About projection

tutorial

Step 3: Add a Main Class

Explains how to add the JPA tutorial Main class in NetBeans. In this step we will add code to the Main class (that was generated with the project) in order to store Point objects in the database and then retrieve them from the database. Use copy and paste to replace the content of the Main cl ...

 
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How to install ObjectDB on my Amazon EC2?

Hi I just created an Amazon EC2 account and I want to build project based on Java/JPA and OpenDB. I searched the web but didn't find any proper tutorials. I appreciate if you help me with a guide. Thanks.  #1 2014-02-23 12:15 Hi I just created an Amazon EC2 account and I want to build project based on Java/JPA and ObjectDB. I sea ...

 
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Stalling on "run File" in Netbeans when using -javaagent:lib/objectdb.jar

This is not a question to ObjectDB support, it is a discussion item for ObjectDB users who use Netbeans IDE. I am encountering the following problem when using enhancement with Netbeans IDE 7.1. To enable enhancement I use the following in the Project Properties dialog Run section under VM Options: -javaagent:lib/objectdb.jar where there is a lib folder under the main project folder. This works fine for a Netbeans Web Application (that runs in Glassfish as web application container). #1 2012-03-15 06:51 This is not a question to ObjectDB support, it is a discussion item for ObjectDB users who use Netbeans IDE. ...

 
tutorial

Step 3: Add a Main Class

Explains how to add the JPA tutorial Main class in Eclipse. In this step we will add a main class to the project with code that will store Point objects in the database and then retrieve them from the database: Open the [New Java Class] dialog box by right clicking the tutorial package node ...

 
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Changes in detach behaviour?

Hello! Today i upgraded to 2.3.5_04. My program stopped working. After some debugging i found out that all fields of retrieved objects are on their default value till i first call a getter or detach them explicitly. Up to 2.3.4 they where initialized immediately. The problem in my case is that i have a Spring DAO. It does the following: I call for example getUserByName("blub). #1 2011-12-28 10:31 Hello! Today i upgraded to 2.3.5_04. My program stopped working. After some debugging i found out that al ...

 
issue

com.objectdb.o.InternalException: java.lang.ArrayIndexOutOfBoundsException: null:

The following error appears under and extended persistence context, and with creation, configuration and wiring code that is known to work perfectly with EclipseLink+Glassfish: SEVERE: Unexpected internal exception Bug Version: 2.3.6 Priority: Critical Status: Fixed Replies: 3 Type:  Bug ...

 
forum_thread

Annotations not supported in -source1.3 (use -source 5 or higher ..)

objectdb-2.2.5_03 Netbeans IDE6.9.1 java version "1.6.0_24": as user running Netbeans java version "1.5.0_28": as su running maven mvn Maven version: 2.0.8 Firstly, I followed the instructions to build the points example from Maven, but on opening it in Netbeans 6.9.1 I got an error in Points.java and other files: Annotations not supported in -source1.3 (use -source 5 or higher ..) Generics not supported in -source1.3 (use -source 5 or higher ..) #1 2011-05-31 00:17 objectdb-2.2.5_03 Netbeans IDE6.9.1 java version "1.6.0_24": as user running Netbeans jav ...

 
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Testimonials

Hi, I am new to object databases and looking for a product. We are creating a software system for the health care. Stability and robustness are of high importance to us. I think that ObjectDB is production ready but are there any testimonials or project references? Thanks a lot #1 2012-12-31 15:53 Hi, I am new to object databases and looking for a product. We are creating a software system for the hea ...

 
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Eclipse/JPA database tutorial

Hello Sir/Madam, I followed all the steps correctly as given in the tutorial. But when i run it , I'm getting an error saying, the resource not available. Please help regarding the issue as soon as possible. Thank you. #1 2012-09-16 07:20 Hello Sir/Madam, I followed all the steps correctly as given in the tutorial. But when i run it , ...

 
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Dirty checking

Hi, wondering if anyone knows the best way to detect which objects have been changed in the database. ie: which objects, and which collections of objects, have been dirtied.     ... loads a view from the database. 2) Each view is a 'projection', or 'lens', or 'reactive' view over one or more ... or a group leader, etc. Now that table is a projection/lens/reactive-query over a subset of the Company and User entity ...