fix(schedules): corrected serialization of pathRegex

src/MfGames.Nitride.Temporal.Schedules/NumericalPathSchedule.cs

@@ -21,7 +21,7 @@ public partial class NumericalPathSchedule : ISchedule
 {
     public NumericalPathSchedule()
     {
-        this.PathRegex = new Regex(@"^.*(\d+)");
+        this.PathRegex = @"^.*(\d+)";
         this.GetPath = entity => entity.Get<UPath>().ToString();
         this.CaptureGroup = 1;
         this.CaptureOffset = -1;
@@ -47,7 +47,7 @@ public partial class NumericalPathSchedule : ISchedule
     /// <summary>
     /// Gets or sets the regular expression to identify a matching path.
     /// </summary>
-    public Regex? PathRegex { get; set; }
+    public string? PathRegex { get; set; }
 
     /// <summary>
     /// Gets or sets the period between each matching entity. The period is
@@ -83,7 +83,8 @@ public partial class NumericalPathSchedule : ISchedule
     {
         // Get the path and match it.
         string? path = this.GetPath(entity);
-        Match? match = this.PathRegex?.Match(path)
+        Regex? regex = this.GetRegex();
+        Match? match = regex?.Match(path)
             ?? throw new NullReferenceException(
                 "PathRegex was not configured for the "
                 + this.GetType().Name
@@ -116,12 +117,20 @@ public partial class NumericalPathSchedule : ISchedule
     /// <inheritdoc />
     public virtual bool CanApply(Entity entity)
     {
-        string? path = this.GetPath(entity);
-        bool match = this.PathRegex?.IsMatch(path) ?? false;
+        string path = this.GetPath(entity);
+        Regex? regex = this.GetRegex();
+        bool match = regex?.IsMatch(path) ?? false;
 
         return match;
     }
 
+    public Regex? GetRegex()
+    {
+        return this.PathRegex == null
+            ? null
+            : new Regex(this.PathRegex);
+    }
+
     protected virtual Entity Apply(
         Entity entity,
         int number,

tests/MfGames.Nitride.Temporal.Schedules.Tests/NumericalPathScheduleTests.cs

@@ -47,7 +47,8 @@ public class NumericalPathScheduleTests : TemporalSchedulesTestBase
                     "---",
                     "access: custom",
                     "schedules:",
-                    "  - scheduleStart: 2023-01-01",
+                    "  - pathRegex: chapter-(\\d+)",
+                    "    scheduleStart: 2023-01-01",
                     "    access: public",
                     ""));
         List<TestSchedule>? schedules = model.Schedules!;