mirror of
https://github.com/nsnail/FreeSql.git
synced 2025-04-22 18:52:50 +08:00
247 lines
14 KiB
C#
247 lines
14 KiB
C#
using FreeSql.DataAnnotations;
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using FreeSql.DatabaseModel;
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using FreeSql.Internal;
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using FreeSql.Internal.Model;
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using System;
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using System.Collections.Concurrent;
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using System.Collections.Generic;
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using System.Data;
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using System.Linq;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace FreeSql.Sqlite {
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class SqliteCodeFirst : ICodeFirst {
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IFreeSql _orm;
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protected CommonUtils _commonUtils;
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protected CommonExpression _commonExpression;
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public SqliteCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) {
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_orm = orm;
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_commonUtils = commonUtils;
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_commonExpression = commonExpression;
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}
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public bool IsAutoSyncStructure { get; set; } = true;
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public bool IsQuoteSqlName { get; set; } = true;
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public bool IsSyncStructureToLower { get; set; } = false;
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public bool IsLazyLoading { get; set; } = false;
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static object _dicCsToDbLock = new object();
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static Dictionary<string, (DbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (DbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
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{ typeof(bool).FullName, (DbType.Boolean, "boolean","boolean NOT NULL", null, false, false) },{ typeof(bool?).FullName, (DbType.Boolean, "boolean","boolean", null, true, null) },
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{ typeof(sbyte).FullName, (DbType.SByte, "smallint", "smallint NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName, (DbType.SByte, "smallint", "smallint", false, true, null) },
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{ typeof(short).FullName, (DbType.Int16, "smallint","smallint NOT NULL", false, false, 0) },{ typeof(short?).FullName, (DbType.Int16, "smallint", "smallint", false, true, null) },
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{ typeof(int).FullName, (DbType.Int32, "integer", "integer NOT NULL", false, false, 0) },{ typeof(int?).FullName, (DbType.Int32, "integer", "integer", false, true, null) },
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{ typeof(long).FullName, (DbType.Int64, "integer","integer NOT NULL", false, false, 0) },{ typeof(long?).FullName, (DbType.Int64, "integer","integer", false, true, null) },
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{ typeof(byte).FullName, (DbType.Byte, "int2","int2 NOT NULL", true, false, 0) },{ typeof(byte?).FullName, (DbType.Byte, "int2","int2", true, true, null) },
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{ typeof(ushort).FullName, (DbType.UInt16, "unsigned","unsigned NOT NULL", true, false, 0) },{ typeof(ushort?).FullName, (DbType.UInt16, "unsigned", "unsigned", true, true, null) },
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{ typeof(uint).FullName, (DbType.Decimal, "decimal(10,0)", "decimal(10,0) NOT NULL", true, false, 0) },{ typeof(uint?).FullName, (DbType.Decimal, "decimal(10,0)", "decimal(10,0)", true, true, null) },
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{ typeof(ulong).FullName, (DbType.Decimal, "decimal(21,0)", "decimal(21,0) NOT NULL", true, false, 0) },{ typeof(ulong?).FullName, (DbType.Decimal, "decimal(21,0)", "decimal(21,0)", true, true, null) },
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{ typeof(double).FullName, (DbType.Double, "double", "double NOT NULL", false, false, 0) },{ typeof(double?).FullName, (DbType.Double, "double", "double", false, true, null) },
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{ typeof(float).FullName, (DbType.Single, "float","float NOT NULL", false, false, 0) },{ typeof(float?).FullName, (DbType.Single, "float","float", false, true, null) },
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{ typeof(decimal).FullName, (DbType.Decimal, "decimal", "decimal(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, (DbType.Decimal, "decimal", "decimal(10,2)", false, true, null) },
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{ typeof(TimeSpan).FullName, (DbType.Time, "bigint","bigint NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, (DbType.Time, "bigint", "bigint",false, true, null) },
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{ typeof(DateTime).FullName, (DbType.DateTime, "datetime", "datetime NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, (DbType.DateTime, "datetime", "datetime", false, true, null) },
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{ typeof(byte[]).FullName, (DbType.Binary, "blob", "blob", false, null, new byte[0]) },
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{ typeof(string).FullName, (DbType.String, "nvarchar", "nvarchar(255)", false, null, "") },
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{ typeof(Guid).FullName, (DbType.Guid, "character", "character(36) NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName, (DbType.Guid, "character", "character(36)", false, true, null) },
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};
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public (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type) {
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if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?, object)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable, trydc.defaultValue));
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if (type.IsArray) return null;
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var enumType = type.IsEnum ? type : null;
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if (enumType == null && type.IsNullableType() && type.GenericTypeArguments.Length == 1 && type.GenericTypeArguments.First().IsEnum) enumType = type.GenericTypeArguments.First();
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if (enumType != null) {
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var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
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(DbType.Int64, "bigint", $"bigint{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0)) :
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(DbType.Int32, "mediumint", $"mediumint{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0));
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if (_dicCsToDb.ContainsKey(type.FullName) == false) {
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lock (_dicCsToDbLock) {
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if (_dicCsToDb.ContainsKey(type.FullName) == false)
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_dicCsToDb.Add(type.FullName, newItem);
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}
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}
