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- 增加 神州通用 ShenTong 实现；#325
This commit is contained in:
28810
412
Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs
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412
Providers/FreeSql.Provider.ShenTong/ShenTongCodeFirst.cs
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@@ -0,0 +1,412 @@
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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;
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using System.Collections.Generic;
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using System.Data;
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using System.Data.OscarClient;
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using System.Linq;
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using System.Net;
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using System.Net.NetworkInformation;
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using System.Text;
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using System.Text.RegularExpressions;
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namespace FreeSql.ShenTong
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{
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class ShenTongCodeFirst : Internal.CommonProvider.CodeFirstProvider
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{
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public ShenTongCodeFirst(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, CsToDb<OscarDbType>> _dicCsToDb = new Dictionary<string, CsToDb<OscarDbType>>() {
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{ typeof(sbyte).FullName, CsToDb.New(OscarDbType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(sbyte?).FullName, CsToDb.New(OscarDbType.SmallInt, "int2", "int2", false, true, null) },
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{ typeof(short).FullName, CsToDb.New(OscarDbType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(short?).FullName, CsToDb.New(OscarDbType.SmallInt, "int2", "int2", false, true, null) },
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{ typeof(int).FullName, CsToDb.New(OscarDbType.Integer, "int4","int4 NOT NULL", false, false, 0) },{ typeof(int?).FullName, CsToDb.New(OscarDbType.Integer, "int4", "int4", false, true, null) },
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{ typeof(long).FullName, CsToDb.New(OscarDbType.BigInt, "int8","int8 NOT NULL", false, false, 0) },{ typeof(long?).FullName, CsToDb.New(OscarDbType.BigInt, "int8", "int8", false, true, null) },
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{ typeof(byte).FullName, CsToDb.New(OscarDbType.SmallInt, "int2","int2 NOT NULL", false, false, 0) },{ typeof(byte?).FullName, CsToDb.New(OscarDbType.SmallInt, "int2", "int2", false, true, null) },
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{ typeof(ushort).FullName, CsToDb.New(OscarDbType.Integer, "int4","int4 NOT NULL", false, false, 0) },{ typeof(ushort?).FullName, CsToDb.New(OscarDbType.Integer, "int4", "int4", false, true, null) },
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{ typeof(uint).FullName, CsToDb.New(OscarDbType.BigInt, "int8","int8 NOT NULL", false, false, 0) },{ typeof(uint?).FullName, CsToDb.New(OscarDbType.BigInt, "int8", "int8", false, true, null) },
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{ typeof(ulong).FullName, CsToDb.New(OscarDbType.Numeric, "numeric","numeric(20,0) NOT NULL", false, false, 0) },{ typeof(ulong?).FullName, CsToDb.New(OscarDbType.Numeric, "numeric", "numeric(20,0)", false, true, null) },
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{ typeof(float).FullName, CsToDb.New(OscarDbType.Real, "float4","float4 NOT NULL", false, false, 0) },{ typeof(float?).FullName, CsToDb.New(OscarDbType.Real, "float4", "float4", false, true, null) },
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{ typeof(double).FullName, CsToDb.New(OscarDbType.Double, "float8","float8 NOT NULL", false, false, 0) },{ typeof(double?).FullName, CsToDb.New(OscarDbType.Double, "float8", "float8", false, true, null) },
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{ typeof(decimal).FullName, CsToDb.New(OscarDbType.Numeric, "numeric", "numeric(10,2) NOT NULL", false, false, 0) },{ typeof(decimal?).FullName, CsToDb.New(OscarDbType.Numeric, "numeric", "numeric(10,2)", false, true, null) },
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{ typeof(string).FullName, CsToDb.New(OscarDbType.VarChar, "varchar", "varchar(255)", false, null, "") },
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{ typeof(TimeSpan).FullName, CsToDb.New(OscarDbType.Time, "time","time NOT NULL", false, false, 0) },{ typeof(TimeSpan?).FullName, CsToDb.New(OscarDbType.Time, "time", "time",false, true, null) },
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{ typeof(DateTime).FullName, CsToDb.New(OscarDbType.TimeStamp, "timestamp", "timestamp NOT NULL", false, false, new DateTime(1970,1,1)) },{ typeof(DateTime?).FullName, CsToDb.New(OscarDbType.TimeStamp, "timestamp", "timestamp", false, true, null) },
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{ typeof(bool).FullName, CsToDb.New(OscarDbType.Boolean, "bool","bool NOT NULL", null, false, false) },{ typeof(bool?).FullName, CsToDb.New(OscarDbType.Boolean, "bool","bool", null, true, null) },
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{ typeof(Byte[]).FullName, CsToDb.New(OscarDbType.Bytea, "bytea", "bytea", false, null, new byte[0]) },
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{ typeof(Guid).FullName, CsToDb.New(OscarDbType.Char, "bpchar", "bpchar(36) NOT NULL", false, false, Guid.Empty) },{ typeof(Guid?).FullName, CsToDb.New(OscarDbType.Char, "bpchar", "bpchar(36)", false, true, null) },
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};
