About delete

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Issue
22

Deleting a broken reference that was fixed to null in the Explorer

Using version 2.7.4_01, we did a repair. After repair a former link to a missing reference was converted to null. This cannot be deleted using explorer   Thank you for this report. Build 2.7.4_02 fixes the issue. hgzwicker
Forum
22

How to delete M2M relationship?

.ALL)     private Set timeslots = new HashSet(); And i would like to delete the timeslots..i've tried
Manual
20

JPA Query Structure (JPQL / Criteria)

(update and delete queries have a slightly different form). The other JPQL clauses, WHERE, GROUP BY, HAVING and ORDER BY are optional. The structure of JPQL DELETE and UPDATE queries is simpler: DELETE
Result
20

E-delete.png

E-delete.png
Manual
17

Chapter 1 - Quick Tour

ObjectDB databases and perform basic CRUD operations (Create/Store, Retrieve, Update and Delete ... , retrieving, updating and deleting Point objects. To run the sample program of this chapter in
Manual
17

Database Management Settings

and deleted by ObjectDB when the database is closed. The name of the recovery file is based on the name ... in tests). The content of these temporary databases is deleted when using the drop url connection
Manual
17

Locking in JPA

that has to be updated or deleted is checked. An exception is thrown if it is found out that an update ... deleted, and compares the version number of that object in the database to the version number
Manual
17

SELECT clause (JPQL / Criteria API)

objects, transparent update detection, support for delete, etc. Query results are not limited to entity ... efficiently. They are less productive with operations that update or delete entity objects, in
Manual
17

Database Connection using JPA

mode. drop - for deleting any existing database content (useful for tests). To connect ... ); EntityTransaction Operations that affect the content of the database (store, update, delete
JDO Doc
14

javax.jdo.Query

() Deletes all the instances of the candidate class that pass the filter. Deletes all the instances ... that were deleted, specifically not including the number of dependent and embedded instances. Dirty ... life cycle changes as if deletePersistent were called on them. Specifically, if the class of deleted