About ORDER BY

api-jdo

javax.jdo.JDODataStoreException

This class represents data store exceptions that can be retried.(Exception of JDO)

 
api-jdo

javax.jdo.JDOFatalDataStoreException

This class represents data store exceptions that cannot be retried.(Exception of JDO)

 
api-jdo

javax.jdo.JDOOptimisticVerificationException

This class represents optimistic verification failures.(Exception of JDO)

 
api-jpa

javax.persistence.CacheRetrieveMode

Used as the value of the javax.persistence.cache.retrieveMode property to specify the behavior when data is retrieved by the find methods and by queries.(Enum of JPA)

 
api-jdo

javax.jdo.JDOCanRetryException

This is the base class for exceptions that can be retried.(Exception of JDO)

 
api-jdo

javax.jdo.JDOFatalUserException

This class represents user errors that cannot be retried.(Exception of JDO)

 
api-jpa

multiselect(selections)

Specify the selection items that are to be returned in the query result.(Method of javax.persistence.criteria.CriteriaQuery)

 
forum_thread

First query takes 4+ minutes to complete

Hi, we are evaluating ObjectDB 2.5.1_04 in embedded mode hoping to replace SQLite in our application. We observed that in our case it takes on average more than 4 minutes to complete the first SELECT query that we run on the DB which contains about 320,000 records of a single type of object. SQLite in comparison responds within few seconds on average with the same number of records. We hope to receive your recommendation on how to improve this result with this post.   Test System ... SELECT r FROM RecordingMetaData AS r ORDER BY r . startDate DESC , r . startTime DESC , r . ... the application and let is stabilise for about 60 seconds. By this time a number of new records are already being added by one of the ...

 
forum_thread

IN expression in a Criteria Query

Hello, I am trying to migrate my Spring project from Hibernate to ObjectDB. On ObjectDB page, it is written that ObjectDB is 100% compatible with JPA. However, I have problem with this JPQL query: SELECT e FROM Employee e WHERE e.present = false AND NOT EXISTS (SELECT c FROM Computer c WHERE c.employeeEntity = e) ORDER BY e.name with Hibernate, there was no problem with this query, but ObjectDB throws exception: ... c WHERE c. employeeEntity = e ) ORDER BY e. name with Hibernate, there was no problem with this query, ... are several JPA features that are currently not supported by ObjectDB. They are listed in the issue tracking system , and ... page, sorry about that. I was generating metamodel by myself. I replaced it with "employeeEntity", but the result is the same. ...

 
api-jpa

multiselect(selectionList)

Specify the selection items that are to be returned in the query result.(Method of javax.persistence.criteria.CriteriaQuery)