I have a hierarchy of persistent 'Event' type classes, the base class of which stores a timestamp of millisecond precision and the app can produce an audit trail that orders objects according to this

I use PrePersist, PreUpdate, ... callbacks to perform validation on object graphs. When an error is identified, the callback raise an exception ( instance of a sub-sub-class of RuntimeException). I ex

I have a JDO query that is caching its result set which makes sense as caching results sets is turned on by default. Part of the app adds a new object to the database (and I verify that the new record

When I try a standard code I get the following error message. javax.persistence.PersistenceException: Error encountered when extracting results for SQL query "get_person_list_sp" at org.datanucleus.ap

We have created a custom id generator class ABCDLongValueGenerator.java for id column plugin.xml <?xml version="1.0"?> <plugin id="abcd" name="DataNucleus plug-ins" provider-name="abcd"> <extension po

javax-jdo SequenceGenerator does not support for MariaDB http://www.datanucleus.org/products/accessplatform/jpa/mapping.html#valuegen_sequence But Maria db has support for sequences from 10.3 https://

After my misguided attempt to get some help on github I'm trying to do it correctly here (: I'm in the midst of setting up a JavaFX project with Datanucleu + JDO + JDOQL. I've got the first two parts

We've just migrated to version 5 and occasionally get the following warning: Query - >> Currently do not support adding restriction on discriminator for table=mytableA f0 to class MyClassB where: myta

Has anyone else seen this issue before? Everything has been working fine for all MySQL 5.x versions but after exporting the database as a SQL dump from 5.7 and importing the SQL dump into a new MySQL

Hi, When I use an attribute converter on an attribute, DN does not load the length validation attribute, keeping its default 255 value. (debug shows the length attribute is 255, probably not loaded) T

After updating of DataNuleus from version 3.3 to 5.2, I get the following error from the query, which limits the max. fetch depth. This Query works correctly with DataNucleus 3.3. java.lang.ArrayIndex

I am doing version upgrade of Datanucleus jars. Now, during compilation, I am getting below stacktrace in DataNucleus.log. (main) ERROR [DataNucleus.Enhancer] - Error thrown enhancing with ASMClassEnh

Hi everyone, I am implementing an RDBMS adapter for the GCP Spanner DB. I encounter a problem with transactions and metadata operations. Spanner DB supports information schema queries ( https://cloud.

I have seen rumours of Datanucleus running on Android. I assumed it would because of SQLite support, but this was a mistake. Before I switch to a different persistence method, is there any way that Da

I have used https://www.datanucleus.org/products/accessplatform/jdo/query.html#stored_procedures to build code but that did not work.

Hello all, I have defined a java class using the default attributes: @PersistenceCapable(detachable = "true") public class PropertyTemplate { ... private String description; ... } And stared using the

Hello, I am migrating from Datanucleus version 2.0.4 to 5.x. In 2.0.4 version, length for DB2, CLOB columns used to come as "1M" when schema gets created. Now, in 5.2.3, length for DB2, CLOB columns i

Hello, I am migrating from 2.x to 5.x and all my old code is around javax.jdo.spi.PersistenceCapable(types casting from object type etc). But now when I enhanced my classes using latest version, I can

Hi, Since I added optimistic locking, with a numeric version attribute, the deletion doesn't work. ERROR DataNucleus.Persistence - Object with id "1" in table I18N_MESSAGE has no version set on the ob

Hello, As part of migration from 2.x to 5.x, we are facing a error because the select statement is having ambiguous column name. Same code was working with previous version, looks like we have to chan