mirror of
https://github.com/dotnetcore/FreeSql.git
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184 lines
12 KiB
C#
184 lines
12 KiB
C#
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.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.SqlServer {
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class SqlServerCodeFirst : 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 SqlServerCodeFirst(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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static object _dicCsToDbLock = new object();
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static Dictionary<string, (SqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable)> _dicCsToDb = new Dictionary<string, (SqlDbType type, string dbtype, string dbtypeFull, bool? isUnsigned, bool? isnullable)>() {
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{ typeof(bool).FullName, (SqlDbType.Bit, "bit","bit NOT NULL", null, false) },{ typeof(bool?).FullName, (SqlDbType.Bit, "bit","bit", null, true) },
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{ typeof(sbyte).FullName, (SqlDbType.TinyInt, "tinyint", "tinyint NOT NULL", false, false) },{ typeof(sbyte?).FullName, (SqlDbType.TinyInt, "tinyint", "tinyint", false, true) },
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{ typeof(short).FullName, (SqlDbType.SmallInt, "smallint","smallint NOT NULL", false, false) },{ typeof(short?).FullName, (SqlDbType.SmallInt, "smallint", "smallint", false, true) },
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{ typeof(int).FullName, (SqlDbType.Int, "int", "int NOT NULL", false, false) },{ typeof(int?).FullName, (SqlDbType.Int, "int", "int", false, true) },
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{ typeof(long).FullName, (SqlDbType.BigInt, "bigint","bigint NOT NULL", false, false) },{ typeof(long?).FullName, (SqlDbType.BigInt, "bigint","bigint", false, true) },
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{ typeof(byte).FullName, (SqlDbType.TinyInt, "tinyint","tinyint NOT NULL", true, false) },{ typeof(byte?).FullName, (SqlDbType.TinyInt, "tinyint","tinyint", true, true) },
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{ typeof(ushort).FullName, (SqlDbType.SmallInt, "smallint","smallint NOT NULL", true, false) },{ typeof(ushort?).FullName, (SqlDbType.SmallInt, "smallint", "smallint", true, true) },
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{ typeof(uint).FullName, (SqlDbType.Int, "int", "int NOT NULL", true, false) },{ typeof(uint?).FullName, (SqlDbType.Int, "int", "int", true, true) },
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{ typeof(ulong).FullName, (SqlDbType.BigInt, "bigint", "bigint NOT NULL", true, false) },{ typeof(ulong?).FullName, (SqlDbType.BigInt, "bigint", "bigint", true, true) },
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{ typeof(double).FullName, (SqlDbType.Float, "float", "float NOT NULL", false, false) },{ typeof(double?).FullName, (SqlDbType.Float, "float", "float", false, true) },
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{ typeof(float).FullName, (SqlDbType.Real, "real","real NOT NULL", false, false) },{ typeof(float?).FullName, (SqlDbType.Real, "real","real", false, true) },
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{ typeof(decimal).FullName, (SqlDbType.Decimal, "decimal", "decimal(10,2) NOT NULL", false, false) },{ typeof(decimal?).FullName, (SqlDbType.Decimal, "decimal", "decimal(10,2)", false, true) },
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{ typeof(TimeSpan).FullName, (SqlDbType.Time, "time","time NOT NULL", false, false) },{ typeof(TimeSpan?).FullName, (SqlDbType.Time, "time", "time",false, true) },
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{ typeof(DateTime).FullName, (SqlDbType.DateTime, "datetime", "datetime NOT NULL", false, false) },{ typeof(DateTime?).FullName, (SqlDbType.DateTime, "datetime", "datetime", false, true) },
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{ typeof(DateTimeOffset).FullName, (SqlDbType.DateTimeOffset, "datetimeoffset", "datetimeoffset NOT NULL", false, false) },{ typeof(DateTimeOffset?).FullName, (SqlDbType.DateTimeOffset, "datetimeoffset", "datetimeoffset", false, true) },
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{ typeof(byte[]).FullName, (SqlDbType.VarBinary, "varbinary", "varbinary(255)", false, null) },
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{ typeof(string).FullName, (SqlDbType.NVarChar, "nvarchar", "nvarchar(255)", false, null) },
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{ typeof(Guid).FullName, (SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier NOT NULL", false, false) },{ typeof(Guid?).FullName, (SqlDbType.UniqueIdentifier, "uniqueidentifier", "uniqueidentifier", false, true) },
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};
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public (int type, string dbtype, string dbtypeFull, bool? isnullable)? GetDbInfo(Type type) {
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if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return new (int, string, string, bool?)?(((int)trydc.type, trydc.dbtype, trydc.dbtypeFull, trydc.isnullable));
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var enumType = type.IsEnum ? type : null;
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if (enumType == null && type.FullName.StartsWith("System.Nullable`1[") && 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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(SqlDbType.BigInt, "bigint", $"bigint{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true) :
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(SqlDbType.Int, "int", $"int{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true);
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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);
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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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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 tboldname = tb.DbOldName?.Split(new[] { '.' }, 2); //旧表名
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if (tboldname?.Length == 1) tboldname = new[] { "dbo", tboldname[0] };
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var isRenameTable = false;
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var tbname = tb.DbName.Split(new[] { '.' }, 2);
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if (tbname.Length == 1) tbname = new[] { "dbo", tbname[0] };
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if (_orm.Ado.ExecuteScalar(CommandType.Text, string.Format("select 1 from dbo.sysobjects where id = object_id(N'[{0}].[{1}]') and OBJECTPROPERTY(id, N'IsUserTable') = 1", tbname)) == null) { //表不存在
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if (tboldname != null && _orm.Ado.ExecuteScalar(CommandType.Text, string.Format("select 1 from dbo.sysobjects where id = object_id(N'[{0}].[{1}]') and OBJECTPROPERTY(id, N'IsUserTable') = 1", tboldname)) != null) { //旧表存在
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//修改表名
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sb.Append(_commonUtils.FormatSql("EXEC sp_rename {0}, {1};\r\n", _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}"), _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")));
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isRenameTable = true;
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} else {
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//创建表
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sb.Append("CREATE TABLE ").Append(_commonUtils.QuoteSqlName($"{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.ToUpper());
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if (tbcol.Attribute.IsIdentity && tbcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
