Fast Object Database for Java - with JPA/JDO support

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Value.generateForeignKey

Annotation Element javax.jdo.annotations.Value String generateForeignKey Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume a foreign key constraint Default value: "" Since: JDO 2.1
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Key.generateForeignKey

Annotation Element javax.jdo.annotations.Key String generateForeignKey Generate or assume a foreign key constraint exists on the column or columns associated with this join. Specify "true" or "false". Returns: whether to generate or assume a foreign key constraint Default value: "" Since: JDO 2.1
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MapKeyJoinColumn.referencedColumnName

Annotation Element javax.persistence.MapKeyJoinColumn String referencedColumnName (Optional) The name of the column referenced by this foreign key column. The referenced column is in the table of the target entity. Default (only applies if single join column is being used.) The same name as
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JoinTable.name

Annotation Element javax.persistence.JoinTable String name (Optional) The name of the join table. Defaults to the concatenated names of the two associated primary entity tables, separated by an underscore. Default value: "" Since: JPA 1.0
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javax.persistence.criteria.Expression

javax.persistence.criteria Interface Expression Superinterfaces: Selection, TupleElement Subinterfaces: CollectionJoin, Case, Coalesce, In, SimpleCase, From, Join, ListJoin, MapJoin, ParameterExpression, Path, PluralJoin, Predicate, Root, SetJoin, Subquery Type for query expressions
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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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getModel()

Method javax.persistence.criteria.SetJoin SetAttribute getModel() Return the metamodel representation for the set attribute. Returns: metamodel type representing the Set that is the target of the join Since: JPA 2.0
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JoinType.RIGHT

Enum Constant javax.persistence.criteria.JoinType RIGHT Right outer join. Since: JPA 2.0
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PrimaryKeyJoinColumn.name

Annotation Element javax.persistence.PrimaryKeyJoinColumn String name (Optional) The 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
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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

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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