public virtual void ExistLogic(EntityInfo entityInfo) { if (entityInfo.Columns.HasValue()) { //Check.Exception(entityInfo.Columns.Where(it => it.IsPrimarykey).Count() > 1, "Multiple primary keys do not support modifications"); var tableName = GetTableName(entityInfo); var dbColumns = this.Context.DbMaintenance.GetColumnInfosByTableName(tableName); ConvertColumns(dbColumns); var entityColumns = entityInfo.Columns.Where(it => it.IsIgnore == false).ToList(); var dropColumns = dbColumns .Where(dc => !entityColumns.Any(ec => dc.DbColumnName.Equals(ec.OldDbColumnName, StringComparison.CurrentCultureIgnoreCase))) .Where(dc => !entityColumns.Any(ec => dc.DbColumnName.Equals(ec.DbColumnName, StringComparison.CurrentCultureIgnoreCase))) .ToList(); var addColumns = entityColumns .Where(ec => ec.OldDbColumnName.IsNullOrEmpty() || !dbColumns.Any(dc => dc.DbColumnName.Equals(ec.OldDbColumnName, StringComparison.CurrentCultureIgnoreCase))) .Where(ec => !dbColumns.Any(dc => ec.DbColumnName.Equals(dc.DbColumnName, StringComparison.CurrentCultureIgnoreCase))).ToList(); var alterColumns = entityColumns .Where(ec => !dbColumns.Any(dc => dc.DbColumnName.Equals(ec.OldDbColumnName, StringComparison.CurrentCultureIgnoreCase))) .Where(ec => dbColumns.Any(dc => dc.DbColumnName.Equals(ec.DbColumnName) && ((ec.Length != dc.Length && !UtilMethods.GetUnderType(ec.PropertyInfo).IsEnum() && UtilMethods.GetUnderType(ec.PropertyInfo).IsIn(UtilConstants.StringType)) || ec.IsNullable != dc.IsNullable || IsSamgeType(ec, dc)))).ToList(); var renameColumns = entityColumns .Where(it => !string.IsNullOrEmpty(it.OldDbColumnName)) .Where(entityColumn => dbColumns.Any(dbColumn => entityColumn.OldDbColumnName.Equals(dbColumn.DbColumnName, StringComparison.CurrentCultureIgnoreCase))) .ToList(); var isMultiplePrimaryKey = dbColumns.Where(it => it.IsPrimarykey).Count() > 1 || entityColumns.Where(it => it.IsPrimarykey).Count() > 1; var isChange = false; foreach (var item in addColumns) { this.Context.DbMaintenance.AddColumn(tableName, EntityColumnToDbColumn(entityInfo, tableName, item)); isChange = true; } foreach (var item in dropColumns) { this.Context.DbMaintenance.DropColumn(tableName, item.DbColumnName); isChange = true; } foreach (var item in alterColumns) { this.Context.DbMaintenance.UpdateColumn(tableName, EntityColumnToDbColumn(entityInfo, tableName, item)); isChange = true; } foreach (var item in renameColumns) { this.Context.DbMaintenance.RenameColumn(tableName, item.OldDbColumnName, item.DbColumnName); isChange = true; } foreach (var item in entityColumns) { var dbColumn = dbColumns.FirstOrDefault(dc => dc.DbColumnName.Equals(item.DbColumnName, StringComparison.CurrentCultureIgnoreCase)); if (dbColumn == null) { continue; } bool pkDiff, idEntityDiff; KeyAction(item, dbColumn, out pkDiff, out idEntityDiff); if (dbColumn != null && pkDiff && !idEntityDiff && isMultiplePrimaryKey == false) { var isAdd = item.IsPrimarykey; if (isAdd) { this.Context.DbMaintenance.AddPrimaryKey(tableName, item.DbColumnName); } else { this.Context.DbMaintenance.DropConstraint(tableName, string.Format("PK_{0}_{1}", tableName, item.DbColumnName)); } } else if ((pkDiff || idEntityDiff) && isMultiplePrimaryKey == false) { ChangeKey(entityInfo, tableName, item); } } if (isMultiplePrimaryKey) { var oldPkNames = dbColumns.Where(it => it.IsPrimarykey).Select(it => it.DbColumnName.ToLower()).OrderBy(it => it).ToList(); var newPkNames = entityColumns.Where(it => it.IsPrimarykey).Select(it => it.DbColumnName.ToLower()).OrderBy(it => it).ToList(); if (!Enumerable.SequenceEqual(oldPkNames, newPkNames)) { Check.Exception(true, ErrorMessage.GetThrowMessage("Modification of multiple primary key tables is not supported. Delete tables while creating", "不支持修改多主键表,请删除表在创建")); } } if (isChange && IsBackupTable) { this.Context.DbMaintenance.BackupTable(tableName, tableName + DateTime.Now.ToString("yyyyMMddHHmmss"), MaxBackupDataRows); } } }