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jakarta.persistence.ManyToOne

Jakarta Persistence (JPA) Annotation Type jakarta.persistence. ManyToOne Implemented Interfaces ... the relationship field or property of the entity that is the owner of the relationship. A ManyToOne ... using the JoinTable annotation. The ManyToOne annotation may be used within an embeddable class

jakarta.persistence.ManyToOne.fetch

Jakarta Persistence (JPA) Method in jakarta.persistence. ManyToOne FetchType fetch (Optional) Whether the association should be lazily loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider runtime that the associated entity must be eagerly fetched

jakarta.persistence.ManyToOne.optional

Jakarta Persistence (JPA) Method in jakarta.persistence. ManyToOne boolean optional (Optional) Whether the association is optional. If set to false then a non-null relationship must always exist. May be used in schema generation to infer that the mapped foreign key column is not null . Default: true Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.ManyToOne.targetEntity

Jakarta Persistence (JPA) Method in jakarta.persistence. ManyToOne Class targetEntity (Optional) The entity class that is the target of the association. Defaults to the type of the field or property that stores the association. Default: void/class Since: Jakarta Persistence (JPA) 1.0

jakarta.persistence.ManyToOne.cascade

Jakarta Persistence (JPA) Method in jakarta.persistence. ManyToOne CascadeType[] cascade (Optional) The operations that must be cascaded to the target of the association. By default no operations are cascaded. Default: {} Since: Jakarta Persistence (JPA) 1.0

LAZY @ManyToOne field functions as EAGER

to console a lazy @ ManyToOne field after the entity manager closes. There is a switch DO_VIEW ... closes and as expected both a LAZY @ ManyToOne field and an EAGER @ ManyToOne field are viewable: b ... , when it is marked as @ ManyToOne (fetch=FetchType.LAZY) ?   package com.greensoft.objectdb.test

Conflicting modifiers .... (javax.persistence.Id, javax.persistence.ManyToOne)

, javax.persistence. ManyToOne ) (error 322) at com.objectdb.jpa.EMImpl.persist(EMImpl.java:376) at uk ... .container (javax.persistence.Id, javax.persistence. ManyToOne ) at com.objectdb.o.MSG.d(MSG.java:61 ... .persistence.Id; import javax.persistence.IdClass; import javax.persistence. ManyToOne ; import javax

Broken @ManyToOne reference

public abstract class A { @Id @ ManyToOne (fetch = FetchType.EAGER, cascade=CascadeType.ALL, optional ... ; import javax.persistence. ManyToOne ; import javax.persistence.MappedSuperclass; @MappedSuperclass public abstract class ChildsSuper {   //  @Id   @ ManyToOne (fetch = FetchType.EAGER

ObjectDB Explorer don't show ManyToOne relations

Hello support. we have a problem with the ObjectDB Explorer and @ ManyToOne relations. We persist ... ;@ ManyToOne (targetEntity = ModelElementImpl.class, cascade = {CascadeType.REFRESH}) private ModelElement ... ;@ ManyToOne (targetEntity = ModelElementImpl.class, cascade = {CascadeType.REFRESH}) private

Level 2 cache not hit in @ManyToOne

Hi! I have 2 entities: User and Item, both @Cacheable. Item has @ ManyToOne private User user. Level 2 JPA cache is activated and it works ok for find by id (tested by changing data in explorer and reading in my app). Problem 1: find by id on Item it's good, it hits the cache, but not for its field

JPA Entity Fields

). Every persistent field can be marked with one of the following annotations: OneToOne , ManyToOne ... { String name; @ ManyToOne Department department; } @Entity public class Department { @OneToMany

Retrieving JPA Entity Objects

retrieval by using a lazy fetch type: @Entity class Employee { : @ ManyToOne ( fetch = FetchType . LAZY ... FetchType . LAZY in either @OneToOne or @ ManyToOne annotations (currently ObjectDB does not distinguish

jakarta.persistence.JoinColumn

and the default values apply. Example: @ ManyToOne @JoinColumn(name = "ADDR_ID") public Address getAddress ... public Set getOrders() { return orders; } See Also: ManyToOne OneToMany OneToOne JoinTable ... . If the join is for a OneToOne or ManyToOne mapping using a foreign key mapping strategy, the foreign key

