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types and serializable types (user-defined or system-defined). Note : Only instances of entity classes ... ("RED", "GREEN", and "BLUE"). Serializable Types Every serializable class (user-defined or

that it can represent objects in the database. Conceptually, this is similar to serializable classes ... to the NotSerializableException that Java throws when you try to serialize a non- serializable object. However, all JPA

) Mapped super classes (@MappedSuperclass) Enum classes Serializable types Persistent System Types ... multidimensional arrays. Any other serializable type . Lifecycle Events JPA callback methods

method for instances of serializable types that are otherwise non-persistable (for example, a user

a persistence unit, An entity or IdClass class should implement the java.io. Serializable interface).

Jakarta Persistence (JPA) Class jakarta.persistence.PessimisticLockException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.PessimisticLockException Implemented Interfaces: Serializable

Jakarta Persistence (JPA) Enum jakarta.persistence.PersistenceUnitTransactionType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.PersistenceUnitTransactionType Implemented Interfaces: Constable , Comparable , Serializable Enumerates the possible approaches to transaction management in

Jakarta Persistence (JPA) Enum jakarta.persistence.FlushModeType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.FlushModeType Implemented Interfaces: Constable , Comparable , Serializable Enumerates flush modes recognized by the EntityManager . When queries are executed

Jakarta Persistence (JPA) Enum jakarta.persistence.GenerationType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.GenerationType Implemented Interfaces: Constable , Comparable , Serializable Enumerates the defined primary key generation strategies. See Also: GeneratedValue Since: Jakarta

Jakarta Persistence (JPA) Enum jakarta.persistence.LockModeType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.LockModeType Implemented Interfaces: FindOption , RefreshOption , Constable , Comparable , Serializable Enumerates the kinds of optimistic or pessimistic lock

Jakarta Persistence (JPA) Enum jakarta.persistence.InheritanceType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.InheritanceType Implemented Interfaces: Constable , Comparable , Serializable Enumerated the options for mapping entity inheritance. See Also: Inheritance.strategy

Jakarta Persistence (JPA) Class jakarta.persistence.LockTimeoutException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.LockTimeoutException Implemented Interfaces: Serializable Thrown by

Jakarta Persistence (JPA) Enum jakarta.persistence.ConstraintMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.ConstraintMode Implemented Interfaces: Constable , Comparable , Serializable Used to control the application of a constraint. Since: Jakarta Persistence (JPA) 2.1 Enum

Jakarta Persistence (JPA) Enum jakarta.persistence.DiscriminatorType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.DiscriminatorType Implemented Interfaces: Constable , Comparable , Serializable Defines supported types of the discriminator column. See Also: DiscriminatorColumn

Jakarta Persistence (JPA) Class jakarta.persistence.EntityNotFoundException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.EntityNotFoundException Implemented Interfaces: Serializable Thrown

Jakarta Persistence (JPA) Class jakarta.persistence.EntityExistsException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.EntityExistsException Implemented Interfaces: Serializable Thrown by

Jakarta Persistence (JPA) Enum jakarta.persistence.FetchType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.FetchType Implemented Interfaces: Constable , Comparable , Serializable Defines strategies for fetching data from the database. The EAGER strategy is a requirement

Jakarta Persistence (JPA) Enum jakarta.persistence.EnumType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.EnumType Implemented Interfaces: Constable , Comparable , Serializable Enumerates available options for mapping enumerated types. The values of this enumeration specify

Jakarta Persistence (JPA) Enum in jakarta.persistence.criteria.Predicate jakarta.persistence.criteria.Predicate.BooleanOperator java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.criteria.Predicate.BooleanOperator Implemented Interfaces: Constable , Comparable , Serializable Since: Jakarta

Jakarta Persistence (JPA) Enum jakarta.persistence.criteria.Nulls java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.criteria.Nulls Implemented Interfaces: Constable , Comparable , Serializable Specifies the precedence of null values within query result sets. See Also: CriteriaBuilder.asc

, Serializable Since: Jakarta Persistence (JPA) 1.0 Enum Constants BASIC Basic attribute Since: Jakarta

Jakarta Persistence (JPA) Enum in jakarta.persistence.metamodel.Bindable jakarta.persistence.metamodel.Bindable.BindableType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.metamodel.Bindable.BindableType Implemented Interfaces: Constable , Comparable , Serializable Since: Jakarta

, Serializable Since: Jakarta Persistence (JPA) 1.0 Enum Constants COLLECTION Collection-valued attribute

Jakarta Persistence (JPA) Enum jakarta.persistence.ValidationMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.ValidationMode Implemented Interfaces: Constable , Comparable , Serializable The validation mode to be used by the provider for the persistence unit. Since: Jakarta Persistence

