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How to apply Unique constraints on embedded fields?

class A. Something like: @Entity @Unique(members={"b.c.values"}) @Entity public class ... you its working. but my requirement is something like this @Entity @Unique(members = { "b1.c.values

Automatic schema evolution causes ArrayOutOfBoundsException

Hi, I did 2 modification to our schema. Our schema looked like this: class Entity - List<String> permissions class ServiceProvider extends Entity - String name class Airline extends ... ServiceProvider and removed the duplicated name field, the schema now looks like this: class

Search through collection for value using index

I have an entity that contains a java collection of a Long id of user entities that can modify it (many users can modify it). I would like to be able to search for all entities that can be modified by a paticular user, since I will do this query often I would like to index it. How would I tell

JPA Query language support in OBjectDB / Sub query or nested Query

very well with the Hibernate/MySQL JPA. We are using Spring Data here. It looks like a problem with Sub query or nested queries where I am using IN clause like below. @Query("SELECT product FROM Product product

Should I use ObjectDB and JDO?

am looking for (to achieve MUCH faster database access). But, I have a few concerns. It looks like JDO ... > It looks like JDO is the preferred API for me (because ObjectDB FAQs lead me to believe

how explorer queries work

entities. (obviously the explorer must be doing something like this; correct me if i'm wrong ... , an untyped query: List result = em.createQuery(queryString).getResultList(); throws an exception like

Entity factory

Hi, is it possible to create Entities with a custom factory? I want to create Entity instances via dependency injection like: @Entiy public class User { private final UserService userService ... and add this listener via API call to ObjectDB (like . Is it possible to implement such a functionality

Object explorer cannot open odb file. ObjectDB many-to-many relationship

me: Is my above implementation alright for objectDB? I'd like to implement a many-to-many relationship so that User ... get an Assignement object from User object and Underlying object (but not through theirs keys). I'd like

Exception makes the system unusable for several minutes

that refreshing them causes the exception? support Support from messages like these in the log: [2020-07 ... twice and download the database hgzwicker Hans-Georg Zwicker It is very likely, according to the stack

log entry and massive performance issues

to our extranet and inform about), the ObjectNode.nodepath is like '/(EL)ANYNAME/(EX)F', you can find ... .nodepath is like '/(EL)ANYNAME/(EX)F', you can find a number of these objects linked to objects

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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