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6

MapKeyJoinColumn.table

that contains the foreign key column. If the join is for a map key for an element collection, the foreign key column is in the collection table for the map value. If the join is for a map key ... key column is in a join table. If the join is for a OneToMany entity relationship using a foreign
6

MapKeyColumn.name

column. The table in which it is found depends upon the context. If the map key is for an element collection, the map key column is in the collection table for the map value. If the map key ... column is in a join table. If the map key is for a OneToMany entity relationship using a foreign key
6

javax.persistence.AttributeOverrides

", column=@Column("EMP_START")), @AttributeOverride(name="endDate", column=@Column("EMP_END")) }) public EmploymentPeriod getEmploymentPeriod
6

javax.persistence.JoinTable

[] inverseJoinColumns (Optional) The foreign key columns of the join table which reference the primary table of the entity that does not own the association. (Optional) The foreign key columns ... : {} Since: JPA 1.0 JoinColumn[] joinColumns (Optional) The foreign key columns of the join table
6

javax.persistence.Id

.sql.Date; java.math.BigDecimal; java.math.BigInteger. The mapped column for the primary key of the entity is assumed to be the primary key of the primary table. If no Column annotation is specified, the primary key column name is assumed to be the name of the primary key property or field. Example
6

PrimaryKeyJoinColumn.name

of the primary key column of the current table. Defaults to the same name as the primary key column of the primary table of the superclass (JOINED mapping strategy); the same name as the primary key column of the primary table (SecondaryTable mapping); or the same name as the primary key column for the table
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PrimaryKeyJoinColumn.referencedColumnName

) The name of the primary key column of the table being joined to. Defaults to the same name as the primary key column of the primary table of the superclass (JOINED mapping strategy); the same name as the primary key column of the primary table (SecondaryTable mapping); or the same name as the primary
6

javax.persistence.DiscriminatorValue

of the discriminator column for entities of the given type. The DiscriminatorValue annotation can only be specified ... and a discriminator column is used, a provider-specific function will be used to generate a value representing ... . The inheritance strategy and the discriminator column are only specified in the root of an entity
6

javax.persistence.Embedded

(name="startDate", column=@Column("EMP_START")), @AttributeOverride(name="endDate", column=@Column("EMP_END")) }) public EmploymentPeriod getEmploymentPeriod() { ... } Since: JPA 1.0
0

javax.jdo.annotations.ForeignKey

2.1 Column[] columns Columns that compose this foreign key. Columns that compose this foreign key. Returns: the columns that compose this foreign key Default value: {} Since: JDO 2.1 String deferred

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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