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## v0.9.17 (ODBC)
- 增加 FreeSql.Provider.Odbc，实现 Oracle/SqlServer/MySql 的 Odbc 访问提供； - 增加 FreeSqlBuilder.UseConnectionString 参数 providerType，可解决因包版本冲突时，可能无法反射获得 FreeSql.Provider 对应的类型，通常这个参数不需要设置； - 优化 MaxLength 特性，当指定为 -1 时 DbType 会分别映射类型 text/nvarchar(max)/nvarchar2(4000)；
This commit is contained in:
28810
337
Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs
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337
Providers/FreeSql.Provider.Odbc/MySql/OdbcMySqlCodeFirst.cs
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@ -0,0 +1,337 @@
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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.Data.Odbc;
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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.Odbc.MySql
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{
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class OdbcMySqlCodeFirst : Internal.CommonProvider.CodeFirstProvider
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{
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public override bool IsNoneCommandParameter { get => true; set => base.IsNoneCommandParameter = true; }
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public OdbcMySqlCodeFirst(IFreeSql orm, CommonUtils commonUtils, CommonExpression commonExpression) : base(orm, commonUtils, commonExpression) { }
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static object _dicCsToDbLock = new object();
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static Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)> _dicCsToDb = new Dictionary<string, (OdbcType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable, object defaultValue)>() {
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{ typeof(bool).FullName, (OdbcType.Bit, "bit","bit(1) NOT NULL", null, false, false) },{ typeof(bool?).FullName, (OdbcType.Bit, "bit","bit(1)", null, true, null) },
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{ typeof(sbyte).FullName, (OdbcType.SmallInt, "tinyint", "tinyint(3) NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName, (OdbcType.SmallInt, "tinyint", "tinyint(3)", false, true, null) },
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{ typeof(short).FullName, (OdbcType.SmallInt, "smallint","smallint(6) NOT NULL", false, false, 0) },{ typeof(short?).FullName, (OdbcType.SmallInt, "smallint", "smallint(6)", false, true, null) },
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{ typeof(int).FullName, (OdbcType.Int, "int", "int(11) NOT NULL", false, false, 0) },{ typeof(int?).FullName, (OdbcType.Int, "int", "int(11)", false, true, null) },
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{ typeof(long).FullName, (OdbcType.BigInt, "bigint","bigint(20) NOT NULL", false, false, 0) },{ typeof(long?).FullName, (OdbcType.BigInt, "bigint","bigint(20)", false, true, null) },
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{ typeof(byte).FullName, (OdbcType.TinyInt, "tinyint","tinyint(3) unsigned NOT NULL", true, false, 0) },{ typeof(byte?).FullName, (OdbcType.TinyInt, "tinyint","tinyint(3) unsigned", true, true, null) },
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{ typeof(ushort).FullName, (OdbcType.Int, "smallint","smallint(5) unsigned NOT NULL", true, false, 0) },{ typeof(ushort?).FullName, (OdbcType.Int, "smallint", "smallint(5) unsigned", true, true, null) },
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{ typeof(uint).FullName, (OdbcType.BigInt, "int", "int(10) unsigned NOT NULL", true, false, 0) },{ typeof(uint?).FullName, (OdbcType.BigInt, "int", "int(10) unsigned", true, true, null) },
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{ typeof(ulong).FullName, (OdbcType.Decimal, "bigint", "bigint(20) unsigned NOT NULL", true, false, 0) },{ typeof(ulong?).FullName, (OdbcType.Decimal, "bigint", "bigint(20) unsigned", true, true, null) },
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{ typeof(double).FullName, (OdbcType.Double, "double", "double NOT NULL", false, false, 0) },{ typeof(double?).FullName, (OdbcType.Double, "double", "double", false, true, null) },
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{ typeof(float).FullName, (OdbcType.Real, "float","float NOT NULL", false, false, 0) },{ typeof(float?).FullName, (OdbcType.Real, "float","float", false, true, null) },
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{ typeof(decimal).FullName, (OdbcType.Decimal, "decimal", "decimal(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, (OdbcType.Decimal, "decimal", "decimal(10,2)", false, true, null) },
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{ typeof(TimeSpan).FullName, (OdbcType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, (OdbcType.Time, "time", "time",false, true, null) },
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{ typeof(DateTime).FullName, (OdbcType.DateTime, "datetime(3)", "datetime(3) NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, (OdbcType.DateTime, "datetime(3)", "datetime(3)", false, true, null) },
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{ typeof(byte[]).FullName, (OdbcType.VarBinary, "varbinary", "varbinary(255)", false, null, new byte[0]) },
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{ typeof(string).FullName, (OdbcType.VarChar, "varchar", "varchar(255)", false, null, "") },
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{ typeof(Guid).FullName, (OdbcType.VarChar, "char", "char(36) NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName, (OdbcType.VarChar, "char", "char(36)", false, true, null) },
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};
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public override (int type, string dbtype, string dbtypeFull, bool? isnullable, object defaultValue)? GetDbInfo(Type type)
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{
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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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{
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var names = string.Join(",", Enum.GetNames(enumType).Select(a => _commonUtils.FormatSql("{0}", a)));
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var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
