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Criteria Query results in a NoResultException instead of returning object

.authenticate(IdentityImpl.java:284) ... 45 more Even though there exists an object that matches the query (check attached screen shot). Should the query be returning an object or am I doing something wrong ... of the criteria query returns an object: String queryStr = "select i from

"Attempt to lock a non entity object" error

Probably a simple answer for someone who's been using ObjectDB for awhile: I'm reading objects from ... object" session.rollback() is somehow causing the problem (found through debugging ... ------------------------------------------------------------- Attempt to lock a non entity object

Listing large number of complicated objects with paging.

to build wrapper object ProductTO that contains only fields that I need in listing and the use new ... runs blazing fast (22ms) but I think it's because Explorer lazy loads all that objects and load ... query manager fetchSize is like all objects in database: <newQueryResponse isUnique="false

Storing Images and Object Pooling

it will be good if you make object pooling for every class.We dont know about your codes but i think it will be very good if you make object pool. kadirbasol Kadir BASOL You should be able to use ObjectDB successfully as an image database. ObjectDB includes many types of cache mechanisms, including object

Object belongs to another EntityManager - ERROR

[stderr] (http-- Failed to commit transaction: Object 'pbdmodel.impl.OrgJedinicaImpl ... .UserException: Object 'pbdmodel.impl.OrgJedinicaImpl#8' belongs to another EntityManager 10:29:15,072 ... -- Caused by: com.objectdb.o.UserException: Object 'pbdmodel.impl.OrgJedinicaImpl

Delete object from collection versus delete from JPQL

relationship between the objects in memory and ObjectDB. I know I can modify the objects and use ... objects? There are cases where the JPQL syntax is more expressive than operating on a collection ... and DELETE queries bypass the EntityManager entity object management, and accordingly break

Is ObjectDB the only object database that supports JPA?

Other Object database doesn't support JPA? Manikandan ManikandanPalaniappan JPA is designed as an API for Object Relational Mapping (ORM), so many JPA features cannot be supported by regular object ... (relational databases), which are not supported by most object databases. ObjectDB does support

spuriously objectdb objects have null references

from time to time we have in a multi threaded environment objects where all the references are null ... methods and protected them with synchronized like: ... private static Object lockBegin = new Object(); public static void begin(EntityManager threadEntityManager){ synchronized(lockBegin

Navigation through lazy loading from Detached Objects

A main limitation of detached objects (as explained on the Detached Entities manual page) is: Retrieval by navigation from detached objects is not supported, so only persistent fields that have been loaded before detachment should be used. As explained on the Object DB vs EclipseLink/TopLink

Cannot insert more than about 2^20 objects

Hi I have a DB with 4 entities and a total of 4 index. Once I reach 1048565 total objects in the whole DB, i am unable to insert more object, although i get NO error message nor exceptions. Doctor said Db is fine (see below) I notice that 1048565 objects + 4 entities + 4 ID indexes + 4

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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