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Overview
| Comment: | Move marshalling utility methods into the internal SQLiteMarshal class. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | virtualTables |
| Files: | files | file ages | folders |
| SHA1: |
89613e2645a8a2747d5d060ff666c7cf |
| User & Date: | mistachkin 2013-06-18 21:15:34 |
Context
|
2013-06-19
| ||
| 07:02 | Pickup SQLite core library with disposable vtable support from upstream. More work on integration of the SQLiteModuleBase class. Add initial tests. check-in: 15b1d1d825 user: mistachkin tags: virtualTables | |
|
2013-06-18
| ||
| 21:15 | Move marshalling utility methods into the internal SQLiteMarshal class. check-in: 89613e2645 user: mistachkin tags: virtualTables | |
| 20:39 | Fix xCreate and xConnect delegate signatures. Finish marshalling of the sqlite3_index_info structure. check-in: 7461bf423f user: mistachkin tags: virtualTables | |
Changes
Changes to System.Data.SQLite/SQLite3.cs.
1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 |
internal override SQLiteErrorCode DeclareVirtualTable(
SQLiteModuleBase module,
string strSql,
ref string error
)
{
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_declare_vtab(
_sql, SQLiteModuleBase.Utf8IntPtrFromString(strSql));
if ((n == SQLiteErrorCode.Ok) && (module != null))
module.Declared = true;
if (n != SQLiteErrorCode.Ok) error = GetLastError();
return n;
|
| |
1532 1533 1534 1535 1536 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 |
internal override SQLiteErrorCode DeclareVirtualTable(
SQLiteModuleBase module,
string strSql,
ref string error
)
{
SQLiteErrorCode n = UnsafeNativeMethods.sqlite3_declare_vtab(
_sql, SQLiteMarshal.Utf8IntPtrFromString(strSql));
if ((n == SQLiteErrorCode.Ok) && (module != null))
module.Declared = true;
if (n != SQLiteErrorCode.Ok) error = GetLastError();
return n;
|
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ... 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 ... 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 ... 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 953 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 985 986 ... 988 989 990 991 992 993 994 995 996 997 998 999 1000 1001 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 .... 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 .... 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 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 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 .... 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 1129 1130 1131 1132 1133 1134 1135 1136 1137 1138 1139 1140 .... 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 1165 1166 1167 1168 1169 1170 1171 .... 1176 1177 1178 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 .... 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 .... 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 .... 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 .... 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 1396 1397 1398 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 1438 1439 1440 1441 1442 1443 1444 1445 1446 1447 1448 1449 1450 1451 1452 1453 1454 1455 1456 1457 1458 1459 1460 1461 1462 1463 1464 1465 1466 1467 1468 1469 1470 1471 1472 1473 1474 1475 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 .... 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 .... 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 .... 1560 1561 1562 1563 1564 1565 1566 1567 1568 1569 1570 1571 1572 1573 1574 1575 1576 1577 .... 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 1595 .... 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 1634 1635 1636 1637 1638 1639 1640 1641 1642 1643 1644 .... 1655 1656 1657 1658 1659 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 .... 1694 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 .... 1725 1726 1727 1728 1729 1730 1731 1732 1733 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 .... 1903 1904 1905 1906 1907 1908 1909 1910 1911 1912 1913 1914 1915 1916 1917 1918 .... 2034 2035 2036 2037 2038 2039 2040 2041 2042 2043 2044 2045 2046 2047 2048 .... 2134 2135 2136 2137 2138 2139 2140 2141 2142 2143 2144 2145 2146 2147 2148 2149 .... 2165 2166 2167 2168 2169 2170 2171 2172 2173 2174 2175 2176 2177 2178 2179 |
///////////////////////////////////////////////////////////////////////
public void SetString(string value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
byte[] bytes = SQLiteModuleBase.GetUtf8BytesFromString(value);
if (bytes == null)
throw new ArgumentNullException("value");
UnsafeNativeMethods.sqlite3_result_text(
pContext, bytes, bytes.Length, (IntPtr)(-1));
}
................................................................................
///////////////////////////////////////////////////////////////////////
public void SetError(string value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
byte[] bytes = SQLiteModuleBase.GetUtf8BytesFromString(value);
if (bytes == null)
throw new ArgumentNullException("value");
UnsafeNativeMethods.sqlite3_result_error(
pContext, bytes, bytes.Length);
}
................................................................................
