Resolve "Möglichkeit Datenvariablen zu übergeben anstelle von Dateipfaden"

Implements #49 (closed)

+PlotID/@dataPath/dataPath.m

+classdef dataPath < handle
+    %DATAPATH stores the datapaths to the research data
+    %   usage of a class is neccessary to support variables, argument
+    %   validation and storing variables as tempory files
+    
+    properties (SetAccess = protected)
+        DataPaths (1,:) cell % dataPaths
+        tmpPath  % path to TMP files 
+        ID %ID
+    end
+    
+    methods
+        function obj = dataPath(inputPaths,ID)
+            %DATAPATH Construct an instance of this class
+            %   start with argument validation
+            obj.ID = ID;
+            %catch non cell inputs in inputPaths 
+            if ~iscell(inputPaths)
+                  inputPaths = {inputPaths}; %Cell array
+            end
+            
+            isStruct = false([1,numel(inputPaths)]);
+            % strings will cause problems, therefore chars are used 
+            for i=1:numel(inputPaths)
+                if isstring(inputPaths{i})
+                   inputPaths{i} = char(inputPaths{i});
+                end
+                % check for Variable inputs           
+                if isstruct(inputPaths{i})
+                    isStruct(i) = true;
+                elseif ~ischar(inputPaths{i})
+                    obj.throwError(); 
+                end
+            end
+                        
+            obj.DataPaths = inputPaths;
+            % create temporary file from all Variables
+            if any(isStruct)
+               obj.vars2file(isStruct); 
+            end
+
+            % final check if all paths are valid
+            mustBeDataPath(obj);
+        end
+
+         function mustBeDataPath(obj)
+            if ~isempty(obj.DataPaths)
+                %checks if input is a valid DataPath object
+                  tf = ~isfile(obj.DataPaths);
+                  if any(tf)
+                     dataPath.throwError();
+                  end
+            end
+        end 
+              
+        
+        function cleanTmpFile(obj)
+            if ~isempty(obj.tmpPath)
+                delete(obj.tmpPath); 
+            end
+        end
+
+        %% non local functions
+        vars2file(obj,isvar);
+    end
+    methods (Static)
+        function throwError()
+        %THROWERROR throws an error Dialog for invalid Data
+          eidType = 'mustBeDataPath:notaValidFilePath';
+          msgType = 'DataPaths must contain file-path(s) or Variables';
+          throwAsCaller(MException(eidType,msgType))
+        end 
+    end %static
+end %class
+