About generated

manual

Auto Generated Values

Explains the different strategies for generating auto values (mainly for primary key fields) in JPA.... annotation specifies that a value will be automatically generated for that field. This is primarily intended for primary key fields but ... generate a primary key for every new entity object. These generated values are unique at the database level and are never recycled, as ...

 
tutorial

Report Generation with BIRT and JPA

Demonstrates how to use ObjectDB as a data source of the Business Intelligence and Reporting Tools (BIRT), open source report generator. This tutorial demonstrates how to create reports based on data in an ObjectDB database using the popular open source Business Intelligence and Reporting Tools (BIRT). In order to keep things as simple as possible - we will use the basic  ...

 
manual

BIRT/ODA ObjectDB Driver

Explains how to use the ObjectDB/JPA data source BIRT driver. The ObjectDB BIRT/ODA driver is an extension of the open source Business Intelligence and Reporting Tools (BIRT) that adds support of ObjectDB as a data source and JPQL as a data set query language. This page covers the following to ...

 
forum_thread

Failed to generate dynamic type objectdb.java.util.ArrayList

Ran into this error recently on a deployment server. Any thougths?     ... 2.2.8_06] Unexpected exception (Error 990)   Generated by Java HotSpot(TM) Server VM 1.6.0_26 (on Linux 2.6.39.1-linode34). ... 2.2.8] Unexpected exception (Error 990)   Generated by Java HotSpot(TM) Client VM 1.6.0_26 (on Windows XP 5.1). ...

 
tutorial

Step 1: Install BIRT and ObjectDB Driver

Explains how to install the BIRT and ObjectDB Eclipse features/plugins. We start by installing the BIRT development environment and the ObjectDB data source driver. Installing BIRT Choose one of the following options to install the BIRT development environment: Download and install the co ...

 
forum_thread

Possible issue for default id generator

First all, congratulations to Objectdb team for the excellent work. Possible issue for default id generator when strategy is sequence. Error: Incomplete definition of auto value in field MyTestCase$MyEntity.idgenerator name is missing (error 342) Please see attached file MyTestCase.java lines 35 and 36. I am not an expert but in my opinion there is no default generator but the element generator is optional. Thanks. #1 2012-04-12 20:39 First all, congratulations to Objectdb team for the excellent work. Possible issue for default id generat ...

 
api-jpa

JPA Annotations for Value Generation

Reference (JavaDoc) of JPA 2 value generation annotations, including @GeneratedValue, @SequenceGenerator and @TableGenerator. Automatically generated values are mainly useful for primary key fields, but are supported by ... about automatic value generation are provided at the Generated Value section of the ObjectDB Manual. ...

 
api-jpa

javax.persistence.TableGenerator

Defines a primary key generator that may be referenced by name when a generator element is specified for the GeneratedValue annotation.(Annotation of JPA)

 
api-jpa

GeneratedValue.generator

(Optional) The name of the primary key generator to use as specified in the SequenceGenerator or TableGenerator annotation.(Annotation Element of javax.persistence.GeneratedValue)

 
api-jpa

javax.persistence.GeneratedValue

Provides for the specification of generation strategies for the values of primary keys.(Annotation of JPA)