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Optimization Question

. - If it's an update to an existing track, delete the entire previous entry and then add in the new ... objects whenever possible. Delaying the delete operations to time with less or no activity (and if you can use one transaction for deletion of many updates it can also improve performance

persistence.xml classes not respected by ObjectDB

and start all over. But that's a problem. I have discovered it when I had to delete and set the new database in production. It just didn't want to respect the restrictions. I had to delete the elements in ... do it. What is it to be done? zmirc Mircea Chirac <exclude-unlisted-classes/> will not delete classes

removed objects stay with null field values in the reference

is when we delete with a query use entityManager.remove hgzwicker Hans-Georg Zwicker You have to remove the object from the set explicitly, in addition to deleting it. However, if the set is defined as mapped by, it will be updated automatically after committing the delete operation and then reloading

Query fails with numerical values > 2^31

) delete from DataRecord p where p.TimeOfDeletion < 4147483648 This fails with "invalid numerical literal ... values of '1410521074995' are stored. So, it is possible to store this big numbers. But, why is my DELETE ... stacktrace: Exception in thread "Thread-2" [ObjectDB 2.5.6_05] DELETE FROM DataRecord c WHERE c

Activation license not picked up in Jenkins

.manager] Query "DELETE FROM common.app.Model e" => 1 results in 168 milliseconds. [2020-09-03 ... .7437 18.99/1.18 (a.deleted=false)> <extractPlan 3.7225 18.96/1.18 a(Site ... .Site a WHERE a.deleted=false" => 0 results in 71 milliseconds. [2020-09-03 22:03:34 #18 type

Database corrupted after schema change

{     private String oid;     private boolean deleted;     private Date modificationTS;     private ... ' 1. deleted => false 2. modificationTS => 2021-04-16 13:38:57 3. creationTS => 2021-04-16 13:38:03 ... entry 1 has unexpected field count (7 instead of 5) 0. oid => '559770' 1. deleted => false 2


Let's say I no longer need some entity in my project and after deleting all the objects ... found a description that the DB Explorer should be capable to delete classes? But it seems not ... of deleting classes in the Explorer. An obsolete class can be selected in the Schema / Managed Types

ArrayIndexOutOfBoundsException on flush

.java:722) ... 40 more The code at this point is performing a delete query for all entity objects ... ().begin(); try { Query query = em.createQuery("DELETE FROM ExecutionGraph g"); query.executeUpdate(); query = em.createQuery("DELETE FROM WorkflowInstance w"); query.executeUpdate

Allow removal of entity class from ObjectDB & Explorer

Hi. It would be very useful to be able to delete an entire entity class from ObjectDB ... adds support of deleting classes in the Explorer. An obsolete class can be selected in the Schema / Managed Types list and then deleted by using [Edit > Delete] from the menu bar or right click (context menu) and Delete. support Support

Cascade.ALL with LAZY fetchtype does not clean up all references on remove

with FetchType.LAZY. If I now delete a root entity using EntityManager.remove all leaf nodes will not be deleted. This only applies to the leaf nodes. If I add an additional the behaviour changes so that these new leafes will not be deleted. I created a small test case which can be downloaded at http

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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