General Performance Issues Illustrated with a Specific Method

; import javax.persistence. ManyToOne ; import javax.persistence.OneToOne; import javax.persistence.Table ... ; private String comments; /* Create Properties */ @ ManyToOne (fetch = FetchType.LAZY) private WebUser ... .persistence.TemporalType.DATE) private Date createdOn; @ ManyToOne (fetch = FetchType.LAZY) private

jakarta.persistence.MapsId

Jakarta Persistence (JPA) Annotation Type jakarta.persistence.MapsId Implemented Interfaces: Annotation Target: Method, Field Designates a ManyToOne or OneToOne relationship attribute that provides ... ; ... @MapsId("empid") // maps the empid attribute of embedded id @ ManyToOne Employee emp; } If a ManyToOne

jakarta.persistence.MapKey

public class Employee { ... @Id Integer getEmpId() { ... } @ ManyToOne @JoinColumn(name = "dept_id ... () {... } ... } @Entity public class Employee { @Id public Integer getEmpId() { ... } ... @ ManyToOne @JoinColumn(name

jakarta.persistence.AssociationOverride

@MappedSuperclass public class Employee { ... @ ManyToOne protected Address address; ... } @Entity ... "))) @Embedded ContactInfo contactInfo; ... } @Embeddable public class ContactInfo { @ ManyToOne Address

jakarta.persistence.OneToMany

Set getOrders() { return orders; } // In Order class: @ ManyToOne @JoinColumn(name = "CUST_ID ... : @ ManyToOne @JoinColumn(name = "CUST_ID", nullable = false) public Customer getCustomer() { return customer

jakarta.persistence.JoinColumn.name

. If the join is for a OneToOne or ManyToOne mapping using a foreign key mapping strategy, the foreign key ... . If the join is for a ManyToMany mapping or for a OneToOne or bidirectional ManyToOne / OneToMany

jakarta.persistence.JoinColumn.table

the primary table of the applicable entity. Default: If the join is for a OneToOne or ManyToOne ... bidirectional ManyToOne / OneToMany mapping using a join table, the name of the join table

jakarta.persistence.JoinTable

ManyToOne , OneToOne , ManyToMany , or OneToMany . See Also: JoinColumn JoinColumns Since: Jakarta

jakarta.persistence.JoinColumns

specify both name and referencedColumnName . Example: @ ManyToOne @JoinColumns({ @JoinColumn(name

jakarta.persistence.MappedSuperclass

protected Integer empId; @Version protected Integer version; @ ManyToOne @JoinColumn(name = "ADDR

jakarta.persistence.Embeddable

localNumber; @ ManyToOne protected PhoneServiceProvider provider; ... } @Entity public class

jakarta.persistence.EmbeddedId

= "dep_name")) @EmbeddedId DependentId id; ... @MapsId("empPK") @ ManyToOne Employee emp

jakarta.persistence.FetchType

ManyToMany OneToMany ManyToOne OneToOne Since: Jakarta Persistence (JPA) 1.0 Enum Constants EAGER Data

jakarta.persistence.AssociationOverrides

; @Version protected Integer version; @ ManyToOne protected Address address; @OneToOne protected Locker

jakarta.persistence.CascadeType

=ALL is equivalent to cascade={PERSIST, MERGE, REMOVE, REFRESH, DETACH} . See Also: ManyToOne

Should derived fields of an EmbeddedId be manually maintained by app code?

javax.persistence. ManyToOne ; import javax.persistence.MapsId; import javax.persistence.Version ... ; @ ManyToOne (fetch=FetchType.LAZY) @MapsId("cont") private EContainer container; public EContainer ... ; import javax.persistence.FetchType; import javax.persistence. ManyToOne ; import javax.persistence

Error 363 - Failed to read value of inverse relationship

.AUTO) private long id; @ ManyToOne (optional=false) private ETown town; public ETown getTown ... possibleFriends; @ManyToMany(mappedBy = "blockedUserList") private List invisibleUsers; @ ManyToOne private ... ="postedMessages") private Player sender; @ ManyToOne private Player address; protected Message

EntityManager.refresh takes a long time

= CascadeType.REFRESH) @NotNull private List answers = new ArrayList (); @ ManyToOne private City city ... .REFRESH) @NotNull private List interests = new ArrayList (); @ ManyToOne (cascade = CascadeType ... = CascadeType.ALL) @NotNull private List paymentOperations = new ArrayList (); @ ManyToOne private PersonLevel

Error: Failed to write value of field X using reflection (oneToMany relation)

