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Advanced JPA Topics

Describes advanced JPA topics - detached entity objects, lock management and entity lifecycle events. This section discusses advanced JPA topics: Detached Entity Objects Locking in JPA ...

 
manual

Chapter 3 - Using JPA

Explains how to store, retrieve, update and delete entity objects using JPA.... CRUD Operations with JPA More advanced topics (e.g. locking and events) are discussed in the last section: Advanced JPA Topics ...

 
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Explorer in 2.3

First, the new Explorer in ObjectDB is fantastic! This is exactly what we've needed - an easy way to do ad-hoc JPQL queries and navigate through the results and even make small changes to primitive data and Strings. After playing with it for a while, here is a list of additional features I'd love to have: 1. Export of selected data: a. Simple - Select a range of cells or a column header and copy text to the clipboard or save to a file (csv, html, etc..). (There appear to be copy menu options, but I cannot get them to work.) ... to the right of the textfield which will open an 'advanced' dialog for setting the value. This dialog will allow me to enter ... I'm describing. Another possibility for this advanced editor would be to use the result of a JPQL query to set a value of an ...

 
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UserException: Invalid configuration in 'internal' - Check permissions

Hi all,   I have a master/slave code so that each slave reads a subset of points of the same database. ObjectDB entities do not allow serialization and so I have sent, to each slave, the file path. With such information I have tried to create an entityManager, in each slave, as follows: EntityManagerFatory entityManagerFactory = Persistence.createEntityManagerFactory(filePath); EntityManager = entityManagerFactory.createEntityManager(); However I get the following error #1 2014-07-01 18:39 Hi all,   I have a master/slave code so that each slave reads a subset of points of the same ...

 
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can we use objected with ehcahce?

Hello , I need advanced caching system. Terracotta ehcache provides us , advanced distributed cache mechanism.   Can we use objectdb with ehcache ?   ... 18:16 Hello , I need advanced caching system. Terracotta ehcache provides us , advanced distributed cache mechanism.   Can we use ...

 
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About LIMIT and OFFSET as query tokens

Hi,   I would like to know why the query tokens OFFSET AND LIMIT are not available and if they will be in a near future. Is there any equivalent way to get, from the database, the object at given position i as well as a given number of objects that follow such object? Thanks you in advance   MiguelGT       Thanks you in advance #1 2014-06-29 16:43 Hi,   I would like to know why the query tokens OFFSET AND LIMIT are not available and if th ...

 
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JBoss 7.1 and EAP 6 support

I understand that keeping up with a new version can be difficult. Having said that, JBoss 7.1.1 Final was released in early March and Enterprise Application Platform (EAP) 6, the fully supported version by RedHat which is based on 7.1, has been released recently. I would really like to use ObjectDB since I believe that I will need the performance gains you show. Is there a plan to support this version of JBoss? I would also like to ask when but I know timeframes are not really known in advance, let me just state that my project will need to go live in about 4 weeks. #1 2012-07-15 20:44 I understand that keeping up with a new version can be difficult. Having said that, JBoss 7.1.1 Final was release ...

 
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Table View for queries in the explorer ?

Hi Is there anyway to get the table view , rather than the tree view, when I'm running queries ?   Is there a more advanced version of the explorer anywhere ? Thanks Paul Newman ... running queries ?   Is there a more advanced version of the explorer anywhere ? Thanks Paul Newman ... the results are displayed using a table view. More advanced versions of the Explorer will be released in the future. If you need ...

 
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CASE WHEN...THEN...ELSE...END not working using JPQL/JDOQL

When I try to use the "case...when...then...else...end" like in the following query "SELECTCASE WHEN g.name="a" THEN "e" ELSE "o" END g from Guest g", I get the issue: Unexpected query token 'CASE' SELECT  ==> CASE <==  WHEN g.name="a" THEN "e" ELSE "o" END g from Guest g Have I mismatched something or is it an issue with ObjectDB? Anyone could help me on how to use the "case" in JPQL? Thank you in advance. #1 2016-07-29 06:59 When I try to use the "case...when...then...else...end" like in the following query "SELECTCASE WHEN g.name="a" T ...

 
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Consulting and Training

... the JPA specification in depth from the very basics up to advanced topics, performance tuning and production tools. This course does ... with ObjectDB and goes to exploring design alternatives, advanced JPQL, using ObjectDB with JEE (EJB) and with Spring, and ObjectDB ...