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2.2.7

Release date: 2011-06-14 Download (5.13 MB) Binary:  objectdb-2.2.7.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

EntityManagerFactory Fails To Swtich Over To Slave When Master Is Unavailable

I have a simple task to validate the sample code will switch over to the slave database when the master is unavailable. I simulate the master unavailable by stopping the master server; which generates the following exception below. What am I doing wrong? It appears the connection manager fails to try the second URL in the list: objectdb://10.9.2.15:9998//10.9.2.15:9999/test.odb;user=admin;password=password Thank you in advance. ... Slightly modified code to view the exception message. package tutorial ;   import ...

 
release

2.2.8

Release date: 2011-07-03 Download (5.14 MB) Binary:  objectdb-2.2.8.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

explorer NullPointerException

I studied ObjectDB a few hours ago and got some problems when use explorer . I run it and right-click in 'Open local database' window,and the all the pop menu item is gray and disabled,such as ‘new database’,'new directory','cut','copy' ... if I click 'tools---oprions' before open database, the errot I got is: [2012-05-21 09:51:11 #1 explorer] java.lang.NullPointerException at com.objectdb.o.CNC.p(CNC.java:253) at com.objectdb.o.EHL.d(EHL.java:55) at com.objectdb.o.VPN.(VPN.java:60) at com.objectdb.o.OPD.(OPD.java:69) at com.objectdb.o.OPD.(OPD.java:42) ... above in fact. That is to say,the Explorer can view/create a database,edit content only. I said the right? ...

 
release

2.2.6

Release date: 2011-06-02 Download (5.13 MB) Binary:  objectdb-2.2.6.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Problem with distinct select, order by and equivalent alias/attribute path

Hi, while working with a (standard-)JPA-query generating framework we run into an exception when ordering the results of some projection when the order by expression is different (though logically equivalent) to the projection expression. Here is the example: ... Is the last (problematic) query invalid from your point of view? Thanks and regards Benjamin Klink ...

 
manual

Retrieving JPA Entity Objects

Explains how to use JPA to retrieve entity objects from the database.... fields are initialized. From the point of view of the developer it looks like the entire graph of objects is present in ...

 
release

2.2.5

Release date: 2011-05-20 Download (5.1 MB) Binary:  objectdb-2.2.5.zip You should start by following a  tutorial or reading the manual ...

 
forum_thread

Unable to persist TreeMap

import java.util.SortedMap; import java.util.TreeMap; import javax.persistence.Entity; //---------------- @Entity class Person { public SortedMap<String, String> memberships = new TreeMap<String, String>(); } //Person   #1 2013-06-04 14:44 import java. util . SortedMap ; import java. util . TreeMap ; import javax. persisten ...

 
forum_thread

How to use JOIN FETCH?

The ObjectDB manual (http://www.objectdb.com/java/jpa/query/jpql/from) gives an example of using JOIN FETCH to avoid excessive round trips to the database: ... going to be acceptable from a performance point of view. edit ...