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Diffstat (limited to 'src/dtf/WixToolset.Dtf.WindowsInstaller/DatabaseQuery.cs')
| -rw-r--r-- | src/dtf/WixToolset.Dtf.WindowsInstaller/DatabaseQuery.cs | 412 |
1 files changed, 412 insertions, 0 deletions
diff --git a/src/dtf/WixToolset.Dtf.WindowsInstaller/DatabaseQuery.cs b/src/dtf/WixToolset.Dtf.WindowsInstaller/DatabaseQuery.cs new file mode 100644 index 00000000..7c9e011e --- /dev/null +++ b/src/dtf/WixToolset.Dtf.WindowsInstaller/DatabaseQuery.cs | |||
| @@ -0,0 +1,412 @@ | |||
| 1 | // Copyright (c) .NET Foundation and contributors. All rights reserved. Licensed under the Microsoft Reciprocal License. See LICENSE.TXT file in the project root for full license information. | ||
| 2 | |||
| 3 | namespace WixToolset.Dtf.WindowsInstaller | ||
| 4 | { | ||
| 5 | using System; | ||
| 6 | using System.Collections; | ||
| 7 | using System.Collections.Generic; | ||
| 8 | using System.Globalization; | ||
| 9 | using System.Diagnostics.CodeAnalysis; | ||
| 10 | |||
| 11 | public partial class Database | ||
| 12 | { | ||
| 13 | /// <summary> | ||
| 14 | /// Gets a View object representing the query specified by a SQL string. | ||
| 15 | /// </summary> | ||
| 16 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 17 | /// <param name="args">Zero or more objects to format</param> | ||
| 18 | /// <returns>A View object representing the query specified by a SQL string</returns> | ||
| 19 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 20 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 21 | /// <remarks><p> | ||
| 22 | /// The <paramref name="sqlFormat"/> parameter is formatted using <see cref="String.Format(string,object[])"/>. | ||
| 23 | /// </p><p> | ||
| 24 | /// The View object should be <see cref="InstallerHandle.Close"/>d after use. | ||
| 25 | /// It is best that the handle be closed manually as soon as it is no longer | ||
| 26 | /// needed, as leaving lots of unused handles open can degrade performance. | ||
| 27 | /// </p><p> | ||
| 28 | /// Win32 MSI API: | ||
| 29 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a> | ||
| 30 | /// </p></remarks> | ||
| 31 | public View OpenView(string sqlFormat, params object[] args) | ||
| 32 | { | ||
| 33 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 34 | { | ||
| 35 | throw new ArgumentNullException("sqlFormat"); | ||
| 36 | } | ||
| 37 | |||
| 38 | string sql = (args == null || args.Length == 0 ? sqlFormat : | ||
| 39 | String.Format(CultureInfo.InvariantCulture, sqlFormat, args)); | ||
| 40 | int viewHandle; | ||
| 41 | uint ret = RemotableNativeMethods.MsiDatabaseOpenView((int) this.Handle, sql, out viewHandle); | ||
| 42 | if (ret != 0) | ||
| 43 | { | ||
| 44 | throw InstallerException.ExceptionFromReturnCode(ret); | ||
| 45 | } | ||
| 46 | |||
| 47 | return new View((IntPtr) viewHandle, sql, this); | ||
| 48 | } | ||
| 49 | |||
| 50 | /// <summary> | ||
| 51 | /// Executes the query specified by a SQL string. The query may not be a SELECT statement. | ||
| 52 | /// </summary> | ||
| 53 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 54 | /// <param name="args">Zero or more objects to format</param> | ||
| 55 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 56 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 57 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 58 | /// <remarks><p> | ||
| 59 | /// The <paramref name="sqlFormat"/> parameter is formatted using | ||
| 60 | /// <see cref="String.Format(string,object[])"/>. | ||
| 61 | /// </p><p> | ||
| 62 | /// Win32 MSI APIs: | ||
| 63 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 64 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a> | ||
| 65 | /// </p></remarks> | ||
| 66 | public void Execute(string sqlFormat, params object[] args) | ||
