 361 | 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 |
349 | 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 |
98 | Static Field javax.jdo.listener.InstanceLifecycleEvent int DELETE Since: JDO 2.0 |
98 | Enum Constant javax.jdo.ObjectState PERSISTENT_DELETED Since: JDO 1.0 |
98 | Enum Constant javax.jdo.ObjectState PERSISTENT_NEW_DELETED Since: JDO 1.0 |
46 | 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 |
35 | 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 |
34 | 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 |
34 | , 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 |
34 | JPQL (Java Persistence Query Language) supports updating and deleting database objects by queries. Currently ObjectDB supports only JPQL SELECT (retrieval) queries. Delete queries are supported for JDOQL (JDO Query Language). spring-data-jpa uses delete queries to implement repository.deleteAll |