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How to access table, column and schema information at runtime?

April 26, 2017column runtime schema Table

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How to access table, column and schema information at runtime?

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EclipseLink stores the mapping metadata from the JPA annotations and orm.xml in its ClassDescriptor and DatabaseMapping objects. These objects can be accessed at runtime from the EntityManager or EntityManagerFactory by casting or unwrapping to the EclipseLink JPA interface.