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Tutorial
14

Step 2: Entity Class and Persistence Unit

the [Provider and Database] step just click Finish to generate a default persistence.xml file ... to replace the new source file content with the following code: package guest; import java.io ... file that was added to the project (under Configuration Files). Open the persistence.xml file in
Tutorial
14

Step 2: Entity Class and Persistence Unit

the project (under Java Resources: src > guest). Use copy and paste to replace the new source file ... /persistence.xml file: Open the [New Folder] dialog box, e.g. by right clicking the project node (in ... > File, enter persistence.xml as file name and click Finish. Verify that a new persistence.xml file
Tutorial
14

Step 2: Entity Class and Persistence Unit

: src/main/java > guest). Use copy and paste to replace the new source file content ... guests in the database. We also need to configure JPA by setting a META-INF/persistence.xml file ... the new META-INF folder in the [Project Explorer] window, select New > File, enter persistence.xml as
Manual
14

Obtaining a JPA Database Connection

to get an EntityManager instance. JPA requires the definition of a persistence unit in an XML file in order ... persistence unit in an XML file or you can simply provide the file path of the ObjectDB database ... , but when using ObjectDB, any valid database file path (absolute or relative) is also accepted. Any
Forum
14

Compress ODB file with XML content

after close ODB file. Does exist any compress data solution from ObjectDB side? ZIP is able to reduce ODB ... internally is not supported yet, but if you can upload a sample database file we can explore it and maybe ... database file. Most of the database space is used by field value in entity class LogVolatileEntityImpl
Issue
14

Database File Encryption

of data in database files is less commonly used, since it slows the database. In addition ... , we must encrypt certain data elements so that if someone got a hold of our DB file, were able ... using an encrypted file system, but you will pay a performance penalty.  This also means that the entire
Forum
14

Explorer doesn't open file

Explorer doesn't open file...see attached error message and odb.  Explorer doesn't cleanly close ... any issues and file works fine programmatically. It seems as an ObjectDB Explorer bug is handling ... the type of that field, e.g. to java.lang.Object, the file is opened in the Explorer? Yes, you're
Forum
14

_UserException: Attempt to open a database file '...' that is currently in use

while running the jar file in command line and I got this exception which I have it stack attached ... cannot be accessed at the same time by more than one process. Make sure that the database file
Forum
14

Best File system for objectdb

?     We have no such comparison data so we cannot recommend one file system over the other, but apparently the effect of the file system is expected to be small compared to other factors (disk speed, cache size, etc.) kadirbasol
Forum
14

Enhancer failure: Failed to process class file of type

Stack trace below:   [ObjectDB 2.7.1_02] Failed to process class file of type 'app.model.ClientSession' (error 422) com.objectdb.o.UserException: Failed to process class file of type 'app.model.ClientSession'         at com.objectdb.o.MSG.d(MSG.java:75)         at com.objectdb.o.JEL.A(JEL.java