init backend

dotnet/AipsCore/Domain/Abstract/Rule/AbstractRule.cs

@@ -0,0 +1,18 @@
+using AipsCore.Domain.Common.Validation;
+
+namespace AipsCore.Domain.Abstract.Rule;
+
+public abstract class AbstractRule : IRule
+{
+    protected abstract string ErrorCode { get; }
+    protected abstract string ErrorMessage { get; }
+
+    public string ValueObjectName { protected get; set; } = "Unknown";
+    
+    public ValidationError GetError()
+    {
+        return new ValidationError(ErrorCode, ErrorMessage);
+    }
+
+    public abstract bool Validate();
+}

dotnet/AipsCore/Domain/Abstract/Rule/IRule.cs

@@ -0,0 +1,10 @@
+using AipsCore.Domain.Common.Validation;
+
+namespace AipsCore.Domain.Abstract.Rule;
+
+public interface IRule
+{
+    ValidationError GetError();
+    bool Validate();
+    string ValueObjectName { set; }
+}

dotnet/AipsCore/Domain/Abstract/ValueObject/AbstractValueObject.cs

@@ -0,0 +1,24 @@
+using AipsCore.Domain.Abstract.Rule;
+using AipsCore.Domain.Common.Validation;
+
+namespace AipsCore.Domain.Abstract.ValueObject;
+
+public abstract record AbstractValueObject
+{
+    protected abstract ICollection<IRule> GetValidationRules();
+
+    protected void Validate()
+    {
+        var rules = GetValidationRules();
+        var validator = new Validator(rules, ValueObjectName);
+        
+        validator.Validate();
+
+        if (!validator.Success)
+        {
+            throw validator.GetValidationException();
+        }
+    }
+
+    private string ValueObjectName => this.GetType().Name;
+}