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Access ClassTransformer

Hello, As in our OSGI Environment, we do need to manually weave classes. To be able to do so, we'd need access to the ClassTransformer from ObjectDB. However, there's only the global enhancer api which is not of any help. There's the JEhancerAgent which seems to implement a ClassTransformer as well though not sure whether to use that one..? Thanks! Alex #1 2011-11-15 00:48 Hello, As in our OSGI Environment, we do need to manually weave classes. To be able to do so, we'd ne ...

 
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Group by: list if no aggregate function is specified

Hello! In a query like SELECT parent, children FROM Parent parent LEFT JOIN p.children children GROUP BY parent maybe it would be good if it will return a list of Object[2], where the second object is a list of children of a parent. Because creating a query to get a list of parents, then fetching children list for each parent - not a good idea. Thank you. #1 2015-12-28 17:06 Hello! In a query like SELECT parent, children FROM Parent parent LEFT JOIN p.children children GROUP B ...

 
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Java 8 time API

Hi.   Is Java 8 new DateTime API supported natively or through Converters in the newest versions of objectdb? If not, can we expect this feature in the next releases?   Best regards and congratulations on this awesome database.  #1 2017-09-23 04:05 Hi.   Is Java 8 new DateTime API supported natively or through Converters in the newest vers ...

 
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How does objectdb deal with conflicting schemas?

Suppose we have an objectdb network server with multiple clients connecting to it. Some clients have the latest object schema, matching that of the server. But some have an older schema, not using fields that have since been added. Will this work? #1 2012-03-15 21:48 Suppose we have an objectdb network server with multiple clients connecting to it. Some clients have the latest o ...

 
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Property fields

Hello   How can I use a Property, such as: javafx.beans.property.BooleanProperty as a field within an entity class? I want to bind a JavaFX CheckBoxTableCell control to the property.   Thanks Russ #1 2014-10-26 17:22 Hello   How can I use a Property, such as: javafx. beans . property . BooleanPro ...

 
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How to connect to an embedded ObjectDB in a JPA/JEE application?

It is easy to change the properties in persistence.xml file to connect to an ObjectDB server. But I could not find any reference who to connet to an embedded objectdb in a JEE/JPA application through changing persistence.xml file. Can any one please help ? #1 2015-12-16 20:04 It is easy to change the properties in persistence.xml file to connect to an ObjectDB server. But I could not fin ...

 
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ObjectDB Explorer query error: Unexpected query token 'value'

Hi, my entity is named "XXXValue": this has several attributes, one of these is "value". In query tab, if I do "select value from XXXValue", I get the error <Unexpected query token 'value'>. I try  "select XXXValue.value from XXXValue" and the error is the same. Queries on others attributes work fine.  Thanks! #1 2017-04-04 10:00 Hi, my entity is named "XXXValue": this has several attributes, one of these is "value". In query tab, if ...

 
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Benchmark native JPA of Versant database (without datanucleous)

Now Versant DB (db4o commercial) has JPA implementation    Can you benchmark this Object Oriented DB to compare with Object DB? #1 2012-05-24 09:19 Now Versant DB (db4o commercial) has JPA implementation    Can you benchmark this Object Orient ...

 
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Cast exception?

Somehow I am unable to persist an entity class I wrote with manual @Id. I have a small Player class and I wish to store it with user ID as the primary key. So I declared the (only) primary key field as: @Id public int uid; This is how I'm persisting the instance: ... (for example, it is available as part of Java EE), in addition to being part of objectdb.jar. If JPA is loaded by class ...

 
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Navigation and Parameters

Greetings ObjectDB team, Suppose I pass a List of persistent objects to some query as a parameter, can I navigate to those objects' fields ? E.g.: SELECT x FROM ClassX x WHERE x.a IS MEMBER OF :y.b #1 2010-10-20 11:54 Greetings ObjectDB team, Suppose I pass a List of persistent objects to some query as a paramet ...