127 lines
3.8 KiB
C#
127 lines
3.8 KiB
C#
/*
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* Copyright (c) Tribal Media AB, http://tribalmedia.se/
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*
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* Redistribution and use in source and binary forms, with or without
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* modification, are permitted provided that the following conditions are met:
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* * Redistributions of source code must retain the above copyright
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* notice, this list of conditions and the following disclaimer.
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* * Redistributions in binary form must reproduce the above copyright
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* notice, this list of conditions and the following disclaimer in the
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* documentation and/or other materials provided with the distribution.
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* * The name of Tribal Media AB may not be used to endorse or promote products
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* derived from this software without specific prior written permission.
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*
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* THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY
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* EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED
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* WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE
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* DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY
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* DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES
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* (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES;
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* LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND
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* ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT
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* (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS
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* SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE.
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*
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*/
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using System;
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using System.Data;
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using System.IO;
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namespace TribalMedia.Framework.Data
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{
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public class DataReader
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{
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private readonly IDataReader m_source;
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public DataReader(IDataReader source)
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{
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m_source = source;
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}
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public object Get(string name)
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{
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return m_source[name];
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}
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public ushort GetUShort(string name)
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{
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return (ushort) m_source.GetInt32(m_source.GetOrdinal(name));
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}
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public byte GetByte(string name)
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{
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int ordinal = m_source.GetOrdinal(name);
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byte value = (byte) m_source.GetInt16(ordinal);
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return value;
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}
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public sbyte GetSByte(string name)
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{
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return (sbyte) m_source.GetInt16(m_source.GetOrdinal(name));
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}
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public float GetFloat(string name)
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{
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return m_source.GetFloat(m_source.GetOrdinal(name));
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}
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public byte[] GetBytes(string name)
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{
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int ordinal = m_source.GetOrdinal(name);
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if (m_source.GetValue(ordinal) == DBNull.Value)
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{
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return null;
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}
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byte[] buffer = new byte[16384];
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MemoryStream memStream = new MemoryStream();
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long totalRead = 0;
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int bytesRead;
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do
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{
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bytesRead = (int) m_source.GetBytes(ordinal, totalRead, buffer, 0, buffer.Length);
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totalRead += bytesRead;
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memStream.Write(buffer, 0, bytesRead);
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} while (bytesRead == buffer.Length);
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return memStream.ToArray();
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}
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public string GetString(string name)
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{
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int ordinal = m_source.GetOrdinal(name);
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object value = m_source.GetValue(ordinal);
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if (value is DBNull)
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{
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return null;
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}
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return (string) value;
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}
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public bool Read()
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{
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return m_source.Read();
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}
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public Guid GetGuid(string name)
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{
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string guidString = GetString(name);
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if (String.IsNullOrEmpty(guidString))
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{
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return Guid.Empty;
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}
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else
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{
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return new Guid(guidString);
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}
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}
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}
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} |