A LRA-specific flavor of the ISO 21090 BL data type which can only have a null flavor.
Specializes
BL
Attributes
| Name | Data type | Occurs | Description |
|---|---|---|---|
| value | Boolean | 0..1 | This is implemented as described in ISO 21090. |
Constraints
| Type | Name | Specification |
|---|---|---|
| is null | LRA Invariant | inv: not isNull.oclIsUndefined and value.oclIsUndefined |