1 /********************************************************
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2 * ADO.NET 2.0 Data Provider for SQLite Version 3.X
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3 * Written by Robert Simpson (robert@blackcastlesoft.com)
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5 * Released to the public domain, use at your own risk!
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6 ********************************************************/
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8 namespace System.Data.SQLite
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12 using System.Data.Common;
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13 using System.Collections.Generic;
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14 using System.Globalization;
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15 using System.ComponentModel;
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17 using System.Runtime.InteropServices;
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21 /// SQLite implentation of DbConnection.
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24 /// The <see cref="ConnectionString">ConnectionString</see> property of the SQLiteConnection class can contain the following parameter(s), delimited with a semi-colon:
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25 /// <list type="table">
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27 /// <term>Parameter</term>
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28 /// <term>Values</term>
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29 /// <term>Required</term>
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30 /// <term>Default</term>
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33 /// <description>Data Source</description>
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34 /// <description>{filename}</description>
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35 /// <description>Y</description>
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36 /// <description></description>
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39 /// <description>Version</description>
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40 /// <description>3</description>
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41 /// <description>N</description>
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42 /// <description>3</description>
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45 /// <description>UseUTF16Encoding</description>
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46 /// <description><b>True</b><br/><b>False</b></description>
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47 /// <description>N</description>
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48 /// <description>False</description>
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51 /// <description>DateTimeFormat</description>
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52 /// <description><b>Ticks</b> - Use DateTime.Ticks<br/><b>ISO8601</b> - Use ISO8601 DateTime format</description>
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53 /// <description>N</description>
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54 /// <description>ISO8601</description>
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57 /// <description>BinaryGUID</description>
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58 /// <description><b>True</b> - Store GUID columns in binary form<br/><b>False</b> - Store GUID columns as text</description>
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59 /// <description>N</description>
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60 /// <description>True</description>
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63 /// <description>Cache Size</description>
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64 /// <description>{size in bytes}</description>
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65 /// <description>N</description>
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66 /// <description>2000</description>
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69 /// <description>Synchronous</description>
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70 /// <description><b>Normal</b> - Normal file flushing behavior<br/><b>Full</b> - Full flushing after all writes<br/><b>Off</b> - Underlying OS flushes I/O's</description>
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71 /// <description>N</description>
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72 /// <description>Normal</description>
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75 /// <description>Page Size</description>
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76 /// <description>{size in bytes}</description>
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77 /// <description>N</description>
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78 /// <description>1024</description>
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81 /// <description>Password</description>
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82 /// <description>{password}</description>
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83 /// <description>N</description>
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84 /// <description></description>
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87 /// <description>Enlist</description>
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88 /// <description><b>Y</b> - Automatically enlist in distributed transactions<br/><b>N</b> - No automatic enlistment</description>
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89 /// <description>N</description>
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90 /// <description>Y</description>
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93 /// <description>Pooling</description>
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94 /// <description><b>True</b> - Use connection pooling<br/><b>False</b> - Do not use connection pooling</description>
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95 /// <description>N</description>
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96 /// <description>False</description>
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99 /// <description>FailIfMissing</description>
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100 /// <description><b>True</b> - Don't create the database if it does not exist, throw an error instead<br/><b>False</b> - Automatically create the database if it does not exist</description>
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101 /// <description>N</description>
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102 /// <description>False</description>
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105 /// <description>Max Page Count</description>
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106 /// <description>{size in pages} - Limits the maximum number of pages (limits the size) of the database</description>
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107 /// <description>N</description>
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108 /// <description>0</description>
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111 /// <description>Legacy Format</description>
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112 /// <description><b>True</b> - Use the more compatible legacy 3.x database format<br/><b>False</b> - Use the newer 3.3x database format which compresses numbers more effectively</description>
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113 /// <description>N</description>
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114 /// <description>False</description>
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117 /// <description>Default Timeout</description>
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118 /// <description>{time in seconds}<br/>The default command timeout</description>
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119 /// <description>N</description>
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120 /// <description>30</description>
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123 /// <description>Journal Mode</description>
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124 /// <description><b>Delete</b> - Delete the journal file after a commit<br/><b>Persist</b> - Zero out and leave the journal file on disk after a commit<br/><b>Off</b> - Disable the rollback journal entirely</description>
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125 /// <description>N</description>
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126 /// <description>Delete</description>
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129 /// <description>Read Only</description>
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130 /// <description><b>True</b> - Open the database for read only access<br/><b>False</b> - Open the database for normal read/write access</description>
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131 /// <description>N</description>
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132 /// <description>False</description>
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135 /// <description>Max Pool Size</description>
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136 /// <description>The maximum number of connections for the given connection string that can be in the connection pool</description>
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137 /// <description>N</description>
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138 /// <description>100</description>
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141 /// <description>Default IsolationLevel</description>
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142 /// <description>The default transaciton isolation level</description>
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143 /// <description>N</description>
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144 /// <description>Serializable</description>
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148 public sealed partial class SQLiteConnection : DbConnection, ICloneable
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150 private const string _dataDirectory = "|DataDirectory|";
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151 private const string _masterdb = "sqlite_master";
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152 private const string _tempmasterdb = "sqlite_temp_master";
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155 /// State of the current connection
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157 private ConnectionState _connectionState;
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159 /// The connection string
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161 private string _connectionString;
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163 /// Nesting level of the transactions open on the connection
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165 internal int _transactionLevel;
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168 /// The default isolation level for new transactions
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170 private IsolationLevel _defaultIsolation;
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172 #if !PLATFORM_COMPACTFRAMEWORK
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174 /// Whether or not the connection is enlisted in a distrubuted transaction
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176 internal SQLiteEnlistment _enlistment;
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179 /// The base SQLite object to interop with
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181 internal SQLiteBase _sql;
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183 /// The database filename minus path and extension
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185 private string _dataSource;
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187 /// Temporary password storage, emptied after the database has been opened
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189 private byte[] _password;
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192 /// Default command timeout
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194 private int _defaultTimeout = 30;
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196 internal bool _binaryGuid;
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198 internal long _version;
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200 private event SQLiteUpdateEventHandler _updateHandler;
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201 private event SQLiteCommitHandler _commitHandler;
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202 private event EventHandler _rollbackHandler;
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204 private SQLiteUpdateCallback _updateCallback;
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205 private SQLiteCommitCallback _commitCallback;
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206 private SQLiteRollbackCallback _rollbackCallback;
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209 /// This event is raised whenever the database is opened or closed.
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211 public override event StateChangeEventHandler StateChange;
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214 /// Constructs a new SQLiteConnection object
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217 /// Default constructor
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219 public SQLiteConnection()
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225 /// Initializes the connection with the specified connection string
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227 /// <param name="connectionString">The connection string to use on the connection</param>
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228 public SQLiteConnection(string connectionString)
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231 _connectionState = ConnectionState.Closed;
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232 _connectionString = "";
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233 _transactionLevel = 0;
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235 //_commandList = new List<WeakReference>();
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237 if (connectionString != null)
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238 ConnectionString = connectionString;
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242 /// Clones the settings and connection string from an existing connection. If the existing connection is already open, this
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243 /// function will open its own connection, enumerate any attached databases of the original connection, and automatically
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244 /// attach to them.
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246 /// <param name="connection"></param>
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247 public SQLiteConnection(SQLiteConnection connection)
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248 : this(connection.ConnectionString)
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252 if (connection.State == ConnectionState.Open)
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256 // Reattach all attached databases from the existing connection
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257 using (DataTable tbl = connection.GetSchema("Catalogs"))
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259 foreach (DataRow row in tbl.Rows)
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261 str = row[0].ToString();
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262 if (String.Compare(str, "main", true, CultureInfo.InvariantCulture) != 0
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263 && String.Compare(str, "temp", true, CultureInfo.InvariantCulture) != 0)
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265 using (SQLiteCommand cmd = CreateCommand())
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267 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "ATTACH DATABASE '{0}' AS [{1}]", row[1], row[0]);
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268 cmd.ExecuteNonQuery();
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276 #if PLATFORM_COMPACTFRAMEWORK
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280 public override int ConnectionTimeout
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290 /// Creates a clone of the connection. All attached databases and user-defined functions are cloned. If the existing connection is open, the cloned connection
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291 /// will also be opened.
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293 /// <returns></returns>
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294 public object Clone()
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296 return new SQLiteConnection(this);
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300 /// Disposes of the SQLiteConnection, closing it if it is active.
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302 /// <param name="disposing">True if the connection is being explicitly closed.</param>
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303 protected override void Dispose(bool disposing)
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305 base.Dispose(disposing);
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312 /// Creates a database file. This just creates a zero-byte file which SQLite
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313 /// will turn into a database when the file is opened properly.
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315 /// <param name="databaseFileName">The file to create</param>
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316 static public void CreateFile(string databaseFileName)
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318 FileStream fs = File.Create(databaseFileName);
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322 #if !SQLITE_STANDARD
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324 /// On NTFS volumes, this function turns on the compression attribute for the given file.
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325 /// It must not be open or referenced at the time of the function call.
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327 /// <param name="databaseFileName">The file to compress</param>
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328 [Obsolete("This functionality is being removed from a future version of the SQLite provider")]
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329 static public void CompressFile(string databaseFileName)
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331 UnsafeNativeMethods.sqlite3_compressfile(databaseFileName);
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335 #if !SQLITE_STANDARD
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337 /// On NTFS volumes, this function removes the compression attribute for the given file.
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338 /// It must not be open or referenced at the time of the function call.
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340 /// <param name="databaseFileName">The file to decompress</param>
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341 [Obsolete("This functionality is being removed from a future version of the SQLite provider")]
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342 static public void DecompressFile(string databaseFileName)
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344 UnsafeNativeMethods.sqlite3_decompressfile(databaseFileName);
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349 /// Raises the state change event when the state of the connection changes
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351 /// <param name="newState">The new state. If it is different from the previous state, an event is raised.</param>
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352 internal void OnStateChange(ConnectionState newState)
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354 ConnectionState oldState = _connectionState;
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355 _connectionState = newState;
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357 if (StateChange != null && oldState != newState)
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359 StateChangeEventArgs e = new StateChangeEventArgs(oldState, newState);
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360 StateChange(this, e);
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365 /// OBSOLETE. Creates a new SQLiteTransaction if one isn't already active on the connection.
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367 /// <param name="isolationLevel">This parameter is ignored.</param>
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368 /// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
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369 /// When FALSE, a writelock is obtained immediately. The default is TRUE, but in a multi-threaded multi-writer
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370 /// environment, one may instead choose to lock the database immediately to avoid any possible writer deadlock.</param>
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371 /// <returns>Returns a SQLiteTransaction object.</returns>
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372 [Obsolete("Use one of the standard BeginTransaction methods, this one will be removed soon")]
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373 public SQLiteTransaction BeginTransaction(IsolationLevel isolationLevel, bool deferredLock)
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375 return (SQLiteTransaction)BeginDbTransaction(deferredLock == false ? IsolationLevel.Serializable : IsolationLevel.ReadCommitted);
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379 /// OBSOLETE. Creates a new SQLiteTransaction if one isn't already active on the connection.
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381 /// <param name="deferredLock">When TRUE, SQLite defers obtaining a write lock until a write operation is requested.
