About remove

manual

Deleting JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database.... from the database either explicitly by invoking the remove remove(entity) EntityManager's method Remove the entity instance. ...

 
api-jpa

remove(entity)

Remove the entity instance.(Method of javax.persistence.EntityManager)

 
manual

Working with JPA Entity Objects

Explains the entity object lifecycle and the persistence context.... for deletion, by using the EntityManager’s remove remove(entity) EntityManager's method Remove the entity instance. ...

 
manual

CRUD Database Operations with JPA

Shows how to use Java/JPA to store, retrieve, update & delete.... a managed object (usually by retrieval) and invoke the remove remove(entity) EntityManager's method Remove the entity instance. ...

 
manual

CRUD Operations with JPA

Explains how to use JPA for CRUD database operations (persist, retrieve, update, remove). The following subsections explain how to use JPA for CRUD database operations: Storing JPA Entity Objects Retrieving JPA Entity Objects Updating JPA Entity Objects Deleting JPA Entity Objects ...

 
api-jpa

CascadeType.REMOVE

Cascade remove operation(Enum Constant of javax.persistence.CascadeType)

 
issue

Issue with cascade delete & add/remove

Hi, Please see the attached sample project (important: classes need to be enhanced as done in the pom.xml file). ... need to clear the collection first, commit that and then remove the Contact? thanks! ... . get ( 0 ) ;   // Remove and add address again -> will be gone contact. getAddresses ( ) . remove ( address_1 ) ; contact. getAddresses ...

 
forum_thread

Removing objects where ManyToMany relationships exist

Consider you have an entity Entity with the following unidirectional relationship: @ManyToMany private Set<OtherEntity> setOfOtherEntities; public Set<OtherEntity> getOtherEntities() {     if (setOfOtherEntities == null) {       setOfOtherEntities = new TreeSet<OtherEntity>();     }     return setOfOtherEntities;   } ... where an entry points to an to-be-removed OtherEntity, to remove it from the Set manually? Hope not... Thanks for your help! ... OtherEntity object is deleted the application must also remove any references to it, including from the  setOfOtherEntities ...

 
forum_thread

Removing an entity throws exception

Hi all, I'm testing ObjectDB for my project, but I have troubles with it. At this time I'm not able to remove customer entity, when it's read by a query (it's attached), it throws this exception: Exception in thread "AWT-EventQueue-0" java.lang.RuntimeException: com.objectdb.o._RollbackException: Failed to commit transaction: 51 ... ... I have troubles with it. At this time I'm not able to remove customer entity, when it's read by a query (it's attached), it ... is the entity detached (why?). When I merge it, I can remove it without problems... The Customer class code: @ ...

 
forum_thread

OrphanRemoval not working?

Dear all, I have entities Invoice and InvoiceItem, their relation is defined: public class Invoice implements Serializable { ..     @OneToMany(mappedBy = "invoice", fetch= FetchType.EAGER, orphanRemoval=true, cascade= CascadeType.ALL)     private List<InvoiceItem> invoiceItemList; .. } ... on the owner side, but in the case of orphan removal the remove operation has to be done on the owned (mapped by) side to have effect ...