Changes to move away from Newtonsoft. Apparently, there is a JsonNode object that can replace the ExpandoObject approach used with Json.net.

Author: RoelantVos

ClassLibrary/DataWarehouseAutomation/DataWarehouseAutomation/HandleBarsHelpers.cs

@@ -216,17 +216,19 @@ public static void RegisterHandleBarsHelpers()
             {
                 try
                 {
-                    string expression = args[0] as string;
+                    var expression = args[0];
 
-                    if (args[0] is System.Text.Json.JsonElement value)
+                    var bla = "";
+
+                    if (!String.IsNullOrEmpty(expression.ToString()) && args[0] is System.Text.Json.JsonElement value)
                     {
                         expression = value.GetString();
                     }
 
                     string pattern = args[1] as string;
                     string replacement = args[2] as string;
 
-                    expression = expression.Replace(pattern, replacement);
+                    expression = expression.ToString().Replace(pattern, replacement);
                     writer.WriteSafeString(expression);
                 }
                 catch (Exception exception)

ClassLibrary/DataWarehouseAutomation/Example_Project/Examples.csproj

@@ -11,7 +11,6 @@
   </ItemGroup>
   <ItemGroup>
     <PackageReference Include="Handlebars.Net" Version="2.1.4" />
-    <PackageReference Include="Newtonsoft.Json" Version="13.0.3" />
     <PackageReference Include="System.Data.DataSetExtensions" Version="4.5.0" />
   </ItemGroup>
 </Project>

ClassLibrary/DataWarehouseAutomation/Example_Project/Program.cs

@@ -1,10 +1,8 @@
 using System;
-using System.Dynamic;
 using System.IO;
 using DataWarehouseAutomation;
 using HandlebarsDotNet;
-using Newtonsoft.Json;
-using Newtonsoft.Json.Converters;
+using System.Text.Json.Nodes;
 
 namespace Example_Handlebars
 {
@@ -40,7 +38,10 @@ private static void DisplayPatternResult(string patternFile, string jsonMetadata
                 // Fetch the content of the Json files
                 string jsonInput = File.ReadAllText(jsonMetadataFile);
 
-                var deserialisedMapping = JsonConvert.DeserializeObject<ExpandoObject>(jsonInput, new ExpandoObjectConverter());
+                //ar deserialisedMapping = JsonConvert.DeserializeObject<ExpandoObject>(jsonInput, new ExpandoObjectConverter()); -- This is the old Newtonsoft expando object approach
+                //var deserialisedMapping = System.Text.Json.JsonSerializer.Deserialize<ExpandoObject>(jsonInput);
+
+                JsonNode deserialisedMapping = System.Text.Json.JsonSerializer.Deserialize<JsonNode>(jsonInput);
 
                 var result = template(deserialisedMapping);
                 Console.WriteLine(result);

ClassLibrary/DataWarehouseAutomation/RunDwhAutomation/Program.cs

@@ -14,6 +14,7 @@ static int Main(string[] args)
             // An optimistic start.
             Environment.ExitCode = (int)ExitCode.Success;
 
+            // Get the handlebars extensions from the DataWarehouseAutomation class library.
             HandleBarsHelpers.RegisterHandleBarsHelpers();
 
             #region unit testing
@@ -116,7 +117,7 @@ static int Main(string[] args)
                     {
                         if (options.outputFileName == null)
                         {
-                            // The outputfilename will be derived from the Json input (mappingName), if available.
+                            // The output filename will be derived from the Json input (mappingName), if available.
                             RunAutomation(options, file);
                         }
                         else

ClassLibrary/DataWarehouseAutomation/Sample_Metadata/sampleFreeForm.json

@@ -1,7 +1,7 @@
 {
   "sourceApp": {
-    "value": "abs-event-service",
-    "description": "name of source system."
+    "value": "event-service",
+    "description": "name of system"
   },
   "topicName": {
     "value": "application-declined"

ClassLibrary/DataWarehouseAutomation/Sample_Templates/TemplateSampleFreeForm.Handlebars

@@ -3,6 +3,6 @@
     "bucketrootpath": "kafka/topics",
     "container": "{{sourceApp.value}}",
     "containerrootpath": "data",
-    "module_code": "m_050_kafka_{{StringReplace topicName.value '-' '_'}}"
+    "module_code": "kafka_{{StringReplace topicName.value '-' '_'}}"
   }