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382 /// When FALSE, a writelock is obtained immediately. The default is false, but in a multi-threaded multi-writer
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383 /// environment, one may instead choose to lock the database immediately to avoid any possible writer deadlock.</param>
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384 /// <returns>Returns a SQLiteTransaction object.</returns>
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385 [Obsolete("Use one of the standard BeginTransaction methods, this one will be removed soon")]
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386 public SQLiteTransaction BeginTransaction(bool deferredLock)
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388 return (SQLiteTransaction)BeginDbTransaction(deferredLock == false ? IsolationLevel.Serializable : IsolationLevel.ReadCommitted);
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392 /// Creates a new SQLiteTransaction if one isn't already active on the connection.
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394 /// <param name="isolationLevel">Supported isolation levels are Serializable, ReadCommitted and Unspecified.</param>
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396 /// Unspecified will use the default isolation level specified in the connection string. If no isolation level is specified in the
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397 /// connection string, Serializable is used.
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398 /// Serializable transactions are the default. In this mode, the engine gets an immediate lock on the database, and no other threads
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399 /// may begin a transaction. Other threads may read from the database, but not write.
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400 /// With a ReadCommitted isolation level, locks are deferred and elevated as needed. It is possible for multiple threads to start
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401 /// a transaction in ReadCommitted mode, but if a thread attempts to commit a transaction while another thread
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402 /// has a ReadCommitted lock, it may timeout or cause a deadlock on both threads until both threads' CommandTimeout's are reached.
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404 /// <returns>Returns a SQLiteTransaction object.</returns>
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405 public new SQLiteTransaction BeginTransaction(IsolationLevel isolationLevel)
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407 return (SQLiteTransaction)BeginDbTransaction(isolationLevel);
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411 /// Creates a new SQLiteTransaction if one isn't already active on the connection.
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413 /// <returns>Returns a SQLiteTransaction object.</returns>
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414 public new SQLiteTransaction BeginTransaction()
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416 return (SQLiteTransaction)BeginDbTransaction(_defaultIsolation);
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420 /// Forwards to the local BeginTransaction() function
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422 /// <param name="isolationLevel">Supported isolation levels are Unspecified, Serializable, and ReadCommitted</param>
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423 /// <returns></returns>
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424 protected override DbTransaction BeginDbTransaction(IsolationLevel isolationLevel)
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426 if (_connectionState != ConnectionState.Open)
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427 throw new InvalidOperationException();
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429 if (isolationLevel == IsolationLevel.Unspecified) isolationLevel = _defaultIsolation;
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431 if (isolationLevel != IsolationLevel.Serializable && isolationLevel != IsolationLevel.ReadCommitted)
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432 throw new ArgumentException("isolationLevel");
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434 return new SQLiteTransaction(this, isolationLevel != IsolationLevel.Serializable);
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438 /// Not implemented
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440 /// <param name="databaseName"></param>
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441 public override void ChangeDatabase(string databaseName)
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443 throw new NotImplementedException();
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447 /// When the database connection is closed, all commands linked to this connection are automatically reset.
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449 public override void Close()
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453 #if !PLATFORM_COMPACTFRAMEWORK
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454 if (_enlistment != null)
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456 // If the connection is enlisted in a transaction scope and the scope is still active,
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457 // we cannot truly shut down this connection until the scope has completed. Therefore make a
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458 // hidden connection temporarily to hold open the connection until the scope has completed.
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459 SQLiteConnection cnn = new SQLiteConnection();
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461 cnn._transactionLevel = _transactionLevel;
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462 cnn._enlistment = _enlistment;
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463 cnn._connectionState = _connectionState;
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464 cnn._version = _version;
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466 cnn._enlistment._transaction._cnn = cnn;
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467 cnn._enlistment._disposeConnection = true;
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469 _enlistment = null;
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477 _transactionLevel = 0;
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479 OnStateChange(ConnectionState.Closed);
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483 /// Clears the connection pool associated with the connection. Any other active connections using the same database file
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484 /// will be discarded instead of returned to the pool when they are closed.
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486 /// <param name="connection"></param>
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487 public static void ClearPool(SQLiteConnection connection)
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489 if (connection._sql == null) return;
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490 connection._sql.ClearPool();
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494 /// Clears all connection pools. Any active connections will be discarded instead of sent to the pool when they are closed.
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496 public static void ClearAllPools()
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498 SQLiteConnectionPool.ClearAllPools();
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502 /// The connection string containing the parameters for the connection
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505 /// <list type="table">
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507 /// <term>Parameter</term>
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508 /// <term>Values</term>
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509 /// <term>Required</term>
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510 /// <term>Default</term>
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513 /// <description>Data Source</description>
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514 /// <description>{filename}</description>
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515 /// <description>Y</description>
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516 /// <description></description>
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519 /// <description>Version</description>
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520 /// <description>3</description>
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521 /// <description>N</description>
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522 /// <description>3</description>
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525 /// <description>UseUTF16Encoding</description>
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526 /// <description><b>True</b><br/><b>False</b></description>
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527 /// <description>N</description>
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528 /// <description>False</description>
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531 /// <description>DateTimeFormat</description>
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532 /// <description><b>Ticks</b> - Use DateTime.Ticks<br/><b>ISO8601</b> - Use ISO8601 DateTime format<br/><b>JulianDay</b> - Use JulianDay format</description>
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533 /// <description>N</description>
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534 /// <description>ISO8601</description>
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537 /// <description>BinaryGUID</description>
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538 /// <description><b>Yes/On/1</b> - Store GUID columns in binary form<br/><b>No/Off/0</b> - Store GUID columns as text</description>
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539 /// <description>N</description>
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540 /// <description>On</description>
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543 /// <description>Cache Size</description>
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544 /// <description>{size in bytes}</description>
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545 /// <description>N</description>
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546 /// <description>2000</description>
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549 /// <description>Synchronous</description>
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550 /// <description><b>Normal</b> - Normal file flushing behavior<br/><b>Full</b> - Full flushing after all writes<br/><b>Off</b> - Underlying OS flushes I/O's</description>
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551 /// <description>N</description>
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552 /// <description>Normal</description>
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555 /// <description>Page Size</description>
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556 /// <description>{size in bytes}</description>
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557 /// <description>N</description>
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558 /// <description>1024</description>
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561 /// <description>Password</description>
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562 /// <description>{password}</description>
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563 /// <description>N</description>
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564 /// <description></description>
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567 /// <description>Enlist</description>
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568 /// <description><B>Y</B> - Automatically enlist in distributed transactions<br/><b>N</b> - No automatic enlistment</description>
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569 /// <description>N</description>
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570 /// <description>Y</description>
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573 /// <description>Pooling</description>
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574 /// <description><b>True</b> - Use connection pooling<br/><b>False</b> - Do not use connection pooling</description>
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575 /// <description>N</description>
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576 /// <description>False</description>
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579 /// <description>FailIfMissing</description>
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580 /// <description><b>True</b> - Don't create the database if it does not exist, throw an error instead<br/><b>False</b> - Automatically create the database if it does not exist</description>
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581 /// <description>N</description>
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582 /// <description>False</description>
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585 /// <description>Max Page Count</description>
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586 /// <description>{size in pages} - Limits the maximum number of pages (limits the size) of the database</description>
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587 /// <description>N</description>
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588 /// <description>0</description>
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591 /// <description>Legacy Format</description>
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592 /// <description><b>True</b> - Use the more compatible legacy 3.x database format<br/><b>False</b> - Use the newer 3.3x database format which compresses numbers more effectively</description>
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593 /// <description>N</description>
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594 /// <description>False</description>
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597 /// <description>Default Timeout</description>
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598 /// <description>{time in seconds}<br/>The default command timeout</description>
\r
599 /// <description>N</description>
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600 /// <description>30</description>
\r
603 /// <description>Journal Mode</description>
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604 /// <description><b>Delete</b> - Delete the journal file after a commit<br/><b>Persist</b> - Zero out and leave the journal file on disk after a commit<br/><b>Off</b> - Disable the rollback journal entirely</description>
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605 /// <description>N</description>
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606 /// <description>Delete</description>
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609 /// <description>Read Only</description>
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610 /// <description><b>True</b> - Open the database for read only access<br/><b>False</b> - Open the database for normal read/write access</description>
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611 /// <description>N</description>
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612 /// <description>False</description>
\r
615 /// <description>Max Pool Size</description>
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616 /// <description>The maximum number of connections for the given connection string that can be in the connection pool</description>
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617 /// <description>N</description>
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618 /// <description>100</description>
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621 /// <description>Default IsolationLevel</description>
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622 /// <description>The default transaciton isolation level</description>
\r
623 /// <description>N</description>
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624 /// <description>Serializable</description>
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628 #if !PLATFORM_COMPACTFRAMEWORK
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629 [RefreshProperties(RefreshProperties.All), DefaultValue("")]
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630 [Editor("SQLite.Designer.SQLiteConnectionStringEditor, SQLite.Designer, Version=1.0.36.0, Culture=neutral, PublicKeyToken=db937bc2d44ff139", "System.Drawing.Design.UITypeEditor, System.Drawing, Version=2.0.0.0, Culture=neutral, PublicKeyToken=b03f5f7f11d50a3a")]
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632 public override string ConnectionString
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636 return _connectionString;
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641 throw new ArgumentNullException();
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643 else if (_connectionState != ConnectionState.Closed)
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644 throw new InvalidOperationException();
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646 _connectionString = value;
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651 /// Create a new SQLiteCommand and associate it with this connection.
