1
2
3
4
5
6
7
8
9
10
11
12
13
14
15
16
17
18
19
20
21
22
23
24
25
26
27
28
29
30
31
32
33
34
35
36
37
38
39
40
41
42
43
44
45
46
47
48
49
50
51
52
53
54
55
56
57
58
59
60
61
62
63
64
65
66
67
68
69
70
71
72
73
74
75
76
77
78
79
80
81
82
83
84
85
86
87
88
89
90
91
92
93
94
95
96
97
98
99
100
101
102
103
104
105
106
107
108
109
110
111
112
113
114
115
116
117
118
119
120
121
122
123
124
125
126
127
|
/*
* Copyright (c) Tribal Media AB, http://tribalmedia.se/
*
* 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.
* * The name of Tribal Media AB may not 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 TribalMedia.Framework.Data
{
public class DataReader
{
private readonly IDataReader m_source;
public DataReader(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 Guid GetGuid(string name)
{
string guidString = GetString(name);
if (String.IsNullOrEmpty(guidString))
{
return Guid.Empty;
}
else
{
return new Guid(guidString);
}
}
}
}
|
