JPA 2 | Fetch Joins and whether we should use them

Introduction Recently I have been working with FETCH JOINS in JPA 2 to fetch the data eagerly from the Database…

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Spring Data JPA Tutorial Part One: Configuration

Spring Data JPA is a project which aims both to simplify the creation of JPA based repositories and to reduce…

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How to use Reflection to Document your Data Model based on JPA Annotations

So using JPA, Hiber­nate or EBeans is cool when you can just anno­tate your Java classes, but haven’t you always…

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JPA 2 | Dynamic Queries Vs Named Queries

JPA has its own Query language called JPQL. JPQL is very similar to SQL, with one major difference being that…

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JPA 2 | EntityManagers, Transactions and everything around it

Introduction One of the most confusing and unclear thing for me, as a Java Developer has been the mystery surrounding the Transaction…

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Mapping enums done right with @Convert in JPA 2.1

If you ever worked with Java enums in JPA you are definitely aware of their limitations and traps. Using enum…

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Spring JPA Data + Hibernate + MySQL + Maven

Development of web-applications with the help of Spring MVC implies creation of several logical layers of architecture. One of the…

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JPA – Querydsl Projections

In my last post: JPA – Basic Projections – I’ve mentioned about two basic possibilities of building JPA Projections. This…

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JPA – Should I become a laziness extremist?

When you spoke with the Developers about mapping objects to relational databases, they very often complain about poor JPA performance,…

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