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653 /// <returns>Returns an instantiated SQLiteCommand object already assigned to this connection.</returns>
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654 public new SQLiteCommand CreateCommand()
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656 return new SQLiteCommand(this);
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660 /// Forwards to the local CreateCommand() function
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662 /// <returns></returns>
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663 protected override DbCommand CreateDbCommand()
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665 return CreateCommand();
\r
669 /// Returns the filename without extension or path
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671 #if !PLATFORM_COMPACTFRAMEWORK
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672 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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674 public override string DataSource
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678 return _dataSource;
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683 /// Returns an empty string
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685 #if !PLATFORM_COMPACTFRAMEWORK
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686 [DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
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688 public override string Database
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696 internal static string MapUriPath(string path)
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698 if (path.StartsWith ("file://"))
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699 return path.Substring (7);
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700 else if (path.StartsWith ("file:"))
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701 return path.Substring (5);
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702 else if (path.StartsWith ("/"))
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705 throw new InvalidOperationException ("Invalid connection string: invalid URI");
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709 /// Parses the connection string into component parts
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711 /// <param name="connectionString">The connection string to parse</param>
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712 /// <returns>An array of key-value pairs representing each parameter of the connection string</returns>
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713 internal static SortedList<string, string> ParseConnectionString(string connectionString)
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715 string s = connectionString;
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717 SortedList<string, string> ls = new SortedList<string, string>(StringComparer.OrdinalIgnoreCase);
\r
719 // First split into semi-colon delimited values. The Split() function of SQLiteBase accounts for and properly
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720 // skips semi-colons in quoted strings
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721 string[] arParts = SQLiteConvert.Split(s, ';');
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724 int x = arParts.Length;
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725 // For each semi-colon piece, split into key and value pairs by the presence of the = sign
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726 for (n = 0; n < x; n++)
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728 arPiece = SQLiteConvert.Split(arParts[n], '=');
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729 if (arPiece.Length == 2)
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731 ls.Add(arPiece[0], arPiece[1]);
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733 else throw new ArgumentException(String.Format(CultureInfo.CurrentCulture, "Invalid ConnectionString format for parameter \"{0}\"", (arPiece.Length > 0) ? arPiece[0] : "null"));
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738 #if !PLATFORM_COMPACTFRAMEWORK
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740 /// Manual distributed transaction enlistment support
\r
742 /// <param name="transaction">The distributed transaction to enlist in</param>
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743 public override void EnlistTransaction(System.Transactions.Transaction transaction)
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745 if (_transactionLevel > 0 && transaction != null)
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746 throw new ArgumentException("Unable to enlist in transaction, a local transaction already exists");
\r
748 if (_enlistment != null && transaction != _enlistment._scope)
\r
749 throw new ArgumentException("Already enlisted in a transaction");
\r
751 _enlistment = new SQLiteEnlistment(this, transaction);
\r
756 /// Looks for a key in the array of key/values of the parameter string. If not found, return the specified default value
\r
758 /// <param name="items">The list to look in</param>
\r
759 /// <param name="key">The key to find</param>
\r
760 /// <param name="defValue">The default value to return if the key is not found</param>
\r
761 /// <returns>The value corresponding to the specified key, or the default value if not found.</returns>
\r
762 static internal string FindKey(SortedList<string, string> items, string key, string defValue)
\r
766 if (items.TryGetValue(key, out ret)) return ret;
\r
772 /// Opens the connection using the parameters found in the <see cref="ConnectionString">ConnectionString</see>
\r
774 public override void Open()
\r
776 if (_connectionState != ConnectionState.Closed)
\r
777 throw new InvalidOperationException();
\r
781 SortedList<string, string> opts = ParseConnectionString(_connectionString);
\r
784 if (Convert.ToInt32(FindKey(opts, "Version", "3"), CultureInfo.InvariantCulture) != 3)
\r
785 throw new NotSupportedException("Only SQLite Version 3 is supported at this time");
\r
787 fileName = FindKey(opts, "Data Source", "");
\r
789 if (String.IsNullOrEmpty(fileName))
\r
791 fileName = FindKey(opts, "Uri", "");
\r
792 if (String.IsNullOrEmpty(fileName))
\r
793 throw new ArgumentException("Data Source cannot be empty. Use :memory: to open an in-memory database");
\r
795 fileName = MapUriPath(fileName);
\r
798 if (String.Compare(fileName, ":MEMORY:", true, CultureInfo.InvariantCulture) == 0)
\r
799 fileName = ":memory:";
\r
802 #if PLATFORM_COMPACTFRAMEWORK
\r
803 if (fileName.StartsWith(".\\"))
\r
804 fileName = Path.GetDirectoryName(System.Reflection.Assembly.GetCallingAssembly().GetName().CodeBase) + fileName.Substring(1);
\r
806 fileName = ExpandFileName(fileName);
\r
810 bool usePooling = (SQLiteConvert.ToBoolean(FindKey(opts, "Pooling", Boolean.FalseString)) == true);
\r
811 bool bUTF16 = (SQLiteConvert.ToBoolean(FindKey(opts, "UseUTF16Encoding", Boolean.FalseString)) == true);
\r
812 int maxPoolSize = Convert.ToInt32(FindKey(opts, "Max Pool Size", "100"));
\r
814 _defaultTimeout = Convert.ToInt32(FindKey(opts, "Default Timeout", "30"), CultureInfo.CurrentCulture);
\r
816 _defaultIsolation = (IsolationLevel)Enum.Parse(typeof(IsolationLevel), FindKey(opts, "Default IsolationLevel", "Serializable"), true);
\r
817 if (_defaultIsolation != IsolationLevel.Serializable && _defaultIsolation != IsolationLevel.ReadCommitted)
\r
818 throw new NotSupportedException("Invalid Default IsolationLevel specified");
\r
820 SQLiteDateFormats dateFormat = (SQLiteDateFormats)Enum.Parse(typeof(SQLiteDateFormats), FindKey(opts, "DateTimeFormat", "ISO8601"), true);
\r
821 //string temp = FindKey(opts, "DateTimeFormat", "ISO8601");
\r
822 //if (String.Compare(temp, "ticks", true, CultureInfo.InvariantCulture) == 0) dateFormat = SQLiteDateFormats.Ticks;
\r
823 //else if (String.Compare(temp, "julianday", true, CultureInfo.InvariantCulture) == 0) dateFormat = SQLiteDateFormats.JulianDay;
\r
825 if (bUTF16) // SQLite automatically sets the encoding of the database to UTF16 if called from sqlite3_open16()
\r
826 _sql = new SQLite3_UTF16(dateFormat);
\r
828 _sql = new SQLite3(dateFormat);
\r
830 SQLiteOpenFlagsEnum flags = SQLiteOpenFlagsEnum.None;
\r
832 if (SQLiteConvert.ToBoolean(FindKey(opts, "FailIfMissing", Boolean.FalseString)) == false)
\r
833 flags |= SQLiteOpenFlagsEnum.Create;
\r
835 if (SQLiteConvert.ToBoolean(FindKey(opts, "Read Only", Boolean.FalseString)) == true)
\r
836 flags |= SQLiteOpenFlagsEnum.ReadOnly;
\r
838 flags |= SQLiteOpenFlagsEnum.ReadWrite;
\r
840 _sql.Open(fileName, flags, maxPoolSize, usePooling);
\r
842 _binaryGuid = (SQLiteConvert.ToBoolean(FindKey(opts, "BinaryGUID", Boolean.TrueString)) == true);
\r
844 string password = FindKey(opts, "Password", null);
\r
846 if (String.IsNullOrEmpty(password) == false)
\r
847 _sql.SetPassword(System.Text.UTF8Encoding.UTF8.GetBytes(password));
\r
848 else if (_password != null)
\r
849 _sql.SetPassword(_password);
\r
852 _dataSource = Path.GetFileNameWithoutExtension(fileName);
\r
854 OnStateChange(ConnectionState.Open);
\r
857 using (SQLiteCommand cmd = CreateCommand())
\r
861 if (fileName != ":memory:")
\r
863 defValue = FindKey(opts, "Page Size", "1024");
\r
864 if (Convert.ToInt32(defValue, CultureInfo.InvariantCulture) != 1024)
\r
866 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA page_size={0}", defValue);
\r
867 cmd.ExecuteNonQuery();
\r
871 defValue = FindKey(opts, "Max Page Count", "0");
\r
872 if (Convert.ToInt32(defValue, CultureInfo.InvariantCulture) != 0)
\r
874 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA max_page_count={0}", defValue);
\r
875 cmd.ExecuteNonQuery();
\r
878 defValue = FindKey(opts, "Legacy Format", Boolean.FalseString);
\r
879 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA legacy_file_format={0}", SQLiteConvert.ToBoolean(defValue) == true ? "ON" : "OFF");
\r
880 cmd.ExecuteNonQuery();
\r
882 defValue = FindKey(opts, "Synchronous", "Normal");
\r
883 if (String.Compare(defValue, "Full", StringComparison.OrdinalIgnoreCase) != 0)
\r
885 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA synchronous={0}", defValue);
\r
886 cmd.ExecuteNonQuery();
\r
889 defValue = FindKey(opts, "Cache Size", "2000");
\r
890 if (Convert.ToInt32(defValue, CultureInfo.InvariantCulture) != 2000)
\r
892 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA cache_size={0}", defValue);
\r
893 cmd.ExecuteNonQuery();
\r
896 defValue = FindKey(opts, "Journal Mode", "Delete");
\r
897 if (String.Compare(defValue, "Default", StringComparison.OrdinalIgnoreCase) != 0)
\r
899 cmd.CommandText = String.Format(CultureInfo.InvariantCulture, "PRAGMA journal_mode={0}", defValue);
\r
900 cmd.ExecuteNonQuery();
\r
904 if (_commitHandler != null)
\r
905 _sql.SetCommitHook(_commitCallback);
\r
907 if (_updateHandler != null)
\r
908 _sql.SetUpdateHook(_updateCallback);
\r
910 if (_rollbackHandler != null)
\r
911 _sql.SetRollbackHook(_rollbackCallback);
\r
913 #if !PLATFORM_COMPACTFRAMEWORK
\r
914 if (Transactions.Transaction.Current != null && SQLiteConvert.ToBoolean(FindKey(opts, "Enlist", Boolean.TrueString)) == true)
\r
915 EnlistTransaction(Transactions.Transaction.Current);
\r
918 catch (SQLiteException)
\r
926 /// Gets/sets the default command timeout for newly-created commands. This is especially useful for
\r
927 /// commands used internally such as inside a SQLiteTransaction, where setting the timeout is not possible.
\r
928 /// This can also be set in the ConnectionString with "Default Timeout"
\r
930 public int DefaultTimeout
\r
932 get { return _defaultTimeout; }
\r
933 set { _defaultTimeout = value; }
\r
937 /// Returns the version of the underlying SQLite database engine
\r
939 #if !PLATFORM_COMPACTFRAMEWORK
\r
940 [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
\r
942 public override string ServerVersion
\r
946 if (_connectionState != ConnectionState.Open)
\r
947 throw new InvalidOperationException();
\r
949 return _sql.Version;
\r
954 /// Returns the version of the underlying SQLite database engine
\r
956 public static string SQLiteVersion
\r
958 get { return SQLite3.SQLiteVersion; }
\r
962 /// Returns the state of the connection.
\r
964 #if !PLATFORM_COMPACTFRAMEWORK
\r
965 [Browsable(false), DesignerSerializationVisibility(DesignerSerializationVisibility.Hidden)]
\r
967 public override ConnectionState State
\r
971 return _connectionState;
\r
976 /// Change the password (or assign a password) to an open database.
\r
979 /// No readers or writers may be active for this process. The database must already be open
\r
980 /// and if it already was password protected, the existing password must already have been supplied.
\r
982 /// <param name="newPassword">The new password to assign to the database</param>
\r
983 public void ChangePassword(string newPassword)
\r
985 ChangePassword(String.IsNullOrEmpty(newPassword) ? null : System.Text.UTF8Encoding.UTF8.GetBytes(newPassword));
\r
989 /// Change the password (or assign a password) to an open database.
\r
992 /// No readers or writers may be active for this process. The database must already be open
\r
993 /// and if it already was password protected, the existing password must already have been supplied.
\r
995 /// <param name="newPassword">The new password to assign to the database</param>
\r
996 public void ChangePassword(byte[] newPassword)
\r
998 if (_connectionState != ConnectionState.Open)
\r
999 throw new InvalidOperationException("Database must be opened before changing the password.");
\r
1001 _sql.ChangePassword(newPassword);
\r
1005 /// Sets the password for a password-protected database. A password-protected database is
\r
1006 /// unusable for any operation until the password has been set.
\r
1008 /// <param name="databasePassword">The password for the database</param>
\r
1009 public void SetPassword(string databasePassword)
\r
1011 SetPassword(String.IsNullOrEmpty(databasePassword) ? null : System.Text.UTF8Encoding.UTF8.GetBytes(databasePassword));
\r
1015 /// Sets the password for a password-protected database. A password-protected database is
\r
1016 /// unusable for any operation until the password has been set.
