The executeUpdate method returns an integer which represents the number of records affected by the DML statements. Hibernate uses the version property in the WHERE clause of the executing UPDATE statement:Īll the INSERT, UPDATE and DELETE statements executed by Hibernate are done via the executeUpdate method of the JDBC PreparedStatement object. When fetching and modifying the Product entity: Hibernate will use the initial version value of 0 which is automatically assigned by the JVM since the version property is a primitive integer value. Notice the version property uses the JPA annotation which instructs Hibernate that this property will be used for the optimistic locking mechanism. Getters and setters omitted for brevity Let’s consider we have the following Product entity in our = "product") The most significant benefit of adding a version property to a JPA entity is that we can prevent the lost update anomaly, therefore ensuring that data integrity is not compromised. In this article, I’m going to show you how the JPA entity property works when using Hibernate. So, enjoy spending your time on the things you love rather than fixing performance issues in your production system on a Saturday night! Well, Hypersistence Optimizer is that tool!Īnd it works with Spring Boot, Spring Framework, Jakarta EE, Java EE, Quarkus, or Play Framework. Follow having a tool that can automatically detect JPA and Hibernate performance issues.
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