About persistence unit

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JPA Doc
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javax.persistence.OneToOne

javax.persistence Annotation OneToOne Target: Fields (including property get methods) When using ... loaded or must be eagerly fetched. The EAGER strategy is a requirement on the persistence provider ... to the persistence provider runtime. Default value: javax.persistence.FetchType.EAGER Since: JPA 1.0 String
JPA Doc
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javax.persistence.OptimisticLockException

javax.persistence Exception OptimisticLockException java.lang.Object java.lang.Throwable java.lang.Exception java.lang.RuntimeException javax.persistence.PersistenceException javax.persistence.OptimisticLockException Implemented
JPA Doc
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javax.persistence.PessimisticLockException

javax.persistence Exception PessimisticLockException java.lang.Object java.lang.Throwable java.lang.Exception java.lang.RuntimeException javax.persistence.PersistenceException javax.persistence.PessimisticLockException Implemented
JPA Doc
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javax.persistence.QueryTimeoutException

javax.persistence Exception QueryTimeoutException java.lang.Object java.lang.Throwable java.lang.Exception java.lang.RuntimeException javax.persistence.PersistenceException javax.persistence.QueryTimeoutException Implemented Interfaces
JPA Doc
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javax.persistence.spi.PersistenceUnitTransactionType

javax.persistence.spi Enum PersistenceUnitTransactionType java.lang.Object java.lang.Enumpersistence.spi.PersistenceUnitTransactionType> javax.persistence.spi ... > Specifies whether entity managers created by the javax.persistence.EntityManagerFactory will be JTA or
JPA Doc
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javax.persistence.TransactionRequiredException

javax.persistence Exception TransactionRequiredException java.lang.Object java.lang ... .persistence.PersistenceException javax.persistence.TransactionRequiredException Implemented Interfaces: Serializable Thrown by the persistence provider when a transaction is required
JPA Doc
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persist(entity)

Method javax.persistence.EntityManager void persist(   Object entity ) Make an instance managed and persistent. Parameters: entity - entity instance Throws: EntityExistsException - if the entity already exists. (If the entity already exists, the EntityExistsException may be thrown when the persist
JPA Doc
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CascadeType.PERSIST

Enum Constant javax.persistence.CascadeType PERSIST Cascade persist operation Since: JPA 1.0
JDO Doc
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Constants.ELEMENT_PERSISTENCE_MANAGER_FACTORY

Static Field javax.jdo.Constants String ELEMENT_PERSISTENCE_MANAGER_FACTORY The name of the persistence manager factory element in the JDO configuration file. Constant value is persistence-manager-factory. Since: JDO 2.1
JPA Doc
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javax.persistence.AccessType

javax.persistence Enum AccessType java.lang.Object java.lang.Enumpersistence.AccessType> javax.persistence.AccessType Implemented Interfaces: Serializable, Comparable Is used with the Access annotation to specify an access type to be applied to an entity class