\r
1018 /// <param name="databasePassword">The password for the database</param>
\r
1019 public void SetPassword(byte[] databasePassword)
\r
1021 if (_connectionState != ConnectionState.Closed)
\r
1022 throw new InvalidOperationException("Password can only be set before the database is opened.");
\r
1024 if (databasePassword != null)
\r
1025 if (databasePassword.Length == 0) databasePassword = null;
\r
1027 _password = databasePassword;
\r
1031 /// Expand the filename of the data source, resolving the |DataDirectory| macro as appropriate.
\r
1033 /// <param name="sourceFile">The database filename to expand</param>
\r
1034 /// <returns>The expanded path and filename of the filename</returns>
\r
1035 private string ExpandFileName(string sourceFile)
\r
1037 if (String.IsNullOrEmpty(sourceFile)) return sourceFile;
\r
1039 if (sourceFile.StartsWith(_dataDirectory, StringComparison.OrdinalIgnoreCase))
\r
1041 string dataDirectory;
\r
1043 #if PLATFORM_COMPACTFRAMEWORK
\r
1044 dataDirectory = Path.GetDirectoryName(System.Reflection.Assembly.GetCallingAssembly().GetName().CodeBase);
\r
1046 dataDirectory = AppDomain.CurrentDomain.GetData("DataDirectory") as string;
\r
1047 if (String.IsNullOrEmpty(dataDirectory))
\r
1048 dataDirectory = AppDomain.CurrentDomain.BaseDirectory;
\r
1051 if (sourceFile.Length > _dataDirectory.Length)
\r
1053 if (sourceFile[_dataDirectory.Length] == Path.DirectorySeparatorChar ||
\r
1054 sourceFile[_dataDirectory.Length] == Path.AltDirectorySeparatorChar)
\r
1055 sourceFile = sourceFile.Remove(_dataDirectory.Length, 1);
\r
1057 sourceFile = Path.Combine(dataDirectory, sourceFile.Substring(_dataDirectory.Length));
\r
1060 #if !PLATFORM_COMPACTFRAMEWORK
\r
1061 sourceFile = Path.GetFullPath(sourceFile);
\r
1064 return sourceFile;
\r
1068 /// The following commands are used to extract schema information out of the database. Valid schema types are:
\r
1069 /// <list type="bullet">
\r
1071 /// <description>MetaDataCollections</description>
\r
1074 /// <description>DataSourceInformation</description>
\r
1077 /// <description>Catalogs</description>
\r
1080 /// <description>Columns</description>
\r
1083 /// <description>ForeignKeys</description>
\r
1086 /// <description>Indexes</description>
\r
1089 /// <description>IndexColumns</description>
\r
1092 /// <description>Tables</description>
\r
1095 /// <description>Views</description>
\r
1098 /// <description>ViewColumns</description>
\r
1103 /// Returns the MetaDataCollections schema
\r
1105 /// <returns>A DataTable of the MetaDataCollections schema</returns>
\r
1106 public override DataTable GetSchema()
\r
1108 return GetSchema("MetaDataCollections", null);
\r
1112 /// Returns schema information of the specified collection
\r
1114 /// <param name="collectionName">The schema collection to retrieve</param>
\r
1115 /// <returns>A DataTable of the specified collection</returns>
\r
1116 public override DataTable GetSchema(string collectionName)
\r
1118 return GetSchema(collectionName, new string[0]);
\r
1122 /// Retrieves schema information using the specified constraint(s) for the specified collection
\r
1124 /// <param name="collectionName">The collection to retrieve</param>
\r
1125 /// <param name="restrictionValues">The restrictions to impose</param>
\r
1126 /// <returns>A DataTable of the specified collection</returns>
\r
1127 public override DataTable GetSchema(string collectionName, string[] restrictionValues)
\r
1129 if (_connectionState != ConnectionState.Open)
\r
1130 throw new InvalidOperationException();
\r
1132 string[] parms = new string[5];
\r
1134 if (restrictionValues == null) restrictionValues = new string[0];
\r
1135 restrictionValues.CopyTo(parms, 0);
\r
1137 switch (collectionName.ToUpper(CultureInfo.InvariantCulture))
\r
1139 case "METADATACOLLECTIONS":
\r
1140 return Schema_MetaDataCollections();
\r
1141 case "DATASOURCEINFORMATION":
\r
1142 return Schema_DataSourceInformation();
\r
1144 return Schema_DataTypes();
\r
1146 case "TABLECOLUMNS":
\r
1147 return Schema_Columns(parms[0], parms[2], parms[3]);
\r
1149 return Schema_Indexes(parms[0], parms[2], parms[3]);
\r
1151 return Schema_Triggers(parms[0], parms[2], parms[3]);
\r
1152 case "INDEXCOLUMNS":
\r
1153 return Schema_IndexColumns(parms[0], parms[2], parms[3], parms[4]);
\r
1155 return Schema_Tables(parms[0], parms[2], parms[3]);
\r
1157 return Schema_Views(parms[0], parms[2]);
\r
1158 case "VIEWCOLUMNS":
\r
1159 return Schema_ViewColumns(parms[0], parms[2], parms[3]);
\r
1160 case "FOREIGNKEYS":
\r
1161 return Schema_ForeignKeys(parms[0], parms[2], parms[3]);
\r
1163 return Schema_Catalogs(parms[0]);
\r
1164 case "RESERVEDWORDS":
\r
1165 return Schema_ReservedWords();
\r
1167 throw new NotSupportedException();
\r
1170 private static DataTable Schema_ReservedWords()
\r
1172 DataTable tbl = new DataTable("MetaDataCollections");
\r
1174 tbl.Locale = CultureInfo.InvariantCulture;
\r
1175 tbl.Columns.Add("ReservedWord", typeof(string));
\r
1176 tbl.Columns.Add("MaximumVersion", typeof(string));
\r
1177 tbl.Columns.Add("MinimumVersion", typeof(string));
\r
1179 tbl.BeginLoadData();
\r
1181 foreach (string word in SR.Keywords.Split(new char[] { ',' }))
\r
1183 row = tbl.NewRow();
\r
1185 tbl.Rows.Add(row);
\r
1188 tbl.AcceptChanges();
\r
1189 tbl.EndLoadData();
\r
1195 /// Builds a MetaDataCollections schema datatable
\r
1197 /// <returns>DataTable</returns>
\r
1198 private static DataTable Schema_MetaDataCollections()
\r
1200 DataTable tbl = new DataTable("MetaDataCollections");
\r
1202 tbl.Locale = CultureInfo.InvariantCulture;
\r
1203 tbl.Columns.Add("CollectionName", typeof(string));
\r
1204 tbl.Columns.Add("NumberOfRestrictions", typeof(int));
\r
1205 tbl.Columns.Add("NumberOfIdentifierParts", typeof(int));
\r
1207 tbl.BeginLoadData();
\r
1209 StringReader reader = new StringReader(SR.MetaDataCollections);
\r
1210 tbl.ReadXml(reader);
\r
1213 tbl.AcceptChanges();
\r
1214 tbl.EndLoadData();
\r
1220 /// Builds a DataSourceInformation datatable
\r
1222 /// <returns>DataTable</returns>
\r
1223 private DataTable Schema_DataSourceInformation()
\r
1225 DataTable tbl = new DataTable("DataSourceInformation");
\r
1228 tbl.Locale = CultureInfo.InvariantCulture;
\r
1229 tbl.Columns.Add(DbMetaDataColumnNames.CompositeIdentifierSeparatorPattern, typeof(string));
\r
1230 tbl.Columns.Add(DbMetaDataColumnNames.DataSourceProductName, typeof(string));
\r
1231 tbl.Columns.Add(DbMetaDataColumnNames.DataSourceProductVersion, typeof(string));
\r
1232 tbl.Columns.Add(DbMetaDataColumnNames.DataSourceProductVersionNormalized, typeof(string));
\r
1233 tbl.Columns.Add(DbMetaDataColumnNames.GroupByBehavior, typeof(int));
\r
1234 tbl.Columns.Add(DbMetaDataColumnNames.IdentifierPattern, typeof(string));
\r
1235 tbl.Columns.Add(DbMetaDataColumnNames.IdentifierCase, typeof(int));
\r
1236 tbl.Columns.Add(DbMetaDataColumnNames.OrderByColumnsInSelect, typeof(bool));
\r
1237 tbl.Columns.Add(DbMetaDataColumnNames.ParameterMarkerFormat, typeof(string));
\r
1238 tbl.Columns.Add(DbMetaDataColumnNames.ParameterMarkerPattern, typeof(string));
\r
1239 tbl.Columns.Add(DbMetaDataColumnNames.ParameterNameMaxLength, typeof(int));
\r
1240 tbl.Columns.Add(DbMetaDataColumnNames.ParameterNamePattern, typeof(string));
\r
1241 tbl.Columns.Add(DbMetaDataColumnNames.QuotedIdentifierPattern, typeof(string));
\r
1242 tbl.Columns.Add(DbMetaDataColumnNames.QuotedIdentifierCase, typeof(int));
\r
1243 tbl.Columns.Add(DbMetaDataColumnNames.StatementSeparatorPattern, typeof(string));
\r
1244 tbl.Columns.Add(DbMetaDataColumnNames.StringLiteralPattern, typeof(string));
\r
1245 tbl.Columns.Add(DbMetaDataColumnNames.SupportedJoinOperators, typeof(int));
\r
1247 tbl.BeginLoadData();
\r
1249 row = tbl.NewRow();
\r
1250 row.ItemArray = new object[] {
\r
1256 @"(^\[\p{Lo}\p{Lu}\p{Ll}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Nd}@$#_]*$)|(^\[[^\]\0]|\]\]+\]$)|(^\""[^\""\0]|\""\""+\""$)",
\r
1260 @"@[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)",
\r
1262 @"^[\p{Lo}\p{Lu}\p{Ll}\p{Lm}_@#][\p{Lo}\p{Lu}\p{Ll}\p{Lm}\p{Nd}\uff3f_@#\$]*(?=\s+|$)",
\r
1263 @"(([^\[]|\]\])*)",
\r
1266 @"'(([^']|'')*)'",
\r
1269 tbl.Rows.Add(row);
\r
1271 tbl.AcceptChanges();
\r
1272 tbl.EndLoadData();
\r
1278 /// Build a Columns schema
\r
1280 /// <param name="strCatalog">The catalog (attached database) to query, can be null</param>
\r
1281 /// <param name="strTable">The table to retrieve schema information for, must not be null</param>
\r
1282 /// <param name="strColumn">The column to retrieve schema information for, can be null</param>
\r
1283 /// <returns>DataTable</returns>
\r
1284 private DataTable Schema_Columns(string strCatalog, string strTable, string strColumn)
\r
1286 DataTable tbl = new DataTable("Columns");
\r
1289 tbl.Locale = CultureInfo.InvariantCulture;
\r
1290 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1291 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1292 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1293 tbl.Columns.Add("COLUMN_NAME", typeof(string));
