About Object Database

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Manual
21

SELECT clause (JPQL / Criteria API) [2013-03-11]

that JPA provides for managed entity objects, including transparent navigation to other database ... The ability to retrieve managed entity objects is a major advantage of JPQL. For example, the following query returns Country objects that become managed by the EntityManager em: TypedQuery
Manual
21

SELECT clause (JPQL / Criteria API)

that JPA provides for managed entity objects, including transparent navigation to other database ... The ability to retrieve managed entity objects is a major advantage of JPQL. For example, the following query returns Country objects that become managed by the EntityManager em: TypedQuery
Manual
19

DELETE Queries in JPA/JPQL

As explained in chapter 2, entity objects can be deleted from the database by: Retrieving ... entity objects from the database. Removing entity objects from the database using a DELETE query ... all the objects in the database: DELETE FROM Object DELETE queries are executed using the executeUpdate
Manual
19

JPA Entity Fields

otherwise (e.g. by using the @Transient annotation). Storing an entity object in the database does not ... . When an entity object is stored in the database every persistent field must contain either null or a value ... in the database for the first time) is 1. For every transaction in which an entity object
Manual
18

Defining a JPA Entity Class [2018-10-20]

To be able to store Point objects in the database using JPA we need to define an entity class ... (annotated) as having the ability to represent objects in the database. Conceptually this is similar ... , and accordingly, provides the ability to store Point objects in the database and retrieve Point
Manual
18

Defining a JPA Entity Class [2011-02-11]

To be able to store Point objects in the database using JPA we need to define an entity class ... (annotated) as having the ability to represent objects in the database. Conceptually this is similar ... , and accordingly, provides the ability to store Point objects in the database and retrieve Point
Forum
18

Soft Reference Object Cache Recommendation

size limit being exceeded before the post attempt.  =(  ) I desire to have my persistent objects ... objects before more recently accessed ones.  I attempted to use Java SoftReference to my large byte[] and instruct ObjectDB to use soft reference for its Level One (L1) object data cache.  I disable the L2
Forum
18

Time Sequence Object Command DB

We (www.s2ssystems.com) have a time-sequential object command database.  I would like ... commands are generally used to trigger creation of transient objects.  The database can be branched ... again that the database is not an object database, but rather a command database.  You can of course
Issue
18

each 1-2 days objects on some objectdb level lock/block each other

objects and updates by type per minute), etc. a link for downloading the up to date 60GB database ... queries without any object manipulation in these threads we how have compiled with the 02 version ... (0x00000000bc88c318) is related to reading from the database file using the new "objectdb.temp.concurrent
Manual
18

Shared (L2) Entity Cache [2011-09-20]

the database and added to the shared cache. On commit - new and modified entity objects are added ... Every EntityManager owns a persistence context, which is a collection of all the entity objects ... an entity object that is already managed by the EntityManager returns the existing instance from