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return ((int)newItem.Item1, newItem.Item2, newItem.Item3, newItem.Item5, newItem.Item6);
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}
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return null;
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}
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public string GetComparisonDDLStatements<TEntity>() => this.GetComparisonDDLStatements(typeof(TEntity));
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public string GetComparisonDDLStatements(params Type[] entityTypes) {
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var sb = new StringBuilder();
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var sbDeclare = new StringBuilder();
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foreach (var entityType in entityTypes) {
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if (sb.Length > 0) sb.Append("\r\n");
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var tb = _commonUtils.GetTableByEntity(entityType);
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var tbname = tb.DbName.Split(new[] { '.' }, 2);
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if (tbname?.Length == 1) tbname = new[] { "main", tbname[0] };
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var tboldname = tb.DbOldName?.Split(new[] { '.' }, 2); //旧表名
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if (tboldname?.Length == 1) tboldname = new[] { "main", tboldname[0] };
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var sbalter = new StringBuilder();
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var istmpatler = false; //创建临时表，导入数据，删除旧表，修改
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var isIndent = false;
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if (_orm.Ado.ExecuteScalar(CommandType.Text, $" select 1 from {tbname[0]}.sqlite_master where type='table' and name='{tbname[1]}'") == null) { //表不存在
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if (tboldname != null) {
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if (_orm.Ado.ExecuteScalar(CommandType.Text, $" select 1 from {tboldname[0]}.sqlite_master where type='table' and name='{tboldname[1]}'") == null)
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//模式或表不存在
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tboldname = null;
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}
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if (tboldname == null) {
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//创建表
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sb.Append("CREATE TABLE IF NOT EXISTS ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" (");
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foreach (var tbcol in tb.Columns.Values) {
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sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ");
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sb.Append(tbcol.Attribute.DbType);
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if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTOINCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1) {
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isIndent = true;
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sb.Append(" PRIMARY KEY AUTOINCREMENT");
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}
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sb.Append(",");
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}
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if (isIndent || tb.Primarys.Any() == false)
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sb.Remove(sb.Length - 1, 1);
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else {
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sb.Append(" \r\n PRIMARY KEY (");
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foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
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sb.Remove(sb.Length - 2, 2).Append(")");
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}
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sb.Append("\r\n) \r\n;\r\n");
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continue;
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}
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//如果新表，旧表在一个模式下，直接修改表名
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if (string.Compare(tbname[0], tboldname[0], true) == 0)
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}")).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append(";\r\n");
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else {
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//如果新表，旧表不在一起，创建新表，导入数据，删除旧表
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istmpatler = true;
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}
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} else
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tboldname = null; //如果新表已经存在，不走改表名逻辑
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//对比字段，只可以修改类型、增加字段、有限的修改字段名；保证安全不删除字段
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var tbtmp = tboldname ?? tbname;
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var dsql = _orm.Ado.ExecuteScalar(CommandType.Text, $" select sql from {tbtmp[0]}.sqlite_master where type='table' and name='{tbtmp[1]}'")?.ToString();
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var ds = _orm.Ado.ExecuteArray(CommandType.Text, $"PRAGMA {_commonUtils.QuoteSqlName(tbtmp[0])}.table_info({_commonUtils.QuoteSqlName(tbtmp[1])})");
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var tbstruct = ds.ToDictionary(a => string.Concat(a[1]), a => {
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var is_identity = false;
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var dsqlIdx = dsql?.IndexOf($"\"{a[1]}\" ");
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if (dsqlIdx > 0) {
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var dsqlLastIdx = dsql.IndexOf('\n', dsqlIdx.Value);
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if (dsqlLastIdx > 0) is_identity = dsql.Substring(dsqlIdx.Value, dsqlLastIdx - dsqlIdx.Value).Contains("AUTOINCREMENT");
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}
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return new {
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column = string.Concat(a[1]),
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sqlType = string.Concat(a[2]).ToUpper(),
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is_nullable = string.Concat(a[3]) == "0",
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is_identity
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};
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}, StringComparer.CurrentCultureIgnoreCase);
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if (istmpatler == false) {
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foreach (var tbcol in tb.Columns.Values) {
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var dbtypeNoneNotNull = Regex.Replace(tbcol.Attribute.DbType, @"NOT\s+NULL", "NULL");
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if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
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string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol)) {
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if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
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istmpatler = true;
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if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
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istmpatler = true;
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if (tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
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istmpatler = true;
