From 657fb589137099794e58fbd35beb7d942b376965 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Sun, 25 Apr 2021 21:20:04 +0800
Subject: ...

---
 .../Services/EntityAlreadyExistException.cs        | 32 ++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 BackEnd/Timeline/Services/EntityAlreadyExistException.cs

(limited to 'BackEnd/Timeline/Services/EntityAlreadyExistException.cs')

diff --git a/BackEnd/Timeline/Services/EntityAlreadyExistException.cs b/BackEnd/Timeline/Services/EntityAlreadyExistException.cs
new file mode 100644
index 00000000..2d3de368
--- /dev/null
+++ b/BackEnd/Timeline/Services/EntityAlreadyExistException.cs
@@ -0,0 +1,32 @@
+using System;
+
+namespace Timeline.Services
+{
+    /// <summary>
+    /// Thrown when an entity is already exists.
+    /// </summary>
+    /// <remarks>
+    /// For example, want to create a timeline but a timeline with the same name already exists.
+    /// </remarks>
+    [Serializable]
+    public class EntityAlreadyExistException : Exception
+    {
+        public EntityAlreadyExistException() : this(null, null, null, null) { }
+        public EntityAlreadyExistException(string? entityName) : this(entityName, null, null, null) { }
+        public EntityAlreadyExistException(string? entityName, Exception? inner) : this(entityName, null, null, inner) { }
+        public EntityAlreadyExistException(string? entityName, object? entity, Exception inner) : this(entityName, entity, null, inner) { }
+        public EntityAlreadyExistException(string? entityName, object? entity, string? message, Exception? inner) : base(message ?? Resource.ExceptionEntityAlreadyExist, inner)
+        {
+            EntityName = entityName;
+            Entity = entity;
+        }
+
+        protected EntityAlreadyExistException(
+          System.Runtime.Serialization.SerializationInfo info,
+          System.Runtime.Serialization.StreamingContext context) : base(info, context) { }
+
+        public string? EntityName { get; }
+
+        public object? Entity { get; }
+    }
+}
-- 
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