#if MYSQL_6_10 // Copyright © 2004, 2018, Oracle and/or its affiliates. All rights reserved. // // MySQL Connector/NET is licensed under the terms of the GPLv2 // , like most // MySQL Connectors. There are special exceptions to the terms and // conditions of the GPLv2 as it is applied to this software, see the // FLOSS License Exception // . // // This program is free software; you can redistribute it and/or modify // it under the terms of the GNU General Public License as published // by the Free Software Foundation; version 2 of the License. // // This program is distributed in the hope that it will be useful, but // WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTABILITY // or FITNESS FOR A PARTICULAR PURPOSE. See the GNU General Public License // for more details. // // You should have received a copy of the GNU General Public License along // with this program; if not, write to the Free Software Foundation, Inc., // 51 Franklin St, Fifth Floor, Boston, MA 02110-1301 USA using System; using System.Collections; using System.Data.Common; using Externals.MySql.Data.Types; using System.Data; namespace Externals.MySql.Data.MySqlClient { internal sealed partial class MySqlDataReader : DbDataReader, IDataReader, IDataRecord { /// /// Returns a DataTable that describes the column metadata of the MySqlDataReader. /// /// public override DataTable GetSchemaTable() { // Only Results from SQL SELECT Queries // get a DataTable for schema of the result // otherwise, DataTable is null reference if (FieldCount == 0) return null; DataTable dataTableSchema = new DataTable("SchemaTable"); dataTableSchema.Columns.Add("ColumnName", typeof(string)); dataTableSchema.Columns.Add("ColumnOrdinal", typeof(int)); dataTableSchema.Columns.Add("ColumnSize", typeof(int)); dataTableSchema.Columns.Add("NumericPrecision", typeof(int)); dataTableSchema.Columns.Add("NumericScale", typeof(int)); dataTableSchema.Columns.Add("IsUnique", typeof(bool)); dataTableSchema.Columns.Add("IsKey", typeof(bool)); DataColumn dc = dataTableSchema.Columns["IsKey"]; dc.AllowDBNull = true; // IsKey can have a DBNull dataTableSchema.Columns.Add("BaseCatalogName", typeof(string)); dataTableSchema.Columns.Add("BaseColumnName", typeof(string)); dataTableSchema.Columns.Add("BaseSchemaName", typeof(string)); dataTableSchema.Columns.Add("BaseTableName", typeof(string)); dataTableSchema.Columns.Add("DataType", typeof(Type)); dataTableSchema.Columns.Add("AllowDBNull", typeof(bool)); dataTableSchema.Columns.Add("ProviderType", typeof(int)); dataTableSchema.Columns.Add("IsAliased", typeof(bool)); dataTableSchema.Columns.Add("IsExpression", typeof(bool)); dataTableSchema.Columns.Add("IsIdentity", typeof(bool)); dataTableSchema.Columns.Add("IsAutoIncrement", typeof(bool)); dataTableSchema.Columns.Add("IsRowVersion", typeof(bool)); dataTableSchema.Columns.Add("IsHidden", typeof(bool)); dataTableSchema.Columns.Add("IsLong", typeof(bool)); dataTableSchema.Columns.Add("IsReadOnly", typeof(bool)); int ord = 1; for (int i = 0; i < FieldCount; i++) { MySqlField f = ResultSet.Fields[i]; DataRow r = dataTableSchema.NewRow(); r["ColumnName"] = f.ColumnName; r["ColumnOrdinal"] = ord++; r["ColumnSize"] = f.IsTextField ? f.ColumnLength / f.MaxLength : f.ColumnLength; int prec = f.Precision; int pscale = f.Scale; if (prec != -1) r["NumericPrecision"] = (short)prec; if (pscale != -1) r["NumericScale"] = (short)pscale; r["DataType"] = GetFieldType(i); r["ProviderType"] = (int)f.Type; r["IsLong"] = f.IsBlob && (f.ColumnLength > 255 || f.ColumnLength == -1); r["AllowDBNull"] = f.AllowsNull; r["IsReadOnly"] = false; r["IsRowVersion"] = false; r["IsUnique"] = false; r["IsKey"] = f.IsPrimaryKey; r["IsAutoIncrement"] = f.IsAutoIncrement; r["BaseSchemaName"] = f.DatabaseName; r["BaseCatalogName"] = null; r["BaseTableName"] = f.RealTableName; r["BaseColumnName"] = f.OriginalColumnName; dataTableSchema.Rows.Add(r); } return dataTableSchema; } } } #endif