Split BuiltInResources into multiple files to improve maintainability.

Author: RyanLamansky

SqlServerSimulator/BuiltInResources.ColumnFamily.cs

@@ -0,0 +1,100 @@
+using SqlServerSimulator.Storage;
+using System.Globalization;
+
+namespace SqlServerSimulator;
+
+internal static partial class BuiltInResources
+{
+    internal static readonly object?[][] SystypesRowData =
+    [
+        ["image", 34, 0, 34, 16, 0, 0, 0, 0, 4, 0, null, 20, false, true, 34, null, null, null, null],
+        ["text", 35, 0, 35, 16, 0, 0, 0, 0, 4, 0, 872468488, 19, false, true, 35, null, null, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["uniqueidentifier", 36, 0, 36, 16, 0, 0, 0, 0, 4, 0, null, 0, false, true, 37, null, 16, null, null],
+        ["date", 40, 0, 40, 3, 10, 0, 0, 0, 4, 0, null, 0, false, true, 0, null, 10, 0, null],
+        ["time", 41, 0, 41, 5, 16, 7, 0, 0, 4, 0, null, 0, false, true, 0, null, 16, 7, null],
+        ["datetime2", 42, 0, 42, 8, 27, 7, 0, 0, 4, 0, null, 0, false, true, 0, null, 27, 7, null],
+        ["datetimeoffset", 43, 0, 43, 10, 34, 7, 0, 0, 4, 0, null, 0, false, true, 0, null, 34, 7, null],
+        ["tinyint", 48, 0, 48, 1, 3, 0, 0, 0, 4, 0, null, 5, false, true, 48, null, 3, 0, null],
+        ["smallint", 52, 0, 52, 2, 5, 0, 0, 0, 4, 0, null, 6, false, true, 52, null, 5, 0, null],
+        ["int", 56, 0, 56, 4, 10, 0, 0, 0, 4, 0, null, 7, false, true, 56, null, 10, 0, null],
+        ["smalldatetime", 58, 0, 58, 4, 16, 0, 0, 0, 4, 0, null, 22, false, true, 58, null, 16, 0, null],
+        ["real", 59, 0, 59, 4, 24, 0, 0, 0, 4, 0, null, 23, false, true, 59, null, 24, null, null],
+        ["money", 60, 0, 60, 8, 19, 4, 0, 0, 4, 0, null, 11, false, true, 60, null, 19, 4, null],
+        ["datetime", 61, 0, 61, 8, 23, 3, 0, 0, 4, 0, null, 12, false, true, 61, null, 23, 3, null],
+        ["float", 62, 0, 62, 8, 53, 0, 0, 0, 4, 0, null, 8, false, true, 62, null, 53, null, null],
+        ["sql_variant", 98, 0, 98, 8016, 0, 0, 0, 0, 4, 0, null, 0, false, true, 39, null, 0, null, null],
+        ["ntext", 99, 0, 99, 16, 0, 0, 0, 0, 4, 0, 872468488, 0, false, true, 35, null, null, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["bit", 104, 0, 104, 1, 1, 0, 0, 0, 4, 0, null, 16, false, true, 50, null, 1, null, null],
+        ["decimal", 106, 0, 106, 17, 38, 38, 0, 0, 4, 0, null, 24, false, true, 55, null, 38, 38, null],
+        ["numeric", 108, 0, 108, 17, 38, 38, 0, 0, 4, 0, null, 10, false, true, 63, null, 38, 38, null],
+        ["smallmoney", 122, 0, 122, 4, 10, 4, 0, 0, 4, 0, null, 21, false, true, 122, null, 10, 4, null],
+        ["bigint", 127, 0, 127, 8, 19, 0, 0, 0, 4, 0, null, 0, false, true, 63, null, 19, 0, null],
+        ["hierarchyid", 240, 0, 128, 892, 0, 0, 0, 0, 4, 0, null, 0, false, true, 0, null, 892, null, null],
+        ["geometry", 240, 0, 129, -1, 0, 0, 0, 0, 4, 0, null, 0, false, true, 0, null, -1, null, null],
+        ["geography", 240, 0, 130, -1, 0, 0, 0, 0, 4, 0, null, 0, false, true, 0, null, -1, null, null],
+        ["varbinary", 165, 0, 165, 8000, 0, 0, 0, 0, 4, 0, null, 4, true, true, 37, null, 8000, null, null],
+        ["varchar", 167, 0, 167, 8000, 0, 0, 0, 0, 4, 0, 872468488, 2, true, true, 39, null, 8000, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["binary", 173, 0, 173, 8000, 0, 0, 0, 0, 4, 0, null, 3, false, true, 45, null, 8000, null, null],
+        ["char", 175, 0, 175, 8000, 0, 0, 0, 0, 4, 0, 872468488, 1, false, true, 47, null, 8000, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["timestamp", 189, 1, 189, 8, 0, 0, 0, 0, 4, 0, null, 80, false, false, 45, null, 8, null, null],
