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api-jpa

getParameters()

Get the parameter objects corresponding to the declared parameters of the query.(Method of javax.persistence.Query)

 
api-jpa

getCorrelatedJoins()

Return the correlated joins of the subquery.(Method of javax.persistence.criteria.Subquery)

 
api-jpa

getParameters()

Return the parameters of the query.(Method of javax.persistence.criteria.CriteriaQuery)

 
manual

Storing JPA Entity Objects

Explains how to use JPA to store (persist) entity objects in the database. New entity objects can be stored in the database either explicitly by invoking the persist persist(entity) EntityManager's method Make an instance managed and persistent. See JavaDoc Reference Page... method or ...

 
forum_thread

Failed to commit transaction: Java heap space (error 613)

Hi, the following exception occurred in our production machine last night: 2013-07-17 20:41:46,665 pdnsrttor3rc42-WSAgent-2-Existing/16 ERROR ObjectDbMessagePipe - Failed to put a message on queue:  pdnsrttor3rc42-ReportDSGroup_Instance-2 retrying = true [ObjectDB 2.4.6_10] javax.persistence.RollbackException Failed to commit transaction: Java heap space (error 613) We are using ObjectDB 2.4.6_10, JDK 7, and a 30GB heap space. ... Query cache size Client side cache settings You may try each of these parameters to assess how ...

 
api-jpa

javax.persistence.criteria.CriteriaQuery

The CriteriaQuery interface defines functionality that is specific to top-level queries.(Interface of JPA)

 
manual

GROUP BY and HAVING clauses

Explains how to use the GROUP BY and HAVING clauses in a JPA/JPQL query. The GROUP BY clause enables grouping of query results. A JPQL query with a GROUP BY clause returns properties of generated groups instead of individual objects and fields. The position of a GROUP BY clause in the query execution order is afte ...

 
api-jpa

getEmbeddables()

Return the metamodel embeddable types.(Method of javax.persistence.metamodel.Metamodel)

 
api-jpa

getSingularAttributes()

Return the single-valued attributes of the managed type.(Method of javax.persistence.metamodel.ManagedType)

 
forum_thread

Entity with java.util.Date column gives ClassCastException in BIRT

Copied a straightforward entity class from my coleague. Using Eclipse Kepler (Reporting) and stored it in ObjectDB 2.5.3_02. After creating an ObjectDB BIRT DataSource and a DataSet, entered a simple JPQL query to select the fields. Entity looks like this: #1 2013-10-08 07:45 Copied a straightforward entity class from my coleague. Using Eclipse Kepler (Reporting) and stored it in ObjectD ...