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#if MYSQL_6_9
// Copyright © 2004, 2017 Oracle and/or its affiliates. All rights reserved.
//
// MySQL Connector/NET is licensed under the terms of the GPLv2
// <http://www.gnu.org/licenses/old-licenses/gpl-2.0.html>, 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
// <http://www.mysql.com/about/legal/licensing/foss-exception.html>.
//
// 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 Externals.MySql.Data.Types;
using System;
using System.Collections;
using System.Data;
using System.Data.Common;
namespace Externals.MySql.Data.MySqlClient
{
internal sealed partial class MySqlDataReader : DbDataReader, IDataReader, IDataRecord
{
/// <summary>
/// Gets a value indicating the depth of nesting for the current row. This method is not
/// supported currently and always returns 0.
/// </summary>
public override int Depth
{
get { return 0; }
}
public MySqlGeometry GetMySqlGeometry(int i)
{
try
{
IMySqlValue v = GetFieldValue(i, false);
if (v is MySqlGeometry || v is MySqlBinary)
return new MySqlGeometry(MySqlDbType.Geometry, (Byte[])v.Value);
}
catch
{
Throw(new Exception("Can't get MySqlGeometry from value"));
}
return new MySqlGeometry(true);
}
public MySqlGeometry GetMySqlGeometry(string column)
{
return GetMySqlGeometry(GetOrdinal(column));
}
/// <summary>
/// Returns a DataTable that describes the column metadata of the MySqlDataReader.
/// </summary>
/// <returns></returns>
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;
}
/// <summary>
/// Returns an <see cref="IEnumerator"/> that iterates through the <see cref="MySqlDataReader"/>.
/// </summary>
/// <returns></returns>
public override IEnumerator GetEnumerator()
{
return new DbEnumerator(this, (commandBehavior & CommandBehavior.CloseConnection) != 0);
}
}
}
#endif