db4o Developer Community

Hello! I'm doing some web services that use an embedded form of BD in db4o. When I make the request to a service any of the place, I create a static object ObjectServer for all services can use to access it, that is, the object instance in the form of BD Singleton. All services are functioning correctly if I go either locally or ...

Ok, either i've found a bug or something is eluding me regarding events. I'm working with 7.4 in java but had the same issue in 6.2...             ObjectServer objectServer = Db4o.openServer(IServerConfiguration.FILE, IServerConfiguration.PORT);        ObjectContainer ...

Hi, I have  a problem with isalive() method. When i killed the server, Isalive never return, and this exeptions throwing continually in the background when debugging in VS. i use db4o 7.2, and c# server:public static void Main(string[] args)  {  Console.WriteLine(''star'');  IExtObjectServer server = ...

I used db4o client/server features and added objects at the server end and committed them. When I try to get those objects in a client program using Native Queries the IList<> always returns 0 objects. Using Query by example I get the desired result.I know my query is right because I tested it on the server program and it works but somehow ...

Hi Db4o, I have problems with enums in a network database, c# environment, version Continues Build july 9th, 2008.     public enum GroupEnum { First, Second, Third }    public class Student2    {        public GroupEnum ...

Hi I just found out that db4o can't be started in client/server mode and grant access to a user if the configuration is configured to config.queries().evaluationMode(QueryEvaluationMode.SNAPSHOT);. This will result in the folowing exception. Exception in thread ''main'' com.db4o.foundation.NotImplementedException at ...

Thanks a lot Goran! I added the Diagnostic... Configuration configuration = Db4o.newConfiguration();configuration.diagnostic().addListener(new DiagnosticToConsole());...and noticed a reference to db4o-6.4.38.10595-npopt.jar was missing. Now it works well. Manuel

Just to share our findings: we used a descendent of System.ComponentModel.BindingList<T> to store lists of objects related to a parent object. I am not sure and maybe someone with some knowledge of the inner working of Db4o can confirm this assumption, but it seems like Db4o uses type information available on both the server and the client ...

Hi all  i have a remote server and i want to access it by it's IP address. my code is like thisObjectContainer db=Db4o.openClient(''192.168.0.10'',1212,''admin'',''123456''); unfortunately my program wait in that line for ever. i try to work with it in local server computer with host name ''localhost'' and everything is ...

Im trying to get the following solved with db4o 7.x (Client/Server) on .net 3.5: I have a an object, lets call it MasterData, with a List of relating objects, lets call this list Categories.All objects are saved on the server. MasterData, the List, all Categories ...Then I want to query for an MasterData object that contains the object ...