About retrieve

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About ObjectDB Database

ObjectDB is a powerful object oriented database management system (ODBMS). It is compact, reliable, easy to use and extremely fast. ObjectDB Object Database ObjectDB is a powerful object-oriented database management system (ODBMS). It is compact, reliable, easy to use and extremely fast. ObjectDB provides all the standard database management services (storage and ret ...

 
forum_thread

ObjectDB eclipse plugin

Hello, Creating an eclipse plugin from the downloadable objectdb.jar file DOES NOT work in the eclipse OSGi environment (at least that is my experience). Could we have a genuine eclipse plugin from ObjectDB that works? You already have a pluging that integrates Objectdb with BIRT, so it seems it should not be difficult. The downloads could now have both the eclipse plugin as well as the usual jar. Let me know what you think.   Thanks #1 2011-07-14 18:30 Hello, Creating an eclipse plugin from the downloadable objectdb.jar file DOES NOT work in the eclipse OS ...

 
manual

Deleting JPA Entity Objects

Explains how to use JPA to delete (remove) entity objects from the database. Existing entity objects can be deleted from the database either explicitly by invoking the remove remove(entity) EntityManager's method Remove the entity instance. See JavaDoc Reference Page... method or implicitly ...

 
forum_thread

Problem with polish characters

Hello! ... ObjectDB does not modify strings - when you retrieve a string from an ObjectDB database you should get exactly the same ...

 
forum_thread

Using of ConcurrentHashMap as attribute

Hello, it is possible to use an entity attribute of type java.util.concurrent.ConcurrentHashMap Your web site http://www.objectdb.com/object/db/database/features 'Object Model & Data Types' has no guidelines about this data type. Best regards #1 2015-05-13 06:26 Hello, it is possible to use an entity attribute of type java.util.concurrent.ConcurrentHashMap Y ...

 
forum_thread

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 the Vector dissapears and I get an empty vector. #1 2017-03-09 19:54 I have a class that contains some attributes of type Vector (also tried with ArrayList and same happens). When I ...

 
api-jdo

FetchPlan.fetchSize

The number of instances of multi-valued fields retrieved by queries.(Annotation Element of javax.jdo.annotations.FetchPlan)

 
doc

Exception(cause)

Constructs a new exception with the specified cause and a detail message of (cause==null ? null : cause.toString()) (which typically contains the class and detail message of cause).(Constructor of java.lang.Exception)

 
api-jpa

setFirstResult(startPosition)

Set the position of the first result to retrieve.(Method of javax.persistence.Query)

 
api-jdo

storeObjectField(fieldNumber, value)

Store one field into the field manager.(Method of javax.jdo.spi.PersistenceCapable.ObjectIdFieldConsumer)