In the previous tutorials part 1 and part 2 about the @GeneratedValue annotation in JPA, I mentioned the allocationSize attribute when using the GenerationType.TABLE and GenerationType.SEQUENCE strategies. Notice that they are not detailed enough for you to understand the allocationSize attribute, so I added this article… Read More
This tutorial is continued part 1. The next strategy we want to talk is the GenerationType.SEQUENCE strategy You declare this strategy in the Clazz entity as follows:
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@Id @GeneratedValue(strategy = GenerationType.SEQUENCE) private Long id; |
Similar to GenerationType.TABLE strategy, GenerationType.SEQUENCE strategy also depends on the value of “hibernate.id.new.generator_mappings” property in the JPA… Read More
When defining a primary key of a table in the database, we usually add AUTO_INCREMENT. With this definition, we do not need to care about the value of the primary key column every time we add a new data to the table, which will be… Read More
