Introduction In this short tutorial, we’ll learn how to create update queries with the Spring Data JPA @Query annotation. We’ll achieve this by using the @Modifying annotation. First, we’ll […]
Spring Data JPA @Query
1. Overview Spring Data provides many ways to define a query that we can execute. One of these is the @Query annotation. In this tutorial, we’ll demonstrate how […]
Introduction to Spring Data JPA
1. Overview This tutorial will focus on introducing Spring Data JPA into a Spring project, and fully configuring the persistence layer. For a step by step introduction […]
A Guide to JPA with Spring
1. Overview This tutorial shows how to set up Spring with JPA, using Hibernate as a persistence provider. For a step-by-step introduction to setting up the […]
Quick Guide on Loading Initial Data with Spring Boot
1. Overview Spring Boot makes it really easy to manage our database changes in an easy way. If we leave the default configuration, it’ll search […]
Show Hibernate/JPA SQL Statements from Spring Boot
1. Overview Spring JDBC and JPA provide abstractions over native JDBC APIs, allowing developers to do away with native SQL queries. However, we often need to see those auto-generated […]
Simplify the DAO with Spring and Java Generics
1. Overview This article will focus on simplifying the DAO layer by using a single, generified Data Access Object for all entities in the system, which will […]
The DAO with JPA and Spring
1. Overview This article will show how to implement the DAO with Spring and JPA. For the core JPA configuration, see the article about JPA with Spring. 2. […]
The DAO with Spring and Hibernate
1. Overview This article will show how to implement the DAO with Spring and Hibernate. For the core Hibernate configuration, check out the previous Hibernate 5 with […]
JPA/Hibernate Persistence Context
1. Overview Persistence providers like Hibernate make use of persistence context to manage the entity lifecycle in an application. In this tutorial, we’ll start with […]
Programmatic Transaction Management in Spring
1. Overview Spring’s @Transactional annotation provides a nice declarative API to mark transactional boundaries. Behind the scenes, an aspect takes care of creating and maintaining transactions as […]
Transaction Propagation and Isolation in Spring @Transactional
1. Introduction In this tutorial, we’ll cover the @Transactional annotation, as well as its isolation and propagation settings. 2. What Is @Transactional? We can use @Transactional to wrap a method in a database transaction. […]
Transactions with Spring and JPA
1. Overview This tutorial will discuss the right way to configure Spring Transactions, how to use the @Transactional annotation, and common pitfalls. For a more in-depth discussion on […]
Configuring a DataSource Programmatically in Spring Boot
1. Overview Spring Boot uses an opinionated algorithm to scan for and configure a DataSource. This allows us to easily get a fully-configured DataSource implementation by default. In addition, […]
Bootstrapping Hibernate 5 with Spring
1. Overview In this article, we’ll discuss how to bootstrap Hibernate 5 with Spring, using both Java and XML configuration. This article focuses on Spring MVC. […]
Reading an HTTP Response Body as a String in Java
1. Introduction In this tutorial, we’ll explore several libraries for reading an HTTP response body as a string in Java. Since the first versions, Java […]
Spring RestTemplate Request/Response Logging
1. Overview In this tutorial, we’re going to learn how to implement efficient RestTemplate request/response logging. This is especially useful to debug exchange between two servers. Unfortunately, […]
