wasCSharpSQLite – Rev 1
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//
// System.Data.Common.DbDataReader.cs
//
// Author:
// Tim Coleman (tim@timcoleman.com)
//
// Copyright (C) Tim Coleman, 2003
//
//
// Copyright (C) 2004 Novell, Inc (http://www.novell.com)
//
// Permission is hereby granted, free of charge, to any person obtaining
// a copy of this software and associated documentation files (the
// "Software"), to deal in the Software without restriction, including
// without limitation the rights to use, copy, modify, merge, publish,
// distribute, sublicense, and/or sell copies of the Software, and to
// permit persons to whom the Software is furnished to do so, subject to
// the following conditions:
//
// The above copyright notice and this permission notice shall be
// included in all copies or substantial portions of the Software.
//
// THE SOFTWARE IS PROVIDED "AS IS", WITHOUT WARRANTY OF ANY KIND,
// EXPRESS OR IMPLIED, INCLUDING BUT NOT LIMITED TO THE WARRANTIES OF
// MERCHANTABILITY, FITNESS FOR A PARTICULAR PURPOSE AND
// NONINFRINGEMENT. IN NO EVENT SHALL THE AUTHORS OR COPYRIGHT HOLDERS BE
// LIABLE FOR ANY CLAIM, DAMAGES OR OTHER LIABILITY, WHETHER IN AN ACTION
// OF CONTRACT, TORT OR OTHERWISE, ARISING FROM, OUT OF OR IN CONNECTION
// WITH THE SOFTWARE OR THE USE OR OTHER DEALINGS IN THE SOFTWARE.
//
using System.Collections;
using System.ComponentModel;
using System.Data;
namespace System.Data.Common {
public abstract class DbDataReader : IDataReader, IDataRecord, IDisposable, IEnumerable
{
#region Constructors
protected DbDataReader ()
{
}
#endregion // Constructors
#region Properties
public abstract int Depth { get; }
public abstract int FieldCount { get; }
public abstract bool HasRows { get; }
public abstract bool IsClosed { get; }
public abstract object this [int index] { get; }
public abstract object this [string name] { get; }
public abstract int RecordsAffected { get; }
public virtual int VisibleFieldCount {
get { return FieldCount; }
}
#endregion // Properties
#region Methods
public abstract void Close ();
public abstract bool GetBoolean (int i);
public abstract byte GetByte (int i);
public abstract long GetBytes (int i, long fieldOffset, byte[] buffer, int bufferOffset, int length);
public abstract char GetChar (int i);
public abstract long GetChars (int i, long dataIndex, char[] buffer, int bufferIndex, int length);
[EditorBrowsable (EditorBrowsableState.Never)]
public void Dispose ()
{
Dispose (true);
}
protected virtual void Dispose (bool disposing)
{
if (disposing)
Close ();
}
[EditorBrowsable (EditorBrowsableState.Never)]
public DbDataReader GetData (int i)
{
return ((DbDataReader) this [i]);
}
public abstract string GetDataTypeName (int i);
public abstract DateTime GetDateTime (int i);
public abstract decimal GetDecimal (int i);
public abstract double GetDouble (int i);
[EditorBrowsable (EditorBrowsableState.Never)]
public abstract IEnumerator GetEnumerator ();
public abstract Type GetFieldType (int i);
public abstract float GetFloat (int i);
public abstract Guid GetGuid (int i);
public abstract short GetInt16 (int i);
public abstract int GetInt32 (int i);
public abstract long GetInt64 (int i);
public abstract string GetName (int i);
public abstract int GetOrdinal (string name);
[EditorBrowsable (EditorBrowsableState.Never)]
public virtual Type GetProviderSpecificFieldType (int i)
{
return GetFieldType (i);
}
[EditorBrowsable (EditorBrowsableState.Never)]
public virtual object GetProviderSpecificValue (int i)
{
return GetValue (i);
}
[EditorBrowsable (EditorBrowsableState.Never)]
public virtual int GetProviderSpecificValues (object[] values)
{
return GetValues (values);
}
protected virtual DbDataReader GetDbDataReader (int ordinal)
{
return ((DbDataReader) this [ordinal]);
}
//public abstract DataTable GetSchemaTable ();
public abstract string GetString (int i);
public abstract object GetValue (int i);
public abstract int GetValues (object[] values);
IDataReader IDataRecord.GetData (int i)
{
return ((IDataReader) this).GetData (i);
}
public abstract bool IsDBNull (int i);
public abstract bool NextResult ();
public abstract bool Read ();
// internal static DataTable GetSchemaTableTemplate ()
//{
// Type booleanType = typeof (bool);
// Type stringType = typeof (string);
// Type intType = typeof (int);
// Type typeType = typeof (Type);
// Type shortType = typeof (short);
// DataTable schemaTable = new DataTable ("SchemaTable");
// schemaTable.Columns.Add ("ColumnName", stringType);
// schemaTable.Columns.Add ("ColumnOrdinal", intType);
// schemaTable.Columns.Add ("ColumnSize", intType);
// schemaTable.Columns.Add ("NumericPrecision", shortType);
// schemaTable.Columns.Add ("NumericScale", shortType);
// schemaTable.Columns.Add ("IsUnique", booleanType);
// schemaTable.Columns.Add ("IsKey", booleanType);
// schemaTable.Columns.Add ("BaseServerName", stringType);
// schemaTable.Columns.Add ("BaseCatalogName", stringType);
// schemaTable.Columns.Add ("BaseColumnName", stringType);
// schemaTable.Columns.Add ("BaseSchemaName", stringType);
// schemaTable.Columns.Add ("BaseTableName", stringType);
// schemaTable.Columns.Add ("DataType", typeType);
// schemaTable.Columns.Add ("AllowDBNull", booleanType);
// schemaTable.Columns.Add ("ProviderType", intType);
// schemaTable.Columns.Add ("IsAliased", booleanType);
// schemaTable.Columns.Add ("IsExpression", booleanType);
// schemaTable.Columns.Add ("IsIdentity", booleanType);
// schemaTable.Columns.Add ("IsAutoIncrement", booleanType);
// schemaTable.Columns.Add ("IsRowVersion", booleanType);
// schemaTable.Columns.Add ("IsHidden", booleanType);
// schemaTable.Columns.Add ("IsLong", booleanType);
// schemaTable.Columns.Add ("IsReadOnly", booleanType);
// return schemaTable;
//}
#endregion // Methods
}
}