javax.persistence (Java EE 5 SDK)

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Java EE 5 SDK

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Package javax.persistence

The javax.persistence package contains the classes and interfaces that define the contracts between a persistence provider and the managed classes and the clients of the Java Persistence API.

参阅: 详细描述

接口摘要
EntityManager	Interface used to interact with the persistence context.
EntityManagerFactory	The `EntityManagerFactory` interface is used by the application to obtain an application-managed entity manager.
EntityTransaction	The `EntityTransaction` interface is used to control resource transactions on resource-local entity managers.
Query	Interface used to control query execution.

类摘要
Persistence	Bootstrap class that is used to obtain an `EntityManagerFactory`.

Enum Summary
CascadeType	Defines the set of cascadable operations that are propagated to the associated entity.
DiscriminatorType	Defines supported types of the discriminator column.
EnumType	Defines mapping for the enumerated types.
FetchType	Defines strategies for fetching data from the database.
FlushModeType	Flush mode setting.
GenerationType	Defines the types of primary key generation.
InheritanceType	Defines inheritance strategy options.
LockModeType	Lock modes that can be specified by means of the `EntityManager.lock()` method.
PersistenceContextType	Specifies whether a transaction-scoped or extended persistence context is to be used in `PersistenceContext`.
TemporalType	Type used to indicate a specific mapping of `Date` or `Calendar`.

Exception Summary
EntityExistsException	Thrown by the persistence provider when `EntityManager.persist(Object)` is called and the entity already exists.
EntityNotFoundException	Thrown by the persistence provider when an entity reference obtained by `EntityManager.getReference(Class,Object)` is accessed but the entity does not exist.
NonUniqueResultException	Thrown by the persistence provider when `getSingleResult()` is executed on a query and there is more than one result from the query.
NoResultException	Thrown by the persistence provider when `getSingleResult()` is executed on a query and there is no result to return.
OptimisticLockException	Thrown by the persistence provider when an optimistic locking conflict occurs.
PersistenceException	Thrown by the persistence provider when a problem occurs.
RollbackException	Thrown by the persistence provider when the `EntityTransaction.commit()` fails.
TransactionRequiredException	Thrown by the persistence provider when a transaction is required but is not active.

