Package org.datanucleus.store.rdbms.mapping.column

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

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

Mappings map persistent java fields in persistable classes to columns in RDBMS tables. Mappings are also used to map "non-fields" in persistable 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 earlier a Mapping is also applied to "non-fields". Therefore, a Mapping is applied to:

• persistent java fields
• datastore identity (primary-key columns)
• optimistic columns (columns with version numbers)
• index columns (columns indexing an ordered list)
• owner columns in unidirectional inverse relationships
• adapter columns (additional column added as primary key when the existing columns have datatype not allowed, by database limitation, to be part of the primary key)

In addition to the representation of columns in tables for persistable classes, column mappings are also used for representing columns in queries.

Interface Summary

Interface	Description
ColumnMapping	Representation of the mapping of a column.
ColumnMappingPostSet	Interface implemented by any ColumnMapping that requires a post-set (insert/update) step.

Class Summary

Class	Description
AbstractColumnMapping	Implementation of the mapping of a column.
AbstractLargeBinaryColumnMapping	Mapping of a large binary (e.g BLOB, LONGVARBINARY) column.
ArrayColumnMapping	Mapping of an ARRAY column.
BigIntColumnMapping	Mapping of a Big Integer column.
BinaryColumnMapping	Mapping of a BINARY column.
BinaryStreamColumnMapping	Mapping of a BinaryStream column.
BitColumnMapping	Mapping of a BIT column.
BlobColumnMapping	Mapping of a BLOB column.
BlobImpl	The representation (mapping) in the Java programming language of an SQL BLOB value.
BooleanColumnMapping	Mapping of a BOOLEAN column.
CharColumnMapping	Mapping of a CHAR column.
ClobColumnMapping	Mapping of a Clob column.
ClobImpl	The mapping in the Java programming language for the SQL CLOB type.
ColumnMappingFactory	Factory class for creating ColumnMapping instances.
DateColumnMapping	Mapping of a DATE column.
DB2DatalinkColumnMapping	Mapping of a DB2 "Datalink" column.
DecimalColumnMapping	Mapping of a Decimal column.
DoubleColumnMapping	Mapping of a DOUBLE column.
FloatColumnMapping	Mapping of a Float column.
IntegerColumnMapping	Mapping of a INTEGER column.
LongVarBinaryColumnMapping	Mapping of a LONGVARBINARY column.
LongVarcharColumnMapping	Mapping of a Long VARCHAR column.
NCharColumnMapping	Mapping of a NCHAR column.
NumericColumnMapping	Mapping of a numeric column.
NVarcharColumnMapping	Mapping of a NVARCHAR column.
OracleBlobColumnMapping	Mapping for an Oracle BLOB column.
OracleClobColumnMapping	Mapping for an Oracle CLOB column.
OracleXMLTypeColumnMapping	Mapping for an Oracle XMLType column.
OtherColumnMapping	Mapping of an "OTHER" column.
RealColumnMapping	Mapping of a REAL column.
SmallIntColumnMapping	Mapping of a SMALLINT column.
SqlXmlColumnMapping	Mapping of an SQLXML column.
StreamableSpooler	Spooler for files being streamed from the datastore.
TimeColumnMapping	Mapping of a TIME column.
TimestampColumnMapping	Mapping of a TIMESTAMP column.
TimesTenVarBinaryColumnMapping	Mapping of a VARBINARY column for TimesTen database.
TinyIntColumnMapping	Mapping of a TINYINT column.
VarBinaryColumnMapping	Mapping of a VARBINARY column.
VarCharColumnMapping	Mapping of a VARCHAR column.