About cache

forum_thread

Optimization of Map Queries

hi! I am having loads and loads of occurrences of something like ((com.test.MyEntity) $1.map.get('com.test.MyEntity')).someProperty ... ((com.test.MyEntity) $1.map.get('com.test.MyEntity')).someOtherProperty .. ((com.test.MyEntity) $1.map.get('com.test.MyEntity')).someMoreProperties I need to use full qualified names for casting as well as for the map keys because same entity simple names may occur multiple times. Now I've got two questions: ... got two questions: 1) Will odb smart enough to cache the map.get(..) result(s) once to not query the map again and again for ...

 
api-jdo

unpinAll(oids)

Unpin the parameter instances from the second-level cache.(Method of javax.jdo.datastore.DataStoreCache)

 
api-jpa

SharedCacheMode.UNSPECIFIED

Caching behavior is undefined: provider-specific defaults may apply.(Enum Constant of javax.persistence.SharedCacheMode)

 
api-jpa

clearCachedProviders()

Clear cache of providers.(Method of javax.persistence.spi.PersistenceProviderResolver)

 
forum_thread

Post-compile enhancement fails when static Log4j 2.5 based logger used in Entity

I doubt this is an ObjectDB-enhancer problem, I am however reporting it in case anybody else encounters the problem too. It is mostly also not a concern for my own web app, because in most cases a non-static logging variable can be used in an @Entity.     ObjectDB 2.6.3_04     Apache Log4j2 - 2.5     Mac OS X     jdk1.7.0_51 or jdk1.8.0_60     NetBeans 8.1Beta ... see that link for examples). My LoggerWrapper offers a cache of loggers keyed to classes for lookup: public final ...

 
forum_thread

The server cannot start in CentOS

Hi, I try to run ObjectDB from Linux, but failed. My command is: java -cp objectdb.jar com.objectdb.Server start The result is attached. After typing the command, the system seems halting. ... = "true" /> <processing cache = "64mb" max-threads = "10" /> <query-cache results = "32mb" programs = "500" /> </database ...

 
forum_thread

Exception on creation when running multithreaded

Hi, I'm trying to test the creation of an object from my datamodel(Organisation) and the creation process includes the creation of an acl for the newly created organisation all in the same transaction. The process is as followed: 1. The organisation gets created 2. The acl is being searched to check if it already exists 3. if it exists it will be updated, otherwise it will be created   ... may indicate an ObjectDB bug in transaction isolation or cache management. Anyway, a test case that reproduces the problem would ...

 
forum_thread

ObjectDB's Database Doctor Incorrect Error Report

Am I reading this correctly?  It seems that Doctor is telling me that one of my objects is missing.  Looking at the database with ObjectDB's Database Explorer though seems to show that the reference to the object is good and that the object does indeed exist.   Output from Doctor Diagnose and Doctor Repair is attached.  So are the two databases and screenshots of Explorer showing the reference to the object and the existence of the object. #1 2016-08-13 16:33 Am I reading this correctly?  It seems that Doctor is telling me that one of my objects is missing.  Lo ...

 
forum_thread

Optimistic locking: prevent version increment on entity collection attribute

Hello, I have an entity E with an attribute which is a collection of entities (one to many relationship) with an optimistic locking strategy supported by a version field. Is it possible to prevent the increment of the version of entity E when entities are added to or removed from the collection? Something like the equivalent of @OptimisticLock(excluded=true) in Hibernate? Thanks, Farid #1 2013-04-30 15:49 Hello, I have an entity E with an attribute which is a collection of entities (one to many relationship) ...

 
forum_thread

Compile time enhancement using build.xml of a Netbeans web application

Does anybody have a complete, working example of the adaptations required in the build.xml of a Netbeans web application project to specify ObjectDB compile time enhancement, for both single file and whole project compilation ? The ObjectDB 2.3 manual gives the following tip: ... .sig files, rather than .class files, to the NetBeans cache, and side-steps any build.xml commands. I can easily apply the ObjectDB ...