Bag is an unordered collection that permits duplicate elements. Let’s edit the Student class from our previous post in which a Set property was configured. We’ll use the same class but we’ll replace the set with Bag. Java doesn’t have the...

It’s a common requirement to configure value-type collections in the entity. In this post I’ll walk you through the steps for configuring the Set of value-type collection. We know Set doesn’t allow duplicate entries so it will be interesting to see...

In persistent units we often face a scenario where we think of grouping few similar properties and creating separate persistent entity for them would be expensive. For such situation creating embedded components for grouping such properties makes more sense. The life...

Let’s start by adding the dependency for c3p0 in our application’s pom.xml. <dependency> <groupId>org.hibernate</groupId>...

In order to use annotations for mapping in Hibernate we need to annotate our persistent classes. We’ll be replacing the XML mapping configuration with annotations. Let’s reuse the code we have already done in this post. We’ll remove the...