Produce a map describing how this operator modifies its projection. @return ProjectionMap null indicates it does not know how the projection changes, for example a join of two inputs where one input does not have a schema.
()
| 130 | * a schema. |
| 131 | */ |
| 132 | public ProjectionMap getProjectionMap() { |
| 133 | //TODO |
| 134 | //this method should be made abstract in the future |
| 135 | return null; |
| 136 | }; |
| 137 | |
| 138 | /** |
| 139 | * Unset the projection map as if it had not been calculated. This is used by |
no outgoing calls
no test coverage detected