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Eclipselink and update trigger on multiple access to the database


Eclipselink and update trigger on multiple access to the database

By : Wassim HABBOUB
Date : January 10 2021, 01:47 PM


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How to access multiple tenants in eclipselink?

How to access multiple tenants in eclipselink?


By : WDL
Date : March 29 2020, 07:55 AM
Any of those help EclipseLink has an open feature request to allow a better way of allowing an admin server to access multi tenant data: https://bugs.eclipse.org/bugs/show_bug.cgi?id=355458 - vote for it if it is important to you.
The way around it would be to create a separate persistence unit for your admin console. One way to go about this would be to move the multitenant metadata to an EclipseLink orm.xml file, and use it in your tenant persitence units, while the admin persistence unit just use the entity classes. You might want a field in the entities that can be mapped to the tenant column that the admin console could use and query against, but be read-only or inaccessible to the tenant specific persistence units.
Access to Derby database from another project using EclipseLink

Access to Derby database from another project using EclipseLink


By : user2947128
Date : March 29 2020, 07:55 AM
I'm trying to update 2 fields in multiple tables in my database using a trigger after inserting a new row

I'm trying to update 2 fields in multiple tables in my database using a trigger after inserting a new row


By : anonymous
Date : March 29 2020, 07:55 AM
Hope that helps There are several issues with your trigger code.
1) The purpose of this part of the code is unclear :
code :
BEGIN
    SELECT fillHist_station FROM DUAL;
END;
CREATE OR REPLACE TRIGGER tr_update_solde_nbreserv
AFTER INSERT ON RESERVATION
FOR EACH ROW
BEGIN 
    UPDATE CLIENTS
    SET NB_RESERV = NB_RESERV+1 , SOLDE = SOLDE+1
    WHERE numc = :new.numc; 
END tr_update_solde_nbreserv;
/
How update the database using a web service and EclipseLink as JPA provider?

How update the database using a web service and EclipseLink as JPA provider?


By : Petr Svobodnik
Date : March 29 2020, 07:55 AM
Accessing multiple database from a Java web application using JPA/EclipseLink/EJB

Accessing multiple database from a Java web application using JPA/EclipseLink/EJB


By : David Rodriguez
Date : March 29 2020, 07:55 AM
Does that help We faced the same use case and ended up creating multiple persistence-unit and building an entity manager factory which returns the correct entity manager according to an parameter sent by the client (as an enum in our case, Environment). Then, instead of injecting the persistence context in the clients, we inject this factory and call getEntityManager(environment).
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