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Data migration from SQLServer to ObjectDB

Hi, could someone recommend a good tool to use for data migration from SQLServer to ObjectDB. irene05 irene lan Unfortunately there is currently no such automatic tool. Using a JPA ORM library (e.g. Hibernate or EclipseLink) you can write your own conversion program that retrieves data from

@Column( name = "columnName") doesn't work

. Could you explain how can I fix this problem? Harman Alexander Golyshkin ORM/SQL annotations are silently

mappedSuperClass and subClass Duplicates

applications that use an ORM-based JPA provider (such as Hibernate, TopLink, EclipseLink, OpenJPA, JPOX

Entity is not related to ObjectDB, but i get exception from ObjectDB

Here is the description of the problem we are facing:
We have an entity DialogActionNew which previously was located in ObjectDB and recently has been transferred to PostreSQL. We are using ORM Hibernate
When getting this entity from PostgreSQL with the key EntityManager.find(id), we receive

Searching lists within objects

) at org.springframework.orm.jpa.SharedEntityManagerCreator$DeferredQueryInvocationHandler.invoke

Unexpected exception (Error 990) on find

.java:597) at org.springframework.orm.jpa.SharedEntityManagerCreator

ObjectDB 2.6.0

Added support of JPA 2.1 persistence.xml and orm.xml formats. Added implementation of equals to JPA Metamodel attributes. Fixed ObjectDB OSGi bundle to support enhanced classes. Fixed handling class loader switch (avoiding automatic database close and reopen). Fixed a NullPointerException

error 990 ?

.invoke(Unknown Source) at java.lang.reflect.Method.invoke(Unknown Source) at org.springframework.orm

Unique Constraint Ignored

If i annotate a getter with: @Column(unique = true) it's simply ignored. If i use @Unique it works perfectly. mosi0815 Ralph Moser Usually ObjectDB silently ignores ORM annotations. This is not a bug (it is documented). However, since this may make switching from other JPA implementations

ObjectDB 2.3.3

support of @Column(unique="true") and equivalent ORM XML (issue #550). Fixed @PrePersist on merge

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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