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2.2.7

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2.3.7

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Consulting and Training

Our consulting and training team will be happy to assist you with on-site or remote consulting and training services. Consulting Facing a migration project? Performance issues with your current persistence architecture / framework? ...

 
forum_thread

Improvement in replication

Hi, I was thinking about some improvement in replication mechanism. Our application do only few writes (mostly reads), but those writes are important for us - objects rating, profile modifications. So in current implementation when master node dies, there is only a chance to read data from slave and all writes fails. ... is to choose master when both nodes are down and we start whole cluster. One of possible solution is to choose the one with higher ...

 
forum_thread

Extended mapping-definitions

The described feature is not available in any object-db I know, but possible with mapping to a relational DB, for example with Hibernate.   By default every entity of the real world (respectively its class) gets mapped to a java class. So cats get mapped to the java class 'Cat', dogs to 'Dog' and so on. In the project for which I'm evaluating objectDB, there 1.) will be hundreds of classes and 2.) not all classes are known at project start (an editor). ... of classes and 2.) not all classes are known at project start (an editor). To deal with especially the 2. limitation, the ...

 
forum_thread

Retrieving Metamodel without connection

Hello! I use Spring Data JPA. It uses the Metamodel to create repository beans. This triggers a connection to the ObjectDB server. It happens on every start of the Context. If it fails the application isn't available at all. I had the situations multiple times that my database server took longer to boot after a power outage than the tomcat machine. This leads to an unusable application until i restart tomcat. ... a connection to the ObjectDB server. It happens on every start of the Context. If it fails the application isn't available at all. I ...

 
forum_thread

"Rebuild Class Indexes" from the command line?

Hi, Is there a way to "Rebuild Class Indexes" from the command line? I have just added a new index and want to make sure the DBs with previously persisted entities have a BTree with all entities. http://www.objectdb.com/database/jdo/manual/chapter9 Thanks   #1 2015-01-14 00:18 Hi, Is there a way to "Rebuild Class Indexes" from the command line? I have just added a new inde ...

 
api-jdo

FetchPlan.maxFetchDepth

The depth of references to instantiate, starting with the root object.(Annotation Element of javax.jdo.annotations.FetchPlan)

 
forum_thread

ObjectDB's Database Doctor Incorrect Error Report

Am I reading this correctly?  It seems that Doctor is telling me that one of my objects is missing.  Looking at the database with ObjectDB's Database Explorer though seems to show that the reference to the object is good and that the object does indeed exist.   Output from Doctor Diagnose and Doctor Repair is attached.  So are the two databases and screenshots of Explorer showing the reference to the object and the existence of the object. #1 2016-08-13 16:33 Am I reading this correctly?  It seems that Doctor is telling me that one of my objects is missing.  Lo ...

 
forum_thread

Refresh data in application after database data has changed

Hi, I have a Java program that can manage and create some Person objects. When I start my application and I want to add a person with the same national number as a person already in the database, my program has to block the creation. ... that can manage and create some Person objects. When I start my application and I want to add a person with the same national number ...