About Java

api-jpa

javax.persistence.EntityManager

Interface used to interact with the persistence context.(Interface of JPA)

 
release

2.7.3

... Version 2.7.2 Added initial support for Java 9 . Attempt to fix (currently a workaround) and log the ... return type. Fixed a bug in using java.lang.Enum  as a field/property type (and not a specific enum type). ...

 
release

2.7.3_01

... Version 2.7.2 Added initial support for Java 9 . Attempt to fix (currently a workaround) and log the ... return type. Fixed a bug in using java.lang.Enum  as a field/property type (and not a specific enum type). ...

 
manual

Locking in JPA

Explains how to use optimistic locking and pessimistic locking in JPA. JPA 2 supports both optimistic locking and pessimistic locking . Locking is essential to avoid update collisions resulting from simultaneous updates to the same data by two concurrent users. Locking in ObjectDB (and in JPA) is always at the da ...

 
issue

Unexpected Exception during commit

I'm testing code that otherwise has been working with a clean database. I have seen several examples of the following exception. It never seems to happen in the same place twice, though. If you can give me a hint as to what would internally cause this, I'll try to reproduce it. Carl   ... 613) at com.objectdb.jpa.EMImpl.commit(EMImpl.java:277) at ... at ... at ... at ... at ... at ... at ... at ... at ... at ... at ... at ... at ... at ... at java.lang.Thread.run(Thread.java:662) Caused by: ...

 
release

2.7.2

... Version 2.7.2 Added initial support for Java 9 . Attempt to fix (currently a workaround) and log the ... return type. Fixed a bug in using java.lang.Enum  as a field/property type (and not a specific enum type). ...

 
manual

[ODB1] Chapter 9 - ObjectDB Explorer

Explains how to view and manipulate database files in the database explorer. ... 9.1  Running the Explorer The Explorer is a pure Java GUI application. It is shipped as an executable jar that will run on any system with a Java 1.3 JRE or later installed. A Windows EXE (explorer.exe) and a Unix shell ...

 
manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually.... run it from the command line as follows: > java -jar explorer.jar If explorer.jar is not in the current ...

 
manual

Database Explorer

Explains how to run and use the ObjectDB object database Explorer to view and manage Java/JPA/JDO objects visually.... run it from the command line as follows: > java -jar explorer.jar If explorer.jar is not in the current ...

 
release

2.3.5

... parameter. Adjusted the Enhancer to the new Java 7 class file format. Improved error message for invalid ... Fixed pom.xml files in the Maven tutorials to use Java 1.5 / 1.6. Version 2.2.5 Added support of ...