+        ["nvarchar", 231, 0, 231, 8000, 0, 0, 0, 0, 4, 0, 872468488, 0, true, true, 39, null, 4000, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["nchar", 239, 0, 239, 8000, 0, 0, 0, 0, 4, 0, 872468488, 0, false, true, 47, null, 4000, null, "SQL_Latin1_General_CP1_CI_AS"],
+        ["xml", 241, 0, 241, -1, 0, 0, 0, 0, 4, 0, null, 0, false, true, 0, null, -1, null, null],
+        ["sysname", 231, 1, 256, 256, 0, 0, 0, 0, 4, 0, 872468488, 18, true, false, 39, null, 128, null, "SQL_Latin1_General_CP1_CI_AS"],
+    ];
+
+    public static readonly Lazy<Dictionary<string, HeapTable>> SystemHeapTables = new(BuildSystemHeapTables);
+
+    private static Dictionary<string, HeapTable> BuildSystemHeapTables()
+    {
+        HeapColumn[] systypesColumns =
+        [
+            new("name", SqlType.SystemName, 128, false),
+            new("xtype", SqlType.TinyInt, null, false),
+            new("status", SqlType.TinyInt, null, true),
+            new("xusertype", SqlType.SmallInt, null, true),
+            new("length", SqlType.SmallInt, null, false),
+            new("xprec", SqlType.TinyInt, null, false),
+            new("xscale", SqlType.TinyInt, null, false),
+            new("tdefault", SqlType.Int32, null, false),
+            new("domain", SqlType.Int32, null, false),
+            new("uid", SqlType.SmallInt, null, true),
+            new("reserved", SqlType.SmallInt, null, true),
+            new("collationid", SqlType.Int32, null, true),
+            new("usertype", SqlType.SmallInt, null, true),
+            new("variable", SqlType.Bit, null, false),
+            new("allownulls", SqlType.Bit, null, true),
+            new("type", SqlType.TinyInt, null, false),
+            new("printfmt", SqlType.Varchar, 255, true),
+            new("prec", SqlType.SmallInt, null, true),
+            new("scale", SqlType.TinyInt, null, true),
+            new("collation", SqlType.SystemName, 128, true),
+        ];
+        // System tables live outside any user database's id space — they're
+        // process-shared and the simulator doesn't expose them via OBJECT_ID
+        // (which routes through per-DB schema resolution). A small negative
+        // id keeps them distinguishable in debug output.
+        var systypes = new HeapTable("systypes", systypesColumns, objectId: -1);
+
+        foreach (var row in SystypesRowData)
+        {
+            var values = new SqlValue[systypesColumns.Length];
+            for (var i = 0; i < systypesColumns.Length; i++)
+                values[i] = ObjectToSqlValue(row[i], systypesColumns[i].Type);
+
+            _ = systypes.Heap.Insert(RowEncoder.EncodeRow(systypes.Schema, values));
+        }
+
+        return new(BuiltInToken.Comparer) { [systypes.Name] = systypes };
+    }
+
+    private static SqlValue ObjectToSqlValue(object? value, SqlType type) =>
+        value is null ? SqlValue.Null(type)
+        : type == SqlType.TinyInt ? SqlValue.FromByte(Convert.ToByte(value, CultureInfo.InvariantCulture))
+        : type == SqlType.SmallInt ? SqlValue.FromInt16(Convert.ToInt16(value, CultureInfo.InvariantCulture))
+        : type == SqlType.Int32 ? SqlValue.FromInt32(Convert.ToInt32(value, CultureInfo.InvariantCulture))
+        : type == SqlType.Bit ? SqlValue.FromBoolean((bool)value)
+        : type is VarcharSqlType ? SqlValue.FromVarchar((string)value)
+        : type == SqlType.SystemName ? SqlValue.FromSystemName((string)value)
+        : throw new NotSupportedException($"Built-in resource materializer doesn't know how to convert {value.GetType().Name} to {type}.");
+}