About null

release

2.6.1

... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ...

 
release

2.5.3

... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ...

 
manual

JPA Entity Fields

Explains how to define and use primary keys in JPA, including composite and embedded primary keys.... the database every persistent field must contain either null or a value of one of the supported persistable types . ObjectDB ... type of the actual value at runtime is persistable (or null ). Every persistent field can be marked with one of the following ...

 
release

2.7.0

... a NullPointerException  due to unexpected null SharedCacheMode in PersistenceUnitInfo. Fixed a ... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ...

 
manual

JPA Query Expressions (JPQL / Criteria)

Describes JPA query (JPQL / Criteria API) expressions (literals, operators and functions).... : =, <>, <, <=,>, >=, IS [NOT] NULL, [NOT] BETWEEN, including  Collection operators: [NOT] ... CriteriaBuilder's method Create an expression for a null literal with the given type. See JavaDoc Reference Page... , ...

 
release

2.4.7

... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ... Changed non loaded collections on detachment to null (rather than empty collections ). Fixed a critical bug ...

 
release

2.6.0

... Fixed a bug in comparing String based enum to   NULL in queries. Fixed an activation issue with hosteurope.de ( ... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ...

 
release

2.5.2

... Fixed Doctor's index rebuilding to use NULL values for missing values of new fields. Fixed a bug in ... clearing). Fixed the Explorer to show null values in primitive fields (unset values in new fields) correctly. ...

 
forum_thread

Date field Index is corrupted due to time change

Hi, can you shed some light on why we cannot delete data from the attached DB file. A delete attempt with DB explorer results in the following exception: ... com. objectdb . o . InternalException : null com. objectdb . o . InternalException at com. objectdb ...

 
forum_thread

Query perfromance problem

Hi, I was playing with paging and sorting recently and after trying few different aproaches got some strange behavior from ODB. First of all, I will show you results from page rendering times, but trust me - when debugging application, getting data from ODB takes a long time in one case. Anyway, one of my methods in DAO looks like this: ... ) ; List<Product> prodList = null ; TypedQuery<Product> icQuery = null ; if ( sortColumn == null ) { ...