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Database Doctor

Explains how to use the ObjectDB object database Doctor tool to diagnose and repair database files and damaged Java/JPA/JDO objects. The ObjectDB Doctor tool provides two related services: Diagnosis and validation of an ObjectDB database file Checks a given ObjectDB database file, verifies that it is healthy and valid, and if the file is not valid (it is c ...

 
forum_thread

Tomcat + JPA Problem

Hi i tried to setup the example from your webpage (jpa - Tomcat with Ecplipse) and i always get this Error: [ObjectDB 2.1.0] class "javax.persistence.Entity"'s signer information does not match signer information of other classes in the same package   ... webpage (jpa - Tomcat with Ecplipse) and i always get this Error: [ObjectDB 2.1.0] class "javax.persistence.Entity"'s signer ...

 
forum_thread

Query on Embedded Primary Key?

Hi, I am trying to use Embedded Primary Key - but seems I can't retrieve them correctly with the query below - the query seem to work fine for other field (in the code = primkeycopy). The error I get when is below - it complains about a casting issue. Let me know how to fix it - Thanks  EKK   ... work fine for other field (in the code = primkeycopy). The error I get when is below - it complains about a casting issue. Let me ...

 
forum_thread

Extending model by "common entity"

Hi, I have a question about extending working model with one, common entity, that all other entities will inherit from. For example I have 2 different entities in database with some data: #1 2011-02-06 13:38 Hi, I have a question about extending working model with one, common entity, that all other entities will ...

 
forum_thread

String comparison in query where clause

I am having trouble getting a simple string comparison to work in an SQL "where" clause.  It is my understanding that queries are case sensitive by default and I do not want that, so I am constructing the query as follows... SELECT e FROM Exercise AS e WHERE UPPER(e.name) = ?0 and then I am converting the parameter (representing by position ?0) to upper case.  I am certain the parameter value is correct, and there should be a matching record in the database, but my query returns no result. ... this issue further it was found that it was a programmer error, and it is not an ObjectDB-related issue or question.  I would like ...

 
api-jpa

isActive()

Indicate whether a resource transaction is in progress.(Method of javax.persistence.EntityTransaction)

 
forum_thread

Possible issue for JPQL IS EMPTY expression

Possible issue for JPQL IS EMPTY comparison expression: SELECT e FROM MyEntity e WHERE e.collection-valued IS EMPTY throws javax.persistence.PersistenceException: Invalid operand type  for operator IS EMPTY (error 756) Thanks. ... Invalid operand type  for operator IS EMPTY (error 756) Thanks. Note: It doesn' t work with SIZE(): ...

 
api-jdo

registerDateFormat(df)

Register a DateFormat instance for use with constructing Date instances.(Method of javax.jdo.spi.JDOImplHelper)

 
forum_thread

object creation during pmf.getPersistenceManager()

Hi ... but via clonning? it could help moreover you have error in exception handling, bad cast is done: ...

 
forum_thread

Guessbook tutorial: Java EE 6 JPA Tutorial - Maven Project

I have a Max OSX Lion and am running Netbeans 7.2 with Glassfish 3.1.2. I download the tutorial and run it. The moment I type something in the sign in block and click add, I get the following error trace: (Does anyone know a fix?)   ... in the sign in block and click add, I get the following error trace: (Does anyone know a fix?)   WARNING: EJB5184:A ...