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3

javax.persistence.OneToMany

. The LAZY strategy is a hint to the persistence provider runtime. Default value: javax.persistence
3

ManyToMany.fetch

is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.LAZY Since: JPA 1.0
3

javax.persistence.OneToOne

runtime that the associated entity must be eagerly fetched. The LAZY strategy is a hint to the persistence
3

Basic.optional

Annotation Element javax.persistence.Basic boolean optional (Optional) Defines whether the value of the field or property may be null. This is a hint and is disregarded for primitive types; it may be used in schema generation. If not specified, defaults to true. Default value: true Since: JPA 1.0
3

Basic.fetch

strategy is a hint to the persistence provider runtime. If not specified, defaults to EAGER. Default
3

ElementCollection.fetch

strategy is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.LAZY Since: JPA 2.0
3

javax.persistence.ElementCollection

must be eagerly fetched. The LAZY strategy is a hint to the persistence provider runtime. Default value
3

ManyToOne.fetch

is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.EAGER Since: JPA 1.0
3

OneToMany.fetch

is a hint to the persistence provider runtime. Default value: javax.persistence.FetchType.LAZY Since: JPA 1.0
0

evict(pc)

Method javax.jdo.PersistenceManager void evict( Object pc ) Mark an instance as no longer needed in the cache. Eviction is normally done automatically by the PersistenceManager at transaction completion. This method allows the application to explicitly provide a hint to the PersistenceManager

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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