opensim-development – Blame information for rev 1
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1 | eva | 1 | /* |
2 | * Copyright (c) Contributors, http://opensimulator.org/ |
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3 | * See CONTRIBUTORS.TXT for a full list of copyright holders. |
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4 | * |
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5 | * Redistribution and use in source and binary forms, with or without |
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6 | * modification, are permitted provided that the following conditions are met: |
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7 | * * Redistributions of source code must retain the above copyright |
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8 | * notice, this list of conditions and the following disclaimer. |
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9 | * * Redistributions in binary form must reproduce the above copyright |
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10 | * notice, this list of conditions and the following disclaimer in the |
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11 | * documentation and/or other materials provided with the distribution. |
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12 | * * Neither the name of the OpenSimulator Project nor the |
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13 | * names of its contributors may be used to endorse or promote products |
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14 | * derived from this software without specific prior written permission. |
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15 | * |
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16 | * THIS SOFTWARE IS PROVIDED BY THE DEVELOPERS ``AS IS'' AND ANY |
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17 | * EXPRESS OR IMPLIED WARRANTIES, INCLUDING, BUT NOT LIMITED TO, THE IMPLIED |
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18 | * WARRANTIES OF MERCHANTABILITY AND FITNESS FOR A PARTICULAR PURPOSE ARE |
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19 | * DISCLAIMED. IN NO EVENT SHALL THE CONTRIBUTORS BE LIABLE FOR ANY |
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20 | * DIRECT, INDIRECT, INCIDENTAL, SPECIAL, EXEMPLARY, OR CONSEQUENTIAL DAMAGES |
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21 | * (INCLUDING, BUT NOT LIMITED TO, PROCUREMENT OF SUBSTITUTE GOODS OR SERVICES; |
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22 | * LOSS OF USE, DATA, OR PROFITS; OR BUSINESS INTERRUPTION) HOWEVER CAUSED AND |
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23 | * ON ANY THEORY OF LIABILITY, WHETHER IN CONTRACT, STRICT LIABILITY, OR TORT |
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24 | * (INCLUDING NEGLIGENCE OR OTHERWISE) ARISING IN ANY WAY OUT OF THE USE OF THIS |
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25 | * SOFTWARE, EVEN IF ADVISED OF THE POSSIBILITY OF SUCH DAMAGE. |
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26 | */ |
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27 | |||
28 | using System; |
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29 | using System.Collections.Generic; |
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30 | using System.Data; |
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31 | using System.Reflection; |
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32 | using log4net; |
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33 | #if CSharpSqlite |
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34 | using Community.CsharpSqlite.Sqlite; |
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35 | #else |
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36 | using Mono.Data.Sqlite; |
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37 | #endif |
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38 | using OpenMetaverse; |
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39 | using OpenSim.Framework; |
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40 | using OpenSim.Region.Framework.Interfaces; |
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41 | |||
42 | namespace OpenSim.Data.SQLite |
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43 | { |
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44 | public class SQLiteGenericTableHandler<T> : SQLiteFramework where T: class, new() |
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45 | { |
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46 | // private static readonly ILog m_log = LogManager.GetLogger(MethodBase.GetCurrentMethod().DeclaringType); |
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47 | |||
48 | protected Dictionary<string, FieldInfo> m_Fields = |
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49 | new Dictionary<string, FieldInfo>(); |
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50 | |||
51 | protected List<string> m_ColumnNames = null; |
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52 | protected string m_Realm; |
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53 | protected FieldInfo m_DataField = null; |
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54 | |||
55 | protected static SqliteConnection m_Connection; |
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56 | private static bool m_initialized; |
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57 | |||
58 | protected virtual Assembly Assembly |
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59 | { |
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60 | get { return GetType().Assembly; } |
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61 | } |
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62 | |||
63 | public SQLiteGenericTableHandler(string connectionString, |
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64 | string realm, string storeName) : base(connectionString) |
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65 | { |
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66 | m_Realm = realm; |
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67 | |||
68 | if (!m_initialized) |
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69 | { |
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70 | m_Connection = new SqliteConnection(connectionString); |
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71 | //Console.WriteLine(string.Format("OPENING CONNECTION FOR {0} USING {1}", storeName, connectionString)); |
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72 | m_Connection.Open(); |
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73 | |||
74 | if (storeName != String.Empty) |
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75 | { |
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76 | //SqliteConnection newConnection = |
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77 | // (SqliteConnection)((ICloneable)m_Connection).Clone(); |
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78 | //newConnection.Open(); |
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79 | |||
80 | //Migration m = new Migration(newConnection, Assembly, storeName); |
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81 | Migration m = new Migration(m_Connection, Assembly, storeName); |
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82 | m.Update(); |
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83 | //newConnection.Close(); |
