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javax.persistence.NamedNativeQueries

javax.persistence Annotation NamedNativeQueries Target: Classes Used to specify multiple native SQL named queries. Query names are scoped to the persistence unit. The NamedNativeQueries annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 See Also: NamedNativeQuery
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getTransaction()

Method javax.persistence.EntityManager EntityTransaction getTransaction() Return the resource-level EntityTransaction object. The EntityTransaction instance may be used serially to begin and commit multiple transactions. Returns: EntityTransaction instance Throws: IllegalStateException - if invoked on a JTA entity manager Since: JPA 1.0
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javax.persistence.ManyToOne

javax.persistence Annotation ManyToOne Target: Fields (including property get methods) Defines a single-valued association to another entity class that has many-to-one multiplicity. It is not normally necessary to specify the target entity explicitly since it can usually be inferred from the type
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javax.persistence.AssociationOverride

mappings at multiple levels of embedding, a dot (".") notation syntax must be used in the name element
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javax.persistence.OneToOne

javax.persistence Annotation OneToOne Target: Fields (including property get methods) When using ObjectDB - this annotation is optional. Defines a single-valued association to another entity that has one-to-one multiplicity. It is not normally necessary to specify the associated target entity
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javax.persistence.AssociationOverrides

javax.persistence Annotation AssociationOverrides Target: Classes and fields (including property get methods) Used to override mappings of multiple relationship properties or fields. Example: @MappedSuperclass public class Employee { @Id protected Integer id; @Version
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javax.persistence.NamedQueries

javax.persistence Annotation NamedQueries Target: Classes Specifies multiple named Java Persistence query language queries. Query names are scoped to the persistence unit. The NamedQueries annotation can be applied to an entity or mapped superclass. Since: JPA 1.0 See Also: NamedQuery Learn
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javax.jdo.spi.StateManager

PersistenceCapable instance contains a reference to a StateManager. A StateManager might manage one or multiple
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javax.jdo.JDOHelper

. If multiple PMFs with the requested name are found, a JDOFatalUserException is thrown. Parameters
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setMultithreaded(flag)

Method javax.jdo.PersistenceManager void setMultithreaded( boolean flag ) Set the Multithreaded flag for this PersistenceManager. Applications that use multiple threads to invoke methods or access fields from instances managed by this PersistenceManager must set this flag to true. Instances managed

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

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