About availability

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SSL Problem

Hello, I have a problem to use the server with ssl. I have created the certificate using this command: keytool-genkeypair-dname "cn = Mark Jones, ou = JavaSoft, o = Sun, c = U.S."-alias business-keypass kpi135-keystore-storepass mykeystore ab987c-validity 180 Then I put in the configuration file objectdb: #1 2012-12-16 11:51 Hello, I have a problem to use the server with ssl. I have created the certificate using this command: ...

 
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Storing methods?

I don't think ObjectDB does this, but I want to ask to make sure: are methods stored in the database along with data?  Thanks. #1 2013-09-03 15:26 I don't think ObjectDB does this, but I want to ask to make sure: are methods stored in the database along wi ...

 
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enhancement issue

Hi, still struggling with the enhancement issue. So, this works fine in development: static void main ( String[] args ) {     com.objectdb.Enhancer.enhance ( "app.model.*" ) ....   } } But in deployment, when the jar files is made with ShadowJar, this error occurs at runtime: #1 2017-10-12 03:20 Hi, still struggling with the enhancement issue. So, this works fine in development: static ...

 
forum_thread

CAP theorem and object DB

Can someone please explain ObjectDB falls into which category of CAP theorem ? C : Consistency, A: Availability , P : Partition Tolerance  Example:  CA ==> SQL Server, Oracle, Sybase, MySQL CP ==> MongoDB, HBase, Redis, MemCache  AP ==> Cassandra, CouchDB, DynamoDB is ObjectDB fall under CA category ? ... category of CAP theorem ? C : Consistency, A: Availability , P : Partition Tolerance  Example:  CA ...

 
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Extended mapping-definitions

The described feature is not available in any object-db I know, but possible with mapping to a relational DB, for example with Hibernate.   By default every entity of the real world (respectively its class) gets mapped to a java class. So cats get mapped to the java class 'Cat', dogs to 'Dog' and so on. In the project for which I'm evaluating objectDB, there 1.) will be hundreds of classes and 2.) not all classes are known at project start (an editor). #1 2013-04-11 17:04 The described feature is not available in any object-db I know, but possible with mapping to a relational DB, for ...

 
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Some details about db behavior

Suppose I have two entities... A B -> A B has a ManyToOne relationship with A. When my database is empty and I persist a valid B entity (that contains actual A reference) I observe some behaviour that I'm not sure I understand. #1 2014-06-26 15:16 Suppose I have two entities... A B -> A B has a ManyToOne relationship with A. ...

 
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SelfTest and com.objectdb.Doctor

Dear Objectdb-Team We're really pleased with objectdb. Nevertheless we would like to ask for an 'extra' feature. The class 'com.objectdb.Doctor' enables a self-test for a given Database. We would like to make a self-test before every start of the database (i.e. the server). In case of fails or errors we would like to repair the database and/or inform the customer. #1 2015-10-29 10:27 Dear Objectdb-Team We're really pleased with objectdb. Nevertheless we would like to ask for an ' ...

 
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Detaching objects after JOIN FETCH

Hi, I have a question about detaching objects after issuing query with JOIN FETCH. Let's say I have two classes: public class A { @ManyToOne B bClass } public class B { @OneToMany(fetch = FetchType.LAZY, cascade = CascadeType.ALL) List<A> aClasses; } Now, I want to fetch all B classes with all A classes skipping lazy loading: #1 2012-07-11 07:50 Hi, I have a question about detaching objects after issuing query with JOIN FETCH. Let's say I have t ...

 
api-jdo

nextValue()

Returns the next sequence value as a long.(Method of javax.jdo.datastore.Sequence)

 
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ObjectDB stability after power failure

I'm considering using ObjectDB in a system that is going to be running continuously without support instantly available for many years.  How stable is ObjectDB when it comes to power failures and unattended restarts?  Is database integrity maintained during such events?  I have seen database vendors perform 'kick the plug out' demonstrations of how their product will survive power failures.  Is ObjectDB suitably robust that it won't fail in such situations?    #1 2014-05-21 00:39 I'm considering using ObjectDB in a system that is going to be running continuously without support instantly ...