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Manual
7

JPA Persistable Types

The term persistable types refers to data types that can be used in storing data in the database. ObjectDB supports all the JPA persistable types, which are: User defined classes - Entity classes, Mapped superclasses, Embeddable classes. Simple Java data types: Primitive types, Wrappers, String
JPA Doc
7

JPA Annotations for Relationships

Relationships are persistent fields in persistable classes that reference other entity objects. The four relationship modes are represented by the following annotations: Unlike ORM JPA implementations, ObjectDB does not enforce specifying any of the annotations above. Specifying a relationship
Result
7

ObjectDB Download

Your download should start automatically. If it doesn't, please click here. First Steps in using ObjectDB For step by step instructions on how to use ObjectDB in your IDE refer to one of the following tutorials: Getting Started with JPA and Eclipse Tutorial Getting Started with JPA and NetBeans Tutorial
JPA Doc
7

JPA Annotations for Value Generation

can also reference a value generator, which is defined at the class level by using one of the following annotations
Manual
7

JPA Entity Fields

: OneToOne, ManyToOne - for references of entity types. OneToMany, ManyToMany - for collections
Manual
7

CRUD Database Operations with JPA [2011-02-11]

Entities JPA refers to entity objects that are associated with an EntityManager as 'managed'. A newly
Manual
7

CRUD Database Operations with JPA

Entities JPA refers to entity objects that are associated with an EntityManager as 'managed'. A newly
JPA Doc
5

javax.persistence.spi.PersistenceUnitInfo

referring to a jar file or referring to a directory that contains an exploded jar file, or some other URL from which an InputStream in jar format can be obtained. Returns: a list of URL objects referring ... of that directory.) The URL will either be a file: URL referring to a jar file or referring
Issue
4

Best practise loading big data

. When do this within one transaction without holding a reference on the retrived entities then we discover ... ? Do you always use only enhanced classes? With enhanced classes ObjectDB is not expected to hold strong references ... the heap per type and paths of strong references from roots to objects? @Entity class
JPA Doc
4

javax.persistence.CollectionTable

contains references to other entities, the default values for the columns corresponding to those references may be overridden by means of the AssociationOverride and/or AssociationOverrides annotations ... columns of the collection table which reference the primary table of the entity. (Optional) The foreign