Package gavo :: Package rscdef :: Module rowtriggers :: Class KeyNull

Class KeyNull

                   object --+                    
                            |                    
 base.structure.StructureBase --+                
                                |                
                   object --+   |                
                            |   |                
           base.common.Parser --+                
                                |                
base.structure.ParseableStructure --+            
                                    |            
             base.structure.Structure --+        
                                        |        
                              TriggerBase --+    
                                            |    
                               KeyedCondition --+
                                                |
                                               KeyNull

A trigger firing if a certain key is missing or NULL/None

Nested Classes
Inherited from `base.structure.StructureBase`: `__metaclass__`

Instance Methods

__call__(self, dict)

source code

Inherited from base.structure.Structure: __provides__, callCompletedCallbacks, completeElement, finishElement, onElementComplete, validate

Inherited from base.structure.ParseableStructure: __init__, end_, feed, feedFrom, feedObject, getAttribute, iterEvents, start_, value_

Inherited from base.structure.StructureBase: __providedBy__, adopt, breakCircles, change, copy, getAttributes, getCopyableAttributes, getSourcePosition, iterChildren, setPosition

Inherited from base.common.Parser: feedEvent

Inherited from object: __delattr__, __format__, __getattribute__, __hash__, __new__, __reduce__, __reduce_ex__, __repr__, __setattr__, __sizeof__, __str__, __subclasshook__

Class Methods
Inherited from `base.structure.StructureBase`: `fromStructure`

Class Variables

name_ = 'keyNull'
a sentinel for all kinds of undefined values.

Inherited from KeyedCondition: attrSeq, managedAttrs

Inherited from base.structure.Structure: __implemented__

Inherited from base.structure.StructureBase: completedCallbacks

Properties
Inherited from `object`: `__class__`