Fixed MV problems

Author: Thomas Mahlberg

KustoSchemaTools/Helpers/Serialization.cs

@@ -26,7 +26,7 @@ public static class Serialization
 
         public static JsonSerializer CloneJsonSerializer { get; } = new JsonSerializer
         {
-            DefaultValueHandling = DefaultValueHandling.Ignore   
+            DefaultValueHandling = DefaultValueHandling.Ignore
         };
 
 

KustoSchemaTools/Model/MaterializedView.cs

@@ -1,4 +1,5 @@
 using KustoSchemaTools.Changes;
+using System.ComponentModel;
 using YamlDotNet.Core;
 using YamlDotNet.Serialization;
 
@@ -8,10 +9,10 @@ public class MaterializedView : IKustoBaseEntity
     {
         public string Source { get; set; }
         public string Kind { get; set; } = "table";
-        public string Folder { get; set; } = "";
-        public string DocString { get; set; } = "";
+        public string Folder { get; set; }
+        public string DocString { get; set; }
         public string? EffectiveDateTime { get; set; }
-        public string Lookback { get; set; } = "";
+        public string Lookback { get; set; }
         public bool? UpdateExtentsCreationTime { get; set; }
         public bool AutoUpdateSchema { get; set; } = false;
         public List<string> DimensionTables { get; set; }
@@ -27,7 +28,9 @@ public List<DatabaseScriptContainer> CreateScripts(string name)
             var scripts = new List<DatabaseScriptContainer>();
             var properties = string.Join(", ", GetType().GetProperties()
                 .Where(p => p.GetValue(this) != null && excludedProperies.Contains(p.Name) == false)
-                .Select(p => $"{p.Name}=\"{p.GetValue(this)}\""));
+                .Select(p => new {Name = p.Name, Value = p.GetValue(this) })
+                .Where(p => !string.IsNullOrWhiteSpace(p.Value?.ToString()))
+                .Select(p => $"{p.Name}=\"{p.Value}\""));
             scripts.Add(new DatabaseScriptContainer("CreateOrAlterMaterializedView", 40, $".create-or-alter materialized-view with ({properties}) {name} on {Kind} {Source} {{ {Query} }}"));
 
             if (RetentionAndCachePolicy != null)

KustoSchemaTools/Parser/KustoLoader/KustoMaterializedViewBulkLoader.cs

@@ -6,13 +6,15 @@ public class KustoMaterializedViewBulkLoader : KustoBulkEntityLoader<Materialize
     {
         const string LoadMaterializedViews = ".show materialized-views  details| project EntityName=MaterializedViewName, Body=bag_pack(\"DocString\", DocString, \"Folder\", Folder,\"RetentionAndCachePolicy\",bag_pack(\"Retention\",strcat(toint(totimespan(parse_json(RetentionPolicy).SoftDeletePeriod)/1d),\"d\") , \"HotCache\", strcat(toint(totimespan(parse_json(CachingPolicy).DataHotSpan)/1d),\"d\")))";
         const string LoadDetails = ".show materialized-views | extend Lookback = strcat(toint(Lookback / 1d),\"d\") | extend Lookback = iff(Lookback  == 'd', \"\", Lookback), Source= SourceTable | project EntityName=Name, Body=bag_pack_columns(Source, Query,IsEnabled, Folder,DocString, AutoUpdateSchema, Lookback)";
+        const string LoadRowLevelSecurity = ".show database schema as csl script | parse-where DatabaseSchemaScript with \".alter materialized-view \" TableName:string \" policy row_level_security enable \" Policy:string | project TableName, RowLevelSecurity = trim(\"( |\\\\\\\")*\",Policy) | project EntityName = TableName, Body=bag_pack_columns(RowLevelSecurity)";
 
         public KustoMaterializedViewBulkLoader() : base(d => d.MaterializedViews) { }
 
         protected override IEnumerable<string> EnumerateScripts()
         {
             yield return LoadMaterializedViews;
             yield return LoadDetails;
+            yield return LoadRowLevelSecurity;
         }
     }
 }