}
///////////////////////////////////////////////////////////////////////
public string GetString()
{
if (pValue == IntPtr.Zero) return null;
return SQLiteModuleBase.StringFromUtf8IntPtr(pValue, GetBytes());
}
///////////////////////////////////////////////////////////////////////
public byte[] GetBlob()
{
if (pValue == IntPtr.Zero) return null;
return SQLiteModuleBase.BytesFromIntPtr(pValue, GetBytes());
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
................................................................................
int iSavepoint /* in */
);
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteModuleBase Class
public abstract class SQLiteModuleBase :
ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
#region Private Constants
private static readonly Encoding Utf8Encoding = Encoding.UTF8;
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
private UnsafeNativeMethods.sqlite3_module CreateNativeModule()
{
UnsafeNativeMethods.sqlite3_module module =
new UnsafeNativeMethods.sqlite3_module();
module.iVersion = 2;
module.xCreate = new UnsafeNativeMethods.xCreate(xCreate);
module.xConnect = new UnsafeNativeMethods.xConnect(xConnect);
module.xBestIndex = new UnsafeNativeMethods.xBestIndex(xBestIndex);
module.xDisconnect = new UnsafeNativeMethods.xDisconnect(xDisconnect);
module.xDestroy = new UnsafeNativeMethods.xDestroy(xDestroy);
module.xOpen = new UnsafeNativeMethods.xOpen(xOpen);
module.xClose = new UnsafeNativeMethods.xClose(xClose);
module.xFilter = new UnsafeNativeMethods.xFilter(xFilter);
module.xNext = new UnsafeNativeMethods.xNext(xNext);
module.xEof = new UnsafeNativeMethods.xEof(xEof);
module.xColumn = new UnsafeNativeMethods.xColumn(xColumn);
module.xRowId = new UnsafeNativeMethods.xRowId(xRowId);
module.xUpdate = new UnsafeNativeMethods.xUpdate(xUpdate);
module.xBegin = new UnsafeNativeMethods.xBegin(xBegin);
module.xSync = new UnsafeNativeMethods.xSync(xSync);
module.xCommit = new UnsafeNativeMethods.xCommit(xCommit);
module.xRollback = new UnsafeNativeMethods.xRollback(xRollback);
module.xFindFunction = new UnsafeNativeMethods.xFindFunction(xFindFunction);
module.xRename = new UnsafeNativeMethods.xRename(xRename);
module.xSavepoint = new UnsafeNativeMethods.xSavepoint(xSavepoint);
module.xRelease = new UnsafeNativeMethods.xRelease(xRelease);
module.xRollbackTo = new UnsafeNativeMethods.xRollbackTo(xRollbackTo);
return module;
}
private static int ThirtyBits = 0x3fffffff;
///////////////////////////////////////////////////////////////////////
private static IntPtr IntPtrForOffset(
IntPtr pointer,
int offset
)
{
return new IntPtr(pointer.ToInt64() + offset);
}
///////////////////////////////////////////////////////////////////////
private static int MarshalReadInt32(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt32(pointer, offset);
#else
return Marshal.ReadInt32(IntPtrForOffset(pointer, offset));
#endif
}
///////////////////////////////////////////////////////////////////////
private static double MarshalReadDouble(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return BitConverter.Int64BitsToDouble(Marshal.ReadInt64(
pointer, offset));
................................................................................
return BitConverter.ToDouble(BitConverter.GetBytes(
Marshal.ReadInt64(IntPtrForOffset(pointer, offset))), 0);
#endif
}
///////////////////////////////////////////////////////////////////////
private static IntPtr MarshalReadIntPtr(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadIntPtr(pointer, offset);
#else
return Marshal.ReadIntPtr(IntPtrForOffset(pointer, offset));
#endif
}
///////////////////////////////////////////////////////////////////////
private static void MarshalWriteInt32(
IntPtr pointer,
int offset,
int value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt32(pointer, offset, value);
................................................................................
#else
Marshal.WriteInt32(IntPtrForOffset(pointer, offset), value);
#endif
}
///////////////////////////////////////////////////////////////////////
private static void MarshalWriteDouble(
IntPtr pointer,
int offset,
double value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset,
................................................................................
Marshal.WriteInt64(IntPtrForOffset(pointer, offset),
BitConverter.ToInt64(BitConverter.GetBytes(value), 0));
#endif
}
///////////////////////////////////////////////////////////////////////
private static void MarshalWriteIntPtr(
IntPtr pointer,
int offset,
IntPtr value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
}
///////////////////////////////////////////////////////////////////////
internal static byte[] GetUtf8BytesFromString(string value)
{
if (value == null)
return null;
return Utf8Encoding.GetBytes(value);
}
///////////////////////////////////////////////////////////////////////
private static string GetStringFromUtf8Bytes(byte[] bytes)
{
if (bytes == null)
return null;
#if !PLATFORM_COMPACTFRAMEWORK
return Utf8Encoding.GetString(bytes);
#else
return Utf8Encoding.GetString(bytes, 0, bytes.Length);
#endif
}
///////////////////////////////////////////////////////////////////////
private static IntPtr Allocate(int size)
{
return UnsafeNativeMethods.sqlite3_malloc(size);
}
///////////////////////////////////////////////////////////////////////
private static void Free(IntPtr pMemory)
{
UnsafeNativeMethods.sqlite3_free(pMemory);
}
///////////////////////////////////////////////////////////////////////
private static IntPtr BytesToIntPtr(byte[] value)
{
if (value == null)
return IntPtr.Zero;
int length = value.Length;
if (length == 0)
................................................................................
