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Removing objects where ManyToMany relationships exist

. Notice, that with ORM (e.g. Hibernate, EclipseLink) collections are always implemented this way, i.e

JPA inheritance issue with ObjectDB - Field not found in type error

. However, it is unclear how using @Inheritance caused the issue as ObjectDB ignores this ORM annotation

Spatial Support

may be persisted, if defined as entity classes (e.g. in an orm.xml file) support Support

InternalError on query of empty database


Java 8 Enhancer Problem

:120) at com.objectdb.JEnhancerAgent.transform(JEnhancerAgent.java:152) at org.springframework.orm

joining of tables

Hi In objectdb site i found :Note: This ORM/SQL annotation is silently ignored by ObjectDB so i want join tow table and generate a third table. Ex: table 1: employee table 2: address and the generate table will be table 3: emp_add employee: e_id, e_name address: add_id, city, house

@Column length is not working.

. Deepak_1996 Deepak Kumar Maharana ORM annotations, including @Column are silently ignored by ObjectDB

Activation Issue


Problem with @UniqueConstraint

Sauer @UniqueConstraint is an ORM annotation. It references RDBMS columns rather than Java class

JDO PersistenceManager.getSequence() returns null sometimes

When using JDO without annotations, database sequences are normally defined in the ORM file. Following discussion on the forum I was told that ObjectDB supports sequences if specified in the JDO file. Unfortunately, it doesn't seem to be supported consistently. It appears to work only in

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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