Fast Object Database for Java - with JPA/JDO support

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ClassCastException of same object type

am now trying to abstract the data storage so that different types of storage are possible in order

Can't get arraylist/vector type attributes

I have a class that contains some attributes of type Vector (also tried with ArrayList and same happens). When I try to get an object from that class doing using the find method it works fine, I get the object. But when I call the close method to close the EntityManager the information from

Entity Type is not found (error 301) in Query

] select u from ==> User <== u where = :email javax.persistence.PersistenceException Type

_PersistenceException: Type is not found on getSingleResult.

._PersistenceException: Type Estudiante is not found For this query: select est from Estudiante est

Eager Fetch is not stable for collection or map types?

Hi, thanks very much for your helpful software. The problem is the storage of collection or map types is not stable, we lost them sometimes after JVM restarted. Eager fetch is properly set.And we still found that the storage is stable when we not use generic, such as "private List users = new

type in serParameter -> setParamether

type in serParameter -> setParamether ravshansbox Ravshan Thanks. It was fixed now to setParameter. support Support

Wrong type on SUM function

that have only one object with a BigDecimal value that has no decimals, for this group it returns a Long type value

multi EntityManager with Spring Boot, but 'Too many persistable types (>10)

I'm trying to use two EntityManager with Spring Boot, but no luck with 'Too many persistable types (>10) - exceeds evaluation limit' at second database. My purpose is converting database (converting model entity. same class name but different package). Single application with Spring-Boot 2.1.8

Activated ObjectDB still throws "Too many persistable types"

I have upgraded from 2.3.7 to 2.4.4 and now my activation won't work, throwing the dreaded com.objectdb.o.UserException: Too many persistable types (>10) - exceeds evaluation limit I have already reactivated and checked that my objectdb.conf is correctly used (by inserting random chars

@ElementCollection of type enum

@ElementCollection of type enum

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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