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evictAll() behavior

I'm writing a multi-user drawing tool, using objectdb as the central store.  When a user press F5, I want to pick up all the changes from the database.  So, I call evictAll() in the following ways: pmf.getDataStoreCache().evictAll();  // the factory pm.evictAll();                                 // the persistence manager A couple of questions about this: 1. the first evictAll() seems to be clearing the L2 cache -- is this correct 2. the evicts only work when they are done inside a transaction -- is this specified in the JDO spec? #1 2010-12-08 23:57 I'm writing a multi-user drawing tool, using objectdb as the central store.  When a user press F5, I want to ...

 
release

2.7.1

Release date: 2017-04-06 Download (5.58 MB) Binary:  objectdb-2.7.1.zip Version 2.7.1 Fixed a critical bug that may cause database ...

 
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Externalising persistence.xml properties in Glassfish?

Hi, #1 2011-04-23 08:43 Hi,   I've run into a little bit of a wall with regards to persistence.xml and externalising the ...

 
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FileNotFoundException

I'm sometimes getting this exception.  Is there a simple answer to why it's occurring?  (It could take some time to produce code that results in this exception reliably). #1 2017-08-29 19:43 I'm sometimes getting this exception.  Is there a simple answer to why it's occurring?  (It cou ...

 
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Selective merge/cascade of detatched entity

I'm having an issue with my application, and I'm hoping you guys will be able to help. Please forgive typos and obvious errors, I'm having to retype from a non-internet connected network. A contrived example is: #1 2012-11-16 15:20 I'm having an issue with my application, and I'm hoping you guys will be able to help. Please forgive typ ...

 
release

2.7.0

Release date: 2017-03-09 Download (5.58 MB) Binary:  objectdb-2.7.0.zip Version 2.7.0 Extended maximum supported entity object size ...

 
release

2.6.9

Release date: 2016-08-10 Download (5.58 MB) Binary:  objectdb-2.6.9.zip Version 2.6.9 Added support for integration with WebSphere ...

 
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Empty temporary dat files in the temp folder

Hello, We have questions regarding the pagesX.dat files in the temp directory. We detected a problem on a machine with ‘only’ 2GB free memory on disc drive C:/ because during using our Product the %temp%/objectdb_123... folder growth up to 2GB. And then we run into some following errors due to lack of memory. #1 2016-08-09 07:32 Hello, We have questions regarding the pagesX.dat files in the temp directory. We detected a pro ...

 
manual

DELETE Queries in JPA/JPQL

Explains how to apply server side bulk delete using a JPA/JPQL query. As explained in chapter 2 , entity objects can be deleted from the database by: Retrieving the entity objects into an EntityManager . Removing these objects from the EntityManager  within an active ...

 
manual

Paths and Types in JPQL and Criteria API

Explains how to use object expressions (path navigation, type) in JPA/JPQL. Instances of user defined persistable classes (entity classes, mapped super classes and embeddable classes) are represented in JPQL by the following types of expressions: Variables - FROM identification variables and SELECT re ...