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public override DbInfoResult GetDbInfo(Type type)
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{
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var isarray = type.FullName != "System.Byte[]" && type.IsArray;
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var elementType = isarray ? type.GetElementType() : type;
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var info = GetDbInfoNoneArray(elementType);
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if (info == null) return null;
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if (isarray == false) return new DbInfoResult((int)info.type, info.dbtype, info.dbtypeFull, info.isnullable, info.defaultValue);
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var dbtypefull = Regex.Replace(info.dbtypeFull, $@"{info.dbtype}(\s*\([^\)]+\))?", "$0[]").Replace(" NOT NULL", "");
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return new DbInfoResult((int)(info.type | OscarDbType.Array), $"{info.dbtype}[]", dbtypefull, null, Array.CreateInstance(elementType, 0));
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}
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CsToDb<OscarDbType> GetDbInfoNoneArray(Type type)
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{
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if (_dicCsToDb.TryGetValue(type.FullName, out var trydc)) return trydc;
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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())
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{
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var genericTypes = type.GetGenericArguments();
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if (genericTypes.Length == 1 && genericTypes.First().IsEnum) enumType = genericTypes.First();
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}
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if (enumType != null)
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{
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var newItem = enumType.GetCustomAttributes(typeof(FlagsAttribute), false).Any() ?
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CsToDb.New(OscarDbType.BigInt, "int8", $"int8{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, enumType.CreateInstanceGetDefaultValue()) :
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CsToDb.New(OscarDbType.Integer, "int4", $"int4{(type.IsEnum ? " NOT NULL" : "")}", false, type.IsEnum ? false : true, enumType.CreateInstanceGetDefaultValue());
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if (_dicCsToDb.ContainsKey(type.FullName) == false)
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{
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lock (_dicCsToDbLock)
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{
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if (_dicCsToDb.ContainsKey(type.FullName) == false)
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_dicCsToDb.Add(type.FullName, newItem);
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}
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}
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return newItem;
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}
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return null;
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}
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protected override string GetComparisonDDLStatements(params TypeAndName[] objects)
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{
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var sb = new StringBuilder();
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var seqcols = new List<NaviteTuple<ColumnInfo, string[], bool>>(); //序列
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foreach (var obj in objects)
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{
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if (sb.Length > 0) sb.Append("\r\n");
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var tb = _commonUtils.GetTableByEntity(obj.entityType);
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if (tb == null) throw new Exception($"类型 {obj.entityType.FullName} 不可迁移");
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if (tb.Columns.Any() == false) throw new Exception($"类型 {obj.entityType.FullName} 不可迁移，可迁移属性0个");
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var tbname = _commonUtils.SplitTableName(tb.DbName);
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if (tbname?.Length == 1) tbname = new[] { "PUBLIC", tbname[0] };
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var tboldname = _commonUtils.SplitTableName(tb.DbOldName); //旧表名
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if (tboldname?.Length == 1) tboldname = new[] { "PUBLIC", tboldname[0] };
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if (string.IsNullOrEmpty(obj.tableName) == false)
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{
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var tbtmpname = _commonUtils.SplitTableName(obj.tableName);
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if (tbtmpname?.Length == 1) tbtmpname = new[] { "PUBLIC", tbtmpname[0] };
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if (tbname[0] != tbtmpname[0] || tbname[1] != tbtmpname[1])
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{
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tbname = tbtmpname;
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tboldname = null;
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}
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}
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//codefirst 不支持表名、模式名、数据库名中带 .
