Split front and back end.

1 files changed, 55 insertions, 0 deletions

diff --git a/BackEnd/Timeline/Services/Exceptions/EntityNotExistError.cs b/BackEnd/Timeline/Services/Exceptions/EntityNotExistError.cs
new file mode 100644
index 00000000..e79496d3
--- /dev/null
+++ b/BackEnd/Timeline/Services/Exceptions/EntityNotExistError.cs
@@ -0,0 +1,55 @@
+using System;

+using System.Globalization;

+using System.Text;

+

+namespace Timeline.Services.Exceptions

+{

+    /// <summary>

+    /// Thrown when you want to get an entity that does not exist.

+    /// </summary>

+    /// <example>

+    /// For example, you want to get a timeline with given name but it does not exist.

+    /// </example>

+    [Serializable]

+    public class EntityNotExistException : Exception

+    {

+        public EntityNotExistException() : this(null, null, null, null) { }

+        public EntityNotExistException(string? entityName) : this(entityName, null, null, null) { }

+        public EntityNotExistException(Type? entityType) : this(null, entityType, null, null) { }

+        public EntityNotExistException(string? entityName, Exception? inner) : this(entityName, null, null, inner) { }

+        public EntityNotExistException(Type? entityType, Exception? inner) : this(null, entityType, null, inner) { }

+        public EntityNotExistException(string? entityName, Type? entityType, string? message = null, Exception? inner = null) : base(MakeMessage(entityName, entityType, message), inner)

+        {

+            EntityName = entityName;

+            EntityType = entityType;

+        }

+

+        private static string MakeMessage(string? entityName, Type? entityType, string? message)

+        {

+            string? name = entityName ?? (entityType?.Name);

+

+            var result = new StringBuilder();

+

+            if (name == null)

+                result.Append(Resources.Services.Exceptions.EntityNotExistErrorDefault);

+            else

+                result.AppendFormat(CultureInfo.InvariantCulture, Resources.Services.Exceptions.EntityNotExistError, name);

+

+            if (message != null)

+            {

+                result.Append(' ');

+                result.Append(message);

+            }

+

+            return result.ToString();

+        }

+

+        protected EntityNotExistException(

+          System.Runtime.Serialization.SerializationInfo info,

+          System.Runtime.Serialization.StreamingContext context) : base(info, context) { }

+

+        public string? EntityName { get; }

+

+        public Type? EntityType { get; }

+    }

+}