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Dirty checking

to generate a Json object with a list of the Users which were Added, Deleted, and Changed. That is a simple ... classes. Next a request comes in which deletes a company. So we need to send a message to the relevant

InternalException when reading a HashMap

helped unfortunatelly. What helped was deleting the entity completely in explorer including all it's instances (deleting only instances did not helped) But that way we found, that another entities

OutofMemory error with Object DB 2.0

" password="admin"> <dir path="/" permissions="access,modify,create,delete" /> </user> <user ... ,delete"> <quota directories="5" files="20" disk-space="5mb" /> </dir> </user> <user

Is it ok to put list or map of embeddable objects in entity ?

>()) on an entity that had some Class_B instances in bList? Will they be deleted correctly from database ... previous content is automatically deleted. To see serialzable objects in the Explorer try to add

com.objectdb.o.UserException: Ambiguous entity name

remove this embeddable class without deleting my database or deleting the entity it was related

unable to connect to remote server using VPN

,create,delete" /> </user> <user username="$default" password="$$$###" ip=""> <dir path="/$user/" permissions="access,modify,create,delete"> <quota directories="5" files="20

Database Inconsistency or corruption

) It seems that all Attributes of the updated ObjectValue are just deleted from the database. If I had detailled traces of the EntityManager or of ObjectDB, I could identified when the delete operation is executed

File lock exception on odb$

and the os allowed us to delete the files in question without any problem. In this case we weren't ... at the time but we ended up deleting the odb$ to get the app started. I'll try to recreate the problem

NullPointer when accessing entity field

way: for single read/write/update/delete: - we create new EntityManager, do the operation in ... ,delete from ThreadLocal and close EM So I think there is now concurrent access on one EntityManager. In

Unexpected Exception (Error 990) with ArrayIndexOutOfBoundsException

Query queryDelete = em .createQuery("DELETE FROM EventLogPersistEntry p WHERE p.id ... to the ObjectDb. I did not delete the Database file during these changes. The system where that error occured

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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