From f9aa02ec1a4c24e80a206857d4f68198bb027bb4 Mon Sep 17 00:00:00 2001
From: crupest <crupest@outlook.com>
Date: Mon, 11 Nov 2024 01:12:29 +0800
Subject: HALF WORK: 2024.12.19

Re-organize file structure.
---
 .../CrupestApi.Commons/Crud/UpdateClause.cs        | 77 ++++++++++++++++++++++
 1 file changed, 77 insertions(+)
 create mode 100644 dropped/docker/crupest-api/CrupestApi/CrupestApi.Commons/Crud/UpdateClause.cs

(limited to 'dropped/docker/crupest-api/CrupestApi/CrupestApi.Commons/Crud/UpdateClause.cs')

diff --git a/dropped/docker/crupest-api/CrupestApi/CrupestApi.Commons/Crud/UpdateClause.cs b/dropped/docker/crupest-api/CrupestApi/CrupestApi.Commons/Crud/UpdateClause.cs
new file mode 100644
index 0000000..de5c6c3
--- /dev/null
+++ b/dropped/docker/crupest-api/CrupestApi/CrupestApi.Commons/Crud/UpdateClause.cs
@@ -0,0 +1,77 @@
+using System.Text;
+
+namespace CrupestApi.Commons.Crud;
+
+public class UpdateItem
+{
+    public UpdateItem(string columnName, object? value)
+    {
+        ColumnName = columnName;
+        Value = value;
+    }
+
+    public string ColumnName { get; set; }
+    public object? Value { get; set; }
+}
+
+public interface IUpdateClause : IClause
+{
+    List<UpdateItem> Items { get; }
+    (string sql, ParamList parameters) GenerateSql();
+}
+
+public class UpdateClause : IUpdateClause
+{
+    public List<UpdateItem> Items { get; } = new List<UpdateItem>();
+
+    public UpdateClause(IEnumerable<UpdateItem> items)
+    {
+        Items.AddRange(items);
+    }
+
+    public UpdateClause(params UpdateItem[] items)
+    {
+        Items.AddRange(items);
+    }
+
+    public UpdateClause Add(params UpdateItem[] items)
+    {
+        Items.AddRange(items);
+        return this;
+    }
+
+    public UpdateClause Add(string column, object? value)
+    {
+        return Add(new UpdateItem(column, value));
+    }
+
+    public static UpdateClause Create(params UpdateItem[] items)
+    {
+        return new UpdateClause(items);
+    }
+
+    public List<string> GetRelatedColumns()
+    {
+        return Items.Select(i => i.ColumnName).ToList();
+    }
+
+    public (string sql, ParamList parameters) GenerateSql()
+    {
+        var parameters = new ParamList();
+
+        StringBuilder result = new StringBuilder();
+
+        foreach (var item in Items)
+        {
+            if (result.Length > 0)
+            {
+                result.Append(", ");
+            }
+
+            var parameterName = parameters.AddRandomNameParameter(item.Value, item.ColumnName);
+            result.Append($"{item.ColumnName} = @{parameterName}");
+        }
+
+        return (result.ToString(), parameters);
+    }
+}
-- 
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