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if (string.Compare(tbname[0], "PUBLIC", true) != 0 && _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(" select 1 from sys_namespace where nspname={0}", tbname[0])) == null) //创建模式
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sb.Append("CREATE SCHEMA IF NOT EXISTS ").Append(tbname[0]).Append(";\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 (_orm.Ado.ExecuteScalar(CommandType.Text, string.Format(" select 1 from tables a inner join sys_namespace b on b.nspname = a.table_schem where b.nspname || '.' || a.table_name = '{0}.{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 (_orm.Ado.ExecuteScalar(CommandType.Text, string.Format(" select 1 from tables a inner join sys_namespace b on b.nspname = a.table_schem where b.nspname || '.' || a.table_name = '{0}.{1}'", tboldname)) == null)
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//旧表不存在
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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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var createTableName = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}");
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sb.Append("CREATE TABLE IF NOT EXISTS ").Append(createTableName).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(" ").Append(tbcol.Attribute.DbType).Append(",");
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if (tbcol.Attribute.IsIdentity == true) seqcols.Add(NaviteTuple.Create(tbcol, tbname, true));
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}
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if (tb.Primarys.Any())
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{
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var pkname = $"{tbname[0]}_{tbname[1]}_PKEY";
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sb.Append(" \r\n CONSTRAINT ").Append(_commonUtils.QuoteSqlName(pkname)).Append(" 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.Remove(sb.Length - 1, 1);
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sb.Append("\r\n) BINLOG ON;\r\n");
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//创建表的索引
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foreach (var uk in tb.Indexes)
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{
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sb.Append("CREATE ");
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if (uk.IsUnique) sb.Append("UNIQUE ");
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sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(createTableName).Append("(");
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foreach (var tbcol in uk.Columns)
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{
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sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
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if (tbcol.IsDesc) sb.Append(" DESC");
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sb.Append(", ");
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}
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sb.Remove(sb.Length - 2, 2).Append(");\r\n");
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}
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//备注
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foreach (var tbcol in tb.ColumnsByPosition)
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{
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if (string.IsNullOrEmpty(tbcol.Comment) == false)
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sb.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
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}
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if (string.IsNullOrEmpty(tb.Comment) == false)
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sb.Append("COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment)).Append(";\r\n");
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continue;
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}
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//如果新表，旧表在一个数据库和模式下，直接修改表名
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if (string.Compare(tbname[0], tboldname[0], true) == 0)
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}")).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName($"{tbname[1]}")).Append(";\r\n");
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else
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{
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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.attname,
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t.typname,
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case when a.atttypmod > 0 and a.atttypmod < 32767 then a.atttypmod - 4 else a.attlen end len,
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case when t.typelem > 0 and t.typinput = 'ARRAY_IN' then t2.typname else t.typname end,
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case when a.attnotnull then '0' else '1' end as is_nullable,