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if (tbcol.Attribute.IsPrimary) sb.Append(" primary key");
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sb.Append(",");
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}
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sb.Remove(sb.Length - 1, 1).Append("\r\n);\r\n");
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continue;
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}
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}
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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 addcols = new Dictionary<string, ColumnInfo>(StringComparer.CurrentCultureIgnoreCase);
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foreach (var tbcol in tb.Columns) addcols.Add(tbcol.Value.Attribute.Name, tbcol.Value);
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var surplus = new Dictionary<string, bool>(StringComparer.CurrentCultureIgnoreCase);
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var dbcols = new List<DbColumnInfo>();
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var sql = string.Format(@"select
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a.name 'Column'
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,b.name + case
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when b.name in ('Char', 'VarChar', 'NChar', 'NVarChar', 'Binary', 'VarBinary') then '(' +
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case when a.max_length = -1 then 'MAX'
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when b.name in ('NChar', 'NVarchar') then cast(a.max_length / 2 as varchar)
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else cast(a.max_length as varchar) end + ')'
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when b.name in ('Numeric', 'Decimal') then '(' + cast(a.precision as varchar) + ',' + cast(a.scale as varchar) + ')'
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else '' end as 'SqlType'
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,case when a.is_nullable = 1 then '1' else '0' end 'IsNullable'
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,case when a.is_identity = 1 then '1' else '0' end 'IsIdentity'
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from sys.columns a
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inner join sys.types b on b.user_type_id = a.user_type_id
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left join sys.extended_properties AS c ON c.major_id = a.object_id AND c.minor_id = a.column_id
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left join sys.tables d on d.object_id = a.object_id
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left join sys.schemas e on e.schema_id = d.schema_id
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where a.object_id in (object_id(N'[{0}].[{1}]'))", isRenameTable ? tboldname : tbname);
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var ds = _orm.Ado.ExecuteArray(CommandType.Text, sql);
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foreach (var row in ds) {
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string column = string.Concat(row[0]);
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string sqlType = string.Concat(row[1]).ToLower();
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bool is_nullable = string.Concat(row[2]) == "1";
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bool is_identity = string.Concat(row[3]) == "1";
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if (addcols.TryGetValue(column, out var trycol)) {
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if (Regex.Replace(trycol.Attribute.DbType, @"\([^\)]+\)", m => Regex.Replace(m.Groups[0].Value, @"\s", "")).StartsWith(sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
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(trycol.Attribute.DbType.IndexOf("NOT NULL", StringComparison.CurrentCultureIgnoreCase) == -1) != is_nullable ||
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trycol.Attribute.IsIdentity != is_identity) {
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sb.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(column)).Append(" ").Append(trycol.Attribute.DbType.ToUpper());
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if (trycol.Attribute.IsIdentity && trycol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
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sb.Append(";\r\n");
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}
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addcols.Remove(column);
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} else
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surplus.Add(column, true); //记录剩余字段
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}
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foreach (var addcol in addcols.Values) {
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if (string.IsNullOrEmpty(addcol.Attribute.OldName) == false && surplus.ContainsKey(addcol.Attribute.OldName)) { //修改列名
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sb.Append(_commonUtils.FormatSql("EXEC sp_rename {0}, {1}, 'COLUMN';\r\n", $"{tbname[0]}.{tbname[1]}.{addcol.Attribute.OldName}", addcol.Attribute.Name));
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sb.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(addcol.Attribute.Name)).Append(" ").Append(addcol.Attribute.DbType.ToUpper());
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if (addcol.Attribute.IsIdentity && addcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
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sb.Append(";\r\n");
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} else { //添加列
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sb.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ADD ").Append(_commonUtils.QuoteSqlName(addcol.Attribute.Name)).Append(" ").Append(addcol.Attribute.DbType.ToUpper());
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if (addcol.Attribute.IsIdentity && addcol.Attribute.DbType.IndexOf("identity", StringComparison.CurrentCultureIgnoreCase) == -1) sb.Append(" identity(1,1)");
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sb.Append(";\r\n");
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}
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}
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}
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return sb.Length == 0 ? null : sb.ToString();
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}
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Dictionary<string, bool> dicSyced = new Dictionary<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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var ddl = this.GetComparisonDDLStatements(syncTypes);
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if (string.IsNullOrEmpty(ddl)) {
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foreach (var syncType in syncTypes) dicSyced.Add(syncType.FullName, true);
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return true;
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}
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try {
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var affrows = _orm.Ado.ExecuteNonQuery(CommandType.Text, ddl);
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foreach (var syncType in syncTypes) dicSyced.Add(syncType.FullName, true);
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return affrows > 0;
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} catch {
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return false;
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}
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}
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}
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} |