if (result == IntPtr.Zero)
return IntPtr.Zero;
Marshal.Copy(value, 0, result, length);
return result;
}
///////////////////////////////////////////////////////////////////////
internal static byte[] BytesFromIntPtr(IntPtr pValue, int length)
{
if (pValue == IntPtr.Zero)
return null;
if (length == 0)
return new byte[0];
byte[] result = new byte[length];
Marshal.Copy(pValue, result, 0, length);
return result;
}
///////////////////////////////////////////////////////////////////////
private static int ProbeForUtf8ByteLength(IntPtr pValue, int limit)
{
int length = 0;
if (pValue != IntPtr.Zero)
{
do
{
................................................................................
}
return length;
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(IntPtr pValue)
{
return StringFromUtf8IntPtr(pValue,
ProbeForUtf8ByteLength(pValue, ThirtyBits));
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(IntPtr pValue, int length)
{
if (pValue == IntPtr.Zero)
return null;
if (length > 0)
{
byte[] bytes = new byte[length];
................................................................................
}
return String.Empty;
}
///////////////////////////////////////////////////////////////////////
private static string[] StringArrayFromUtf8IntPtrArray(
IntPtr[] pValues
)
{
if (pValues == null)
return null;
string[] result = new string[pValues.Length];
for (int index = 0; index < result.Length; index++)
result[index] = StringFromUtf8IntPtr(pValues[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
internal static IntPtr Utf8IntPtrFromString(string value)
{
if (value == null)
return IntPtr.Zero;
IntPtr result = IntPtr.Zero;
byte[] bytes = GetUtf8BytesFromString(value);
if (bytes == null)
................................................................................
return IntPtr.Zero;
Marshal.Copy(bytes, 0, result, length);
Marshal.WriteByte(result, length, 0);
return result;
}
///////////////////////////////////////////////////////////////////////
private static IntPtr[] Utf8IntPtrArrayFromStringArray(
string[] values
)
{
if (values == null)
return null;
IntPtr[] result = new IntPtr[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = Utf8IntPtrFromString(values[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
private static SQLiteValue[] ValueArrayFromSizeAndIntPtr(
int nData,
IntPtr apData
)
{
if (nData < 0)
return null;
................................................................................
SQLiteValue[] result = new SQLiteValue[nData];
for (int index = 0, offset = 0;
index < result.Length;
index++, offset += IntPtr.Size)
{
IntPtr pData = MarshalReadIntPtr(apData, offset);
result[index] = (pData != IntPtr.Zero) ?
new SQLiteValue(pData) : null;
}
return result;
}
///////////////////////////////////////////////////////////////////////
private static SQLiteValue[] ValueArrayFromIntPtrArray(
IntPtr[] values
)
{
if (values == null)
return null;
SQLiteValue[] result = new SQLiteValue[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = new SQLiteValue(values[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
private static void IndexToIntPtr(
SQLiteIndex index,
IntPtr pIndex
)
{
if ((index == null) || (index.Inputs == null) ||
(index.Inputs.Constraints == null) ||
(index.Inputs.OrderBys == null) || (index.Outputs == null) ||
................................................................................
}
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = MarshalReadInt32(pIndex, offset);
if (nConstraint != index.Inputs.Constraints.Length)
return;
if (nConstraint != index.Outputs.ConstraintUsages.Length)
return;
offset += sizeof(int);
IntPtr pConstraint = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = MarshalReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = MarshalReadIntPtr(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
................................................................................
constraintUsage, IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), false);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
///////////////////////////////////////////////////////////////////////
private static void IndexFromIntPtr(
IntPtr pIndex,
ref SQLiteIndex index
)
{
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
IntPtr pConstraint = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = MarshalReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = MarshalReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
index.Outputs.IdxNum = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.IdxStr = StringFromUtf8IntPtr(IntPtrForOffset(
pIndex, offset));
offset += IntPtr.Size;
index.Outputs.NeedToFreeIdxStr = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.OrderByConsumed = MarshalReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.EstimatedCost = MarshalReadDouble(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
new UnsafeNativeMethods.sqlite3_index_constraint();
Marshal.PtrToStructure(IntPtrForOffset(pConstraint,
iConstraint * sizeOfConstraintType), constraint);
index.Inputs.Constraints[iConstraint] =
new SQLiteIndexConstraint(constraint);
}
int sizeOfOrderByType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_orderby));
for (int iOrderBy = 0; iOrderBy < nOrderBy; iOrderBy++)
{
UnsafeNativeMethods.sqlite3_index_orderby orderBy =
new UnsafeNativeMethods.sqlite3_index_orderby();
Marshal.PtrToStructure(IntPtrForOffset(pOrderBy,
iOrderBy * sizeOfOrderByType), orderBy);
index.Inputs.OrderBys[iOrderBy] =
new SQLiteIndexOrderBy(orderBy);
}
int sizeOfConstraintUsageType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint_usage));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage =
new UnsafeNativeMethods.sqlite3_index_constraint_usage();
Marshal.PtrToStructure(IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), constraintUsage);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
................................................................................