| 67 | { | ||
| 68 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 69 | { | ||
| 70 | throw new ArgumentNullException("sqlFormat"); | ||
| 71 | } | ||
| 72 | |||
| 73 | this.Execute( | ||
| 74 | args == null || args.Length == 0 ? | ||
| 75 | sqlFormat : String.Format(CultureInfo.InvariantCulture, sqlFormat, args), | ||
| 76 | (Record) null); | ||
| 77 | } | ||
| 78 | |||
| 79 | /// <summary> | ||
| 80 | /// Executes the query specified by a SQL string. The query may not be a SELECT statement. | ||
| 81 | /// </summary> | ||
| 82 | /// <param name="sql">SQL query string</param> | ||
| 83 | /// <param name="record">Optional Record object containing the values that replace | ||
| 84 | /// the parameter tokens (?) in the SQL query.</param> | ||
| 85 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 86 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 87 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 88 | /// <remarks><p> | ||
| 89 | /// Win32 MSI APIs: | ||
| 90 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 91 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a> | ||
| 92 | /// </p></remarks> | ||
| 93 | public void Execute(string sql, Record record) | ||
| 94 | { | ||
| 95 | if (String.IsNullOrEmpty(sql)) | ||
| 96 | { | ||
| 97 | throw new ArgumentNullException("sql"); | ||
| 98 | } | ||
| 99 | |||
| 100 | using (View view = this.OpenView(sql)) | ||
| 101 | { | ||
| 102 | view.Execute(record); | ||
| 103 | } | ||
| 104 | } | ||
| 105 | |||
| 106 | /// <summary> | ||
| 107 | /// Executes the specified SQL SELECT query and returns all results. | ||
| 108 | /// </summary> | ||
| 109 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 110 | /// <param name="args">Zero or more objects to format</param> | ||
| 111 | /// <returns>All results combined into an array</returns> | ||
| 112 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 113 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 114 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 115 | /// <remarks><p> | ||
| 116 | /// The <paramref name="sqlFormat"/> parameter is formatted using | ||
| 117 | /// <see cref="String.Format(string,object[])"/>. | ||
| 118 | /// </p><p> | ||
| 119 | /// Multiple rows columns will be collapsed into a single one-dimensional list. | ||
| 120 | /// </p><p> | ||
| 121 | /// Win32 MSI APIs: | ||
| 122 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 123 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 124 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 125 | /// </p></remarks> | ||
| 126 | public IList ExecuteQuery(string sqlFormat, params object[] args) | ||
| 127 | { | ||
| 128 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 129 | { | ||
| 130 | throw new ArgumentNullException("sqlFormat"); | ||
| 131 | } | ||
| 132 | |||
| 133 | return this.ExecuteQuery( | ||
| 134 | args == null || args.Length == 0 ? | ||
| 135 | sqlFormat : String.Format(CultureInfo.InvariantCulture, sqlFormat, args), | ||
| 136 | (Record) null); | ||
| 137 | } | ||
| 138 | |||
| 139 | /// <summary> | ||
| 140 | /// Executes the specified SQL SELECT query and returns all results. | ||
| 141 | /// </summary> | ||
| 142 | /// <param name="sql">SQL SELECT query string</param> | ||
| 143 | /// <param name="record">Optional Record object containing the values that replace | ||
| 144 | /// the parameter tokens (?) in the SQL query.</param> | ||
| 145 | /// <returns>All results combined into an array</returns> | ||
| 146 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 147 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 148 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 149 | /// <remarks><p> | ||
| 150 | /// Multiple rows columns will be collapsed into a single one-dimensional list. | ||