, but I can go through this. I have a clase named Pedido, that have a reference ManyToOne to a clase ... Direccion origen; @ ManyToOne (optional=true) private Cliente cliente; //Opcional @Basic(optional=false ... connection on the oneToMany - manyToOne . But I can't figure it out. Someone can help me? elnll002

Optimistic locking: prevent version increment on entity collection attribute

will be done from the DB but no success. I have tried to add ManyToOne of the owning side (Readings ... to add ManyToOne of the owning side (Readings), This should not make any difference. added EAGER fetch

Missing (null) elements in eager loaded references

children ; @ ManyToOne private Element parent ; etc... } and: @Entity public class DataElement ... children ; @ ManyToOne private DataElement parent ; @Basic private String label ; etc... } Embedable

OneToMany and cascade delete problem

; } and a shared class Offer: @Entity public static class Offer { @ ManyToOne private Product product; @ ManyToOne private Store store; } Naming of this class is not perfect, but in my application Offer

NoSuchFieldError: __odbTracker on NetBeans 7.3 + JBoss 7.1.1

serialVersionUID = 1L; @ ManyToOne @Index private City city; @OneToMany(mappedBy = "owner") private List ... serialVersionUID = 33L; @OneToMany(mappedBy = "city") private List persons; @ ManyToOne @Index private Person

Is it possible to remove parent/child entities without refresh?

.persistence.Id; import javax.persistence. ManyToOne ; import javax.persistence.MapKey; import javax ... ; @Id   @GeneratedValue   private long id;   @ ManyToOne (fetch = FetchType.LAZY

Merge with Parent/Child entities not possible

.GeneratedValue; import javax.persistence.Id; import javax.persistence. ManyToOne ; import javax ... long id;   @ ManyToOne (fetch = FetchType.LAZY, cascade = { CascadeType.PERSIST, CascadeType.MERGE

Composite indexes

? #4. Are @Index field used also on relations? @OneToOne, @ ManyToOne ? I don't want to start ... with and without such an index. 4. Are @Index field used also on relations? @OneToOne, @ ManyToOne

Object explorer cannot open odb file. ObjectDB many-to-many relationship

{     @Id @ ManyToOne (cascade = CascadeType.ALL, optional = false)     private User user;         @Id @ ManyToOne (cascade = CascadeType

Adding multi part path index on non-embedable object member

Is there a way to add single member index on members of a object member which is not configured embedable but is/are mapped by id like the two members below.  @Entity public class Customer { @MapsId @ ManyToOne (fetch = FetchType.LAZY) private Merchant merchant; @MapsId @ ManyToOne (fetch

Extra uninitialised entities spawned on merge()

In the following, Element is a base entity class, with a bi-directional @ ManyToOne -@OneToMany relationship Element owner - List ownedElements , and Example is a subclass entity with a relationship ... ;     private Element owner;         @ ManyToOne

@JoinColumn(nullable=false)

? This is an code example: //bi-directional many-to-one association to AlarmGroup @ ManyToOne ... . But you can use the optional element of the @ ManyToOne and @OneToOne annotations. Similarly

Merge Issue: Attempt to reuse an existing primary key value

; import org.junit.Test; import java.util.*; import javax.persistence. ManyToOne ; public class T1432y ... ;      @ ManyToOne (fetch = FetchType.LAZY, cascade = { CascadeType.ALL })  

How to avoid NULL values on Embedded entities

;       @Embedded private Direccion origen;     @ ManyToOne

_PersistenceException: Type is not found on getSingleResult.

;      private String segundoApellido;     @ ManyToOne   

Problem persisting a TreeSet field

Hello, I am getting a "java.lang.IllegalArgumentException: Can not set java.util.TreeSet field Message.children to java.util.HashSet" when persisting a Message object with a parent/children relationship: @ ManyToOne private Message parent; @OneToMany(mappedBy = "parent") private TreeSet children

Inverse OneToMany Mapping and EmbeddedId

.persistence . Id ; import javax.persistence . ManyToOne ; import javax.persistence . OneToMany ... ; public int id ;          @ ManyToOne ( )          public A a ;          @ ManyToOne ( )      

After using the enhancer, Lazy loaded collections are no longer loading. They are set as null

; } @ ManyToOne @JoinColumn(name="account_id", nullable=false) public Account account; public Account ... id = 1L;         @ ManyToOne       

New entity objects are duplicated on merge cascading

;       @ ManyToOne (fetch= FetchType.LAZY)       ... ;     @ ManyToOne (fetch= FetchType.LAZY)         B