#region Protected Members
protected virtual IntPtr AllocateTable()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeTable(IntPtr pVtab)
{
Free(pVtab);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr AllocateCursor()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab_cursor));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr GetTableFromCursor(
IntPtr pCursor
)
................................................................................
{
if (pCursor == IntPtr.Zero)
return null;
SQLiteVirtualTableCursor result =
new SQLiteVirtualTableCursor(pCursor);
// Marshal.PtrToStructure(pCursor, result.cursor);
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr MarshalCursorToIntPtr(
SQLiteVirtualTableCursor cursor
................................................................................
bool success = false;
try
{
result = AllocateCursor();
if (result != IntPtr.Zero)
{
// Marshal.StructureToPtr(cursor.cursor, result, false);
success = true;
}
}
finally
{
if (!success && (result != IntPtr.Zero))
{
FreeCursor(result);
result = IntPtr.Zero;
................................................................................
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeCursor(IntPtr pCursor)
{
Free(pCursor);
}
///////////////////////////////////////////////////////////////////////
protected virtual SQLiteErrorCode DeclareTable(
SQLiteConnection connection,
string sql,
................................................................................
{
if (pVtab == IntPtr.Zero)
return false;
int offset = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_module)) + sizeof(int);
IntPtr pError = MarshalReadIntPtr(pVtab, offset);
if (pError != IntPtr.Zero)
{
Free(pError); pError = IntPtr.Zero;
MarshalWriteIntPtr(pVtab, offset, pError);
}
MarshalWriteIntPtr(pVtab, offset, Utf8IntPtrFromString(error));
return true;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
................................................................................
{
using (SQLiteConnection connection = new SQLiteConnection(
pDb, false))
{
string error = null;
if (Create(connection, pAux,
StringArrayFromUtf8IntPtrArray(argv),
ref error) == SQLiteErrorCode.Ok)
{
pVtab = AllocateTable();
return SQLiteErrorCode.Ok;
}
else
{
pError = Utf8IntPtrFromString(error);
}
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
pError = Utf8IntPtrFromString(e.ToString());
}
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////////
................................................................................
{
using (SQLiteConnection connection = new SQLiteConnection(
pDb, false))
{
string error = null;
if (Connect(connection, pAux,
StringArrayFromUtf8IntPtrArray(argv),
ref error) == SQLiteErrorCode.Ok)
{
pVtab = AllocateTable();
return SQLiteErrorCode.Ok;
}
else
{
pError = Utf8IntPtrFromString(error);
}
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
pError = Utf8IntPtrFromString(e.ToString());
}
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////////
................................................................................
IntPtr pIndex
)
{
try
{
SQLiteIndex index = null;
IndexFromIntPtr(pIndex, ref index);
if (BestIndex(index) == SQLiteErrorCode.Ok)
{
IndexToIntPtr(index, pIndex);
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
................................................................................
{
pVtab = GetTableFromCursor(pCursor);
SQLiteVirtualTableCursor cursor = MarshalCursorFromIntPtr(
pCursor);
if (Filter(
cursor, idxNum, StringFromUtf8IntPtr(idxStr),
ValueArrayFromIntPtrArray(argv)) == SQLiteErrorCode.Ok)
{
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
................................................................................
int nData,
IntPtr apData,
ref long rowId
)
{
try
{
SQLiteValue[] values = ValueArrayFromSizeAndIntPtr(
nData, apData);
return Update(values, ref rowId);
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
................................................................................
)
{
try
{
SQLiteFunction function = null;
if (FindFunction(
nArg, StringFromUtf8IntPtr(zName), ref function,
ref pClientData))
{
if (function != null)
{
callback = function.ScalarCallback;
return true;
}
else
................................................................................
public SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
)
{
try
{
return Rename(StringFromUtf8IntPtr(zNew));
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
return SQLiteErrorCode.Error;
|
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85 86 87 88 89 90 91 92 93 94 95 96 97 98 99 ... 101 102 103 104 105 106 107 108 109 110 111 112 113 114 115 ... 255 256 257 258 259 260 261 262 263 264 265 266 267 268 269 270 271 272 273 274 275 276 277 ... 901 902 903 904 905 906 907 908 909 910 911 912 913 914 915 916 917 918 919 920 921 922 923 924 925 926 927 928 929 930 931 932 933 934 935 936 937 938 939 940 941 942 943 944 945 946 947 948 949 950 951 952 ... 954 955 956 957 958 959 960 961 962 963 964 965 966 967 968 969 970 971 972 973 974 975 976 977 978 979 980 981 982 983 984 ... 985 986 987 988 989 990 991 992 993 994 995 996 997 998 999 .... 1002 1003 1004 1005 1006 1007 1008 1009 1010 1011 1012 1013 1014 1015 1016 1017 1018 1019 1020 1021 1022 1023 1024 1025 1026 1027 1028 1029 1030 1031 1032 1033 1034 1035 1036 1037 1038 1039 1040 1041 1042 1043 1044 1045 1046 1047 1048 1049 1050 1051 1052 1053 1054 1055 1056 1057 1058 1059 1060 1061 1062 1063 1064 1065 1066 1067 1068 1069 1070 1071 .... 1076 1077 1078 1079 1080 1081 1082 1083 1084 1085 1086 1087 1088 1089 1090 1091 1092 1093 1094 1095 1096 1097 1098 1099 1100 1101 1102 1103 1104 1105 1106 1107 1108 1109 1110 1111 1112 1113 1114 1115 1116 1117 1118 1119 1120 1121 1122 1123 1124 1125 1126 1127 1128 .... 1137 1138 1139 1140 1141 1142 1143 1144 1145 1146 1147 1148 1149 1150 1151 1152 1153 1154 1155 1156 1157 1158 1159 1160 1161 1162 1163 1164 .... 1169 1170 1171 1172 1173 1174 1175 1176 1177 1178 1179 1180 1181 1182 1183 1184 1185 1186 .... 1194 1195 1196 1197 1198 1199 1200 1201 1202 1203 1204 1205 1206 1207 1208 1209 1210 1211 1212 1213 1214 1215 1216 1217 1218 1219 1220 1221 1222 1223 1224 1225 1226 1227 1228 1229 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 .... 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 1266 1267 1268 1269 1270 1271 1272 1273 1274 1275 1276 1277 1278 1279 1280 1281 1282 1283 1284 1285 1286 1287 1288 1289 1290 1291 1292 1293 1294 1295 1296 1297 1298 1299 1300 1301 1302 1303 1304 1305 1306 1307 1308 1309 1310 1311 1312 1313 1314 1315 1316 1317 1318 1319 1320 1321 1322 1323 1324 1325 1326 1327 1328 1329 1330 1331 1332 1333 1334 1335 1336 1337 1338 1339 1340 1341 1342 1343 1344 1345 1346 1347 1348 1349 1350 1351 1352 1353 1354 1355 1356 1357 1358 1359 1360 1361 1362 1363 1364 1365 1366 1367 1368 1369 1370 1371 1372 1373 1374 1375 1376 1377 1378 1379 1380 1381 1382 1383 1384 1385 1386 1387 1388 1389 1390 1391 1392 1393 1394 1395 .... 1399 1400 1401 1402 1403 1404 1405 1406 1407 1408 1409 1410 1411 1412 1413 1414 1415 1416 1417 1418 1419 1420 1421 1422 1423 1424 1425 1426 1427 1428 1429 1430 1431 1432 1433 1434 1435 1436 1437 .... 1476 1477 1478 1479 1480 1481 1482 1483 1484 1485 1486 1487 1488 1489 1490 1491 1492 1493 1494 1495 1496 1497 1498 1499 1500 1501 1502 1503 1504 1505 1506 1507 1508 1509 1510 1511 1512 1513 1514 1515 1516 1517 1518 1519 1520 1521 1522 1523 1524 1525 1526 1527 1528 1529 1530 .... 1537 1538 1539 1540 1541 1542 1543 1544 1545 1546 1547 1548 1549 1550 1551 1552 1553 1554 1555 1556 1557 1558 1559 1560 1561 1562 1563 1564 1565 1566 1567 1568 .... 1581 1582 1583 1584 1585 1586 1587 1588 1589 1590 1591 1592 1593 1594 .... 1601 1602 1603 1604 1605 1606 1607 1608 1609 1610 1611 1612 1613 1614 1615 .... 1619 1620 1621 1622 1623 1624 1625 1626 1627 1628 1629 1630 1631 1632 1633 .... 1660 1661 1662 1663 1664 1665 1666 1667 1668 1669 1670 1671 1672 1673 1674 1675 1676 1677 1678 1679 1680 1681 1682 1683 1684 .... 1695 1696 1697 1698 1699 1700 1701 1702 1703 1704 1705 1706 1707 1708 1709 1710 1711 1712 1713 1714 1715 1716 1717 1718 1719 1720 1721 1722 1723 .... 1734 1735 1736 1737 1738 1739 1740 1741 1742 1743 1744 1745 1746 1747 1748 1749 1750 1751 1752 1753 1754 1755 1756 1757 1758 1759 1760 1761 1762 .... 1765 1766 1767 1768 1769 1770 1771 1772 1773 1774 1775 1776 1777 1778 1779 1780 1781 1782 1783 .... 1943 1944 1945 1946 1947 1948 1949 1950 1951 1952 1953 1954 1955 1956 1957 1958 .... 2074 2075 2076 2077 2078 2079 2080 2081 2082 2083 2084 2085 2086 2087 2088 .... 2174 2175 2176 2177 2178 2179 2180 2181 2182 2183 2184 2185 2186 2187 2188 2189 .... 2205 2206 2207 2208 2209 2210 2211 2212 2213 2214 2215 2216 2217 2218 2219 |
///////////////////////////////////////////////////////////////////////
public void SetString(string value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
byte[] bytes = SQLiteMarshal.GetUtf8BytesFromString(value);
if (bytes == null)
throw new ArgumentNullException("value");
UnsafeNativeMethods.sqlite3_result_text(
pContext, bytes, bytes.Length, (IntPtr)(-1));
}
................................................................................
