About match


Package name for persisted entities

Hi, I have a question about package name and searching for entities. As for now we were using two different databases for two different parts of our system. But we want to make a 'common' model for both systems. After merging entities from two different projects, we get single jar with all entities. Unfortunately some of the names are the same for entities: - homplex.model.dbobject.Inspiration - pl.hplxtool.model.Inspiration ... this class. So my question is - is it possible to match entity name using full canonical name instead of only entity / class ...


Mismatch client-server protocol prefix

Hello! We migrated one of our legacy webservices to Spring Boot/Spring MVC. Now i have a strange problem. At first the app runs perfectly for a couple of hours. After that it stops working and I get the following exception: ... ) I checked multiple times if the versions match. They do. DB server version 2.6.2. Client version 2.6.2. Also there's ...


Paths and Types in JPQL and Criteria API

Explains how to use object expressions (path navigation, type) in JPA/JPQL. Instances of user defined persistable classes (entity classes, mapped super classes and embeddable classes) are represented in JPQL by the following types of expressions: Variables - FROM identification variables and SELECT re ...



Prints this throwable and its backtrace to the standard error stream.(Method of java.lang.Throwable)



Defines the values of the javax.persistence.lock.scope property for pessimistic locking.(Enum of JPA)


Step 1: Install BIRT and ObjectDB Driver

Explains how to install the BIRT and ObjectDB Eclipse features/plugins. We start by installing the BIRT development environment and the ObjectDB data source driver. Installing BIRT Choose one of the following options to install the BIRT development environment: Download and install the co ...


NullPointerException in ENH.g(ENH.java:401)

Hi, I experience a NullPointerException inside the objectdb code with the following stacktrace: ... corrupted after time or the internal structure does not match anymore. Unfortunately I cannot reproduce the error on request since I do ...


Exception in thread "ODB-StoreHandler-5094" java.lang.NullPointerException

Hi, ... information, as the line numbers in the stack trace do not match the most recent ObjectDB version.  ObjectDB ...


Problem with Criteria Querys

Hi, i am having problems running following code...   #1 2011-12-06 14:48 Hi, i am having problems running following code...   import java. util . *; ...


Locking in JPA

Explains how to use optimistic locking and pessimistic locking in JPA.... Page... is thrown if the version numbers do not match, indicating that the object has been modified by another user (using ...