ToTypedElementOnSourceNode: caching children and value

src/Benchmarks/Benchmarks.csproj

@@ -1,9 +1,9 @@
-<Project Sdk="Microsoft.NET.Sdk">
+<Project Sdk="Microsoft.NET.Sdk">
 
   <PropertyGroup>
     <OutputType>Exe</OutputType>
     <TargetFramework>net5.0</TargetFramework>
-    <AssemblyName>Firely.Sdk.Benchmarks</AssemblyName>
+	<AssemblyName>Firely.Sdk.Benchmarks</AssemblyName>
     <RootNamespace>Firely.Sdk.Benchmarks</RootNamespace>
   </PropertyGroup>
 
@@ -12,7 +12,9 @@
   </ItemGroup>
 
   <ItemGroup>
+    <ProjectReference Include="..\..\common\src\Hl7.Fhir.ElementModel\Hl7.Fhir.ElementModel.csproj" />
     <ProjectReference Include="..\Hl7.Fhir.Core\Hl7.Fhir.Core.csproj" />
+    <ProjectReference Include="..\Hl7.Fhir.Specification\Hl7.Fhir.Specification.csproj" />
   </ItemGroup>
 
 </Project>

src/Benchmarks/Program.cs

@@ -4,9 +4,6 @@ namespace Firely.Sdk.Benchmarks
 {
     public class Program
     {
-        public static void Main(string[] args)
-        {
-            _ = BenchmarkRunner.Run<ModelInspectorBenchmarks>();
-        }
+        static void Main(string[] args) => BenchmarkSwitcher.FromAssembly(typeof(Program).Assembly).Run(args);
     }
 }

src/Benchmarks/ToTypedElementBenchmarks.cs

@@ -0,0 +1,35 @@
+using BenchmarkDotNet.Attributes;
+using Hl7.Fhir.ElementModel;
+using Hl7.Fhir.Serialization;
+using Hl7.Fhir.Specification;
+using Hl7.Fhir.Specification.Source;
+
+namespace Firely.Sdk.Benchmarks
+{
+    [MemoryDiagnoser]
+    public class ToTypedElementBenchmarks
+    {
+        private readonly IStructureDefinitionSummaryProvider _provider;
+        private readonly string _json = "{ \"resourceType\": \"Patient\", \"active\": true, \"contact\": [{\"organization\": {\"reference\": \"Organization/1\", \"display\": \"Walt Disney Corporation\" }, \"period\": { \"start\": \"0001-01-01\", \"end\": \"2018\" } } ],}";
+
+        public ToTypedElementBenchmarks()
+        {
+            _provider = new StructureDefinitionSummaryProvider(ZipSource.CreateValidationSource());
+        }
+
+
+        [Benchmark]
+        public void ToTypedElementOnSourceNode()
+        {
+            for (int i = 0; i < 10; i++)
+            {
+                var patient = FhirJsonNode.Parse(_json).ToTypedElement(_provider);
+
+                patient.VisitAll();
+
+                // second time should be faster, when the children and values are cached
+                patient.VisitAll();
+            }
+        }
+    }
+}