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/*
* Copyright (c) Contributors, http://opensimulator.org/
* See CONTRIBUTORS.TXT for a full list of copyright holders.
*
* Redistribution and use in source and binary forms, with or without
* modification, are permitted provided that the following conditions are met:
* * Redistributions of source code must retain the above copyright
* notice, this list of conditions and the following disclaimer.
* * Redistributions in binary form must reproduce the above copyright
* notice, this list of conditions and the following disclaimer in the
* documentation and/or other materials provided with the distribution.
* * Neither the name of the OpenSim Project nor the
* names of its contributors may be used to endorse or promote products
* derived from this software without specific prior written permission.
*
* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
*/
using System;
using System.Data;
using System.IO;
namespace OpenSim.Data.Base
{
public abstract class BaseDataReader
{
private readonly IDataReader m_source;
public BaseDataReader(IDataReader source)
{
m_source = source;
}
public object Get(string name)
{
return m_source[name];
}
public ushort GetUShort(string name)
{
return (ushort)m_source.GetInt32(m_source.GetOrdinal(name));
}
public byte GetByte(string name)
{
int ordinal = m_source.GetOrdinal(name);
byte value = (byte)m_source.GetInt16(ordinal);
return value;
}
public sbyte GetSByte(string name)
{
return (sbyte)m_source.GetInt16(m_source.GetOrdinal(name));
}
public float GetFloat(string name)
{
return m_source.GetFloat(m_source.GetOrdinal(name));
}
public byte[] GetBytes(string name)
{
int ordinal = m_source.GetOrdinal(name);
if (m_source.GetValue(ordinal) == DBNull.Value)
{
return null;
}
byte[] buffer = new byte[16384];
MemoryStream memStream = new MemoryStream();
long totalRead = 0;
int bytesRead;
do
{
bytesRead = (int)m_source.GetBytes(ordinal, totalRead, buffer, 0, buffer.Length);
totalRead += bytesRead;
memStream.Write(buffer, 0, bytesRead);
} while (bytesRead == buffer.Length);
return memStream.ToArray();
}
public string GetString(string name)
{
int ordinal = m_source.GetOrdinal(name);
object value = m_source.GetValue(ordinal);
if (value is DBNull)
{
return null;
}
return (string)value;
}
public bool Read()
{
return m_source.Read();
}
public virtual Guid GetGuid(string name)
{
return m_source.GetGuid(m_source.GetOrdinal(name));
}
public UInt32 GetUInt32(string name )
{
return (UInt32)GetInt32(name);
}
private Int32 GetInt32(string name)
{
int ordinal = m_source.GetOrdinal(name);
int int32 = m_source.GetInt32(ordinal);
return int32;
}
public Int64 GetInt64(string name)
{
int ordinal = m_source.GetOrdinal( name );
long int64 = m_source.GetInt64(ordinal);
return int64;
}
}
}
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