Class DataModelRolesAttribute

source code

                   object --+            
                            |            
    base.attrdef.AttributeDef --+        
                                |        
base.complexattrs.StructAttribute --+    
                                    |    
base.complexattrs.StructListAttribute --+
                                        |
                                       DataModelRolesAttribute

an attribute allowing data model annotation using SIL.

It will also give an annotations attribute on the instance, and a getAnnotationsOfType method letting you pull out a specific annotation.

For situation where an existing annotation should be copied from annotations coming in through columns and/or params, the attribute also gives an updateAnnotationFromChildren method. It will do nothing if some annotation already exists.