About relation

manual

Database Doctor

Explains how to use the ObjectDB object database Doctor tool to diagnose and repair database files and damaged Java/JPA/JDO objects. The ObjectDB Doctor tool provides two related services: Diagnosis and validation of an ObjectDB database file Checks a given ObjectDB database file, verifies that it is healthy and valid, and if the file is not valid (it is c ...

 
forum_thread

Debuging query before execution

Hi, Is is possible in any way to get string representation of a query right before execution, after setting parameters? Of course it's easy to print out query string when we build it by concatenating many strings, but even then we miss attributes. #1 2011-03-18 16:51 Hi, Is is possible in any way to get string representation of a query right before execution, after setti ...

 
api-jdo

compareTo(o)

Determine the ordering of identity objects.(Method of javax.jdo.identity.IntIdentity)

 
api-jdo

javax.jdo.annotations.Key

Annotation for the key of a map relation.(Annotation of JDO)

 
api-jdo

javax.jdo.identity.IntIdentity

This class is for identity with a single int field.(Class of JDO)

 
api-jdo

javax.jdo.annotations.Element

Annotation for the element of a collection/array relation.(Annotation of JDO)

 
forum_thread

Internal ObjectDB error by read the primary key

Sometimes we get the following exception, when we start our software.   #1 2016-02-18 08:31 Sometimes we get the following exception, when we start our software.   java.lang.NullPointerE ...

 
forum_thread

ClassCastException on closing PersistenceManager

Hi, I am using ObjectDB 2.6.3.b03 via JDO. Today I got the following exception while closing the PersistenceManager after reading the DB: #1 2015-10-14 13:53 Hi, I am using ObjectDB 2.6.3.b03 via JDO. Today I got the following exception while closing the Per ...

 
issue

Removing of an entity removes also another entity type

Hello, we have following case: ToleranceDefinition and ResolverMapping are entities and have not any relations each other. Before start transaction the ToleranceDefinition entities exist already in the database. Bug Version: Priority: Normal Status: Active Replies: 6 Type:  Bug ...

 
forum_thread

Does JPA have any configuration to create DDL's that are database specific

There some JPA classes who's names more that 30 character. This worked well in MySQL , Derby , PostgreSQL but when it was tried on oracle , we hit the constraint that oracle has of 30 characters.   So basically my question is that is there any JPA configuration to create DDL's that are specific to database   #1 2013-05-21 11:05 There some JPA classes who's names more that 30 character. This worked well in MySQL , Derby , PostgreSQL but ...