About delete

1-10 of 200Refresh
Manual
351

DELETE Queries in JPA/JPQL

As explained in chapter 2, entity objects can be deleted from the database by: Retrieving ... . Applying changes to the database by calling the commit method. JPQL DELETE queries provide an alternative way for deleting entity objects. Unlike SELECT queries, which are used to retrieve data from
Manual
337

Deleting JPA Entity Objects

Existing entity objects can be deleted from the database either explicitly by invoking the remove method or implicitly as a result of a cascade operation. Explicit Remove In order to delete an object ... transaction, it can be deleted using the remove method: Employee employee = em.find(Employee.class, 1
JDO Doc
94

InstanceLifecycleEvent.DELETE

Static Field javax.jdo.listener.InstanceLifecycleEvent int DELETE Since: JDO 2.0
JDO Doc
94

ObjectState.PERSISTENT_DELETED

Enum Constant javax.jdo.ObjectState PERSISTENT_DELETED Since: JDO 1.0
JDO Doc
94

ObjectState.PERSISTENT_NEW_DELETED

Enum Constant javax.jdo.ObjectState PERSISTENT_NEW_DELETED Since: JDO 1.0
Forum
44

Delete object from collection versus delete from JPQL

persist() to write them to the database.  But does running a JPQL update or delete alter the in-memory ... , but I'm not sure if that will alter my program state.  Will it? Thanks, Lee  UPDATE and DELETE queries ... between memory and database objects. See these manual pages for more details: DELETE queries UPDATE
Manual
39

Chapter 3 - Using JPA

Explains how to store, retrieve, update and delete entity objects using JPA.
Forum
33

Handling deleted references

Hi support team, I have a problem when using DELETE query to delete Entity instances. We use ... has a profile. To reset a profile I run a DELETE query on the old profile , hoping that this would lead ... , which simply checks if the profile instance is such a "intermediate/deleted" instance. Is there a way
Forum
33

Unable to delete the .odb file programatically

Hi, I created the test.odb file, read the contents and now trying the delete the odb file using ... , when i am trying to delete the file using the followng code     File[] files = parentDir.listFiles();     for (File temp : files ) {         boolean deleted = file.delete(); // getting false
Issue
33

I can't get cascading delete to work in JDO

, but cascading delete does not, leaving orphan objects. Thank you for this report. Apparently cascading delete has never been implemented in ObjectDB (see also "Deleting Dependent Objects" on this old documentation page). Build 2.7.5_04 implements cascading delete in JDO. Your NetBeans project was converted