Jakarta Persistence (JPA) Enum in jakarta.persistence.metamodel.Type jakarta.persistence.metamodel.Type.PersistenceType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.metamodel.Type.PersistenceType Implemented Interfaces: Constable , Comparable , Serializable Since: Jakarta Persistence

Jakarta Persistence (JPA) Enum in jakarta.persistence.criteria.CriteriaBuilder jakarta.persistence.criteria.CriteriaBuilder.Trimspec java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.criteria.CriteriaBuilder.Trimspec Implemented Interfaces: Constable , Comparable , Serializable Used

Jakarta Persistence (JPA) Enum jakarta.persistence.criteria.JoinType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.criteria.JoinType Implemented Interfaces: Constable , Comparable , Serializable Defines the three varieties of join. Support for RIGHT outer joins is not required

[] , char[] or Character[] , a Java enum type, or any other serializable type. The use of the Basic

Jakarta Persistence (JPA) Enum jakarta.persistence.AccessType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.AccessType Implemented Interfaces: Constable , Comparable , Serializable Used with the Access annotation to specify an access type to be applied to an entity class, mapped

Jakarta Persistence (JPA) Enum jakarta.persistence.CascadeType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.CascadeType Implemented Interfaces: Constable , Comparable , Serializable Defines the set of cascadable operations that are propagated to the associated entity. The value cascade

Jakarta Persistence (JPA) Enum jakarta.persistence.CacheRetrieveMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.CacheRetrieveMode Implemented Interfaces: FindOption , Constable , Comparable , Serializable Specifies how the EntityManager interacts with the second-level cache when data

Jakarta Persistence (JPA) Enum jakarta.persistence.CacheStoreMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.CacheStoreMode Implemented Interfaces: FindOption , RefreshOption , Constable , Comparable , Serializable Specifies how the EntityManager interacts with the second-level cache

Jakarta Persistence (JPA) Class jakarta.persistence.SchemaValidationException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ jakarta.persistence.SchemaValidationException Implemented Interfaces: Serializable Thrown when schema validation fails. See Also: SchemaManager.validate

Jakarta Persistence (JPA) Class jakarta.persistence.QueryTimeoutException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.QueryTimeoutException Implemented Interfaces: Serializable Thrown by

Jakarta Persistence (JPA) Class jakarta.persistence.RollbackException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.RollbackException Implemented Interfaces: Serializable Thrown by

Jakarta Persistence (JPA) Enum jakarta.persistence.SharedCacheMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.SharedCacheMode Implemented Interfaces: Constable , Comparable , Serializable Specifies how the provider must use a second-level cache for the persistence unit. Corresponds

Jakarta Persistence (JPA) Enum jakarta.persistence.TemporalType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.TemporalType Implemented Interfaces: Constable , Comparable , Serializable Type used to indicate a specific mapping of Date or Calendar . Deprecated: Newly-written code

: Serializable Thrown by the persistence provider when a transaction is required but is not active

Jakarta Persistence (JPA) Enum jakarta.persistence.SynchronizationType java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.SynchronizationType Implemented Interfaces: Constable , Comparable , Serializable Specifies whether the persistence context is always automatically synchronized

Jakarta Persistence (JPA) Class jakarta.persistence.NonUniqueResultException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.NonUniqueResultException Implemented Interfaces: Serializable

Jakarta Persistence (JPA) Class jakarta.persistence.NoResultException java.lang.Object ∟ java.lang.Throwable ∟ java.lang.Exception ∟ java.lang.RuntimeException ∟ jakarta.persistence.PersistenceException ∟ jakarta.persistence.NoResultException Implemented Interfaces: Serializable Thrown by

Jakarta Persistence (JPA) Enum jakarta.persistence.ParameterMode java.lang.Object ∟ java.lang.Enum ∟ jakarta.persistence.ParameterMode Implemented Interfaces: Constable , Comparable , Serializable Specifies the mode of a parameter of a stored procedure query. See Also: StoredProcedureQuery

. Serializable ; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private

; import java.io. Serializable ; import javax.persistence.*; @Entity public class Point implements Serializable { private static final long serialVersionUID = 1L; @Id @GeneratedValue private long id

. Serializable ; import javax.persistence.*; @Entity public class Point implements Serializable { private

. Serializable ; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static

java.io. Serializable ; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable

. Serializable ; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private static

. Serializable ; import java.sql.Date; import javax.persistence.Entity; import javax.persistence.GeneratedValue; import javax.persistence.Id; @Entity public class Guest implements Serializable { private

code: package guest; import java.io. Serializable ; import java.sql.Date; import javax.persistence.Entity ... implements Serializable { private static final long serialVersionUID = 1L; // Persistent Fields: @Id