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84 | //newConnection.Dispose(); |
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85 | } |
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86 | |||
87 | m_initialized = true; |
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88 | } |
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89 | |||
90 | Type t = typeof(T); |
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91 | FieldInfo[] fields = t.GetFields(BindingFlags.Public | |
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92 | BindingFlags.Instance | |
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93 | BindingFlags.DeclaredOnly); |
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94 | |||
95 | if (fields.Length == 0) |
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96 | return; |
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97 | |||
98 | foreach (FieldInfo f in fields) |
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99 | { |
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100 | if (f.Name != "Data") |
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101 | m_Fields[f.Name] = f; |
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102 | else |
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103 | m_DataField = f; |
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104 | } |
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105 | } |
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106 | |||
107 | private void CheckColumnNames(IDataReader reader) |
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108 | { |
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109 | if (m_ColumnNames != null) |
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110 | return; |
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111 | |||
112 | m_ColumnNames = new List<string>(); |
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113 | |||
114 | DataTable schemaTable = reader.GetSchemaTable(); |
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115 | foreach (DataRow row in schemaTable.Rows) |
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116 | { |
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117 | if (row["ColumnName"] != null && |
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118 | (!m_Fields.ContainsKey(row["ColumnName"].ToString()))) |
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119 | m_ColumnNames.Add(row["ColumnName"].ToString()); |
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120 | } |
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121 | } |
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122 | |||
123 | public virtual T[] Get(string field, string key) |
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124 | { |
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125 | return Get(new string[] { field }, new string[] { key }); |
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126 | } |
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127 | |||
128 | public virtual T[] Get(string[] fields, string[] keys) |
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129 | { |
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130 | if (fields.Length != keys.Length) |
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131 | return new T[0]; |
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132 | |||
133 | List<string> terms = new List<string>(); |
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134 | |||
135 | using (SqliteCommand cmd = new SqliteCommand()) |
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136 | { |
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137 | for (int i = 0 ; i < fields.Length ; i++) |
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138 | { |
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139 | cmd.Parameters.Add(new SqliteParameter(":" + fields[i], keys[i])); |
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140 | terms.Add("`" + fields[i] + "` = :" + fields[i]); |
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141 | } |
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142 | |||
143 | string where = String.Join(" and ", terms.ToArray()); |
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144 | |||
145 | string query = String.Format("select * from {0} where {1}", |
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146 | m_Realm, where); |
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147 | |||
148 | cmd.CommandText = query; |
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149 | |||
150 | return DoQuery(cmd); |
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151 | } |
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152 | } |
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153 | |||
154 | protected T[] DoQuery(SqliteCommand cmd) |
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155 | { |
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156 | IDataReader reader = ExecuteReader(cmd, m_Connection); |
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157 | if (reader == null) |
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158 | return new T[0]; |
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159 | |||
160 | CheckColumnNames(reader); |
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161 | |||
162 | List<T> result = new List<T>(); |
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163 | |||
164 | while (reader.Read()) |
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165 | { |
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166 | T row = new T(); |
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167 | |||
168 | foreach (string name in m_Fields.Keys) |
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169 | { |
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170 | if (m_Fields[name].GetValue(row) is bool) |
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171 | { |
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172 | int v = Convert.ToInt32(reader[name]); |
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173 | m_Fields[name].SetValue(row, v != 0 ? true : false); |
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174 | } |
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175 | else if (m_Fields[name].GetValue(row) is UUID) |
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176 | { |
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177 | UUID uuid = UUID.Zero; |
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178 | |||
179 | UUID.TryParse(reader[name].ToString(), out uuid); |
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180 | m_Fields[name].SetValue(row, uuid); |
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181 | } |
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182 | else if (m_Fields[name].GetValue(row) is int) |
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183 | { |
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184 | int v = Convert.ToInt32(reader[name]); |
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185 | m_Fields[name].SetValue(row, v); |
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186 | } |
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187 | else |
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188 | { |
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189 | m_Fields[name].SetValue(row, reader[name]); |