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(OdbcType.VarChar, "set", $"set({names}){(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, Enum.GetValues(enumType).GetValue(0)) :
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(OdbcType.VarChar, "enum", $"enum({names}){(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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{
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lock (_dicCsToDbLock)
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{
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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 override string GetComparisonDDLStatements(params Type[] entityTypes)
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{
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var conn = _orm.Ado.MasterPool.Get(TimeSpan.FromSeconds(5));
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var database = conn.Value.Database;
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Func<string, string, object> ExecuteScalar = (db, sql) =>
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{
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if (string.Compare(database, db) != 0) conn.Value.ChangeDatabase(db);
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try
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{
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using (var cmd = conn.Value.CreateCommand())
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{
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cmd.CommandText = sql;
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cmd.CommandType = CommandType.Text;
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return cmd.ExecuteScalar();
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}
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}
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finally
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{
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if (string.Compare(database, db) != 0) conn.Value.ChangeDatabase(database);
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}
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};
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var sb = new StringBuilder();
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try
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{
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foreach (var entityType in entityTypes)
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{
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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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if (tb == null) throw new Exception($"类型 {entityType.FullName} 不可迁移");
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if (tb.Columns.Any() == false) throw new Exception($"类型 {entityType.FullName} 不可迁移，可迁移属性0个");
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var tbname = tb.DbName.Split(new[] { '.' }, 2);
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if (tbname?.Length == 1) tbname = new[] { database, tbname[0] };
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var tboldname = tb.DbOldName?.Split(new[] { '.' }, 2); //旧表名
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if (tboldname?.Length == 1) tboldname = new[] { database, tboldname[0] };
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if (string.Compare(tbname[0], database, true) != 0 && ExecuteScalar(database, _commonUtils.FormatSql(" select 1 from information_schema.schemata where schema_name={0}", tbname[0])) == null) //创建数据库
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sb.Append($"CREATE DATABASE IF NOT EXISTS ").Append(_commonUtils.QuoteSqlName(tbname[0])).Append(" default charset utf8 COLLATE utf8_general_ci;\r\n");
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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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if (ExecuteScalar(tbname[0], _commonUtils.FormatSql(" SELECT 1 FROM information_schema.TABLES WHERE table_schema={0} and table_name={1}", tbname)) == null)
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{ //表不存在
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if (tboldname != null)
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{
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if (string.Compare(tboldname[0], tbname[0], true) != 0 && ExecuteScalar(database, _commonUtils.FormatSql(" select 1 from information_schema.schemata where schema_name={0}", tboldname[0])) == null ||
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ExecuteScalar(tboldname[0], _commonUtils.FormatSql(" SELECT 1 FROM information_schema.TABLES WHERE table_schema={0} and table_name={1}", tboldname)) == null)
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//数据库或表不存在
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tboldname = null;
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}
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if (tboldname == null)
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{
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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.ColumnsByPosition)
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{
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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("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" AUTO_INCREMENT");
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if (string.IsNullOrEmpty(tbcol.Comment) == false) sb.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment));
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sb.Append(",");
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}
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if (tb.Primarys.Any())
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{
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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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foreach (var uk in tb.Uniques)
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{
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sb.Append(" \r\n UNIQUE KEY ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append("(");
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foreach (var tbcol in uk.Value) 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.Remove(sb.Length - 1, 1);
