What would be the Datanucleus/JDO implementation to this: Suppose I have a POJO, `Hub` which represents a place/location: ```java class Hub { List<Schedule> schedules; } ``` And a `Schedule` class to

When persisting this model with datanucleus-mongodb @PersistenceCapable public class Room implements Serializable { @PrimaryKey @Persistent(valueStrategy= IdGeneratorStrategy.IDENTITY) private String

Hi everyone, I use JDOQL with Datanucleus 4 and Spanner as backend. I use Spanner as a backend for some time and it works mostly fine. But recently I hit a problem when there are too many OR statement

According to JDO Mapping Guide ( https://www.datanucleus.org/products/accessplatform_5_1/jdo/mapping.html#_defining_the_current_user ) , to support auditing @CreateUser, we could define an implementat

Hello, I am migrating from 2.x to 5.x and getting below exception during runtime, please advice how to fix this issue. datanucleus.query.resultSizeMethod of "COUNT" is only valid for use with JDOQL or

Currently unavailable due to change of ISP. Use downloadable docs from sourceforge. Hopefully back soon

Hi, I faced issues to use the SchemaTool with MySQL 8 failing to upgrade the schema or to recreate it from scratch, with the error "Index/candidate part #0". In a debug session of the SchemaTool, I ob

Hi, I'm facing some issue to use a fresh new mysql8 server. DN doesn't find the tables because of case sensitivity. Tables are created in lowercase while DN search for upper case. Debugging schema int

I would like to add the default value of a field to the database column definition, in order to have the SchemaTool generating it in the database. I tried like in the doc, but without success: <mappin

I'm evaluating DataNucleus as a JDO implementation vs a Hibernate JPA implementation. On of the big selling points that Hibernate provides is the Hibernate-Envers ( https://hibernate.org/orm/envers/ )

Hi, I'm trying to specify foreign-key names. This helps to reduce the effort on db schema comparison at the end of development, to prepare the schema upgrade script. Actually it works very well on mos

Hi, I'm looking again at how to segment data based on user "profile". An easy to understand concept is to imagine an organisation with subsidiaries, each having departments, departments organized in t

Hi, I'm testing datanucleus.TenantReadIds and receive a NullPointerException PersistenceNucleusContextImpl:getMultiTenancyReadIds line 1928 return new String[] {ec.getStringProperty(PropertyNames.PROP

Hi, When I update an attribute with the same value (let's say I replace with an equals value), this object is made dirty. Not a big deal, but a side effect is PreUpdate callbacks are triggered, and I

When mapping a column with java type String and using jdbcType="NVARCHAR" in the @Column annotation we receive an error that the type is not supported by our H2 datastore. We looked at the H2Adapter a

I'm trying to use datanucleus.TenantReadIds at the EntityManager level, setting this property entityManager.setProperty( PropertyNames. PROPERTY_MAPPING_TENANT_READ_IDS , tenant); As it doesn't seems

Hi, As you can see on other topics, I'm facing some difficulties with MultiTenancy in JPA. I haven't diagnose yet why settings are not applied but I translated the JDO TestCase to JPA. These tests doe

Hi, When removing an object, DN only uses TenantId, while it uses the tenant-read-ids when querying. // Tenants : John,Chris final Query query = entityManager.createQuery("select e from Element e ");

Hi, I'm using Dependency-Track ( https://github.com/DependencyTrack/dependency-track ) with PostgreSQL, which is built on DN. Dependency-Track recently switched from DN 5.2.2 to DN 5.2.6, making data

I've been reading through the docs for using native sequences for datastore-identities (https://www.datanucleus.org/products/accessplatform_5_0/jdo/mapping.html#valuegen_sequence). But from what I can