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multiple different applications access one odb file

Hi, is it possible to access one odb file from different applications? What we would like ... you should be able to use ObjectDB in embedded mode to access the same database file (because there is only one process). If your applications run in separate processes and need to access the same database

Recommendation - concurrent access multiple class v

that it might get corrupted because the manual says that we must not access ObjectDB with different versions ... , then finally all of them get the new version? So...basically...concurrent access with version x and version x+1 ... schema. ObjectDB servers usually do not have a direct access to your classes, so this is not a problem

Multi-thread access to single EM's entities

to access a single EM's managed entities, as long as only the thread that created the EM interacts ... it should work fine if you access persistent fields only from the synchronized get/set methods ... of your classes will replace every access of a persistent field (outside the constructor) with invocation

Using the wrong class to access a database

if I can access the database from here. This program is almost the same as the first; it only calls ... ; it now reports zero entries -> db is corrupted If it is an error to use the wrong class to access the db

Access entity version before commit transaction

containing the new version of the entity So I need to access the version of an updated entity inside ... .setTitle("New");             // here I need to access the new version, but I get still 1

NullPointer when accessing persistent field

) The code being called is accessing a map declared as follows; @OneToMany(cascade=CascadeType ... on accessing an inverse collection in an entity that has been garbage collected. Build 2.3.2_01 ... was being accessed. @OneToMany(cascade=CascadeType.ALL, mappedBy="z_aqera") @MapKey(name="z_registerId

Lazy retrieval by access not working correctly

I have a problem loading lazy associations by access/navigation with an @Embedded attribute containing an @ElementCollection which is lazy loaded. I'm not sure if the same problem exists ... is loaded if you view the map in the debugger, or if your application accesses keys and values in the map. support Support

java.lang.NullPointerException during access a field, only if the classes enhanced

We get the following exception during access a field (Set of entities) The error occurs only if the entities are enhanced. Caused by: com.objectdb.o.InternalException: Unexpected internal exception ... ': we first access this Set of entites, before we do some other stuff. (Changed Priority from high

Database access error , Doctor hanging on trying to repair, production shutdown at our biggest customer

-Georg Zwicker The database file was downloaded. You may want to block access to it now. support ... but if the database is already corrupted (and it may be hidden until your application tries to access

Server User List

The <users> configuration element lists the users that are allowed to access the ObjectDB Server ... " ip="" admin="true"> <dir path="/" permissions="access,modify,create,delete" /> </user> <user username="$default" password="$$$###"> <dir path="/$user/" permissions="access

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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