source

Created by: Andrew

trunk/Common/Data/Meta.cs

@@ -0,0 +1,70 @@
+using System;
+using System.Collections.Generic;
+
+namespace KartExtreme.Data
+{
+    internal static class Meta
+    {
+        public static Dictionary<string, Dictionary<string, Column>> Tables = new Dictionary<string, Dictionary<string, Column>>();
+
+        public static void Initialize()
+        {
+            Meta.Tables.Clear();
+
+            foreach (dynamic datum in new Datums("COLUMNS").Populate("TABLE_SCHEMA = '{0}'", Database.DefaultSchema))
+            {
+                Meta.Add(datum);
+            }
+        }
+
+        private static void Add(dynamic datum)
+        {
+            Dictionary<string, Column> table;
+
+            string tableName = datum.TABLE_NAME;
+
+            if (Meta.Tables.ContainsKey(tableName))
+            {
+                table = Meta.Tables[tableName];
+            }
+            else
+            {
+                table = new Dictionary<string, Column>();
+                Meta.Tables.Add(tableName, table);
+            }
+
+            table.Add(datum.COLUMN_NAME, new Column(datum));
+        }
+
+        public static bool IsBool(String tableName, String fieldName)
+        {
+            return Meta.Tables[tableName][fieldName].ColumnType == "tinyint(1) unsigned";
+        }
+
+        public static bool IsDate(String tableName, String fieldName)
+        {
+            return Meta.Tables[tableName][fieldName].ColumnType == "date";
+        }
+
+        public static bool IsDateTime(String tableName, String fieldName)
+        {
+            return Meta.Tables[tableName][fieldName].ColumnType == "datetime";
+        }
+    }
+
+    internal class Column
+    {
+        public string Name { get; private set; }
+        public bool IsPrimaryKey { get; private set; }
+        public bool IsUniqueKey { get; private set; }
+        public string ColumnType { get; private set; }
+
+        public Column(dynamic datum)
+        {
+            this.Name = datum.COLUMN_NAME;
+            this.IsPrimaryKey = datum.COLUMN_KEY == "PRI";
+            this.IsUniqueKey = datum.COLUMN_KEY == "UNI";
+            this.ColumnType = datum.COLUMN_TYPE;
+        }
+    }
+}