About getting started

forum_thread

JVM crash when using IBM JDK 1.6.0

The FAQ states in the system requirements only that a JDK/JRE 1.5 or 1.6(prefered) is required. When I try to use the IBM JDK 1.6.0 I get a GPF exception while creating the entity manager. Looks like a call to putInt on sun.misc.Unsafe object Does this mean there is a BUG in the IBM JDK or are not all JDK's supported? #1 2011-06-07 02:03 The FAQ states in the system requirements only that a JDK/JRE 1.5 or 1.6(prefered) is required. When I tr ...

 
forum_thread

Exception after update of indices of Entity class

Hello, I changed the index definition of an entity class from @Index()... to @Indices() and now I get the following stacktrace upon start: #1 2017-08-03 13:18 Hello, I changed the index definition of an entity class from @Index()... to @Indices() and now I get the ...

 
issue

Sometimes the ObjectDB throws an internal expeption if a persist() was executed

[ObjectDB 2.6.6_08] Unexpected exception (Error 990) Generated by Java HotSpot(TM) 64-Bit Server VM 1.8.0_51 (on Windows 7 6.1). Please report this error on http://www.objectdb.com/database/issue/new com.objectdb.o.InternalException: java.lang.NullPointerException: null java.lang.NullPointerException at com.objectdb.o.OBM.bE(OBM.java:395) at com.objectdb.o.OBM.bE(OBM.java:269) at com.objectdb.jpa.EMImpl.persist(EMImpl.java:442) ... not an ObjectDB issue. The problem is just that we started our application without OEM enhancement on a machine without an ...

 
forum_thread

Recursive calls with @PreUpdate annotation and Glassfish OutOfMemoryError

Hi,    I've had an issue that started today and it's got me stumped. I've got a subclass User, which extends a BaseEntity. The BaseEntity has a @PreUpdate as per: ... Hi,    I've had an issue that started today and it's got me stumped. I've got a subclass User, which ...

 
forum_thread

g when using SIZE in combination with date lower parameter

Hello, I have 2 entity types, which I want to query, ParserJob and Tag. Unfortunately there seems to be a bug if I use the lower date select: SELECT j.jobId, SIZE(j.tags) FROM ParserJob j WHERE j.dateCreated < :date This returns a SIZE(j.tags) of 0 Tags, but the only existing ParserJob has 1 Tag. If I run the query: SELECT j.jobId, SIZE(j.tags) FROM ParserJob j WHERE j.dateCreated >= :date I get the correct result (1 Tag). #1 2017-11-10 10:46 Hello, I have 2 entity types, which I want to query, ParserJob and Tag. Unfortunately there seems to be a ...

 
forum_thread

Recommendation - concurrent access multiple class v

Hi! I've just started to architect a new system, stateless JSON API, which is expected to have very high load and to require more servers for parallel deployments (same app across multiple servers). I am considering using ObjectDB, because of its advantages and easy usage, but I'm afraid that it might get corrupted because the manual says that we must not access ObjectDB with different versions of a class. Let's take the following scenario: ... Hi! I've just started to architect a new system, stateless JSON API, which is expected to ...

 
forum_thread

Internal ObjectDB error by read the primary key

Sometimes we get the following exception, when we start our software.   #1 2016-02-18 08:31 Sometimes we get the following exception, when we start our software.   java.lang.NullPointerE ...

 
forum_thread

Left join fetch behaviour doesn't retrieve children?

Hello support, I'm a little bit confused about a left join fetch behaviour. In this test case, i try to fetch my 3 children using a left join fetch. But my collection is null after closing the em. It was expected to be fetched before closing the em, no ? In fact, that is the objective of the fetch purpose (i guess ?). #1 2015-06-07 07:34 Hello, I'm a little bit confused about a left join fetch behaviour. In this test case, i try ...

 
forum_thread

How to open a running db in ObjectDB Explorer?

Hi! I've just discovered that I can't see the content of a database while it's in use. Is there any way in which I could do that? It's not nice at all to close the application, copy the db in another location, start the application then finally I could explore my data, but it will be just a copy of the data, not the live information. ... Hi, I am getting the following error when trying to open a database: "Attempt to ... Hi, I finally started ObjectDB in Client-Server mode.   ...

 
forum_thread

Using Enum type in NamedQuery: Field is not found in type

I'm trying to switch an application that worked fine in Hibernate to ObjectDB and am having issues with queries that reference enum types. On my entity object is a static enum public static enum Type {     A,B,C } that is stored in an @Enumerated member variable private Type type; @Enumerated public Type getType() {     return type; } I then try to query this field in the following JPA Named Query ... I have noticed that my entities seem not to be getting picked up as entities until they are first persisted - Hibernate used ... classes and create tables before the application even started whereas my ObjectDB database file isnt being created until the first ...