\r
1294 tbl.Columns.Add("COLUMN_GUID", typeof(Guid));
\r
1295 tbl.Columns.Add("COLUMN_PROPID", typeof(long));
\r
1296 tbl.Columns.Add("ORDINAL_POSITION", typeof(int));
\r
1297 tbl.Columns.Add("COLUMN_HASDEFAULT", typeof(bool));
\r
1298 tbl.Columns.Add("COLUMN_DEFAULT", typeof(string));
\r
1299 tbl.Columns.Add("COLUMN_FLAGS", typeof(long));
\r
1300 tbl.Columns.Add("IS_NULLABLE", typeof(bool));
\r
1301 tbl.Columns.Add("DATA_TYPE", typeof(string));
\r
1302 tbl.Columns.Add("TYPE_GUID", typeof(Guid));
\r
1303 tbl.Columns.Add("CHARACTER_MAXIMUM_LENGTH", typeof(int));
\r
1304 tbl.Columns.Add("CHARACTER_OCTET_LENGTH", typeof(int));
\r
1305 tbl.Columns.Add("NUMERIC_PRECISION", typeof(int));
\r
1306 tbl.Columns.Add("NUMERIC_SCALE", typeof(int));
\r
1307 tbl.Columns.Add("DATETIME_PRECISION", typeof(long));
\r
1308 tbl.Columns.Add("CHARACTER_SET_CATALOG", typeof(string));
\r
1309 tbl.Columns.Add("CHARACTER_SET_SCHEMA", typeof(string));
\r
1310 tbl.Columns.Add("CHARACTER_SET_NAME", typeof(string));
\r
1311 tbl.Columns.Add("COLLATION_CATALOG", typeof(string));
\r
1312 tbl.Columns.Add("COLLATION_SCHEMA", typeof(string));
\r
1313 tbl.Columns.Add("COLLATION_NAME", typeof(string));
\r
1314 tbl.Columns.Add("DOMAIN_CATALOG", typeof(string));
\r
1315 tbl.Columns.Add("DOMAIN_NAME", typeof(string));
\r
1316 tbl.Columns.Add("DESCRIPTION", typeof(string));
\r
1317 tbl.Columns.Add("PRIMARY_KEY", typeof(bool));
\r
1318 tbl.Columns.Add("EDM_TYPE", typeof(string));
\r
1319 tbl.Columns.Add("AUTOINCREMENT", typeof(bool));
\r
1320 tbl.Columns.Add("UNIQUE", typeof(bool));
\r
1322 tbl.BeginLoadData();
\r
1324 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
1326 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1328 using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'table' OR [type] LIKE 'view'", strCatalog, master), this))
\r
1329 using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
\r
1331 while (rdTables.Read())
\r
1333 if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
\r
1337 using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
\r
1338 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
\r
1339 using (DataTable tblSchema = rd.GetSchemaTable(true, true))
\r
1341 foreach (DataRow schemaRow in tblSchema.Rows)
\r
1343 if (String.Compare(schemaRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
\r
1344 || strColumn == null)
\r
1346 row = tbl.NewRow();
\r
1348 row["NUMERIC_PRECISION"] = schemaRow[SchemaTableColumn.NumericPrecision];
\r
1349 row["NUMERIC_SCALE"] = schemaRow[SchemaTableColumn.NumericScale];
\r
1350 row["TABLE_NAME"] = rdTables.GetString(2);
\r
1351 row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.ColumnName];
\r
1352 row["TABLE_CATALOG"] = strCatalog;
\r
1353 row["ORDINAL_POSITION"] = schemaRow[SchemaTableColumn.ColumnOrdinal];
\r
1354 row["COLUMN_HASDEFAULT"] = (schemaRow[SchemaTableOptionalColumn.DefaultValue] != DBNull.Value);
\r
1355 row["COLUMN_DEFAULT"] = schemaRow[SchemaTableOptionalColumn.DefaultValue];
\r
1356 row["IS_NULLABLE"] = schemaRow[SchemaTableColumn.AllowDBNull];
\r
1357 row["DATA_TYPE"] = schemaRow["DataTypeName"].ToString().ToLower(CultureInfo.InvariantCulture);
\r
1358 row["EDM_TYPE"] = SQLiteConvert.DbTypeToTypeName((DbType)schemaRow[SchemaTableColumn.ProviderType]).ToString().ToLower(CultureInfo.InvariantCulture);
\r
1359 row["CHARACTER_MAXIMUM_LENGTH"] = schemaRow[SchemaTableColumn.ColumnSize];
\r
1360 row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
\r
1361 row["PRIMARY_KEY"] = schemaRow[SchemaTableColumn.IsKey];
\r
1362 row["AUTOINCREMENT"] = schemaRow[SchemaTableOptionalColumn.IsAutoIncrement];
\r
1363 row["COLLATION_NAME"] = schemaRow["CollationType"];
\r
1364 row["UNIQUE"] = schemaRow[SchemaTableColumn.IsUnique];
\r
1365 tbl.Rows.Add(row);
\r
1370 catch(SQLiteException)
\r
1377 tbl.AcceptChanges();
\r
1378 tbl.EndLoadData();
\r
1384 /// Returns index information for the given database and catalog
\r
1386 /// <param name="strCatalog">The catalog (attached database) to query, can be null</param>
\r
1387 /// <param name="strIndex">The name of the index to retrieve information for, can be null</param>
\r
1388 /// <param name="strTable">The table to retrieve index information for, can be null</param>
\r
1389 /// <returns>DataTable</returns>
\r
1390 private DataTable Schema_Indexes(string strCatalog, string strTable, string strIndex)
\r
1392 DataTable tbl = new DataTable("Indexes");
\r
1394 List<int> primaryKeys = new List<int>();
\r
1397 tbl.Locale = CultureInfo.InvariantCulture;
\r
1398 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1399 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1400 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1401 tbl.Columns.Add("INDEX_CATALOG", typeof(string));
\r
1402 tbl.Columns.Add("INDEX_SCHEMA", typeof(string));
\r
1403 tbl.Columns.Add("INDEX_NAME", typeof(string));
\r
1404 tbl.Columns.Add("PRIMARY_KEY", typeof(bool));
\r
1405 tbl.Columns.Add("UNIQUE", typeof(bool));
\r
1406 tbl.Columns.Add("CLUSTERED", typeof(bool));
\r
1407 tbl.Columns.Add("TYPE", typeof(int));
\r
1408 tbl.Columns.Add("FILL_FACTOR", typeof(int));
\r
1409 tbl.Columns.Add("INITIAL_SIZE", typeof(int));
\r
1410 tbl.Columns.Add("NULLS", typeof(int));
\r
1411 tbl.Columns.Add("SORT_BOOKMARKS", typeof(bool));
\r
1412 tbl.Columns.Add("AUTO_UPDATE", typeof(bool));
\r
1413 tbl.Columns.Add("NULL_COLLATION", typeof(int));
\r
1414 tbl.Columns.Add("ORDINAL_POSITION", typeof(int));
\r
1415 tbl.Columns.Add("COLUMN_NAME", typeof(string));
\r
1416 tbl.Columns.Add("COLUMN_GUID", typeof(Guid));
\r
1417 tbl.Columns.Add("COLUMN_PROPID", typeof(long));
\r
1418 tbl.Columns.Add("COLLATION", typeof(short));
\r
1419 tbl.Columns.Add("CARDINALITY", typeof(Decimal));
\r
1420 tbl.Columns.Add("PAGES", typeof(int));
\r
1421 tbl.Columns.Add("FILTER_CONDITION", typeof(string));
\r
1422 tbl.Columns.Add("INTEGRATED", typeof(bool));
\r
1423 tbl.Columns.Add("INDEX_DEFINITION", typeof(string));
\r
1425 tbl.BeginLoadData();
\r
1427 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
1429 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1431 using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'table'", strCatalog, master), this))
\r
1432 using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
\r
1434 while (rdTables.Read())
\r
1436 maybeRowId = false;
\r
1437 primaryKeys.Clear();
\r
1438 if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
\r
1440 // First, look for any rowid indexes -- which sqlite defines are INTEGER PRIMARY KEY columns.
\r
1441 // Such indexes are not listed in the indexes list but count as indexes just the same.
\r
1444 using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
\r
1445 using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
\r
1447 while (rdTable.Read())
\r
1449 if (rdTable.GetInt32(5) == 1)
\r
1451 primaryKeys.Add(rdTable.GetInt32(0));
\r
1453 // If the primary key is of type INTEGER, then its a rowid and we need to make a fake index entry for it.
\r
1454 if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
\r
1455 maybeRowId = true;
\r
1460 catch (SQLiteException)
\r
1463 if (primaryKeys.Count == 1 && maybeRowId == true)
\r
1465 row = tbl.NewRow();
\r
1467 row["TABLE_CATALOG"] = strCatalog;
\r
1468 row["TABLE_NAME"] = rdTables.GetString(2);
\r
1469 row["INDEX_CATALOG"] = strCatalog;
\r
1470 row["PRIMARY_KEY"] = true;
\r
1471 row["INDEX_NAME"] = String.Format(CultureInfo.InvariantCulture, "{1}_PK_{0}", rdTables.GetString(2), master);
\r
1472 row["UNIQUE"] = true;
\r
1474 if (String.Compare((string)row["INDEX_NAME"], strIndex, true, CultureInfo.InvariantCulture) == 0
\r
1475 || strIndex == null)
\r
1477 tbl.Rows.Add(row);
\r
1480 primaryKeys.Clear();
\r
1483 // Now fetch all the rest of the indexes.
\r
1486 using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_list([{1}])", strCatalog, rdTables.GetString(2)), this))
\r
1487 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
\r
1491 if (String.Compare(rd.GetString(1), strIndex, true, CultureInfo.InvariantCulture) == 0
\r
1492 || strIndex == null)
\r
1494 row = tbl.NewRow();
\r
1496 row["TABLE_CATALOG"] = strCatalog;
\r
1497 row["TABLE_NAME"] = rdTables.GetString(2);
\r
1498 row["INDEX_CATALOG"] = strCatalog;
\r
1499 row["INDEX_NAME"] = rd.GetString(1);
\r
1500 row["UNIQUE"] = rd.GetBoolean(2);
\r
1501 row["PRIMARY_KEY"] = false;
\r
1503 // get the index definition
\r
1504 using (SQLiteCommand cmdIndexes = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{2}] WHERE [type] LIKE 'index' AND [name] LIKE '{1}'", strCatalog, rd.GetString(1).Replace("'", "''"), master), this))
\r
1505 using (SQLiteDataReader rdIndexes = cmdIndexes.ExecuteReader())
\r
1507 while (rdIndexes.Read())
\r
1509 if (rdIndexes.IsDBNull(4) == false)
\r
1510 row["INDEX_DEFINITION"] = rdIndexes.GetString(4);
\r
1515 // Now for the really hard work. Figure out which index is the primary key index.
