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Auto Generated Values

generated for that field. This is primarily intended for primary key fields but ObjectDB also supports this annotation for non-key numeric persistent fields as well. Several different value generation ... number generator for every database. This number generator is used to generate automatic object IDs

General Settings and Logging

The <general> configuration element specifies ObjectDB settings that are relevant to both the server side and the client side. The default configuration file contains the following <general> element: <general> <temp path="$temp/ObjectDB" threshold="64mb" /> <network inactivity-timeout="0

JPA Annotations for Value Generation

Automatically generated values are mainly useful for primary key fields, but are supported by ... can also reference a value generator, which is defined at the class level by using one of the following annotations: More details about automatic value generation are provided at the Generated Value section of the ObjectDB Manual.

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

exception (Error 990) Generated by Java HotSpot(TM) Server VM 1.6.0_26 (on Linux ... .InternalException: com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java.util.ArrayList com.objectdb.o.UserException: Failed to generate dynamic type objectdb.java.util.ArrayList at com

objectdb-2.6.9_02 (with "objectdb.temp.no-enhancement-crc-check") vs. generic classes with interfaces: detailed investigation

... is old and cannot be used" This report concerns investigation of issues when using with generic classes ... of the EnumValue compared with the other generic value wrapper examples, as it exhibits a problem ... carefully. I recommend the JD-GUI decompiler, which has better support for generics than the now

Possible issue for default id generator

generator when strategy is sequence. Error: Incomplete definition of auto value in field MyTestCase ... and 36: @GeneratedValue(strategy=GenerationType.SEQUENCE)//, generator="seq") @Id ... there is no default generator but the element generator is optional. Thanks. eurojet P. F. Martinez In


Annotation Element javax.persistence.GeneratedValue String generator (Optional) The name of the primary key generator to use as specified in the SequenceGenerator or TableGenerator annotation. Defaults to the id generator supplied by persistence provider. Default value: "" Since: JPA 1.0

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.

General JPA Tutorials

All about General JPA Tutorials in Java/JPA database - explanations, examples, references, links and related information.

auto-generated uuid fields

Hello, we're porting a JDO application to ObjectDB which uses uuid-hex generated values. However the page on generated values in your JPA tutorial only mentions numeric generated values, and when we try to use it the error message seems to imply that auto-generating strings isn't supported

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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