Merge pull request #1156 from progressonderwijs/fons/pp_try_get

Added PocoProperties<T>.TryGetByName method to allow fluent lookup of external provided names.

Author: fdij

src/ProgressOnderwijsUtils/Pocos/PocoProperties.cs

@@ -35,6 +35,12 @@ public Type PocoType
         IndexByName = dictionary;
     }
 
+    public bool TryGetByName(string name, [NotNullWhen(true)] out IPocoProperty<T>? property)
+    {
+        property = IndexByName.TryGetValue(name, out var index) ? Properties[index] : null;
+        return property != null;
+    }
+
     public IPocoProperty<T> GetByName(string name)
         => Properties[IndexByName[name]];
 

src/ProgressOnderwijsUtils/ProgressOnderwijsUtils.csproj

@@ -1,8 +1,8 @@
 <Project Sdk="Microsoft.NET.Sdk">
   <Import Project="..\NugetPackagesCommon.props" />
   <PropertyGroup Label="Configuration">
-    <Version>105.6.0</Version>
-    <PackageReleaseNotes>HTML DSL: better support for https://html.spec.whatwg.org/#boolean-attribute </PackageReleaseNotes>
+    <Version>105.7.0</Version>
+    <PackageReleaseNotes>Added PocoProperties<T>.TryGetByName method to allow fluent lookup of external provided names.</T></PackageReleaseNotes>
     <Title>ProgressOnderwijsUtils</Title>
     <Description>Collection of utilities developed by ProgressOnderwijs</Description>
     <PackageTags>ProgressOnderwijs</PackageTags>

test/ProgressOnderwijsUtils.Tests/PocoUtilsTest.cs

@@ -108,6 +108,21 @@ public void CanSetAndGet()
         PAssert.That(() => o.Equals(new() { Property = "aha", LabelledProperty = "really", }));
     }
 
+    [Fact]
+    public void CanTryGet()
+    {
+        var o = new SimpleObject { LabelledProperty = "bar", };
+        var moDef = PocoUtils.GetProperties<SimpleObject>();
+
+        var existing = moDef.TryGetByName(nameof(SimpleObject.LabelledProperty), out var prop);
+        PAssert.That(() => existing);
+        PAssert.That(() => (string?)prop.AssertNotNull().Getter.AssertNotNull()(o) == "bar");
+
+        existing = moDef.TryGetByName("NonExisting", out var noprop);
+        PAssert.That(() => !existing);
+        PAssert.That(() => noprop == null);
+    }
+
     [Fact]
     public void CanGetByExpression()
     {