Java Cannot Instantiate Abstract Class Or Interface
How to clear all output cells and run all input cells What is role of palladium in hydrogenation reactions? Skip to main content area Products Solutions Services Resources Search Main menu ProductsJasperReports Server Jaspersoft Studio JasperReports Library Jaspersoft ETL Visualize.js Answers Exchange Docs Wiki Planet Tracker Jaspersoft.com Support Community Contact posted 6 years ago Angel, What constructors does that class have? Which means that this whole problem was due to missing cascade annotations. weblink
Cause Hibernate stuff: you define _abstract_ class and store it in a table,then each implementation of that class goes to linked table if the linked table row is missing Hibernate can't Also persist, delete, merge method are only in classA.. What is the most efficient & fastest way to speed up the installation of packages with thousands of items? This is because of @Entity annotation in an abstract class.
For example, if I am persisting an entirely new main CompensationCase, it works without a hitch. Code: @Repository("verbaleMtDao") public class VerbaleMtDaoJpa extends GenericDaoJpa
A class designated with the MappedSuperclass annotation can be mapped in the same way as an entity except that the mappings will apply only to its subclasses since no table exists But my db has a table for each abstract class.. For some reason it only happens when updating and existing CompensationCase and adding a new Compensation. In our class, we removed one subclass but we forget to migrate the data and remove the sub-table that is being mapped to the subclass.
So I have to handle the DAOs myself. Home Forum Spring Projects Data This forum is now a read-only archive. How could I work around this? my site If yes then there could be data in table for Compensation concrete type. 2.
when it is a member of another entity, it doesnt get persisted. However, the Compensation sub-class changed to include new properties which should be nullable. IMHO that doesn't make sense. please look into it ...
All rights reserved. that means some problem when it is a data member of campaign.. that means campaign is recognized from campaignInterface but adgroup is not.. Comment Cancel Post mserioli Member Join Date: May 2010 Posts: 60 #3 Jun 1st, 2011, 10:34 AM Thank you for your answer!
So you tell me that I have to remove the Entity annotation from abstract class.. have a peek at these guys Join them; it only takes a minute: Sign up org.hibernate.InstantiationException: Cannot instantiate abstract class or interface up vote 0 down vote favorite I have the following entity: @Entity @Table(name = "davt_compensation_service") when i add an adgroup to the list in campaign, campaign c; c.getAdGroupList().add(new AdGroups()), etc and save campaign it says"Cannot instantiate abstract class or interface :" AdGroupInterface its not recognizing the Thank you Marco Tags: None Marten Deinum Senior Member Join Date: Jun 2006 Posts: 13829 Marten Deinum Java Consultant / Pragmatist / Open Source Enthusiast / Author Pro Spring MVC: With
Only the "last table" of the hierarchy correspond a non abstract class.. Color substitution in a BufferedImage Are “la malplej juna” and “la plej maljuna” entirely interchangeable? About the kanji 鱈 Why are wavelengths shorter than visible light neglected by new telescopes?
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Browse other questions tagged java hibernate jpa inheritance or ask your own question. One incoming, one outgoing. Formula 1 rebus What is this line of counties voting for the Democratic party in the 2016 elections? US Election results 2016: What went wrong with prediction models?
One last question: Why do you use here a many-to-one instead of one-to-one? –Timo Oct 3 '11 at 17:02 Well , I could use a one-to-one but a many-to-one Map MailAccount with 2 one-to-one relationships to MailServer. A story behind a weird inductor Zener diodes in glass axial package - not inherently shielded from photoelectric effect? this content Posted by Aye Sandar Moe at 10:56 AM Email ThisBlogThis!Share to TwitterShare to FacebookShare to Pinterest Labels: data model, hibernate, object 2 comments: Meeral khaliqNovember 21, 2013 at 10:40 AMThis comment