| 151 | /// </p><p> | ||
| 152 | /// Win32 MSI APIs: | ||
| 153 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 154 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 155 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 156 | /// </p></remarks> | ||
| 157 | public IList ExecuteQuery(string sql, Record record) | ||
| 158 | { | ||
| 159 | if (String.IsNullOrEmpty(sql)) | ||
| 160 | { | ||
| 161 | throw new ArgumentNullException("sql"); | ||
| 162 | } | ||
| 163 | |||
| 164 | using (View view = this.OpenView(sql)) | ||
| 165 | { | ||
| 166 | view.Execute(record); | ||
| 167 | IList results = new ArrayList(); | ||
| 168 | int fieldCount = 0; | ||
| 169 | |||
| 170 | foreach (Record rec in view) using (rec) | ||
| 171 | { | ||
| 172 | if (fieldCount == 0) fieldCount = rec.FieldCount; | ||
| 173 | for (int i = 1; i <= fieldCount; i++) | ||
| 174 | { | ||
| 175 | results.Add(rec[i]); | ||
| 176 | } | ||
| 177 | } | ||
| 178 | |||
| 179 | return results; | ||
| 180 | } | ||
| 181 | } | ||
| 182 | |||
| 183 | /// <summary> | ||
| 184 | /// Executes the specified SQL SELECT query and returns all results as integers. | ||
| 185 | /// </summary> | ||
| 186 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 187 | /// <param name="args">Zero or more objects to format</param> | ||
| 188 | /// <returns>All results combined into an array</returns> | ||
| 189 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 190 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 191 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 192 | /// <remarks><p> | ||
| 193 | /// The <paramref name="sqlFormat"/> parameter is formatted using | ||
| 194 | /// <see cref="String.Format(string,object[])"/>. | ||
| 195 | /// </p><p> | ||
| 196 | /// Multiple rows columns will be collapsed into a single one-dimensional list. | ||
| 197 | /// </p><p> | ||
| 198 | /// Win32 MSI APIs: | ||
| 199 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 200 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 201 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 202 | /// </p></remarks> | ||
| 203 | public IList<int> ExecuteIntegerQuery(string sqlFormat, params object[] args) | ||
| 204 | { | ||
| 205 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 206 | { | ||
| 207 | throw new ArgumentNullException("sqlFormat"); | ||
| 208 | } | ||
| 209 | |||
| 210 | return this.ExecuteIntegerQuery( | ||
| 211 | args == null || args.Length == 0 ? | ||
| 212 | sqlFormat : String.Format(CultureInfo.InvariantCulture, sqlFormat, args), | ||
| 213 | (Record) null); | ||
| 214 | } | ||
| 215 | |||
| 216 | /// <summary> | ||
| 217 | /// Executes the specified SQL SELECT query and returns all results as integers. | ||
| 218 | /// </summary> | ||
| 219 | /// <param name="sql">SQL SELECT query string</param> | ||
| 220 | /// <param name="record">Optional Record object containing the values that replace | ||
| 221 | /// the parameter tokens (?) in the SQL query.</param> | ||
| 222 | /// <returns>All results combined into an array</returns> | ||
| 223 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 224 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 225 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 226 | /// <remarks><p> | ||
| 227 | /// Multiple rows columns will be collapsed into a single one-dimensional list. | ||
| 228 | /// </p><p> | ||
| 229 | /// Win32 MSI APIs: | ||
| 230 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 231 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 232 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 233 | /// </p></remarks> | ||
| 234 | public IList<int> ExecuteIntegerQuery(string sql, Record record) | ||
| 235 | { | ||
| 236 | if (String.IsNullOrEmpty(sql)) | ||
| 237 | { | ||
