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Pre-detach loading: retrieval by navigation not working in if statement

: objectdb.temp.no-detach NOT USED This problems only seems to occur in my large web application. I know ... application parallel to the large web application, but the problem does not happen in the smaller web ... operations (while "visiting" the loaded managed entity) to load and fetch desired values. In addition

Occasionally slow requests in load testing

, however there are quite a few "spikes" in the performance where we are getting a lot of very slow ... we can see that most of the requests get stuck in one of 2 places: com.objectdb.o.PGC:w: line number ... threads in the db server process and it is configured for 400. The server it is running on looks

Explorer in 2.3

First, the new Explorer in ObjectDB is fantastic! This is exactly what we've needed - an easy way ... . Then allow import of that file into another database. 2. Lazy loading of data, especially in table view ... movement of the scrollbar also causes large pauses (> 30 seconds in some cases). I am using remote

Eclipse Public License - v 1.0

OF THIS AGREEMENT. 1. DEFINITIONS "Contribution" means: a) in the case of the initial Contributor, the initial code and documentation distributed under this Agreement, and b) in the case of each subsequent ... which: (i) are separate modules of software distributed in conjunction with the Program

Index Definition

Querying without indexes requires iteration over entity objects in the database one by ... . Index management introduces overhead in terms of maintenance time and storage space, so deciding ... ; // unique } @Unique represents a unique index that prevents duplicate values in the indexed field

JPA Persistable Types

The term persistable types refers to data types that can be used for storing data in the database ... can be stored in the database directly. Other persistable types can be embedded in entity classes as fields. In addition, only instances of entity classes preserve identity and are stored

Explorer bug ? Objects seem to be missing from database in Class view, but are present as references

.Source [null](TEST: a 2nd source in (1st project)) INFO: RequestBean []: Persisted: com.greensoft.entity.Source [4](TEST: a 2nd source in (1st project)) INFO: RequestBean []: Created: com.greensoft.entity.Source [null](TEST: a 3rd source (in 2nd project)) INFO: RequestBean []: Persisted: com.greensoft

GROUP BY and HAVING clauses

clause in the query execution order is after the FROM and WHERE clauses, but before the SELECT clause. When a GROUP BY clause exists in a JPQL query, database objects (or tuples of database objects ... over all the Country objects in the database. The GROUP BY clause groups these Country objects by

Storing JPA Entity Objects

New entity objects can be stored in the database either explicitly by invoking the persist method ... an instance of the Employee entity class in the database: Employee employee = new Employee("Samuel ... and changes its state to Managed. The new entity object is stored in the database when the transaction

Once served to JSF page via @EJB query bean, many list fields are null (but same query ok after fresh persist in @PostConstruct)

, the inability to robustly query relationship fields in a web application renders the ObjectDB ... showing the query result in indexTest.xhtml. The problems is illustrated by running the attached JavaEE ... via a querying @EJB gives many fields null (and not even empty, I mean truly null). In the following

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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