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javax.persistence.MappedSuperclass

// address field mapping overridden to PT_EMP.ADDR_ID fk @Column(name="WAGE
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JoinTable.inverseJoinColumns

Annotation Element javax.persistence.JoinTable JoinColumn[] inverseJoinColumns (Optional) The foreign key columns of the join table which reference the primary table of the entity that does not own the association. (I.e. the inverse side of the association). Uses the same defaults as for JoinColumn. Default value: {} Since: JPA 1.0
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JoinTable.joinColumns

Annotation Element javax.persistence.JoinTable JoinColumn[] joinColumns (Optional) The foreign key columns of the join table which reference the primary table of the entity owning the association. (I.e. the owning side of the association). Uses the same defaults as for JoinColumn. Default value: {} Since: JPA 1.0
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MapKeyJoinColumn.nullable

Annotation Element javax.persistence.MapKeyJoinColumn boolean nullable (Optional) Whether the foreign key column is nullable. Default value: false Since: JPA 2.0
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MapKeyJoinColumns.value

Annotation Element javax.persistence.MapKeyJoinColumns MapKeyJoinColumn[] value (Required) The map key join columns that are used to map to the entity that is the map key. Since: JPA 2.0
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MapKeyJoinColumn.insertable

Annotation Element javax.persistence.MapKeyJoinColumn boolean insertable (Optional) Whether the column is included in SQL INSERT statements generated by the persistence provider. Default value: true Since: JPA 2.0
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javax.persistence.DiscriminatorType

javax.persistence Enum DiscriminatorType java.lang.Object java.lang.Enum<javax.persistence.DiscriminatorType> javax.persistence.DiscriminatorType Implemented Interfaces: Serializable, Comparable<DiscriminatorType> Defines supported types of the discriminator column. Since: JPA 1.0
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javax.persistence.Table

addition to any constraints specified by the Column and JoinColumn annotations and constraints entailed
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MapKeyColumn.updatable

Annotation Element javax.persistence.MapKeyColumn boolean updatable (Optional) Whether the column is included in SQL UPDATE statements generated by the persistence provider. Default value: true Since: JPA 2.0
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MapKeyColumn.nullable

Annotation Element javax.persistence.MapKeyColumn boolean nullable (Optional) Whether the database column is nullable. Default value: false Since: JPA 2.0

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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