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190 | } |
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191 | } |
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192 | |||
193 | if (m_DataField != null) |
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194 | { |
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195 | Dictionary<string, string> data = |
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196 | new Dictionary<string, string>(); |
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197 | |||
198 | foreach (string col in m_ColumnNames) |
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199 | { |
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200 | data[col] = reader[col].ToString(); |
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201 | if (data[col] == null) |
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202 | data[col] = String.Empty; |
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203 | } |
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204 | |||
205 | m_DataField.SetValue(row, data); |
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206 | } |
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207 | |||
208 | result.Add(row); |
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209 | } |
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210 | |||
211 | //CloseCommand(cmd); |
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212 | |||
213 | return result.ToArray(); |
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214 | } |
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215 | |||
216 | public virtual T[] Get(string where) |
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217 | { |
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218 | using (SqliteCommand cmd = new SqliteCommand()) |
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219 | { |
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220 | string query = String.Format("select * from {0} where {1}", |
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221 | m_Realm, where); |
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222 | |||
223 | cmd.CommandText = query; |
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224 | |||
225 | return DoQuery(cmd); |
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226 | } |
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227 | } |
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228 | |||
229 | public virtual bool Store(T row) |
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230 | { |
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231 | using (SqliteCommand cmd = new SqliteCommand()) |
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232 | { |
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233 | string query = ""; |
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234 | List<String> names = new List<String>(); |
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235 | List<String> values = new List<String>(); |
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236 | |||
237 | foreach (FieldInfo fi in m_Fields.Values) |
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238 | { |
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239 | names.Add(fi.Name); |
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240 | values.Add(":" + fi.Name); |
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241 | cmd.Parameters.Add(new SqliteParameter(":" + fi.Name, fi.GetValue(row).ToString())); |
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242 | } |
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243 | |||
244 | if (m_DataField != null) |
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245 | { |
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246 | Dictionary<string, string> data = |
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247 | (Dictionary<string, string>)m_DataField.GetValue(row); |
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248 | |||
249 | foreach (KeyValuePair<string, string> kvp in data) |
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250 | { |
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251 | names.Add(kvp.Key); |
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252 | values.Add(":" + kvp.Key); |
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253 | cmd.Parameters.Add(new SqliteParameter(":" + kvp.Key, kvp.Value)); |
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254 | } |
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255 | } |
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256 | |||
257 | query = String.Format("replace into {0} (`", m_Realm) + String.Join("`,`", names.ToArray()) + "`) values (" + String.Join(",", values.ToArray()) + ")"; |
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258 | |||
259 | cmd.CommandText = query; |
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260 | |||
261 | if (ExecuteNonQuery(cmd, m_Connection) > 0) |
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262 | return true; |
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263 | } |
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264 | |||
265 | return false; |
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266 | } |
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267 | |||
268 | public virtual bool Delete(string field, string key) |
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269 | { |
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270 | return Delete(new string[] { field }, new string[] { key }); |
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271 | } |
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272 | |||
273 | public virtual bool Delete(string[] fields, string[] keys) |
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274 | { |
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275 | if (fields.Length != keys.Length) |
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276 | return false; |
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277 | |||
278 | List<string> terms = new List<string>(); |
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279 | |||
280 | using (SqliteCommand cmd = new SqliteCommand()) |
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281 | { |
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282 | for (int i = 0 ; i < fields.Length ; i++) |
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283 | { |
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284 | cmd.Parameters.Add(new SqliteParameter(":" + fields[i], keys[i])); |
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285 | terms.Add("`" + fields[i] + "` = :" + fields[i]); |
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286 | } |
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287 | |||
288 | string where = String.Join(" and ", terms.ToArray()); |
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289 | |||
290 | string query = String.Format("delete from {0} where {1}", m_Realm, where); |
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291 | |||
292 | cmd.CommandText = query; |
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293 | |||
294 | return ExecuteNonQuery(cmd, m_Connection) > 0; |
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295 | } |
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296 | } |
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297 | } |
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298 | } |