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//
// System.Data.Common.DbDataRecord.cs
//
// Author:
// Tim Coleman (tim@timcoleman.com)
//
// Copyright (C) Tim Coleman, 2002-2003
//
//
// 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;
using System.Runtime.CompilerServices;
namespace System.Data.Common
{
public abstract class DbDataRecord : IDataRecord
{
protected DbDataRecord ()
{
}
public abstract int FieldCount { get; }
public abstract object this [string name] { get; }
public abstract object this [int i] { get; }
public abstract bool GetBoolean (int i);
public abstract byte GetByte (int i);
public abstract long GetBytes (int i, long dataIndex, byte [] buffer, int bufferIndex,int length);
public abstract char GetChar (int i);
public abstract long GetChars (int i, long dataIndex, char [] buffer, int bufferIndex, int length);
public abstract string GetDataTypeName (int i);
public abstract DateTime GetDateTime (int i);
public abstract decimal GetDecimal (int i);
public abstract double GetDouble (int i);
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);
public abstract string GetString (int i);
public abstract object GetValue (int i);
public abstract int GetValues (object [] values);
public abstract bool IsDBNull (int i);
public IDataReader GetData (int i)
{
return (IDataReader) GetValue (i);
}
}
class DbDataRecordImpl : DbDataRecord
{
#region Fields
readonly SchemaInfo [] schema;
readonly object [] values;
readonly int fieldCount;
#endregion
#region Constructors
// FIXME: this class should actually be reimplemented to be one
// of the derived classes of DbDataRecord, which should become
// almost abstract.
internal DbDataRecordImpl (SchemaInfo[] schema, object[] values)
{
this.schema = schema;
this.values = values;
this.fieldCount = values.Length;
}
#endregion
#region Properties
public override int FieldCount {
get { return fieldCount; }
}
public override object this [string name] {
get { return this [GetOrdinal (name)]; }
}
public override object this [int i] {
get { return GetValue (i); }
}
#endregion
#region Methods
public override bool GetBoolean (int i)
{
return (bool) GetValue (i);
}
public override byte GetByte (int i)
{
return (byte) GetValue (i);
}
public override long GetBytes (int i, long dataIndex, byte[] buffer, int bufferIndex, int length)
{
object value = GetValue (i);
if (!(value is byte []))
throw new InvalidCastException ("Type is " + value.GetType ().ToString ());
if ( buffer == null ) {
// Return length of data
return ((byte []) value).Length;
} else {
// Copy data into buffer
Array.Copy ((byte []) value, (int) dataIndex, buffer, bufferIndex, length);
return ((byte []) value).Length - dataIndex;
}
}
public override char GetChar (int i)
{
return (char) GetValue (i);
}
public override long GetChars (int i, long dataIndex, char[] buffer, int bufferIndex, int length)
{
object value = GetValue (i);
char [] valueBuffer;
if (value is char[])
valueBuffer = (char []) value;
else if (value is string)
valueBuffer = ((string) value).ToCharArray ();
else
throw new InvalidCastException ("Type is " + value.GetType ().ToString ());
if (buffer == null) {
// Return length of data
return valueBuffer.Length;
} else {
// Copy data into buffer
Array.Copy (valueBuffer, (int) dataIndex, buffer, bufferIndex, length);
return valueBuffer.Length - dataIndex;
}
}
public override string GetDataTypeName (int i)
{
return schema[i].DataTypeName;
}
public override DateTime GetDateTime (int i)
{
return (DateTime) GetValue (i);
}
public override decimal GetDecimal (int i)
{
return (decimal) GetValue (i);
}
public override double GetDouble (int i)
{
return (double) GetValue (i);
}
public override Type GetFieldType (int i)
{
return schema[i].FieldType;
}
public override float GetFloat (int i)
{
return (float) GetValue (i);
}
public override Guid GetGuid (int i)
{
return (Guid) GetValue (i);
}
public override short GetInt16 (int i)
{
return (short) GetValue (i);
}
public override int GetInt32 (int i)
{
return (int) GetValue (i);
}
public override long GetInt64 (int i)
{
return (long) GetValue (i);
}
public override string GetName (int i)
{
return schema [i].ColumnName;
}
public override int GetOrdinal (string name)
{
for (int i = 0; i < FieldCount; i++)
if (schema [i].ColumnName == name)
return i;
return -1;
}
public override string GetString (int i)
{
return (string) GetValue (i);
}
public override object GetValue (int i)
{
if (i < 0 || i > fieldCount)
throw new IndexOutOfRangeException ();
return values [i];
}
public override int GetValues (object[] values)
{
if (values == null)
throw new ArgumentNullException("values");
int count = values.Length > this.values.Length ? this.values.Length : values.Length;
for(int i = 0; i < count; i++)
values [i] = this.values [i];
return count;
}
public override bool IsDBNull (int i)
{
return GetValue (i) == DBNull.Value;
}
#endregion // Methods
}
}