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--e.adsrc,
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(select sys_get_expr(adbin, adrelid) from sys_attrdef where adrelid = e.adrelid limit 1) is_identity,
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a.attndims,
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d.description as comment
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from sys_class c
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inner join sys_attribute a on a.attnum > 0 and a.attrelid = c.oid
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inner join sys_type t on t.oid = a.atttypid
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left join sys_type t2 on t2.oid = t.typelem
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left join sys_description d on d.objoid = a.attrelid and d.objsubid = a.attnum
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left join sys_attrdef e on e.adrelid = a.attrelid and e.adnum = a.attnum
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inner join sys_namespace ns on ns.oid = c.relnamespace
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inner join sys_namespace ns2 on ns2.oid = t.typnamespace
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where ns.nspname = {0} and c.relname = {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 attndims = int.Parse(string.Concat(a[6]));
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var type = string.Concat(a[1]);
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var sqlType = string.Concat(a[3]);
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var max_length = long.Parse(string.Concat(a[2]));
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switch (sqlType.ToLower())
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{
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case "bool": case "name": case "bit": case "varbit": case "bpchar": case "varchar": case "bytea": case "text": case "uuid": break;
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default: max_length *= 8; break;
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}
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if (type.StartsWith("_"))
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{
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type = type.Substring(1);
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if (attndims == 0) attndims++;
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}
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if (sqlType.StartsWith("_")) sqlType = sqlType.Substring(1);
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return new
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{
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column = string.Concat(a[0]),
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sqlType = string.Concat(sqlType),
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max_length = long.Parse(string.Concat(a[2])),
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is_nullable = string.Concat(a[4]) == "1",
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is_identity = string.Concat(a[5]).StartsWith(@"NEXTVAL('") && string.Concat(a[5]).EndsWith(@"'::text)"),
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attndims,
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comment = string.Concat(a[7])
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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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foreach (var tbcol in tb.ColumnsByPosition)
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{
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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.StartsWith(tbstructcol.sqlType, StringComparison.CurrentCultureIgnoreCase) == false ||
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tbcol.Attribute.DbType.Contains("[]") != (tbstructcol.attndims > 0))
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TYPE ").Append(tbcol.Attribute.DbType.Split(' ').First()).Append(";\r\n");
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if (tbcol.Attribute.IsNullable != tbstructcol.is_nullable)
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{
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if (tbcol.Attribute.IsNullable != true || tbcol.Attribute.IsNullable == true && tbcol.Attribute.IsPrimary == false)
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{
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if (tbcol.Attribute.IsNullable == false)
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sbalter.Append("UPDATE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" SET ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" = ").Append(tbcol.DbDefaultValue).Append(" WHERE ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" IS NULL;\r\n");
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" ").Append(tbcol.Attribute.IsNullable == true ? "DROP" : "SET").Append(" NOT NULL;\r\n");
