mapping Description for member fields that are Collections
Note: Be careful when use references of this class or caching instances of this class,
because instances could become invalid (see
MetadataManager ).
OJB implements the mapping conventions for JDBC as specified by the JDBC 3.0 specification and
this class representing the jdbc java types of the sql types mappings - e.g.
Represents a jdbc sql type object defined by the JDBC 3.0 specification to handle
data conversion (see JDBC 3.0 specification Appendix B, Data Type Conversion Tables).
The handler catches Parsing events raised by the xml-parser
and builds up the DescriptorRepository that is used within the
OJB PersistenceBroker System.