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sb.Append("\r\n) Engine=InnoDB;\r\n");
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continue;
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}
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//如果新表，旧表在一个数据库下，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[0]}.{tbname[1]}")).Append(";\r\n");
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else
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{
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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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}
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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 sql = _commonUtils.FormatSql(@"
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select
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a.column_name,
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a.column_type,
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case when a.is_nullable = 'YES' then 1 else 0 end 'is_nullable',
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case when locate('auto_increment', a.extra) > 0 then 1 else 0 end 'is_identity',
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a.column_comment 'comment'
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from information_schema.columns a
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where a.table_schema in ({0}) and a.table_name in ({1})", tboldname ?? tbname);
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var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
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var tbstruct = ds.ToDictionary(a => string.Concat(a[0]), a =>
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{
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var a1 = string.Concat(a[1]);
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if (a1 == "datetime") a1 = string.Concat(a1, "(0)");
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return new
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{
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column = string.Concat(a[0]),
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sqlType = a1,
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is_nullable = string.Concat(a[2]) == "1",
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is_identity = string.Concat(a[3]) == "1",
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is_unsigned = string.Concat(a[1]).EndsWith(" unsigned"),
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comment = string.Concat(a[4])
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};
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}, StringComparer.CurrentCultureIgnoreCase);
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if (istmpatler == false)
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{
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var existsPrimary = ExecuteScalar(tbname[0], _commonUtils.FormatSql("select 1 from information_schema.key_column_usage where table_schema={0} and table_name={1} and constraint_name = 'PRIMARY' limit 1", tbname));
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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var isIdentityChanged = tbcol.Attribute.IsIdentity == true && tbcol.Attribute.DbType.IndexOf("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1;
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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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{
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var isCommentChanged = tbstructcol.comment != (tbcol.Comment ?? "");
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if ((tbcol.Attribute.DbType.IndexOf(" unsigned", StringComparison.CurrentCultureIgnoreCase) != -1) != tbstructcol.is_unsigned ||
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tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
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tbcol.Attribute.IsNullable != tbstructcol.is_nullable ||
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tbcol.Attribute.IsIdentity != tbstructcol.is_identity ||
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isCommentChanged)
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{
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" MODIFY ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.DbType);
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if (isCommentChanged) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
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if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(")");
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sbalter.Append(";\r\n");
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}
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if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)
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{
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//修改列名
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" CHANGE COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
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if (isCommentChanged) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
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if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
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sbalter.Append(";\r\n");
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}
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continue;
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}
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//添加列
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType);
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if (tbcol.Attribute.IsNullable == false) sbalter.Append(" DEFAULT ").Append(_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue));
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if (string.IsNullOrEmpty(tbcol.Comment) == false) sbalter.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment ?? ""));
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if (isIdentityChanged) sbalter.Append(" AUTO_INCREMENT").Append(existsPrimary == null ? "" : ", DROP PRIMARY KEY").Append(", ADD PRIMARY KEY(").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(")");
