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Overview
Comment: | Support the colUsed field to the sqlite3_index_info structure passed to virtual table xBestIndex methods. |
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Downloads: | Tarball | ZIP archive |
Timelines: | family | ancestors | descendants | both | trunk |
Files: | files | file ages | folders |
SHA1: |
5e37af01d9aceb5ae202c93af09e805e |
User & Date: | mistachkin 2015-12-02 05:34:41.827 |
Context
2015-12-02
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05:40 | Be sure to increment the structure offset to account for optional sqlite3_index_info members. check-in: 189db19efc user: mistachkin tags: trunk | |
05:34 | Support the colUsed field to the sqlite3_index_info structure passed to virtual table xBestIndex methods. check-in: 5e37af01d9 user: mistachkin tags: trunk | |
2015-12-01
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19:03 | Update the MSVCRT runtimes for VS 2015 in externals to 'Update 1'. check-in: 7866eaefcc user: mistachkin tags: trunk | |
Changes
Changes to System.Data.SQLite/SQLiteModule.cs.
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1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 | return true; return false; } /////////////////////////////////////////////////////////////////////// #region Public Properties private SQLiteIndexConstraintUsage[] constraintUsages; /// <summary> /// An array of <see cref="SQLiteIndexConstraintUsage" /> object /// instances, each containing information to be supplied to the SQLite /// core library. /// </summary> | > > > > > > > > > > > > > > > > > > | 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 1072 1073 1074 1075 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 | return true; return false; } /////////////////////////////////////////////////////////////////////// /// <summary> /// Determines if the native flags field can be used, based on the /// available version of the SQLite core library. /// </summary> /// <returns> /// Non-zero if the <see cref="ColUsed" /> property is supported by /// the SQLite core library. /// </returns> public bool CanUseColUsed() { if (UnsafeNativeMethods.sqlite3_libversion_number() >= 3010000) return true; return false; } /////////////////////////////////////////////////////////////////////// #region Public Properties private SQLiteIndexConstraintUsage[] constraintUsages; /// <summary> /// An array of <see cref="SQLiteIndexConstraintUsage" /> object /// instances, each containing information to be supplied to the SQLite /// core library. /// </summary> |
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1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 1172 1173 1174 | /// version 3.9.0. /// </summary> public SQLiteIndexFlags? IdxFlags { get { return idxFlags; } set { idxFlags = value; } } #endregion } #endregion /////////////////////////////////////////////////////////////////////////// #region SQLiteIndex Helper Class | > > > > > > > > > > > > > > > > > > > > > > > > | 1179 1180 1181 1182 1183 1184 1185 1186 1187 1188 1189 1190 1191 1192 1193 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 | /// version 3.9.0. /// </summary> public SQLiteIndexFlags? IdxFlags { get { return idxFlags; } set { idxFlags = value; } } /////////////////////////////////////////////////////////////////////// private long? colUsed; /// <summary> /// The colUsed field indicates which columns of the virtual table /// may be required by the current scan. Virtual table columns are /// numbered from zero in the order in which they appear within the /// CREATE TABLE statement passed to sqlite3_declare_vtab(). For the /// first 63 columns (columns 0-62), the corresponding bit is set /// within the colUsed mask if the column may be required by SQLite. /// If the table has at least 64 columns and any column to the right /// of the first 63 is required, then bit 63 of colUsed is also set. /// In other words, column iCol may be required if the expression /// (colUsed & ((sqlite3_uint64)1 << (iCol>=63 ? 63 : iCol))) /// evaluates to non-zero. Using a null value here indicates that a /// default flags value should be used. This property has no effect /// if the SQLite core library is not at least version 3.10.0. /// </summary> public long? ColUsed { get { return colUsed; } set { colUsed = value; } } #endregion } #endregion /////////////////////////////////////////////////////////////////////////// #region SQLiteIndex Helper Class |
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1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 | if (index.Outputs.CanUseIdxFlags() && index.Outputs.IdxFlags.HasValue) { SQLiteMarshal.WriteInt32(pIndex, offset, (int)index.Outputs.IdxFlags.GetValueOrDefault()); } } #endregion /////////////////////////////////////////////////////////////////////// #region Public Properties private SQLiteIndexInputs inputs; | > > > > > > > | 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 | if (index.Outputs.CanUseIdxFlags() && index.Outputs.IdxFlags.HasValue) { SQLiteMarshal.WriteInt32(pIndex, offset, (int)index.Outputs.IdxFlags.GetValueOrDefault()); } if (index.Outputs.CanUseColUsed() && index.Outputs.ColUsed.HasValue) { SQLiteMarshal.WriteInt64(pIndex, offset, index.Outputs.ColUsed.GetValueOrDefault()); } } #endregion /////////////////////////////////////////////////////////////////////// #region Public Properties private SQLiteIndexInputs inputs; |
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