///////////////////////////////////////////////////////////////////////
public void SetError(string value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
byte[] bytes = SQLiteMarshal.GetUtf8BytesFromString(value);
if (bytes == null)
throw new ArgumentNullException("value");
UnsafeNativeMethods.sqlite3_result_error(
pContext, bytes, bytes.Length);
}
................................................................................
}
///////////////////////////////////////////////////////////////////////
public string GetString()
{
if (pValue == IntPtr.Zero) return null;
return SQLiteMarshal.StringFromUtf8IntPtr(pValue, GetBytes());
}
///////////////////////////////////////////////////////////////////////
public byte[] GetBlob()
{
if (pValue == IntPtr.Zero) return null;
return SQLiteMarshal.BytesFromIntPtr(pValue, GetBytes());
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
................................................................................
int iSavepoint /* in */
);
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteMarshal Class
internal static class SQLiteMarshal
{
#region Private Constants
private static int ThirtyBits = 0x3fffffff;
private static readonly Encoding Utf8Encoding = Encoding.UTF8;
#endregion
///////////////////////////////////////////////////////////////////////
#region IntPtr Helper Methods
internal static IntPtr IntPtrForOffset(
IntPtr pointer,
int offset
)
{
return new IntPtr(pointer.ToInt64() + offset);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Marshal Read Helper Methods
internal static int ReadInt32(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadInt32(pointer, offset);
#else
return Marshal.ReadInt32(IntPtrForOffset(pointer, offset));
#endif
}
///////////////////////////////////////////////////////////////////////
internal static double ReadDouble(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return BitConverter.Int64BitsToDouble(Marshal.ReadInt64(
pointer, offset));
................................................................................
return BitConverter.ToDouble(BitConverter.GetBytes(
Marshal.ReadInt64(IntPtrForOffset(pointer, offset))), 0);
#endif
}
///////////////////////////////////////////////////////////////////////
internal static IntPtr ReadIntPtr(
IntPtr pointer,
int offset
)
{
#if !PLATFORM_COMPACTFRAMEWORK
return Marshal.ReadIntPtr(pointer, offset);
#else
return Marshal.ReadIntPtr(IntPtrForOffset(pointer, offset));
#endif
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Marshal Write Helper Methods
internal static void WriteInt32(
IntPtr pointer,
int offset,
int value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt32(pointer, offset, value);
................................................................................
#else
Marshal.WriteInt32(IntPtrForOffset(pointer, offset), value);
#endif
}
///////////////////////////////////////////////////////////////////////
internal static void WriteDouble(
IntPtr pointer,
int offset,
double value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteInt64(pointer, offset,
................................................................................
Marshal.WriteInt64(IntPtrForOffset(pointer, offset),
BitConverter.ToInt64(BitConverter.GetBytes(value), 0));
#endif
}
///////////////////////////////////////////////////////////////////////
internal static void WriteIntPtr(
IntPtr pointer,
int offset,
IntPtr value
)
{
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pointer, offset, value);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pointer, offset), value);
#endif
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Memory Allocation Helper Methods
internal static IntPtr Allocate(int size)
{
return UnsafeNativeMethods.sqlite3_malloc(size);
}
///////////////////////////////////////////////////////////////////////
internal static void Free(IntPtr pMemory)
{
UnsafeNativeMethods.sqlite3_free(pMemory);
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Byte Array Helper Methods
internal static byte[] BytesFromIntPtr(
IntPtr pValue,
int length
)
{
if (pValue == IntPtr.Zero)
return null;
if (length == 0)
return new byte[0];
byte[] result = new byte[length];
Marshal.Copy(pValue, result, 0, length);
return result;
}
///////////////////////////////////////////////////////////////////////
internal static IntPtr BytesToIntPtr(
byte[] value
)
{
if (value == null)
return IntPtr.Zero;
int length = value.Length;
if (length == 0)
................................................................................