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}
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}
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if (tbcol.Attribute.IsIdentity != tbstructcol.is_identity)
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seqcols.Add(NaviteTuple.Create(tbcol, tbname, tbcol.Attribute.IsIdentity == true));
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if (string.Compare(tbstructcol.column, tbcol.Attribute.OldName, true) == 0)
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//修改列名
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sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" RENAME COLUMN ").Append(_commonUtils.QuoteSqlName(tbstructcol.column)).Append(" TO ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(";\r\n");
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if (isCommentChanged)
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sbalter.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
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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($"{tbname[0]}.{tbname[1]}")).Append(" ADD COLUMN ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType.Split(' ').First()).Append(";\r\n");
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sbalter.Append("UPDATE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" SET ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" = ").Append(tbcol.DbDefaultValue).Append(";\r\n");
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if (tbcol.Attribute.IsNullable == false) sbalter.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" ALTER COLUMN ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" SET NOT NULL;\r\n");
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if (tbcol.Attribute.IsIdentity == true) seqcols.Add(NaviteTuple.Create(tbcol, tbname, tbcol.Attribute.IsIdentity == true));
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if (string.IsNullOrEmpty(tbcol.Comment) == false) sbalter.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
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}
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var dsuksql = _commonUtils.FormatSql(@"
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select
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c.attname,
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b.relname,
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--case when sys_index_column_has_property(b.oid, c.attnum, 'desc') = 't' then 1 else 0 end IsDesc,
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0,
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case when indisunique = 't' then 1 else 0 end IsUnique
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from sys_index a
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inner join sys_class b on b.oid = a.indexrelid
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inner join sys_attribute c on c.attnum > 0 and c.attrelid = b.oid
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inner join sys_namespace ns on ns.oid = b.relnamespace
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inner join sys_class d on d.oid = a.indrelid
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where ns.nspname in ({0}) and d.relname in ({1}) and a.indisprimary = 'f'", tboldname ?? tbname);
|
||||
var dsuk = _orm.Ado.ExecuteArray(CommandType.Text, dsuksql).Select(a => new[] { string.Concat(a[0]), string.Concat(a[1]), string.Concat(a[2]), string.Concat(a[3]) });
|
||||
foreach (var uk in tb.Indexes)
|
||||
{
|
||||
if (string.IsNullOrEmpty(uk.Name) || uk.Columns.Any() == false) continue;
|
||||
var dsukfind1 = dsuk.Where(a => string.Compare(a[1], uk.Name, true) == 0).ToArray();
|
||||
if (dsukfind1.Any() == false || dsukfind1.Length != uk.Columns.Length || dsukfind1.Where(a => uk.Columns.Where(b => (a[3] == "1") == uk.IsUnique && string.Compare(b.Column.Attribute.Name, a[0], true) == 0 && (a[2] == "1") == b.IsDesc).Any()).Count() != uk.Columns.Length)
|
||||
{
|
||||
if (dsukfind1.Any()) sbalter.Append("DROP INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(";\r\n");
|
||||
sbalter.Append("CREATE ");
|
||||
if (uk.IsUnique) sbalter.Append("UNIQUE ");
|
||||
sbalter.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append("(");
|
||||
foreach (var tbcol in uk.Columns)
|
||||
{
|
||||
sbalter.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
|
||||
if (tbcol.IsDesc) sbalter.Append(" DESC");
|
||||
sbalter.Append(", ");
|
||||
}
|
||||
sbalter.Remove(sbalter.Length - 2, 2).Append(");\r\n");
|
||||
}
|
||||
}
|
||||
}
|
||||
if (istmpatler == false)
|
||||
{
|
||||
var dbcomment = string.Concat(_orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@" select
|
||||
d.description
|
||||
from sys_class a
|
||||
inner join sys_namespace b on b.oid = a.relnamespace
|
||||
left join sys_description d on d.objoid = a.oid and objsubid = 0
|
||||
where b.nspname not in ('DIRECTORIES', 'INFO_SCHEM', 'REPLICATION', 'STAGENT', 'SYSAUDIT', 'SYSDBA', 'SYSFTSDBA', 'SYSSECURE', 'SYS_GLOBAL_TEMP', 'WMSYS') and a.relkind in ('r') and b.nspname = {0} and a.relname = {1}