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sbalter.Append(";\r\n");
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}
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var dsuksql = _commonUtils.FormatSql(@"
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select
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a.column_name,
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a.constraint_name 'index_id'
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from information_schema.key_column_usage a
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where a.constraint_schema IN ({0}) and a.table_name IN ({1})", tboldname ?? tbname);
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var dsuk = _orm.Ado.ExecuteArray(CommandType.Text, dsuksql).Select(a => new[] { string.Concat(a[0]), string.Concat(a[1]) });
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foreach (var uk in tb.Uniques)
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{
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if (uk.Key == "PRIMARY" || string.IsNullOrEmpty(uk.Key) || uk.Value.Any() == false) continue;
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var dsukfind1 = dsuk.Where(a => string.Compare(a[1], uk.Key, true) == 0).ToArray();
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if (dsukfind1.Any() == false || dsukfind1.Length != uk.Value.Count || dsukfind1.Where(a => uk.Value.Where(b => string.Compare(b.Attribute.Name, a[0], true) == 0).Any()).Count() != uk.Value.Count)
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{
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if (dsukfind1.Any()) sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP INDEX ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(";\r\n");
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD CONSTRAINT ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append(" UNIQUE(");
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foreach (var tbcol in uk.Value) sbalter.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
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sbalter.Remove(sbalter.Length - 2, 2).Append(");\r\n");
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}
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}
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}
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if (istmpatler == false)
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{
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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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sb.Append("CREATE TABLE IF NOT EXISTS ").Append(tmptablename).Append(" ( ");
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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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("AUTO_INCREMENT", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" AUTO_INCREMENT");
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if (string.IsNullOrEmpty(tbcol.Comment) == false) sb.Append(" COMMENT ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment));
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sb.Append(",");
|
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}
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if (tb.Primarys.Any())
|
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{
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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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foreach (var uk in tb.Uniques)
|
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{
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sb.Append(" \r\n UNIQUE KEY ").Append(_commonUtils.QuoteSqlName(uk.Key)).Append("(");
|
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foreach (var tbcol in uk.Value) 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.Remove(sb.Length - 1, 1);
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sb.Append("\r\n) Engine=InnoDB;\r\n");
|
||||
sb.Append("INSERT INTO ").Append(tmptablename).Append(" (");
|
||||
foreach (var tbcol in tb.ColumnsByPosition)
|
||||
sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
|
||||
sb.Remove(sb.Length - 2, 2).Append(")\r\nSELECT ");
|
||||
foreach (var tbcol in tb.ColumnsByPosition)
|
||||
{
|
||||
var insertvalue = "NULL";
|
||||
if (tbstruct.TryGetValue(tbcol.Attribute.Name, out var tbstructcol) ||
|
||||
string.IsNullOrEmpty(tbcol.Attribute.OldName) == false && tbstruct.TryGetValue(tbcol.Attribute.OldName, out tbstructcol))
|
||||
{
|
||||
insertvalue = _commonUtils.QuoteSqlName(tbstructcol.column);
|
||||
if (tbcol.Attribute.DbType.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false)
|
||||
{
|
||||
//insertvalue = $"cast({insertvalue} as {tbcol.Attribute.DbType.Split(' ').First()})";
|
||||
}
|
||||
if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
|
||||
insertvalue = $"ifnull({insertvalue},{_commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue)})";
|
||||
}
|
||||
else if (tbcol.Attribute.IsNullable == false)
|
||||
insertvalue = _commonUtils.FormatSql("{0}", tbcol.Attribute.DbDefautValue);
|
||||
sb.Append(insertvalue).Append(", ");
|
||||
}
|
||||
sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append(";\r\n");
|
||||
sb.Append("DROP TABLE ").Append(tablename).Append(";\r\n");
|
||||
sb.Append("ALTER TABLE ").Append(tmptablename).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(";\r\n");
|
||||
}
|
||||
return sb.Length == 0 ? null : sb.ToString();
|
||||
}
|
||||
finally
|
||||
{
|
||||
try
|
||||
{
|
||||
conn.Value.ChangeDatabase(database);
|
||||
_orm.Ado.MasterPool.Return(conn);
|
||||
}
|
||||
catch
|
||||
{
|
||||
_orm.Ado.MasterPool.Return(conn, true);
|
||||
}
|
||||
}
|
||||
}
|
||||
|
||||
public override int ExecuteDDLStatements(string ddl)
|
||||
{
|
||||
if (string.IsNullOrEmpty(ddl)) return 0;
|
||||
var scripts = ddl.Split(new string[] { ";\r\n" }, StringSplitOptions.None).Where(a => string.IsNullOrEmpty(a.Trim()) == false).ToArray();
|
||||
|
||||
if (scripts.Any() == false) return 0;
|
||||
if (scripts.Length == 1) return base.ExecuteDDLStatements(ddl);
|
||||
|
||||
var affrows = 0;
|
||||
foreach (var script in scripts)
|
||||
affrows += base.ExecuteDDLStatements(script);
|
||||
return affrows;
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user