Class SourceFieldApp

source code

                   object --+                    
                            |                    
 base.structure.StructureBase --+                
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                   object --+   |                
                            |   |                
           base.common.Parser --+                
                                |                
base.structure.ParseableStructure --+            
                                    |            
             base.structure.Structure --+        
                                        |        
                           object --+   |        
                                    |   |        
      base.structure.RestrictionMixin --+        
                                        |        
                   rscdef.procdef.ProcDef --+    
                                            |    
                       rscdef.procdef.ProcApp --+
                                                |
                                               SourceFieldApp

A procedure application that returns a dictionary added to all incoming rows.

Use this to programmatically provide information that can be computed once but that is then added to all rows coming from a single source, usually a file. This could be useful to add information on the source of a record or the like.

The code must return a dictionary. The source that is about to be parsed is passed in as sourceToken. When parsing from files, this simply is the file name. The data the rows will be delivered to is available as "data", which is useful for adding or retrieving meta information.