Package org.datanucleus.store.rdbms.mapping

Package containing mappings for datastore (JDBC) types.

See: Description

Package org.datanucleus.store.rdbms.mapping Description

Package containing mappings for datastore (JDBC) types. These mappings will be mapped via the RDBMSMappingManager to the various java type mappings in org.datanucleus.store.mapped.mapping.

These are datastore (JDBC) types, and probably most of them are atomic types mapping to atomic java types

Mappings map persistent java fields in PersistenceCapable classes to columns in RDBMS tables. Mappings are also used to map "non-fields" in PersistenceCapable classes to columns in RDBMS tables. A class using datastore identity does not have java fields representing primary-keys in RDBMS tables, but as said ealier a Mapping is also applied to "non-fields". Therefore, a Mapping is applied to:

In addition to the representation of columns in tables for PersistenceCapable classes, Mappings are also used for representing fields in queries.

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