ByThorben JanssenHibernate provides 2 proprietary features that enable you to define additional filter criteria that Hibernate applies to every query that selects a specific entity class. This article will show you how to use the @FilterDef and @Filter annotations, which is the more flexible approach. You can activate and deactivate filter definitions for your current session…
ByThorben JanssenHibernate Envers is a popular library that automates the creation of an audit log. As I’ve shown in previous articles, it logs all write operations performed using your entity classes in an audit log and provides a flexible API to query data from that log. Based on these articles, I got recently asked if Hibernate…
ByThorben JanssenJPA and Hibernate make it very easy to model associations between entities. You can model associations between 2 concrete classes or model a polymorphic association to an inheritance hierarchy. These mappings are more than sufficient for almost all of your association mappings. But sometimes, you might want to model a polymorphic association to independent entity…
ByThorben JanssenOne of the common questions when analyzing a slow application is if there are any slow database queries. You can, of course, monitor these queries on your database. But then you still need to match them with a part of your Java code. And because there is no easy way to see what happened immediately…
ByThorben JanssenOptimizing the performance of your application is a complex and application-specific task. All domain models are different, and often enough, the amount of data managed by them also differs significantly between multiple installations. In addition to that, almost all performance tuning techniques have trade-offs, which don’t make them a great fit for all situations. Because…