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tutorial

Step 4: Add a Servlet Class

Explains how to add a servlet that manages persistence using JPA and ObjectDB to an Eclipse Web Application. In this step we will add a servlet to manage guestbook web requests: Open the [Create Servlet] dialog box by right clicking the guest package node (in the [Package Explorer] window), selecting  New > Other... > Web > ...

 
forum_thread

Query in JPA2 with LEFT JOIN on INNER JOIN

select a.description, a.id, p1.description, p2.description,p3.description from action a left join action_profile ap1 on ap1.id_action=a.id inner join profile p1 on  ap1.id_profile=p1.id  and p1.name='?' left join action_profile ap2 on ap2.id_action=a.id inner join profile p2 on  ap2.id_profile=p2.id  and p2.name='?' where a.id =?;   Thanks   ... ) ; This is the query automatically generated by Hibernate when I run this piece of code.   ...

 
api-jdo

javax.jdo.spi.StateManager

This interface is the point of contact between managed instances of PersistenceCapable classes and the JDO implementation.(Interface of JDO)

 
forum_thread

Failed to read the value of field using reflection

I have recently encountered an issue with reading objects: #1 2015-07-01 12:03 I have recently encountered an issue with reading objects: Exception: com.objectdb.o.UserException Message: ...

 
tutorial

Step 4: Add a Servlet Class

Explains how to add a servlet that manages persistence using JPA and ObjectDB to a NetBeans Web Application. In this step we will add a servlet to manage guestbook web requests: Open the [New Servlet] dialog box by right clicking the guest package node (in the [Projects] window) and selecting New > Servlet ... Enter ...

 
release

2.0.2

Release date: 2010-11-13 Download (3.39 MB) Binary:  objectdb-2.0.2.zip ObjectDB 2 is already in use in production in several applications and is ...

 
forum_thread

Clarification on free license restrictions

Hello,   My apologies if the answer is already on the website, but I’m struggling to find a definitive answer.  The 10 entity class restriction is very clear, but can each of these classes use unrestricted numbers of embeddable classes?  Do embeddable classes count as part of the ten?  I assume not, but I need to check before I code further (and learn more about the product).   ... When attempting to persist my serializable user generated class of Patient, which contains an instance variable of class ...

 
release

2.0.4

Release date: 2011-01-11 Download (3.4 MB) Binary:  objectdb-2.0.4.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

InternalError on query of empty database

Hi, I have reasons for sometimes trying to query the database before anything has been created. The problem is the database throws a InternalException when that happens. Is it possible to throw something that identifies that that is the issue, say something like "MissingSchemaException", ie something that clearly shows its because no data of that type has been added? This just makes the exception catching cleaner. Thought thinking about it, it probably needs to be a JPA exception, maybe something like javax.persistence.EntityNotFoundException? ... [ObjectDB 2.2.8_06] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.6.0_20 (on Linux ...

 
forum_thread

ObjectDB within a resource adapter module and Java EE Connector Architecture

Has anybody managed to use ObjectDB in a resource adapter module in accordance with the Java EE Connector Architecture so that it may be packaged separately from (but used by components of) an EJB Module after the pattern of the classic EAR File structure as illustrated in the Java EE 7 tutorial in Figure 5-1 EAR File Structure ? #1 2016-11-19 11:19 Has anybody managed to use ObjectDB in a resource adapter module in accordance with the Java EE Connector Ar ...