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Suggest link to Maven example from Enhancer tool page

> <executions> May I suggest you also link from there to the tutorial example: https://www.objectdb.com/tutorial

Undeploying Glassfish web application does not disconnect from ObjectDB

embedded mode? Apparently undeploying a web application from GlassFish doesn't close

NPE when reading map from DB

Greetings, this NPE happened in our app first time today while reading objects from DB. Could u please check what could be the issue ? Inner message: Cannot invoke "com.objectdb.o.ORS.YD()" because "<parameter1>" is null -------------------- com.objectdb.o.TYR.<init>(TYR.java:113) com

Query debugging configuration from class

Is there a way to show what queries are actually being executed from within a Java class? I'm getting the exception: Exception in thread "main" [ObjectDB 2.5.4_05] javax.persistence.NonUniqueResultException However, I'm unable to debug it because I don't know what the query's actually searching

Backup from explorer

Is it possible to make a backup from the explorer? jastorga Juan If the database is not in use you can use the File > Open dialog and then copy and paste on the database file (right click a database file to see the copy command). But a safe online backup (while the database is in use) is not supported. support Support

Delete class from DB - through Explorer

Hi! I was looking for ways to delete a class (entity/embedded) from a database through Explorer, but I couldn't find any. Is there any way for doing that? If not, why? The only way I see right now is to delete the whole db and make a new one, but that's not a good scenario

Null pointer exception being thrown from within ObjectDB.

<ReportDownloadObject> r = q.from(ReportDownloadObject.class);     q.select(r

Remove of an entry from a @OneToMany collection is not possible if the enhancer is disabled

Hello! When the JPA entities are not enhanced the removal of an entry from a @OneToMany collection is not possible. The following java code demonstrates the problem. The statement parentEntity.getChildEntityContainer().remove("01"); does not work correctly with not enhanced JPA entities

reading from table gives Unexpected exception

reading from table gives Unexpected exception [ObjectDB 2.6.3] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_131 (on Windows 10 10.0). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: null com.objectdb.o

Why does ObjectDB duplicate classes from javax.jdo:jdo-api?

should be removed from the objectdb.jar file. When ObjectDB 2.0 was released many years ago, one appealing

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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