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55

Failed to generate dynamic type

Hi I was trying to enhance some of my classes and I got an error : Failed to generate dynamic type com.package.RootContainer (error 361) It seems that all dependent classes are on the classpath , so what is missing or how to recognize what is wrong with that class ?? thanks in advance b bolo
51

Failed to read DB file while online backup is running

) failed with an exception during an online backup of the same DB file was running and was close ... stacktrace (no inner exception is shown) and it is not related anymore to running of online backups. Maybe ... Build 2.6.2_05 changed only online backup code, but possibly other changes in previous recent builds
51

user defined backup target

Dear objectdb Team 1. I could not find a way, to declare the name of the backup-file (while running ... the database - file: Query backupQuery = em.createQuery("objectdb backup"); backupQuery.setParameter("target", new java.io.File("c:\\backup")); backupQuery.getSingleResult(); The code above, for instance
51

Incremental online backup

Hello, Are there plans for ObjectDB to handle incremental online backups, where a backup does not create a whole new copy of the DB, but "updates" an existing backup? This behavior would make backups ... to perform backups more often, several times a day, in order to always have a backup that's closer
10

JPA Queries

. "SELECT c FROM Country"). Criteria Query API Building dynamic queries with a structure that is known ... a cleaner alternative that enables building a dynamic query by using instances of special types ... instance. Building a dynamic query using the criteria API is managed by the CriteriaQuery interface
10

JPA Criteria API Queries

for building dynamic queries whose exact structure is only known at runtime. JPA Criteria API vs JPQL ... .g. as named queries) may be preferred. For dynamic queries that are built at runtime - the criteria API may be preferred. For example, building a dynamic query based on fields that a user fills
10

Database Replication and Clustering

Replication enables maintaining up to date version of an ObjectDB database on multiple nodes.
10

Online Backup degrades responsiveness.

days: try { CoreService.getLogger(this).info("DB Backup Start..."); TypedQuery<Thread> backupQuery =                 em.createQuery("objectdb backup", Thread.class ... (); CoreService.getLogger(this).info("DBService Backup DONE!"); } finally
9

user defined backup file

We need a way to do a (online) backup to a user defined backup-destination. Maybe in that way: backupQuery.setParameter("targetfile", new java.io.File("/User/Backup/test.objectdb")); which should create a backupfile with the name 'test.objectdb" in the directory '/User/Backup/' or backupQuery
2

Step 1: Create a Java EE 6 Web Project

We start by creating a new Java EE dynamic web project in Eclipse: Open the [New Project] dialog box, e.g. by using File > New > Project... Select Web > Dynamic Web Project and click Next. Choose ... 6 dynamic web project. To add ObjectDB/JPA support to the project, drag the objectdb.jar file from

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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