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package not found running ObjectDB under OSGi

datamodel.core.base is not found by the enhancer (error 108) The Enhancer was run in the following way ... you have a bug ?? Thanks in advance b Tomasz Tomasz Wozniak This is not a bug but a limitation. Java doesn't ... of specific file based class loaders (by scanning the file system) but not in the general case

Running ObjectDB on a node that does not have internet connectivity

Upon initializing our ObjectDB database on a node that does not have a connection to the outside ... beta version, in which the dtd file is not available locally. Please switch to the last 2.0 RC ... to access the Internet might still happen if the XML headers of the package.jdo files do not match

Metamodel Attribute NOT EQUALS to same Attribute in a different EntityManager

Attribute from Metamodel initialized on @PostConstruct event IS NOT EQUALS of the same Attribute ... am testing one application over Spring Web MVC and I can not post one Simple Test Case. The problem ... and the other on a @Controller @RequestMapping event, they return not equals Attributes using

Field not persisted in abstract class with two level of nesting

Hi, I have a field (embedded TZ1) which is not persisted in class MHD1 (TZ1 extends AS and AS ... because it is not public. Adding public to the definition of the abstract class (AS) solves the problem. This concrete subclass may be needed for some uses, but starting build 2.5.6_02 it will not

makeTransient() not working on Embedded class

._JdoUserException: Type quant.phdsc_new.placement_builder.data.Project is not defined as an entity ... am using JDO and PMImpl. Should I not call the makeTransient() on an @EmbeddedOnly object ... objects are not managed by their own and cannot change state from managed to transient. support Support

substring works with string but not with char

, the query does not return anything. i think it should also be possible to use char/Character types, do you agree? chris Christoph Ernst I am not sure that this comparison is valid, since the type ... ) is Character. In ObjectDB as in Java char is comparable to int but not to String. Maybe an exception

Objectdb ignores not null annotations

I'd like to mark field of an entity not nullable so that when developer tries to persist such entity exception gets thrown... I've tried @Column(nullable = false) (i even tried @NotNull which is not ... or primitive) not nullable... Regards vachagan Vachagan Please see the answer in this forum thread. support Support

DB persist operation results are not available for another Thread/EntityManager immdiately

a query. But there are not any results available. We debugged the problem. Thread B executes the query and prints the results to the console, but there are not results. After that the thread stops ... then the problem does not happen. Can you imagine or explain this timing problem? btc_es BTC

Sometimes cascade persist does not work during commit

A, afterwards not persisted entities B are added to entity A. At the end a commit is executed ... work correctly, so that entities B are not persisted. Unfortunately we cannot reproduce this bug in ... we currently do not have any information about such issue. support Support Hello, for this bug

Can not have unique index on Byte Array

EKO FAJAR Unique is implemented by ObjectDB by an index that does not allow duplicate keys. An index ... are different. support Support Note also that an index on a collection or array will not be useful in ... '} will throw Unique exception because of duplicate element 'a'? Thanks. eko EKO FAJAR Strings are not

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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