| 238 | throw new ArgumentNullException("sql"); | ||
| 239 | } | ||
| 240 | |||
| 241 | using (View view = this.OpenView(sql)) | ||
| 242 | { | ||
| 243 | view.Execute(record); | ||
| 244 | IList<int> results = new List<int>(); | ||
| 245 | int fieldCount = 0; | ||
| 246 | |||
| 247 | foreach (Record rec in view) using (rec) | ||
| 248 | { | ||
| 249 | if (fieldCount == 0) fieldCount = rec.FieldCount; | ||
| 250 | for (int i = 1; i <= fieldCount; i++) | ||
| 251 | { | ||
| 252 | results.Add(rec.GetInteger(i)); | ||
| 253 | } | ||
| 254 | } | ||
| 255 | |||
| 256 | return results; | ||
| 257 | } | ||
| 258 | } | ||
| 259 | |||
| 260 | /// <summary> | ||
| 261 | /// Executes the specified SQL SELECT query and returns all results as strings. | ||
| 262 | /// </summary> | ||
| 263 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 264 | /// <param name="args">Zero or more objects to format</param> | ||
| 265 | /// <returns>All results combined into an array</returns> | ||
| 266 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 267 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 268 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 269 | /// <remarks><p> | ||
| 270 | /// The <paramref name="sqlFormat"/> parameter is formatted using | ||
| 271 | /// <see cref="String.Format(string,object[])"/>. | ||
| 272 | /// </p><p> | ||
| 273 | /// Multiple rows columns will be collapsed into a single on-dimensional list. | ||
| 274 | /// </p><p> | ||
| 275 | /// Win32 MSI APIs: | ||
| 276 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 277 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 278 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 279 | /// </p></remarks> | ||
| 280 | public IList<string> ExecuteStringQuery(string sqlFormat, params object[] args) | ||
| 281 | { | ||
| 282 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 283 | { | ||
| 284 | throw new ArgumentNullException("sqlFormat"); | ||
| 285 | } | ||
| 286 | |||
| 287 | return this.ExecuteStringQuery( | ||
| 288 | args == null || args.Length == 0 ? | ||
| 289 | sqlFormat : String.Format(CultureInfo.InvariantCulture, sqlFormat, args), | ||
| 290 | (Record) null); | ||
| 291 | } | ||
| 292 | |||
| 293 | /// <summary> | ||
| 294 | /// Executes the specified SQL SELECT query and returns all results as strings. | ||
| 295 | /// </summary> | ||
| 296 | /// <param name="sql">SQL SELECT query string</param> | ||
| 297 | /// <param name="record">Optional Record object containing the values that replace | ||
| 298 | /// the parameter tokens (?) in the SQL query.</param> | ||
| 299 | /// <returns>All results combined into an array</returns> | ||
| 300 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 301 | /// <exception cref="InstallerException">the View could not be executed</exception> | ||
| 302 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 303 | /// <remarks><p> | ||
| 304 | /// Multiple rows columns will be collapsed into a single on-dimensional list. | ||
| 305 | /// </p><p> | ||
| 306 | /// Win32 MSI APIs: | ||
| 307 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 308 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 309 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 310 | /// </p></remarks> | ||
| 311 | public IList<string> ExecuteStringQuery(string sql, Record record) | ||
| 312 | { | ||
| 313 | if (String.IsNullOrEmpty(sql)) | ||
| 314 | { | ||
| 315 | throw new ArgumentNullException("sql"); | ||
| 316 | } | ||
| 317 | |||
| 318 | using (View view = this.OpenView(sql)) | ||
| 319 | { | ||
| 320 | view.Execute(record); | ||
| 321 | IList<string> results = new List<string>(); | ||
| 322 | int fieldCount = 0; | ||
| 323 | |||
| 324 | foreach (Record rec in view) using (rec) | ||
| 325 | { | ||
