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Error happened while running report.

at preview result time. Like: org.eclipse.birt.report.engine.api.EngineException: Error happened while running the report. at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask.doRun(DatasetPreviewTask.java:330) at org.eclipse.birt.report.engine.api.impl.DatasetPreviewTask

How to enhance the JPA/Spring/MVC to implement RESTfull for CURL client?

("/api") public class APIController{ @Autowired private GuestDao guestDao; @RequestMapping(value ... : @Controller @RequestMapping("/api") public class APIController{ Try http://localhost:8080/Guestbook/api ... : application/json" http://localhost:8080/Guestbook/api/user/siegfried -X GET HTTP/1.1 406 Not Acceptable

Great product - needs better marketing - more popularity

points. (JPA and JDO APIs versus an elegant proprietary API is a negative sales point to me.) I ... realistic. Supporting the JPA and JDO APIs is an important selling point for customers ... a software that uses ObjectDB is secured by the standard API, because if necessary, you can easily switch

JBoss 7 startup fails

:49:36,719 INFO [org.jboss.as.jpa] (MSC service thread 1-1) added javax.persistence.api dependency ... (Persistence.java:69) [hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final] at javax.persistence.Persistence.createEntityManagerFactory(Persistence.java:47) [hibernate-jpa-2.0-api-1.0.1.Final.jar:1.0.1.Final

Weird issue with variable naming

; import javax.persistence.criteria.CriteriaBuilder; import javax.persistence.criteria.CriteriaQuery; import javax.persistence.criteria.Join; import javax.persistence.criteria.JoinType; import javax.persistence.criteria.Root; public final class F329 { public static void main(String[] args

Issue with UPPER ?

] Scan type com.lexware.vereinsverwaltung.verein.api.model.mitglied.Mitglied locating all the Mitglied ... ] Scan type com.lexware.vereinsverwaltung.verein.api.model.mitglied.Mitglied locating all the Mitglied ... 8a3. [Step 8a2] Scan type com.quasado.foundation.contact.api.model.organisation

Different behavior for casting and not casting

.qubletFRAGMENTMAP.get('com.lexware.vereinsverwaltung.abrechnung.api.model.mitglied ... WHERE ((com.quasado.foundation.warehouse.api.model.inventory.contact.AbstractContactContractsFragment)$1.qubletFRAGMENTMAP.get('com.lexware.vereinsverwaltung.abrechnung.api.model.mitglied


Method javax.persistence.criteria.Subquery AbstractQuery<?> getParent() Return the query of which this is a subquery. Returns: the enclosing query or subquery Since: JPA 2.0


Method javax.persistence.criteria.AbstractQuery<T> AbstractQuery<T> groupBy( List<E> grouping ) Specify the expressions that are used to form groups over the query results. Replaces the previous specified grouping expressions, if any. If no grouping expressions are specified, any previously added


Method javax.persistence.Query int executeUpdate() Execute an update or delete statement. Returns: the number of entities updated or deleted Throws: IllegalStateException - if called for a Java Persistence query language SELECT statement or for a criteria query TransactionRequiredException

Getting Started

ObjectDB is very easy to use. Follow the Getting Started Tutorial and the Quick Tour manual chapter and in minutes you may be able to write and run first Java programs against ObjectDB.

Prior knowledge or experience in database programming (SQL, JDBC, ORM, JPA, etc.) is not required, but some background in using the Java language is essential.

Need Help?

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