About Object Database

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Forum
17

ClassCastException of same object type

I have ObjectDB partially working with my project. At the moment it seems to be saving objects and retrieving objects ok in the main project. However, when I make a plugin for the project, the new objects are persisted but not retrieved. I get the following error: java.lang.ClassCastException: org
Forum
17

Database(*.odb) file size on disk

objects but the database is never resized to a smaller file. Currently the only way to make ... Hello, we have questions about the file size of ObjectDB database on disk. Can you tell ... memory always used by new entities? -Will be the database file automatically reduced?   We have created
Forum
17

removed objects stay with null field values in the reference

from the database, even if the object is not removed from the set explicitly. just to make sure ... is still in the database and loaded by a subsequent lazy loading ? No, after deleting an object it does not exist in the database anymore. But you may still have broken references to that object, like links to a web page that doesn't exist. hgzwicker
Issue
17

Corrupt database page

Hello, we have encountered an issue, where a page of the database became corrupt. We are wondering ... . All rights reserved. Scanning the database file... ........................ 193MB (total) Analyzing database structure... 10% 20% 30% 40% 50% 60% 70% 80% 90% 100% BTree Value Errors
Forum
17

GWT RPC is throwing serialization exception when I have object db date value

. But in the database it seems to be stored a a objectdb.* type. Persisting new objects ... its Class object could not be loaded. For security purposes, this type will not be serialized.: instance ... for all of mine Data Transfer Object. But still I am getting this error. Note: (In gwt RPC you cannot use
Forum
17

Storing Images and Object Pooling

an image database. ObjectDB includes many types of cache mechanisms, including object pooling. To use ... Hello we have heard your product and we will plan to use your product on image database. Is it good to use ObjectDB as image database? Image database just screenshots of desktops.   2- ) On JPA as
Forum
17

Corrupted Database or error in ObjectDBExplorer?

. Only when an object is stored in the database (e.g. during update) with a schema that doesn't include field ... Hello, we have problems when we open our Database file with the ObjectDB-Explorer (2.6.8_b8 ... the Database-File? An analysis with the DB-Doctor found no problems.   We observe the error if we try to open
Manual
17

Running JPA Queries

(with getResultList) The following query retrieves all the Country objects in the database. Because multiple ... object reflecting the number of Country objects in the database: TypedQuery query = em ... on the database content. For example, the following query is expected to return a single Country object
Manual
17

Running JPA Queries [2011-09-21]

(with getResultList) The following query retrieves all the Country objects in the database. Because multiple ... object reflecting the number of Country objects in the database: TypedQuery query = em ... on the database content. For example, the following query is expected to return a single Country object
Forum
17

Multi-Threading/Distributed-Database Questions...

Greetings ObjectDB team, All below questions assume a very large database (~1,000,000,000 objects ... objects on both, i.e. distributed database/graph of objects ? Kind Regards and Thanks ! Activity ... thread. References from objects in one database to objects in another database are not supported