Fast Object Database for Java - with JPA/JDO support

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javax.jdo.PersistenceManager

(primary key) JDO identity. If it is used for instances of classes using datastore identity ... javax.jdo Interface PersistenceManager PersistenceManager is the primary interface for JDO-aware ... .0 T getObjectById(Class cls, Object key) Looks up the instance of the given type with the given
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javax.jdo.spi.PersistenceCapable

identity, this method must be called on an instance of a persistence-capable class with its primary key ... is initialized with the value(s) of the primary key field(s) of the instance on which the method is called ... with the values of the primary key fields of the persistence-capable instance on which the method
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javax.persistence.GenerationType

, Comparable Defines the types of primary key generation strategies. Since: JPA 1.0 ... must assign primary keys for the entity using a database identity column. Indicates that the persistence provider must assign primary keys for the entity using a database identity column. Since: JPA 1.0
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javax.persistence.MapKeyColumn

applies in addition to any constraint entailed by primary key mapping and to constraints specified ... the mapping for the key column of a map whose map key is a basic type. If the name element is not ... relationship field or property; "_"; "KEY". Example: @Entity public class Item { @Id int id
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javax.jdo.annotations.ForeignKey

. This is needed iff annotating a type where the foreign key is not defined on the primary table ... get methods) Annotation for a database foreign-key. Corresponds to the xml element "foreign-key". Since: JDO 2.1 Column[] columns Columns that compose this foreign key. Columns that compose this foreign key
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javax.persistence.SequenceGenerator

get methods) Defines a primary key generator that may be referenced by name when a generator element ... class or on the primary key field or property. The scope of the generator name is global ... to be the generator for primary key values. (Required) A unique generator name that can be referenced by
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javax.jdo.annotations.Persistent

Since: JDO 2.1 String primaryKey Whether this member is part of the primary key for application identity. Whether this member is part of the primary key for application identity. This is equivalent ... is part of the primary key Default value: "" Since: JDO 2.1 int recursionDepth Recursion depth
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javax.persistence.Id

the primary key of an entity. The field or property to which the Id annotation is applied ... .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
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javax.persistence.JoinTable

the primary table of the entity that does not own the association. (Optional) The foreign key columns ... which reference the primary table of the entity owning the association. (Optional) The foreign key columns ... of the join table is assumed to be the table names of the associated primary tables concatenated
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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

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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