About Explorer

forum_thread

com.objectdb.o.UserException: Failed to generate dynamic type

Hi, I am trying to open a DB and I get the following error:   ... The Doctor, the Server and the Explorer usually work with no access to your classes, but you may also run them ... See the Server , Explorer and Doctor documentation regarding how to run them as Java ...

 
forum_thread

ClassCastException on SELECT NEW ... after UPDATE over Java RMI

Hi, we are using ObjectDB 2.5.4_04 on Linux. Our application, which uses ObjectDb as a DB, exposes a Java RMI interface which allows remote RMI clients to run JPQL queries on the DB. The application internally runs SELECT NEW ... queries. For example: ... The same exception is thrown by your DB Explorer tool when trying the same, or similar, SELECT NEW ... query: ... SELECT NEW ... queries both in the application and with DB Explorer. 2. Then we run the following update query from the remote ... after this update both in the application and with DB Explorer. As a matter of fact any update causes the problem. The above is just ...

 
forum_thread

Missing Data on Retrieval (0, null values)

I try  to export all Objects in an Flatfile-Hiearchy (.csv). But only the first exported Table contains all necessary Data. Most of the others  contains all  Object-Rows', but most Values of the Columns are missing. With a  em.clear() inside the Loop, all tables are exported correctly but the Enity-Keys do not match. I can't get the point - what am i doing wrong?   emf = Persistence.createEntityManagerFactory(dbFile); em = emf.createEntityManager(); ... The result should be the same as the tables in (ObjectDB) Explorer.         ...

 
manual

ObjectDB 1.0 Manual

... database server. Chapter 9 - ObjectDB Explorer Explains how to view and manipulate database files in the database explorer. Prerequisite Knowledge A prior knowledge of ...

 
forum_thread

performance limit

Hi, can someone share expirience with performance limits of ObjectDB especialy when quering tables with large records sets. Our issue is with tables with 100.000+ records. Everything was OK when we had few thousand records. We have a simple SELECT statement which selects from a table with 100.000+ records by UserID atribute, tables have from 5 to 20 atributes. Usualy the results range from few hundred to few thousand records. This query takes up to 12 seconds. Is this normal, what when we will have few milion records, how to handle this. ... that indexes are not used. Runing the query in ObjectDB explorer clearly marks tha index on atribute createdBy is used. Can you ... you may notice that the same query runs much faster in the Explorer (because in the Explorer result data is always loaded lazily). You may ...

 
tutorial

Step 7: Run the Spring Web App

Shows how to run the NetBeans Spring MVC JPA web application.... the Tomcat server and open the database file in ObjectDB Explorer : To enable on the fly enhancement (weaving) in Tomcat: ...

 
page

Draft Book Pages

Database Explorer ...

 
release

2.0.5

... of instances of non enhanced classes. Added Explorer support of ID / version / inverse (mapped by) fields. Fixed Explorer bug in closing database files. Fixed cascading through ...

 
release

2.0.3

... of instances of non enhanced classes. Added Explorer support of ID / version / inverse (mapped by) fields. Fixed Explorer bug in closing database files. Fixed cascading through ...

 
tutorial

Step 4: Run the Application

Running ObjectDB/JPA tutorial in the NetBeans IDE.... of the database file by opening it in the ObjectDB Explorer : This is the end of the tutorial. Learn more ...