6.6 TFM_PLAN Object Type

The object type TFM_PLAN is used is by several SDO_CS package subprograms to specify a transformation plan.

For example, to create a concatenated operation that consists of two operations specified by a parameter of type TFM_PLAN, use the SDO_CS.CREATE_CONCATENATED_OP procedure.

Oracle Spatial defines the object type TFM_PLAN as:

CREATE TYPE tfm_plan AS OBJECT (
 THE_PLAN SDO_TFM_CHAIN); 

The SDO_TFM_CHAIN type is defined as VARRAY(1048576) OF NUMBER.

Within the SDO_TFM_CHAIN array:

• The first element specifies the SRID of the source coordinate system.

• Each pair of elements after the first element specifies an operation ID and the SRID of a target coordinate system.