\r
1516 // The only way to figure it out is to check if the index was an autoindex and if we have a non-rowid
\r
1517 // primary key, and all the columns in the given index match the primary key columns
\r
1518 if (primaryKeys.Count > 0 && rd.GetString(1).StartsWith("sqlite_autoindex_" + rdTables.GetString(2), StringComparison.InvariantCultureIgnoreCase) == true)
\r
1520 using (SQLiteCommand cmdDetails = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rd.GetString(1)), this))
\r
1521 using (SQLiteDataReader rdDetails = cmdDetails.ExecuteReader())
\r
1524 while (rdDetails.Read())
\r
1526 if (primaryKeys.Contains(rdDetails.GetInt32(1)) == false)
\r
1533 if (nMatches == primaryKeys.Count)
\r
1535 row["PRIMARY_KEY"] = true;
\r
1536 primaryKeys.Clear();
\r
1541 tbl.Rows.Add(row);
\r
1546 catch (SQLiteException)
\r
1553 tbl.AcceptChanges();
\r
1554 tbl.EndLoadData();
\r
1559 private DataTable Schema_Triggers(string catalog, string table, string triggerName)
\r
1561 DataTable tbl = new DataTable("Triggers");
\r
1564 tbl.Locale = CultureInfo.InvariantCulture;
\r
1565 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1566 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1567 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1568 tbl.Columns.Add("TRIGGER_NAME", typeof(string));
\r
1569 tbl.Columns.Add("TRIGGER_DEFINITION", typeof(string));
\r
1571 tbl.BeginLoadData();
\r
1573 if (String.IsNullOrEmpty(table)) table = null;
\r
1574 if (String.IsNullOrEmpty(catalog)) catalog = "main";
\r
1575 string master = (String.Compare(catalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1577 using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT [type], [name], [tbl_name], [rootpage], [sql], [rowid] FROM [{0}].[{1}] WHERE [type] LIKE 'trigger'", catalog, master), this))
\r
1578 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
\r
1582 if (String.Compare(rd.GetString(1), triggerName, true, CultureInfo.InvariantCulture) == 0
\r
1583 || triggerName == null)
\r
1585 if (table == null || String.Compare(table, rd.GetString(2), true, CultureInfo.InvariantCulture) == 0)
\r
1587 row = tbl.NewRow();
\r
1589 row["TABLE_CATALOG"] = catalog;
\r
1590 row["TABLE_NAME"] = rd.GetString(2);
\r
1591 row["TRIGGER_NAME"] = rd.GetString(1);
\r
1592 row["TRIGGER_DEFINITION"] = rd.GetString(4);
\r
1594 tbl.Rows.Add(row);
\r
1599 tbl.AcceptChanges();
\r
1600 tbl.EndLoadData();
\r
1606 /// Retrieves table schema information for the database and catalog
\r
1608 /// <param name="strCatalog">The catalog (attached database) to retrieve tables on</param>
\r
1609 /// <param name="strTable">The table to retrieve, can be null</param>
\r
1610 /// <param name="strType">The table type, can be null</param>
\r
1611 /// <returns>DataTable</returns>
\r
1612 private DataTable Schema_Tables(string strCatalog, string strTable, string strType)
\r
1614 DataTable tbl = new DataTable("Tables");
\r
1618 tbl.Locale = CultureInfo.InvariantCulture;
\r
1619 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1620 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1621 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1622 tbl.Columns.Add("TABLE_TYPE", typeof(string));
\r
1623 tbl.Columns.Add("TABLE_ID", typeof(long));
\r
1624 tbl.Columns.Add("TABLE_ROOTPAGE", typeof(int));
\r
1625 tbl.Columns.Add("TABLE_DEFINITION", typeof(string));
\r
1626 tbl.BeginLoadData();
\r
1628 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
1630 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1632 using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT [type], [name], [tbl_name], [rootpage], [sql], [rowid] FROM [{0}].[{1}] WHERE [type] LIKE 'table'", strCatalog, master), this))
\r
1633 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
\r
1637 strItem = rd.GetString(0);
\r
1638 if (String.Compare(rd.GetString(2), 0, "SQLITE_", 0, 7, true, CultureInfo.InvariantCulture) == 0)
\r
1639 strItem = "SYSTEM_TABLE";
\r
1641 if (String.Compare(strType, strItem, true, CultureInfo.InvariantCulture) == 0
\r
1642 || strType == null)
\r
1644 if (String.Compare(rd.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0
\r
1645 || strTable == null)
\r
1647 row = tbl.NewRow();
\r
1649 row["TABLE_CATALOG"] = strCatalog;
\r
1650 row["TABLE_NAME"] = rd.GetString(2);
\r
1651 row["TABLE_TYPE"] = strItem;
\r
1652 row["TABLE_ID"] = rd.GetInt64(5);
\r
1653 row["TABLE_ROOTPAGE"] = rd.GetInt32(3);
\r
1654 row["TABLE_DEFINITION"] = rd.GetString(4);
\r
1656 tbl.Rows.Add(row);
\r
1662 tbl.AcceptChanges();
\r
1663 tbl.EndLoadData();
\r
1669 /// Retrieves view schema information for the database
\r
1671 /// <param name="strCatalog">The catalog (attached database) to retrieve views on</param>
\r
1672 /// <param name="strView">The view name, can be null</param>
\r
1673 /// <returns>DataTable</returns>
\r
1674 private DataTable Schema_Views(string strCatalog, string strView)
\r
1676 DataTable tbl = new DataTable("Views");
\r
1681 tbl.Locale = CultureInfo.InvariantCulture;
\r
1682 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1683 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1684 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1685 tbl.Columns.Add("VIEW_DEFINITION", typeof(string));
\r
1686 tbl.Columns.Add("CHECK_OPTION", typeof(bool));
\r
1687 tbl.Columns.Add("IS_UPDATABLE", typeof(bool));
\r
1688 tbl.Columns.Add("DESCRIPTION", typeof(string));
\r
1689 tbl.Columns.Add("DATE_CREATED", typeof(DateTime));
\r
1690 tbl.Columns.Add("DATE_MODIFIED", typeof(DateTime));
\r
1692 tbl.BeginLoadData();
\r
1694 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
1696 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1698 using (SQLiteCommand cmd = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'view'", strCatalog, master), this))
\r
1699 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
\r
1703 if (String.Compare(rd.GetString(1), strView, true, CultureInfo.InvariantCulture) == 0
\r
1704 || String.IsNullOrEmpty(strView))
\r
1706 strItem = rd.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
\r
1707 nPos = CultureInfo.InvariantCulture.CompareInfo.IndexOf(strItem, " AS ", CompareOptions.IgnoreCase);
\r
1710 strItem = strItem.Substring(nPos + 4).Trim();
\r
1711 row = tbl.NewRow();
\r
1713 row["TABLE_CATALOG"] = strCatalog;
\r
1714 row["TABLE_NAME"] = rd.GetString(2);
\r
1715 row["IS_UPDATABLE"] = false;
\r
1716 row["VIEW_DEFINITION"] = strItem;
\r
1718 tbl.Rows.Add(row);
\r
1724 tbl.AcceptChanges();
\r
1725 tbl.EndLoadData();
\r
1731 /// Retrieves catalog (attached databases) schema information for the database
\r
1733 /// <param name="strCatalog">The catalog to retrieve, can be null</param>
\r
1734 /// <returns>DataTable</returns>
\r
1735 private DataTable Schema_Catalogs(string strCatalog)
\r
1737 DataTable tbl = new DataTable("Catalogs");
\r
1740 tbl.Locale = CultureInfo.InvariantCulture;
\r
1741 tbl.Columns.Add("CATALOG_NAME", typeof(string));
\r
1742 tbl.Columns.Add("DESCRIPTION", typeof(string));
\r
1743 tbl.Columns.Add("ID", typeof(long));
\r
1745 tbl.BeginLoadData();
\r
1747 using (SQLiteCommand cmd = new SQLiteCommand("PRAGMA database_list", this))
\r
1748 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader())
\r
1752 if (String.Compare(rd.GetString(1), strCatalog, true, CultureInfo.InvariantCulture) == 0
\r
1753 || strCatalog == null)
\r
1755 row = tbl.NewRow();
\r
1757 row["CATALOG_NAME"] = rd.GetString(1);
\r
1758 row["DESCRIPTION"] = rd.GetString(2);
\r
1759 row["ID"] = rd.GetInt64(0);
\r
1761 tbl.Rows.Add(row);
\r
1766 tbl.AcceptChanges();
\r
1767 tbl.EndLoadData();
\r
1772 private DataTable Schema_DataTypes()
\r
1774 DataTable tbl = new DataTable("DataTypes");
\r
1776 tbl.Locale = CultureInfo.InvariantCulture;
\r
1777 tbl.Columns.Add("TypeName", typeof(String));
\r
1778 tbl.Columns.Add("ProviderDbType", typeof(int));
\r
1779 tbl.Columns.Add("ColumnSize", typeof(long));
\r
1780 tbl.Columns.Add("CreateFormat", typeof(String));
\r
1781 tbl.Columns.Add("CreateParameters", typeof(String));
\r
1782 tbl.Columns.Add("DataType", typeof(String));
\r
1783 tbl.Columns.Add("IsAutoIncrementable", typeof(bool));
\r
1784 tbl.Columns.Add("IsBestMatch", typeof(bool));
\r
1785 tbl.Columns.Add("IsCaseSensitive", typeof(bool));
\r
1786 tbl.Columns.Add("IsFixedLength", typeof(bool));
\r
1787 tbl.Columns.Add("IsFixedPrecisionScale", typeof(bool));
\r
1788 tbl.Columns.Add("IsLong", typeof(bool));
\r
1789 tbl.Columns.Add("IsNullable", typeof(bool));
\r
1790 tbl.Columns.Add("IsSearchable", typeof(bool));
\r
1791 tbl.Columns.Add("IsSearchableWithLike", typeof(bool));
\r
1792 tbl.Columns.Add("IsLiteralSupported", typeof(bool));
\r
1793 tbl.Columns.Add("LiteralPrefix", typeof(String));
\r
1794 tbl.Columns.Add("LiteralSuffix", typeof(String));
\r
1795 tbl.Columns.Add("IsUnsigned", typeof(bool));
\r
1796 tbl.Columns.Add("MaximumScale", typeof(short));
\r
1797 tbl.Columns.Add("MinimumScale", typeof(short));
\r
1798 tbl.Columns.Add("IsConcurrencyType", typeof(bool));
\r
1800 tbl.BeginLoadData();
\r
1802 StringReader reader = new StringReader(SR.DataTypes);
\r
1803 tbl.ReadXml(reader);
\r
1806 tbl.AcceptChanges();
\r
1807 tbl.EndLoadData();
\r
1813 /// Returns the base column information for indexes in a database
\r
1815 /// <param name="strCatalog">The catalog to retrieve indexes for (can be null)</param>
\r
1816 /// <param name="strTable">The table to restrict index information by (can be null)</param>
\r
1817 /// <param name="strIndex">The index to restrict index information by (can be null)</param>
\r
1818 /// <param name="strColumn">The source column to restrict index information by (can be null)</param>
\r
1819 /// <returns>A DataTable containing the results</returns>