|
||||
and b.nspname || '.' || a.relname not in ('PUBLIC.GEOGRAPHY_COLUMNS','PUBLIC.GEOMETRY_COLUMNS','PUBLIC.RASTER_COLUMNS','PUBLIC.RASTER_OVERVIEWS')", tbname[0], tbname[1])));
|
||||
if (dbcomment != (tb.Comment ?? ""))
|
||||
sb.Append("COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment)).Append(";\r\n");
|
||||
|
||||
sb.Append(sbalter);
|
||||
continue;
|
||||
}
|
||||
var oldpk = _orm.Ado.ExecuteScalar(CommandType.Text, _commonUtils.FormatSql(@" select sys_constraint.conname as pk_name from sys_constraint
|
||||
inner join sys_class on sys_constraint.conrelid = sys_class.oid
|
||||
inner join sys_namespace on sys_namespace.oid = sys_class.relnamespace
|
||||
where sys_namespace.nspname={0} and sys_class.relname={1} and sys_constraint.contype='p'
|
||||
", tbname))?.ToString();
|
||||
if (string.IsNullOrEmpty(oldpk) == false)
|
||||
sb.Append("ALTER TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}")).Append(" DROP CONSTRAINT ").Append(oldpk).Append(";\r\n");
|
||||
|
||||
//创建临时表，数据导进临时表，然后删除原表，将临时表改名为原表名
|
||||
var tablename = tboldname == null ? _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}") : _commonUtils.QuoteSqlName($"{tboldname[0]}.{tboldname[1]}");
|
||||
var tmptablename = _commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}");
|
||||
//创建临时表
|
||||
sb.Append("CREATE TABLE IF NOT EXISTS ").Append(tmptablename).Append(" ( ");
|
||||
foreach (var tbcol in tb.ColumnsByPosition)
|
||||
{
|
||||
sb.Append(" \r\n ").Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(" ").Append(tbcol.Attribute.DbType).Append(",");
|
||||
if (tbcol.Attribute.IsIdentity == true) seqcols.Add(NaviteTuple.Create(tbcol, tbname, true));
|
||||
}
|
||||
if (tb.Primarys.Any())
|
||||
{
|
||||
var pkname = $"{tbname[0]}_{tbname[1]}_pkey";
|
||||
sb.Append(" \r\n CONSTRAINT ").Append(_commonUtils.QuoteSqlName(pkname)).Append(" PRIMARY KEY (");
|
||||
foreach (var tbcol in tb.Primarys) sb.Append(_commonUtils.QuoteSqlName(tbcol.Attribute.Name)).Append(", ");
|
||||
sb.Remove(sb.Length - 2, 2).Append("),");
|
||||
}
|
||||
sb.Remove(sb.Length - 1, 1);
|
||||
sb.Append("\r\n) BINLOG ON;\r\n");
|
||||
//备注
|
||||
foreach (var tbcol in tb.ColumnsByPosition)
|
||||
{
|
||||
if (string.IsNullOrEmpty(tbcol.Comment) == false)
|
||||
sb.Append("COMMENT ON COLUMN ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}.{tbcol.Attribute.Name}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tbcol.Comment)).Append(";\r\n");
|
||||
}
|
||||
if (string.IsNullOrEmpty(tb.Comment) == false)
|
||||
sb.Append("COMMENT ON TABLE ").Append(_commonUtils.QuoteSqlName($"{tbname[0]}.FTmp_{tbname[1]}")).Append(" IS ").Append(_commonUtils.FormatSql("{0}", tb.Comment)).Append(";\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 = $"coalesce({insertvalue},{tbcol.DbDefaultValue})";
|
||||
}
|
||||
else if (tbcol.Attribute.IsNullable == false)
|
||||
insertvalue = tbcol.DbDefaultValue;
|
||||
sb.Append(insertvalue).Append(", ");
|
||||
}
|
||||
sb.Remove(sb.Length - 2, 2).Append(" FROM ").Append(tablename).Append(";\r\n");
|
||||
sb.Append("DROP TABLE ").Append(tablename).Append(";\r\n");
|
||||
sb.Append("ALTER TABLE ").Append(tmptablename).Append(" RENAME TO ").Append(_commonUtils.QuoteSqlName(tbname[1])).Append(";\r\n");
|
||||
//创建表的索引
|
||||
foreach (var uk in tb.Indexes)
|
||||
{
|
||||
sb.Append("CREATE ");
|
||||
if (uk.IsUnique) sb.Append("UNIQUE ");
|
||||
sb.Append("INDEX ").Append(_commonUtils.QuoteSqlName(uk.Name)).Append(" ON ").Append(tablename).Append("(");
|
||||
foreach (var tbcol in uk.Columns)
|
||||
{
|
||||
sb.Append(_commonUtils.QuoteSqlName(tbcol.Column.Attribute.Name));
|
||||
if (tbcol.IsDesc) sb.Append(" DESC");
|
||||
sb.Append(", ");
|
||||
}
|
||||
sb.Remove(sb.Length - 2, 2).Append(");\r\n");
|
||||
}
|
||||
}
|
||||
foreach (var seqcol in seqcols)
|
||||
{
|
||||
var tbname = seqcol.Item2;
|
||||
var seqname = Utils.GetCsName($"{tbname[0]}.{tbname[1]}_{seqcol.Item1.Attribute.Name}_seq").ToUpper(); ;
|
||||
var tbname2 = _commonUtils.QuoteSqlName($"{tbname[0]}.{tbname[1]}");
|
||||
var colname2 = _commonUtils.QuoteSqlName(seqcol.Item1.Attribute.Name);
|
||||
sb.Append("ALTER TABLE ").Append(tbname2).Append(" ALTER COLUMN ").Append(colname2).Append(" SET DEFAULT null;\r\n");
|
||||
sb.Append("DROP SEQUENCE IF EXISTS ").Append(seqname).Append(";\r\n");
|
||||
if (seqcol.Item3)
|
||||
{
|
||||
sb.Append("CREATE SEQUENCE ").Append(seqname).Append(";\r\n");
|
||||
sb.Append("ALTER TABLE ").Append(tbname2).Append(" ALTER COLUMN ").Append(colname2).Append(" SET DEFAULT NEXTVAL('").Append(seqname).Append("'::text);\r\n");
|
||||
sb.Append(" SELECT case when max(").Append(colname2).Append(") is null then 0 else setval('").Append(seqname).Append("', max(").Append(colname2).Append(")) end FROM ").Append(tbname2).Append(";\r\n");
|
||||
}
|
||||
}
|
||||
return sb.Length == 0 ? null : sb.ToString();
|
||||
}
|
||||
}
|
||||
}
|
||||
Reference in New Issue
Block a user