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
128
129
130
131
132
133
134
135
136
137
138
139
140
141
142
143
144
145
146
147
148
149
150
151
152
153
154
155
156
157
158
159
160
161
162
|
using System;
using System.Data;
using System.Data.SQLite;
using System.IO;
using System.Threading.Tasks;
using MediaBrowser.Model.Logging;
namespace MediaBrowser.Server.Implementations.Persistence
{
/// <summary>
/// Class SQLiteExtensions
/// </summary>
static class SqliteExtensions
{
/// <summary>
/// Adds the param.
/// </summary>
/// <param name="cmd">The CMD.</param>
/// <param name="param">The param.</param>
/// <returns>SQLiteParameter.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public static SQLiteParameter AddParam(this SQLiteCommand cmd, string param)
{
if (string.IsNullOrEmpty(param))
{
throw new ArgumentNullException();
}
var sqliteParam = new SQLiteParameter(param);
cmd.Parameters.Add(sqliteParam);
return sqliteParam;
}
/// <summary>
/// Adds the param.
/// </summary>
/// <param name="cmd">The CMD.</param>
/// <param name="param">The param.</param>
/// <param name="data">The data.</param>
/// <returns>SQLiteParameter.</returns>
/// <exception cref="System.ArgumentNullException"></exception>
public static SQLiteParameter AddParam(this SQLiteCommand cmd, string param, object data)
{
if (string.IsNullOrEmpty(param))
{
throw new ArgumentNullException();
}
var sqliteParam = AddParam(cmd, param);
sqliteParam.Value = data;
return sqliteParam;
}
/// <summary>
/// Determines whether the specified conn is open.
/// </summary>
/// <param name="conn">The conn.</param>
/// <returns><c>true</c> if the specified conn is open; otherwise, <c>false</c>.</returns>
public static bool IsOpen(this SQLiteConnection conn)
{
return conn.State == ConnectionState.Open;
}
/// <summary>
/// Gets a stream from a DataReader at a given ordinal
/// </summary>
/// <param name="reader">The reader.</param>
/// <param name="ordinal">The ordinal.</param>
/// <returns>Stream.</returns>
/// <exception cref="System.ArgumentNullException">reader</exception>
public static Stream GetMemoryStream(this IDataReader reader, int ordinal)
{
if (reader == null)
{
throw new ArgumentNullException("reader");
}
var memoryStream = new MemoryStream();
var num = 0L;
var array = new byte[4096];
long bytes;
do
{
bytes = reader.GetBytes(ordinal, num, array, 0, array.Length);
memoryStream.Write(array, 0, (int)bytes);
num += bytes;
}
while (bytes > 0L);
memoryStream.Position = 0;
return memoryStream;
}
/// <summary>
/// Runs the queries.
/// </summary>
/// <param name="connection">The connection.</param>
/// <param name="queries">The queries.</param>
/// <param name="logger">The logger.</param>
/// <returns><c>true</c> if XXXX, <c>false</c> otherwise</returns>
/// <exception cref="System.ArgumentNullException">queries</exception>
public static void RunQueries(this IDbConnection connection, string[] queries, ILogger logger)
{
if (queries == null)
{
throw new ArgumentNullException("queries");
}
using (var tran = connection.BeginTransaction())
{
try
{
using (var cmd = connection.CreateCommand())
{
foreach (var query in queries)
{
cmd.Transaction = tran;
cmd.CommandText = query;
cmd.ExecuteNonQuery();
}
}
tran.Commit();
}
catch (Exception e)
{
logger.ErrorException("Error running queries", e);
tran.Rollback();
throw;
}
}
}
/// <summary>
/// Connects to db.
/// </summary>
/// <param name="dbPath">The db path.</param>
/// <returns>Task{IDbConnection}.</returns>
/// <exception cref="System.ArgumentNullException">dbPath</exception>
public static async Task<SQLiteConnection> ConnectToDb(string dbPath)
{
if (string.IsNullOrEmpty(dbPath))
{
throw new ArgumentNullException("dbPath");
}
var connectionstr = new SQLiteConnectionStringBuilder
{
PageSize = 4096,
CacheSize = 4096,
SyncMode = SynchronizationModes.Off,
DataSource = dbPath,
JournalMode = SQLiteJournalModeEnum.Wal
};
var connection = new SQLiteConnection(connectionstr.ConnectionString);
await connection.OpenAsync().ConfigureAwait(false);
return connection;
}
}
}
|