\r
1820 private DataTable Schema_IndexColumns(string strCatalog, string strTable, string strIndex, string strColumn)
\r
1822 DataTable tbl = new DataTable("IndexColumns");
\r
1824 List<KeyValuePair<int, string>> primaryKeys = new List<KeyValuePair<int, string>>();
\r
1827 tbl.Locale = CultureInfo.InvariantCulture;
\r
1828 tbl.Columns.Add("CONSTRAINT_CATALOG", typeof(string));
\r
1829 tbl.Columns.Add("CONSTRAINT_SCHEMA", typeof(string));
\r
1830 tbl.Columns.Add("CONSTRAINT_NAME", typeof(string));
\r
1831 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1832 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1833 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1834 tbl.Columns.Add("COLUMN_NAME", typeof(string));
\r
1835 tbl.Columns.Add("ORDINAL_POSITION", typeof(int));
\r
1836 tbl.Columns.Add("INDEX_NAME", typeof(string));
\r
1837 tbl.Columns.Add("COLLATION_NAME", typeof(string));
\r
1838 tbl.Columns.Add("SORT_MODE", typeof(string));
\r
1839 tbl.Columns.Add("CONFLICT_OPTION", typeof(int));
\r
1841 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
1843 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
1845 tbl.BeginLoadData();
\r
1847 using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'table'", strCatalog, master), this))
\r
1848 using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
\r
1850 while (rdTables.Read())
\r
1852 maybeRowId = false;
\r
1853 primaryKeys.Clear();
\r
1854 if (String.IsNullOrEmpty(strTable) || String.Compare(rdTables.GetString(2), strTable, true, CultureInfo.InvariantCulture) == 0)
\r
1858 using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].table_info([{1}])", strCatalog, rdTables.GetString(2)), this))
\r
1859 using (SQLiteDataReader rdTable = cmdTable.ExecuteReader())
\r
1861 while (rdTable.Read())
\r
1863 if (rdTable.GetInt32(5) == 1) // is a primary key
\r
1865 primaryKeys.Add(new KeyValuePair<int, string>(rdTable.GetInt32(0), rdTable.GetString(1)));
\r
1866 // Is an integer -- could be a rowid if no other primary keys exist in the table
\r
1867 if (String.Compare(rdTable.GetString(2), "INTEGER", true, CultureInfo.InvariantCulture) == 0)
\r
1868 maybeRowId = true;
\r
1873 catch (SQLiteException)
\r
1876 // This is a rowid row
\r
1877 if (primaryKeys.Count == 1 && maybeRowId == true)
\r
1879 row = tbl.NewRow();
\r
1880 row["CONSTRAINT_CATALOG"] = strCatalog;
\r
1881 row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "{1}_PK_{0}", rdTables.GetString(2), master);
\r
1882 row["TABLE_CATALOG"] = strCatalog;
\r
1883 row["TABLE_NAME"] = rdTables.GetString(2);
\r
1884 row["COLUMN_NAME"] = primaryKeys[0].Value;
\r
1885 row["INDEX_NAME"] = row["CONSTRAINT_NAME"];
\r
1886 row["ORDINAL_POSITION"] = 0; // primaryKeys[0].Key;
\r
1887 row["COLLATION_NAME"] = "BINARY";
\r
1888 row["SORT_MODE"] = "ASC";
\r
1889 row["CONFLICT_OPTION"] = 2;
\r
1891 if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, (string)row["INDEX_NAME"], true, CultureInfo.InvariantCulture) == 0)
\r
1892 tbl.Rows.Add(row);
\r
1895 using (SQLiteCommand cmdIndexes = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{2}] WHERE [type] LIKE 'index' AND [tbl_name] LIKE '{1}'", strCatalog, rdTables.GetString(2).Replace("'", "''"), master), this))
\r
1896 using (SQLiteDataReader rdIndexes = cmdIndexes.ExecuteReader())
\r
1898 while (rdIndexes.Read())
\r
1901 if (String.IsNullOrEmpty(strIndex) || String.Compare(strIndex, rdIndexes.GetString(1), true, CultureInfo.InvariantCulture) == 0)
\r
1905 using (SQLiteCommand cmdIndex = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].index_info([{1}])", strCatalog, rdIndexes.GetString(1)), this))
\r
1906 using (SQLiteDataReader rdIndex = cmdIndex.ExecuteReader())
\r
1908 while (rdIndex.Read())
\r
1910 row = tbl.NewRow();
\r
1911 row["CONSTRAINT_CATALOG"] = strCatalog;
\r
1912 row["CONSTRAINT_NAME"] = rdIndexes.GetString(1);
\r
1913 row["TABLE_CATALOG"] = strCatalog;
\r
1914 row["TABLE_NAME"] = rdIndexes.GetString(2);
\r
1915 row["COLUMN_NAME"] = rdIndex.GetString(2);
\r
1916 row["INDEX_NAME"] = rdIndexes.GetString(1);
\r
1917 row["ORDINAL_POSITION"] = ordinal; // rdIndex.GetInt32(1);
\r
1919 string collationSequence;
\r
1922 _sql.GetIndexColumnExtendedInfo(strCatalog, rdIndexes.GetString(1), rdIndex.GetString(2), out sortMode, out onError, out collationSequence);
\r
1924 if (String.IsNullOrEmpty(collationSequence) == false)
\r
1925 row["COLLATION_NAME"] = collationSequence;
\r
1927 row["SORT_MODE"] = (sortMode == 0) ? "ASC" : "DESC";
\r
1928 row["CONFLICT_OPTION"] = onError;
\r
1932 if (String.IsNullOrEmpty(strColumn) || String.Compare(strColumn, row["COLUMN_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
\r
1933 tbl.Rows.Add(row);
\r
1937 catch (SQLiteException)
\r
1947 tbl.EndLoadData();
\r
1948 tbl.AcceptChanges();
\r
1954 /// Returns detailed column information for a specified view
\r
1956 /// <param name="strCatalog">The catalog to retrieve columns for (can be null)</param>
\r
1957 /// <param name="strView">The view to restrict column information by (can be null)</param>
\r
1958 /// <param name="strColumn">The source column to restrict column information by (can be null)</param>
\r
1959 /// <returns>A DataTable containing the results</returns>
\r
1960 private DataTable Schema_ViewColumns(string strCatalog, string strView, string strColumn)
\r
1962 DataTable tbl = new DataTable("ViewColumns");
\r
1966 DataRow schemaRow;
\r
1969 tbl.Locale = CultureInfo.InvariantCulture;
\r
1970 tbl.Columns.Add("VIEW_CATALOG", typeof(string));
\r
1971 tbl.Columns.Add("VIEW_SCHEMA", typeof(string));
\r
1972 tbl.Columns.Add("VIEW_NAME", typeof(string));
\r
1973 tbl.Columns.Add("VIEW_COLUMN_NAME", typeof(String));
\r
1974 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
1975 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
1976 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
1977 tbl.Columns.Add("COLUMN_NAME", typeof(string));
\r
1978 tbl.Columns.Add("ORDINAL_POSITION", typeof(int));
\r
1979 tbl.Columns.Add("COLUMN_HASDEFAULT", typeof(bool));
\r
1980 tbl.Columns.Add("COLUMN_DEFAULT", typeof(string));
\r
1981 tbl.Columns.Add("COLUMN_FLAGS", typeof(long));
\r
1982 tbl.Columns.Add("IS_NULLABLE", typeof(bool));
\r
1983 tbl.Columns.Add("DATA_TYPE", typeof(string));
\r
1984 tbl.Columns.Add("CHARACTER_MAXIMUM_LENGTH", typeof(int));
\r
1985 tbl.Columns.Add("NUMERIC_PRECISION", typeof(int));
\r
1986 tbl.Columns.Add("NUMERIC_SCALE", typeof(int));
\r
1987 tbl.Columns.Add("DATETIME_PRECISION", typeof(long));
\r
1988 tbl.Columns.Add("CHARACTER_SET_CATALOG", typeof(string));
\r
1989 tbl.Columns.Add("CHARACTER_SET_SCHEMA", typeof(string));
\r
1990 tbl.Columns.Add("CHARACTER_SET_NAME", typeof(string));
\r
1991 tbl.Columns.Add("COLLATION_CATALOG", typeof(string));
\r
1992 tbl.Columns.Add("COLLATION_SCHEMA", typeof(string));
\r
1993 tbl.Columns.Add("COLLATION_NAME", typeof(string));
\r
1994 tbl.Columns.Add("PRIMARY_KEY", typeof(bool));
\r
1995 tbl.Columns.Add("EDM_TYPE", typeof(string));
\r
1996 tbl.Columns.Add("AUTOINCREMENT", typeof(bool));
\r
1997 tbl.Columns.Add("UNIQUE", typeof(bool));
\r
1999 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
2001 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
2003 tbl.BeginLoadData();
\r
2005 using (SQLiteCommand cmdViews = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'view'", strCatalog, master), this))
\r
2006 using (SQLiteDataReader rdViews = cmdViews.ExecuteReader())
\r
2008 while (rdViews.Read())
\r
2010 if (String.IsNullOrEmpty(strView) || String.Compare(strView, rdViews.GetString(2), true, CultureInfo.InvariantCulture) == 0)
\r
2012 using (SQLiteCommand cmdViewSelect = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdViews.GetString(2)), this))
\r
2014 strSql = rdViews.GetString(4).Replace('\r', ' ').Replace('\n', ' ').Replace('\t', ' ');
\r
2015 n = CultureInfo.InvariantCulture.CompareInfo.IndexOf(strSql, " AS ", CompareOptions.IgnoreCase);
\r
2019 strSql = strSql.Substring(n + 4);
\r
2021 using (SQLiteCommand cmd = new SQLiteCommand(strSql, this))
\r
2022 using (SQLiteDataReader rdViewSelect = cmdViewSelect.ExecuteReader(CommandBehavior.SchemaOnly))
\r
2023 using (SQLiteDataReader rd = (SQLiteDataReader)cmd.ExecuteReader(CommandBehavior.SchemaOnly))
\r
2024 using (DataTable tblSchemaView = rdViewSelect.GetSchemaTable(false, false))
\r
2025 using (DataTable tblSchema = rd.GetSchemaTable(false, false))
\r
2027 for (n = 0; n < tblSchema.Rows.Count; n++)
\r
2029 viewRow = tblSchemaView.Rows[n];
\r
2030 schemaRow = tblSchema.Rows[n];
\r
2032 if (String.Compare(viewRow[SchemaTableColumn.ColumnName].ToString(), strColumn, true, CultureInfo.InvariantCulture) == 0
\r
2033 || strColumn == null)
\r
2035 row = tbl.NewRow();
\r
2037 row["VIEW_CATALOG"] = strCatalog;
\r
2038 row["VIEW_NAME"] = rdViews.GetString(2);
\r
2039 row["TABLE_CATALOG"] = strCatalog;
\r
2040 row["TABLE_SCHEMA"] = schemaRow[SchemaTableColumn.BaseSchemaName];
\r
2041 row["TABLE_NAME"] = schemaRow[SchemaTableColumn.BaseTableName];
\r
2042 row["COLUMN_NAME"] = schemaRow[SchemaTableColumn.BaseColumnName];
\r
2043 row["VIEW_COLUMN_NAME"] = viewRow[SchemaTableColumn.ColumnName];
\r
2044 row["COLUMN_HASDEFAULT"] = (viewRow[SchemaTableOptionalColumn.DefaultValue] != DBNull.Value);
\r
2045 row["COLUMN_DEFAULT"] = viewRow[SchemaTableOptionalColumn.DefaultValue];
\r
2046 row["ORDINAL_POSITION"] = viewRow[SchemaTableColumn.ColumnOrdinal];
\r
2047 row["IS_NULLABLE"] = viewRow[SchemaTableColumn.AllowDBNull];
\r
2048 row["DATA_TYPE"] = viewRow["DataTypeName"]; // SQLiteConvert.DbTypeToType((DbType)viewRow[SchemaTableColumn.ProviderType]).ToString();
\r
2049 row["EDM_TYPE"] = SQLiteConvert.DbTypeToTypeName((DbType)viewRow[SchemaTableColumn.ProviderType]).ToString().ToLower(CultureInfo.InvariantCulture);
