JPQL is a powerful query language that allows you to define database queries based on your entity model. Its structure and syntax are very similar to SQL. But there is an important difference that I want to point out before I walk you through the different parts of a JPQL query. JPQL uses the entity…
Hibernate Tips is a series of posts in which I describe a quick and easy solution for common Hibernate questions. If you have a question you like me to answer, please leave a comment below. Question: My DBA created a stored procedure which I need to call from my Java code. What’s the best way…
A lot of developers seem to have a love-hate relationship with JPA and Hibernate. They love it because it makes it easy to implement most use cases and they hate it because it also makes it easy to implement very inefficient queries. In the past, I was one of these developers myself. I liked to…
Last weeks Hibernate Tip triggered some discussions on twitter on how you should create your database schema. Is it a good approach to generate your table model based on your entity mappings or should you create it yourself? I think that both approaches are a good first step when you implement a new application. Yes,…
This post was originally published on sitepoint’s Java channel: 5 Reasons to Use JPA / Hibernate. Before we dive into the reasons to use JPA, let me quickly explain what it is. The Java Persistence API (JPA) is a specification for object-relational mapping in Java. As for most standards within the Java Community Process, it…