if (result == IntPtr.Zero)
return IntPtr.Zero;
Marshal.Copy(value, 0, result, length);
return result;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region UTF-8 Encoding Helper Methods
internal static byte[] GetUtf8BytesFromString(
string value
)
{
if (value == null)
return null;
return Utf8Encoding.GetBytes(value);
}
///////////////////////////////////////////////////////////////////////
internal static string GetStringFromUtf8Bytes(
byte[] bytes
)
{
if (bytes == null)
return null;
#if !PLATFORM_COMPACTFRAMEWORK
return Utf8Encoding.GetString(bytes);
#else
return Utf8Encoding.GetString(bytes, 0, bytes.Length);
#endif
}
#endregion
///////////////////////////////////////////////////////////////////////
#region UTF-8 String Helper Methods
internal static int ProbeForUtf8ByteLength(
IntPtr pValue,
int limit
)
{
int length = 0;
if (pValue != IntPtr.Zero)
{
do
{
................................................................................
}
return length;
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(
IntPtr pValue
)
{
return StringFromUtf8IntPtr(pValue,
ProbeForUtf8ByteLength(pValue, ThirtyBits));
}
///////////////////////////////////////////////////////////////////////
internal static string StringFromUtf8IntPtr(
IntPtr pValue,
int length
)
{
if (pValue == IntPtr.Zero)
return null;
if (length > 0)
{
byte[] bytes = new byte[length];
................................................................................
}
return String.Empty;
}
///////////////////////////////////////////////////////////////////////
internal static IntPtr Utf8IntPtrFromString(
string value
)
{
if (value == null)
return IntPtr.Zero;
IntPtr result = IntPtr.Zero;
byte[] bytes = GetUtf8BytesFromString(value);
if (bytes == null)
................................................................................
return IntPtr.Zero;
Marshal.Copy(bytes, 0, result, length);
Marshal.WriteByte(result, length, 0);
return result;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region UTF-8 String Array Helper Methods
internal static string[] StringArrayFromUtf8IntPtrArray(
IntPtr[] pValues
)
{
if (pValues == null)
return null;
string[] result = new string[pValues.Length];
for (int index = 0; index < result.Length; index++)
result[index] = StringFromUtf8IntPtr(pValues[index]);
return result;
}
///////////////////////////////////////////////////////////////////////
internal static IntPtr[] Utf8IntPtrArrayFromStringArray(
string[] values
)
{
if (values == null)
return null;
IntPtr[] result = new IntPtr[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = Utf8IntPtrFromString(values[index]);
return result;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region SQLiteValue Helper Methods
internal static SQLiteValue[] ValueArrayFromSizeAndIntPtr(
int nData,
IntPtr apData
)
{
if (nData < 0)
return null;
................................................................................
SQLiteValue[] result = new SQLiteValue[nData];
for (int index = 0, offset = 0;
index < result.Length;
index++, offset += IntPtr.Size)
{
IntPtr pData = ReadIntPtr(apData, offset);
result[index] = (pData != IntPtr.Zero) ?
new SQLiteValue(pData) : null;
}
return result;
}
///////////////////////////////////////////////////////////////////////
internal static SQLiteValue[] ValueArrayFromIntPtrArray(
IntPtr[] values
)
{
if (values == null)
return null;
SQLiteValue[] result = new SQLiteValue[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = new SQLiteValue(values[index]);
return result;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region SQLiteIndex Helper Methods
internal static void IndexFromIntPtr(
IntPtr pIndex,
ref SQLiteIndex index
)
{
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = ReadInt32(pIndex, offset);
offset += sizeof(int);
IntPtr pConstraint = ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = ReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
index.Outputs.IdxNum = ReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.IdxStr = StringFromUtf8IntPtr(IntPtrForOffset(
pIndex, offset));
offset += IntPtr.Size;
index.Outputs.NeedToFreeIdxStr = ReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.OrderByConsumed = ReadInt32(pIndex, offset);
offset += sizeof(int);
index.Outputs.EstimatedCost = ReadDouble(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
new UnsafeNativeMethods.sqlite3_index_constraint();
Marshal.PtrToStructure(IntPtrForOffset(pConstraint,
iConstraint * sizeOfConstraintType), constraint);
index.Inputs.Constraints[iConstraint] =
new SQLiteIndexConstraint(constraint);
}
int sizeOfOrderByType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_orderby));
for (int iOrderBy = 0; iOrderBy < nOrderBy; iOrderBy++)
{
UnsafeNativeMethods.sqlite3_index_orderby orderBy =
new UnsafeNativeMethods.sqlite3_index_orderby();
Marshal.PtrToStructure(IntPtrForOffset(pOrderBy,
iOrderBy * sizeOfOrderByType), orderBy);
index.Inputs.OrderBys[iOrderBy] =
new SQLiteIndexOrderBy(orderBy);
}
int sizeOfConstraintUsageType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint_usage));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage =
new UnsafeNativeMethods.sqlite3_index_constraint_usage();
Marshal.PtrToStructure(IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), constraintUsage);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
///////////////////////////////////////////////////////////////////////
internal static void IndexToIntPtr(
SQLiteIndex index,
IntPtr pIndex
)
{
if ((index == null) || (index.Inputs == null) ||
(index.Inputs.Constraints == null) ||
(index.Inputs.OrderBys == null) || (index.Outputs == null) ||
................................................................................
