Add save/load utility class

resources/ReleaseNotes.md

@@ -7,6 +7,7 @@
 
 - Add method to `mag.Instrument` to fill warm-up with `missing` data
 - Add method to `mag.Science` to replace periods with a filler variable
+- Add save/load utility class
 - Separate calculation of spectrogram in separate function
 - Replace last element of file with `missing` to improve plot where data is missing
 - Science object with no data is considered empty in `mag.Instrument`

src/analyze/+mag/@IMAPTestingAnalysis/IMAPTestingAnalysis.m

@@ -1,9 +1,8 @@
-classdef (Sealed) IMAPTestingAnalysis < matlab.mixin.Copyable & mag.mixin.SetGet
+classdef (Sealed) IMAPTestingAnalysis < matlab.mixin.Copyable & mag.mixin.SetGet & mag.mixin.SaveLoad
 % IMAPTESTINGANALYSIS Automate analysis of an IMAP CPT or SFT folder.
 
-    properties (Constant, Hidden)
-        % VERSION Version number.
-        Version (1, 1) string = mag.version()
+    properties (Constant)
+        Version = mag.version()
     end
 
     properties
@@ -418,7 +417,7 @@ function load(this)
             elseif isa(object, "struct")
 
                 % Recreate object based on version.
-                if isfield(object, "Outboard")
+                if isequal(object.OriginalVersion, 1.0)
 
                     % Convert object to version 2.0 and recursively
                     % dispatch it.
@@ -441,9 +440,9 @@ function load(this)
                     end
 
                     loadedObject = mag.IMAPTestingAnalysis.loadobj(loadedObject);
-                elseif isfield(object, "PrimaryRamp")
+                elseif isequal(object.OriginalVersion, 2.0)
 
-                    % Convert object directly to version 3.0.
+                    % Convert object directly to version 2.5.
                     loadedObject = mag.IMAPTestingAnalysis();
                     loadedObject.Results = mag.Instrument();
 

src/utility/+mag/+mixin/SaveLoad.m

@@ -0,0 +1,22 @@
+classdef (Abstract, HandleCompatible) SaveLoad
+% SAVELOAD Utility class to aid saving and loading to MAT files.
+
+    properties (Abstract, Constant)
+        % VERSION Version number.
+        Version (1, 1) string
+    end
+
+    properties (GetAccess = protected, SetAccess = private)
+        % ORIGINALVERSION Original version for save/load compatibility.
+        OriginalVersion (1, 1) string
+    end
+
+    methods (Hidden)
+
+        function savedObject = saveobj(this)
+
+            savedObject = this;
+            savedObject.OriginalVersion = this.Version;
+        end
+    end
+end