| 326 | if (fieldCount == 0) fieldCount = rec.FieldCount; | ||
| 327 | for (int i = 1; i <= fieldCount; i++) | ||
| 328 | { | ||
| 329 | results.Add(rec.GetString(i)); | ||
| 330 | } | ||
| 331 | } | ||
| 332 | |||
| 333 | return results; | ||
| 334 | } | ||
| 335 | } | ||
| 336 | |||
| 337 | /// <summary> | ||
| 338 | /// Executes the specified SQL SELECT query and returns a single result. | ||
| 339 | /// </summary> | ||
| 340 | /// <param name="sqlFormat">SQL query string, which may contain format items</param> | ||
| 341 | /// <param name="args">Zero or more objects to format</param> | ||
| 342 | /// <returns>First field of the first result</returns> | ||
| 343 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 344 | /// <exception cref="InstallerException">the View could not be executed | ||
| 345 | /// or the query returned 0 results</exception> | ||
| 346 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 347 | /// <remarks><p> | ||
| 348 | /// The <paramref name="sqlFormat"/> parameter is formatted using | ||
| 349 | /// <see cref="String.Format(string,object[])"/>. | ||
| 350 | /// </p><p> | ||
| 351 | /// Win32 MSI APIs: | ||
| 352 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 353 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 354 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 355 | /// </p></remarks> | ||
| 356 | public object ExecuteScalar(string sqlFormat, params object[] args) | ||
| 357 | { | ||
| 358 | if (String.IsNullOrEmpty(sqlFormat)) | ||
| 359 | { | ||
| 360 | throw new ArgumentNullException("sqlFormat"); | ||
| 361 | } | ||
| 362 | |||
| 363 | return this.ExecuteScalar( | ||
| 364 | args == null || args.Length == 0 ? | ||
| 365 | sqlFormat : String.Format(CultureInfo.InvariantCulture, sqlFormat, args), | ||
| 366 | (Record) null); | ||
| 367 | } | ||
| 368 | |||
| 369 | /// <summary> | ||
| 370 | /// Executes the specified SQL SELECT query and returns a single result. | ||
| 371 | /// </summary> | ||
| 372 | /// <param name="sql">SQL SELECT query string</param> | ||
| 373 | /// <param name="record">Optional Record object containing the values that replace | ||
| 374 | /// the parameter tokens (?) in the SQL query.</param> | ||
| 375 | /// <returns>First field of the first result</returns> | ||
| 376 | /// <exception cref="BadQuerySyntaxException">the SQL syntax is invalid</exception> | ||
| 377 | /// <exception cref="InstallerException">the View could not be executed | ||
| 378 | /// or the query returned 0 results</exception> | ||
| 379 | /// <exception cref="InvalidHandleException">the Database handle is invalid</exception> | ||
| 380 | /// <remarks><p> | ||
| 381 | /// Win32 MSI APIs: | ||
| 382 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msidatabaseopenview.asp">MsiDatabaseOpenView</a>, | ||
| 383 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewexecute.asp">MsiViewExecute</a>, | ||
| 384 | /// <a href="http://msdn.microsoft.com/library/en-us/msi/setup/msiviewfetch.asp">MsiViewFetch</a> | ||
| 385 | /// </p></remarks> | ||
| 386 | public object ExecuteScalar(string sql, Record record) | ||
| 387 | { | ||
| 388 | if (String.IsNullOrEmpty(sql)) | ||
| 389 | { | ||
| 390 | throw new ArgumentNullException("sql"); | ||
| 391 | } | ||
| 392 | |||
| 393 | View view = this.OpenView(sql); | ||
| 394 | Record rec = null; | ||
| 395 | try | ||
| 396 | { | ||
| 397 | view.Execute(record); | ||
| 398 | rec = view.Fetch(); | ||
| 399 | if (rec == null) | ||
| 400 | { | ||
| 401 | throw InstallerException.ExceptionFromReturnCode((uint) NativeMethods.Error.NO_MORE_ITEMS); | ||
| 402 | } | ||
| 403 | return rec[1]; | ||
| 404 | } | ||
| 405 | finally | ||
| 406 | { | ||
| 407 | if (rec != null) rec.Close(); | ||
| 408 | view.Close(); | ||
| 409 | } | ||
| 410 | } | ||
| 411 | } | ||
| 412 | } | ||