\r
2050 row["CHARACTER_MAXIMUM_LENGTH"] = viewRow[SchemaTableColumn.ColumnSize];
\r
2051 row["TABLE_SCHEMA"] = viewRow[SchemaTableColumn.BaseSchemaName];
\r
2052 row["PRIMARY_KEY"] = viewRow[SchemaTableColumn.IsKey];
\r
2053 row["AUTOINCREMENT"] = viewRow[SchemaTableOptionalColumn.IsAutoIncrement];
\r
2054 row["COLLATION_NAME"] = viewRow["CollationType"];
\r
2055 row["UNIQUE"] = viewRow[SchemaTableColumn.IsUnique];
\r
2056 tbl.Rows.Add(row);
\r
2065 tbl.EndLoadData();
\r
2066 tbl.AcceptChanges();
\r
2072 /// Retrieves foreign key information from the specified set of filters
\r
2074 /// <param name="strCatalog">An optional catalog to restrict results on</param>
\r
2075 /// <param name="strTable">An optional table to restrict results on</param>
\r
2076 /// <param name="strKeyName">An optional foreign key name to restrict results on</param>
\r
2077 /// <returns>A DataTable with the results of the query</returns>
\r
2078 private DataTable Schema_ForeignKeys(string strCatalog, string strTable, string strKeyName)
\r
2080 DataTable tbl = new DataTable("ForeignKeys");
\r
2083 tbl.Locale = CultureInfo.InvariantCulture;
\r
2084 tbl.Columns.Add("CONSTRAINT_CATALOG", typeof(string));
\r
2085 tbl.Columns.Add("CONSTRAINT_SCHEMA", typeof(string));
\r
2086 tbl.Columns.Add("CONSTRAINT_NAME", typeof(string));
\r
2087 tbl.Columns.Add("TABLE_CATALOG", typeof(string));
\r
2088 tbl.Columns.Add("TABLE_SCHEMA", typeof(string));
\r
2089 tbl.Columns.Add("TABLE_NAME", typeof(string));
\r
2090 tbl.Columns.Add("CONSTRAINT_TYPE", typeof(string));
\r
2091 tbl.Columns.Add("IS_DEFERRABLE", typeof(bool));
\r
2092 tbl.Columns.Add("INITIALLY_DEFERRED", typeof(bool));
\r
2093 tbl.Columns.Add("FKEY_FROM_COLUMN", typeof(string));
\r
2094 tbl.Columns.Add("FKEY_FROM_ORDINAL_POSITION", typeof(int));
\r
2095 tbl.Columns.Add("FKEY_TO_CATALOG", typeof(string));
\r
2096 tbl.Columns.Add("FKEY_TO_SCHEMA", typeof(string));
\r
2097 tbl.Columns.Add("FKEY_TO_TABLE", typeof(string));
\r
2098 tbl.Columns.Add("FKEY_TO_COLUMN", typeof(string));
\r
2100 if (String.IsNullOrEmpty(strCatalog)) strCatalog = "main";
\r
2102 string master = (String.Compare(strCatalog, "temp", true, CultureInfo.InvariantCulture) == 0) ? _tempmasterdb : _masterdb;
\r
2104 tbl.BeginLoadData();
\r
2106 using (SQLiteCommand cmdTables = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}] WHERE [type] LIKE 'table'", strCatalog, master), this))
\r
2107 using (SQLiteDataReader rdTables = cmdTables.ExecuteReader())
\r
2109 while (rdTables.Read())
\r
2111 if (String.IsNullOrEmpty(strTable) || String.Compare(strTable, rdTables.GetString(2), true, CultureInfo.InvariantCulture) == 0)
\r
2115 using (SQLiteCommandBuilder builder = new SQLiteCommandBuilder())
\r
2116 //using (SQLiteCommand cmdTable = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "SELECT * FROM [{0}].[{1}]", strCatalog, rdTables.GetString(2)), this))
\r
2117 //using (SQLiteDataReader rdTable = cmdTable.ExecuteReader(CommandBehavior.SchemaOnly))
\r
2118 using (SQLiteCommand cmdKey = new SQLiteCommand(String.Format(CultureInfo.InvariantCulture, "PRAGMA [{0}].foreign_key_list([{1}])", strCatalog, rdTables.GetString(2)), this))
\r
2119 using (SQLiteDataReader rdKey = cmdKey.ExecuteReader())
\r
2121 while (rdKey.Read())
\r
2123 row = tbl.NewRow();
\r
2124 row["CONSTRAINT_CATALOG"] = strCatalog;
\r
2125 row["CONSTRAINT_NAME"] = String.Format(CultureInfo.InvariantCulture, "FK_{0}_{1}", rdTables[2], rdKey.GetInt32(0));
\r
2126 row["TABLE_CATALOG"] = strCatalog;
\r
2127 row["TABLE_NAME"] = builder.UnquoteIdentifier(rdTables.GetString(2));
\r
2128 row["CONSTRAINT_TYPE"] = "FOREIGN KEY";
\r
2129 row["IS_DEFERRABLE"] = false;
\r
2130 row["INITIALLY_DEFERRED"] = false;
\r
2131 row["FKEY_FROM_COLUMN"] = builder.UnquoteIdentifier(rdKey[3].ToString());
\r
2132 row["FKEY_TO_CATALOG"] = strCatalog;
\r
2133 row["FKEY_TO_TABLE"] = builder.UnquoteIdentifier(rdKey[2].ToString());
\r
2134 row["FKEY_TO_COLUMN"] = builder.UnquoteIdentifier(rdKey[4].ToString());
\r
2135 row["FKEY_FROM_ORDINAL_POSITION"] = rdKey[1];
\r
2137 if (String.IsNullOrEmpty(strKeyName) || String.Compare(strKeyName, row["CONSTRAINT_NAME"].ToString(), true, CultureInfo.InvariantCulture) == 0)
\r
2138 tbl.Rows.Add(row);
\r
2142 catch (SQLiteException)
\r
2149 tbl.EndLoadData();
\r
2150 tbl.AcceptChanges();
\r
2156 /// This event is raised whenever SQLite makes an update/delete/insert into the database on
\r
2157 /// this connection. It only applies to the given connection.
\r
2159 public event SQLiteUpdateEventHandler Update
\r
2163 if (_updateHandler == null)
\r
2165 _updateCallback = new SQLiteUpdateCallback(UpdateCallback);
\r
2166 if (_sql != null) _sql.SetUpdateHook(_updateCallback);
\r
2168 _updateHandler += value;
\r
2172 _updateHandler -= value;
\r
2173 if (_updateHandler == null)
\r
2175 if (_sql != null) _sql.SetUpdateHook(null);
\r
2176 _updateCallback = null;
\r
2181 private void UpdateCallback(IntPtr puser, int type, IntPtr database, IntPtr table, Int64 rowid)
\r
2183 _updateHandler(this, new UpdateEventArgs(
\r
2184 SQLiteBase.UTF8ToString(database, -1),
\r
2185 SQLiteBase.UTF8ToString(table, -1),
\r
2186 (UpdateEventType)type,
\r
2191 /// This event is raised whenever SQLite is committing a transaction.
\r
2192 /// Return non-zero to trigger a rollback
\r
2194 public event SQLiteCommitHandler Commit
\r
2198 if (_commitHandler == null)
\r
2200 _commitCallback = new SQLiteCommitCallback(CommitCallback);
\r
2201 if (_sql != null) _sql.SetCommitHook(_commitCallback);
\r
2203 _commitHandler += value;
\r
2207 _commitHandler -= value;
\r
2208 if (_commitHandler == null)
\r
2210 if (_sql != null) _sql.SetCommitHook(null);
\r
2211 _commitCallback = null;
\r
2217 /// This event is raised whenever SQLite is committing a transaction.
\r
2218 /// Return non-zero to trigger a rollback
\r
2220 public event EventHandler RollBack
\r
2224 if (_rollbackHandler == null)
\r
2226 _rollbackCallback = new SQLiteRollbackCallback(RollbackCallback);
\r
2227 if (_sql != null) _sql.SetRollbackHook(_rollbackCallback);
\r
2229 _rollbackHandler += value;
\r
2233 _rollbackHandler -= value;
\r
2234 if (_rollbackHandler == null)
\r
2236 if (_sql != null) _sql.SetRollbackHook(null);
\r
2237 _rollbackCallback = null;
\r
2243 private int CommitCallback(IntPtr parg)
\r
2245 CommitEventArgs e = new CommitEventArgs();
\r
2246 _commitHandler(this, e);
\r
2247 return (e.AbortTransaction == true) ? 1 : 0;
\r
2250 private void RollbackCallback(IntPtr parg)
\r
2252 _rollbackHandler(this, EventArgs.Empty);
\r
2257 /// The I/O file cache flushing behavior for the connection
\r
2259 public enum SynchronizationModes
\r
2262 /// Normal file flushing at critical sections of the code
\r
2266 /// Full file flushing after every write operation
\r
2270 /// Use the default operating system's file flushing, SQLite does not explicitly flush the file buffers after writing
\r
2275 #if !PLATFORM_COMPACTFRAMEWORK
\r
2276 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
\r
2278 internal delegate void SQLiteUpdateCallback(IntPtr puser, int type, IntPtr database, IntPtr table, Int64 rowid);
\r
2279 #if !PLATFORM_COMPACTFRAMEWORK
\r
2280 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
\r
2282 internal delegate int SQLiteCommitCallback(IntPtr puser);
\r
2283 #if !PLATFORM_COMPACTFRAMEWORK
\r
2284 [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
\r
2286 internal delegate void SQLiteRollbackCallback(IntPtr puser);
\r
2289 /// Raised when a transaction is about to be committed. To roll back a transaction, set the
\r
2290 /// rollbackTrans boolean value to true.
\r
2292 /// <param name="sender">The connection committing the transaction</param>
\r
2293 /// <param name="e">Event arguments on the transaction</param>
\r
2294 public delegate void SQLiteCommitHandler(object sender, CommitEventArgs e);
\r
2297 /// Raised when data is inserted, updated and deleted on a given connection
\r
2299 /// <param name="sender">The connection committing the transaction</param>
\r
2300 /// <param name="e">The event parameters which triggered the event</param>
\r
2301 public delegate void SQLiteUpdateEventHandler(object sender, UpdateEventArgs e);
\r
2304 /// Whenever an update event is triggered on a connection, this enum will indicate
\r
2305 /// exactly what type of operation is being performed.
\r
2307 public enum UpdateEventType
\r
2310 /// A row is being deleted from the given database and table
\r
2314 /// A row is being inserted into the table.
\r
2318 /// A row is being updated in the table.
\r
2324 /// Passed during an Update callback, these event arguments detail the type of update operation being performed
\r
2325 /// on the given connection.
\r
2327 public class UpdateEventArgs : EventArgs
\r
2330 /// The name of the database being updated (usually "main" but can be any attached or temporary database)
\r
2332 public readonly string Database;
\r
2335 /// The name of the table being updated
\r
2337 public readonly string Table;
\r
2340 /// The type of update being performed (insert/update/delete)
\r
2342 public readonly UpdateEventType Event;
\r
2345 /// The RowId affected by this update.
\r
2347 public readonly Int64 RowId;
\r
2349 internal UpdateEventArgs(string database, string table, UpdateEventType eventType, Int64 rowid)
\r
2351 Database = database;
\r
2353 Event = eventType;
\r
2359 /// Event arguments raised when a transaction is being committed
\r
2361 public class CommitEventArgs : EventArgs
\r
2363 internal CommitEventArgs()
\r
2368 /// Set to true to abort the transaction and trigger a rollback
\r
2370 public bool AbortTransaction;
\r