Hibernate HT_ Temporary Tables ON JOINED inheritance, Migration from Hibernate 3.4.0.GA To 5.1

java hibernate single-table-inheritance jpa-2.1
karelss picture karelss · Mar 23, 2016 · Viewed 11.2k times · Source

I'm trying to migrate an application from Hibernate 3.4.0.GA to Hibernate 5.1, and after complete the required changes on java code, when I deploy the application I'm watching how Hibernate is trying to create HT_ tables (global temporary), one for each @Inheritance annotated entity.

Searching on Google I've found why the tables are being created.

But in my case we are not allow to change de database to add new tables.

My Inheritance model only has one level of Inheritance and its simple, example

Does anyone knows any alternative representation for a hierarchical table structure that I can use to avoid the HT_ tables creation, or some Hibernate configuration to archive the same purpose?.

I can change the inheritance hierarchy on our entities or the Hibernate configuration. I can also asume an exception on deploy caused by the non creation of the tables if it´s non blocking for the rest of the deploy.

Thank you in advance.

UPDATE 1: New info from Hibernate official forum.

UPDATE 2: The Bug was fixed

UPDATE 3: A blog entry explaining different bulk Strategies related to the issue

Answer

karelss picture karelss · Mar 24, 2016

As in update one on this link is more info from Hibernate official forum with a possible solution.

UPDATE: Link with the solution

Related questions

Hibernate, single table inheritance and using field from superclass as discriminator column

I have following kinds of classes for hibernate entity hierarchy. I am trying to have two concrete sub classes Sub1Class and Sub2Class. They are separated by a discriminator column (field) that is defined in MappedSuperClass. There is a …

Read More
Hibernate: Parent/Child relationship in a single-table

I hardly see any pointer on the following problem related to Hibernate. This pertains to implementing inheritance using a single database table with a parent-child relationship to itself. For example: CREATE TABLE Employee ( empId BIGINT NOT NULL AUTO_INCREMENT, empName …

Read More
How to get the DiscriminatorValue at run time

We have the following classes @Entity @Inheritance(strategy = InheritanceType.SINGLE_TABLE) // optional annotation as this is default @DiscriminatorColumn(name = "apType", discriminatorType = DiscriminatorType.STRING, length = 255) @DiscriminatorValue("AP") public class ApplicationProcess { } And this @Entity @DiscriminatorValue("APS") public class ApplicationProcessScheme extends ApplicationProcess { } Now …

Read More