Annotation Types Summary
AssociationOverride	This annotation is used to override a many-to-one or one-to-one mapping of property or field for an entity relationship.
AssociationOverrides	This annotation is used to override mappings of multiple many-to-one or one-to-one relationship properties or fields.
AttributeOverride	The `AttributeOverride` annotation is used to override the mapping of a `Basic` (whether explicit or default) property or field or Id property or field.
AttributeOverrides	Is used to override mappings of multiple properties or fields.
Basic	The `Basic` annotation is the simplest type of mapping to a database column.
Column	Is used to specify a mapped column for a persistent property or field.
ColumnResult	References name of a column in the SELECT clause of a SQL query - i.e., column alias, if applicable.
DiscriminatorColumn	Is used to define the discriminator column for the `SINGLE_TABLE` and `JOINED` inheritance mapping strategies.
DiscriminatorValue	Is used to specify the value of the discriminator column for entities of the given type.
Embeddable	Defines a class whose instances are stored as an intrinsic part of an owning entity and share the identity of the entity.
Embedded	Defines a persistent field or property of an entity whose value is an instance of an embeddable class.
EmbeddedId	Is applied to a persistent field or property of an entity class or mapped superclass to denote a composite primary key that is an embeddable class.
Entity	Specifies that the class is an entity.
EntityListeners	Specifies the callback listener classes to be used for an entity or mapped superclass.
EntityResult	References an entity in the SELECT clause of a SQL query.
Enumerated	Specifies that a persistent property or field should be persisted as a enumerated type.
ExcludeDefaultListeners	Specifies that the invocation of default listeners is to be excluded for the entity class (or mapped superclass) and its subclasses.
ExcludeSuperclassListeners	Specifies that the invocation of superclass listeners is to be excluded for the entity class (or mapped superclass) and its subclasses.
FieldResult	Is used to map the columns specified in the SELECT list of the query to the properties or fields of the entity class.
GeneratedValue	Provides for the specification of generation strategies for the values of primary keys.
Id	Specifies the primary key property or field of an entity.
IdClass	Specifies a composite primary key class that is mapped to multiple fields or properties of the entity.
Inheritance	Defines the inheritance strategy to be used for an entity class hierarchy.
JoinColumn	Is used to specify a mapped column for joining an entity association.
JoinColumns	Defines mapping for the composite foreign keys.
JoinTable	This annotation is used in the mapping of associations.
Lob	Specifies that a persistent property or field should be persisted as a large object to a database-supported large object type.
ManyToMany	Defines a many-valued association with many-to-many multiplicity.
ManyToOne	This annotation defines a single-valued association to another entity class that has many-to-one multiplicity.
MapKey	Is used to specify the map key for associations of type `Map`.
MappedSuperclass	Designates a class whose mapping information is applied to the entities that inherit from it.
NamedNativeQueries	Is used to specify an array of native SQL named queries.
NamedNativeQuery	Is used to specify a native SQL named query.
NamedQueries	Specifies an array of named Java Persistence query language queries.
NamedQuery	Is used to specify a named query in the Java Persistence query language, which is a static query expressed in metadata.
OneToMany	Defines a many-valued association with one-to-many multiplicity.
OneToOne	This annotation defines a single-valued association to another entity that has one-to-one multiplicity.
OrderBy	This annotation specifies the ordering of the elements of a collection valued association at the point when the association is retrieved.
PersistenceContext	Expresses a dependency on an `EntityManager` persistence context.
PersistenceContexts	Declares one or more `PersistenceContext` annotations.
PersistenceProperty	Describes a single container or persistence provider property.
PersistenceUnit	Expresses a dependency on an `EntityManagerFactory`.
PersistenceUnits	Declares one or more `PersistenceUnit` annotations.
PostLoad	Is used to specify callback methods for the corresponding lifecycle event.
PostPersist	Is used to specify callback methods for the corresponding lifecycle event.
PostRemove	Is used to specify callback methods for the corresponding lifecycle event.
PostUpdate	Is used to specify callback methods for the corresponding lifecycle event.
PrePersist	Is used to specify callback methods for the corresponding lifecycle event.
PreRemove	Is used to specify callback methods for the corresponding lifecycle event.
PreUpdate	Is used to specify callback methods for the corresponding lifecycle event.
PrimaryKeyJoinColumn	This annotation specifies a primary key column that is used as a foreign key to join to another table.
PrimaryKeyJoinColumns	This annotation groups `PrimaryKeyJoinColumn` annotations.
QueryHint	An implementation-specific `Query` hint.
SecondaryTable	This annotation is used to specify a secondary table for the annotated entity class.
SecondaryTables	This annotation is used to specify multiple secondary tables for an entity.
SequenceGenerator	This annotation defines a primary key generator that may be referenced by name when a generator element is specified for the `GeneratedValue` annotation.
SqlResultSetMapping	This annotation is used to specify the mapping of the result of a native SQL query.
SqlResultSetMappings	This annotation is used to define one or more `SqlResultSetMapping`.
Table	This annotation specifies the primary table for the annotated entity.
TableGenerator	This annotation defines a primary key generator that may be referenced by name when a generator element is specified for the `GeneratedValue` annotation.
Temporal	This annotation must be specified for persistent fields or properties of type `Date` and `Calendar`.
Transient	This annotation specifies that the property or field is not persistent.
UniqueConstraint	This annotation is used to specify that a unique constraint is to be included in the generated DDL for a primary or secondary table.
Version	This annotation specifies the version field or property of an entity class that serves as its optimistic lock value.

Package javax.persistence Description