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if (tbstructcol.column == tbcol.Attribute.OldName)
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//修改列名
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istmpatler = true;
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continue;
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}
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//添加列
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istmpatler = true;
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}
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}
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if (istmpatler == false) {
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sb.Append(sbalter);
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continue;
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}
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//创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
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var tablename = tboldname == null ? _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}");
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var tmptablename = _commonUtils.QuoteSqlName($"{tbname[0]}._FreeSqlTmp_{tbname[1]}");
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//创建临时表
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//创建表
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isIndent = false;
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sb.Append("CREATE TABLE IF NOT EXISTS ").Append(tmptablename).Append(" (");
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foreach (var tbcol in tb.Columns.Values) {
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sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ");
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sb.Append(tbcol.Attribute.DbType);
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if (tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTOINCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1) {
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isIndent = true;
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sb.Append(" PRIMARY KEY AUTOINCREMENT");
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}
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sb.Append(",");
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}
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if (isIndent || tb.Primarys.Any() == false)
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sb.Remove(sb.Length - 1, 1);
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else {
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sb.Append(" \r\n PRIMARY KEY (");
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foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
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sb.Remove(sb.Length - 2, 2).Append(")");
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}
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sb.Append("\r\n) \r\n;\r\n");
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sb.Append("INSERT INTO ").Append(tmptablename).Append(" (");
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foreach (var tbcol in tb.Columns.Values)
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sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
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sb.Remove(sb.Length - 2, 2).Append(")\r\nSELECT ");
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foreach (var tbcol in tb.Columns.Values) {
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var insertvalue = "NULL";
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if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
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string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol)) {
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insertvalue = _commonUtils.QuoteSqlName(tbstructcol.column);
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if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false) {
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var dbtypeNoneNotNull = Regex.Replace(tbcol.Attribute.DbType, @"(NOT\s+)?NULL", "");
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insertvalue = $"cast({insertvalue} as {dbtypeNoneNotNull})";
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}
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if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
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insertvalue = $"ifnull({insertvalue},{_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue)})";
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} else if (tbcol.Attribute.IsNullable == false)
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insertvalue = _commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue);
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sb.Append(insertvalue).Append(", ");
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}
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sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append(";\r\n");
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sb.Append("DROP TABLE ").Append(tablename).Append(";\r\n");
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sb.Append("ALTER TABLE ").Append(tmptablename).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append(";\r\n");
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}
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return sb.Length == 0 ? null : sb.ToString();
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}
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static object syncStructureLock = new object();
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ConcurrentDictionary<string, bool> dicSyced = new ConcurrentDictionary<string, bool>();
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public bool SyncStructure<TEntity>() => this.SyncStructure(typeof(TEntity));
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public bool SyncStructure(params Type[] entityTypes) {
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if (entityTypes == null) return true;
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var syncTypes = entityTypes.Where(a => dicSyced.ContainsKey(a.FullName) == false).ToArray();
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if (syncTypes.Any() == false) return true;
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lock (syncStructureLock) {
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var ddl = this.GetComparisonDDLStatements(syncTypes);
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if (string.IsNullOrEmpty(ddl)) {
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foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
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return true;
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}
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var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
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foreach (var syncType in syncTypes) dicSyced.TryAdd(syncType.FullName, true);
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return affrows > 0;
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}
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}
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public ICodeFirst ConfigEntity<T>(Action<TableFluent<T>> entity) => _commonUtils.ConfigEntity(entity);
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public ICodeFirst ConfigEntity(Type type, Action<TableFluent> entity) => _commonUtils.ConfigEntity(type, entity);
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public TableAttribute GetConfigEntity(Type type) => _commonUtils.GetConfigEntity(type);
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}
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} |