About join

issue

Allow removal of entity class from ObjectDB & Explorer

Hi. It would be very useful to be able to delete an entire entity class from ObjectDB, but especially from Explorer. This is very useful for everyone, but also for clients that don't own a license, thus they're limited to 10 entities / db. During the life time of a software, many changes appear to its data structure. When an entity class becomes unnecessary, we should be able to remove it, thus to get space for another one. Feature Request Version: 2.5.2 Priority: High Status: Active Replies: 0 Type:  Feature Request ...

 
manual

WHERE clause (JPQL / Criteria API)

Explains how to use the WHERE clause in a JPQL query.... languages: SELECT c , l FROM Country c JOIN c . languages l WHERE c . population > :p AND l IN ...

 
issue

Database File Compression

ObjectDB database files are usually smaller than database files of other Database Management Systems (object and Relational) but still, an additional internal compression is possible. Usually smaller files are also faster because less I/O operations are required and memory cache can be used more efficiently. But compression and decompression consumes CPU time. Therefore, the effect of compression on Object databases is currently unknown. Feature Request Version: Priority: Normal Status: Active Replies: 0 Type:  Feature Request ...

 
forum_thread

Null enums and IS (NOT) NULL: NullPointerException

Hello. I'm getting NullPointerException when adding %enum field% IS (NOT) NULL or == (!=) NULL in WHERE clause. The same exception using CriteriaQuery. #1 2014-05-01 23:25 Hello. I'm getting NullPointerException when adding %enum field% IS (NOT) NULL or == (!=) NULL in WHE ...

 
issue

@FetchGroup in JPA similar to JDO

I was checking what's new in different JPA implementation on the market and found quite interesting two features. First of those features is described in this ticket. It's similar to FetchGroup from JDO. It works like this. First you specify attributes to fetch from database: Feature Request Version: Priority: Normal Status: Active Replies: 0 Type:  Feature Request ...

 
issue

Embedded Database Replication

As we all know, embedded databases out perform server databases on every occasion. The problem with embedded databases is that theyre difficult to scale. If I were to create an entire enterprise web application within a single jar file using embedded tomcat and embedded objectdb I would run into problems trying to cluster the data. It would be really useful if some kind of new external replicator application was created that can be used by server administrators to ensure replication is optimal and healthy. Feature Request Version: 2.6.1 Priority: Normal Status: Active Replies: 0 Type:  Feature Request ...

 
api-jpa

getModel()

Return the metamodel representation for the set attribute.(Method of javax.persistence.criteria.SetJoin)

 
issue

Email notification about new build

Just a quick thought. It would be nice to get email notification about new builds. If a new build resolves a problem that I'm not subscribed for, I don't know about it until i check ODB page :) Website Version: 2.4.4 Priority: Normal Status: Active Replies: 0 Type:  Website ...

 
api-jdo

Join.generateForeignKey

Generate or assume a foreign key constraint exists on the column or columns associated with this join.(Annotation Element of javax.jdo.annotations.Join)

 
issue

Explorer Features - refresh + viewing open embedded database

Request for feature: Ability to auto-refresh an explorer view, say at regular intervals of a few seconds. (at a minimum one ought to be able to manually refresh, for example the list of persistent types). additionally, it would be useful to be able to view an embedded database (read only mode) via the explorer. Feature Request Version: 2.2.2 Priority: High Status: Active Replies: 0 Type:  Feature Request ...