}
if (pIndex == IntPtr.Zero)
return;
int offset = 0;
int nConstraint = ReadInt32(pIndex, offset);
if (nConstraint != index.Inputs.Constraints.Length)
return;
if (nConstraint != index.Outputs.ConstraintUsages.Length)
return;
offset += sizeof(int);
IntPtr pConstraint = ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
int nOrderBy = ReadInt32(pIndex, offset);
index = new SQLiteIndex(nConstraint, nOrderBy);
offset += sizeof(int);
IntPtr pOrderBy = ReadIntPtr(pIndex, offset);
offset += IntPtr.Size;
IntPtr pConstraintUsage = ReadIntPtr(pIndex, offset);
int sizeOfConstraintType = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_index_constraint));
for (int iConstraint = 0; iConstraint < nConstraint; iConstraint++)
{
UnsafeNativeMethods.sqlite3_index_constraint constraint =
................................................................................
constraintUsage, IntPtrForOffset(pConstraintUsage,
iConstraint * sizeOfConstraintUsageType), false);
index.Outputs.ConstraintUsages[iConstraint] =
new SQLiteIndexConstraintUsage(constraintUsage);
}
}
#endregion
}
#endregion
///////////////////////////////////////////////////////////////////////////
#region SQLiteModuleBase Class
public abstract class SQLiteModuleBase :
ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
#region Internal Methods
internal UnsafeNativeMethods.sqlite3_module CreateNativeModule()
{
UnsafeNativeMethods.sqlite3_module module =
new UnsafeNativeMethods.sqlite3_module();
module.iVersion = 2;
module.xCreate = new UnsafeNativeMethods.xCreate(xCreate);
module.xConnect = new UnsafeNativeMethods.xConnect(xConnect);
module.xBestIndex = new UnsafeNativeMethods.xBestIndex(xBestIndex);
module.xDisconnect = new UnsafeNativeMethods.xDisconnect(xDisconnect);
module.xDestroy = new UnsafeNativeMethods.xDestroy(xDestroy);
module.xOpen = new UnsafeNativeMethods.xOpen(xOpen);
module.xClose = new UnsafeNativeMethods.xClose(xClose);
module.xFilter = new UnsafeNativeMethods.xFilter(xFilter);
module.xNext = new UnsafeNativeMethods.xNext(xNext);
module.xEof = new UnsafeNativeMethods.xEof(xEof);
module.xColumn = new UnsafeNativeMethods.xColumn(xColumn);
module.xRowId = new UnsafeNativeMethods.xRowId(xRowId);
module.xUpdate = new UnsafeNativeMethods.xUpdate(xUpdate);
module.xBegin = new UnsafeNativeMethods.xBegin(xBegin);
module.xSync = new UnsafeNativeMethods.xSync(xSync);
module.xCommit = new UnsafeNativeMethods.xCommit(xCommit);
module.xRollback = new UnsafeNativeMethods.xRollback(xRollback);
module.xFindFunction = new UnsafeNativeMethods.xFindFunction(xFindFunction);
module.xRename = new UnsafeNativeMethods.xRename(xRename);
module.xSavepoint = new UnsafeNativeMethods.xSavepoint(xSavepoint);
module.xRelease = new UnsafeNativeMethods.xRelease(xRelease);
module.xRollbackTo = new UnsafeNativeMethods.xRollbackTo(xRollbackTo);
return module;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
................................................................................
#region Protected Members
protected virtual IntPtr AllocateTable()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab));
return SQLiteMarshal.Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeTable(IntPtr pVtab)
{
SQLiteMarshal.Free(pVtab);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr AllocateCursor()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab_cursor));
return SQLiteMarshal.Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr GetTableFromCursor(
IntPtr pCursor
)
................................................................................
{
if (pCursor == IntPtr.Zero)
return null;
SQLiteVirtualTableCursor result =
new SQLiteVirtualTableCursor(pCursor);
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr MarshalCursorToIntPtr(
SQLiteVirtualTableCursor cursor
................................................................................
bool success = false;
try
{
result = AllocateCursor();
if (result != IntPtr.Zero)
success = true;
}
finally
{
if (!success && (result != IntPtr.Zero))
{
FreeCursor(result);
result = IntPtr.Zero;
................................................................................
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeCursor(IntPtr pCursor)
{
SQLiteMarshal.Free(pCursor);
}
///////////////////////////////////////////////////////////////////////
protected virtual SQLiteErrorCode DeclareTable(
SQLiteConnection connection,
string sql,
................................................................................
{
if (pVtab == IntPtr.Zero)
return false;
int offset = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_module)) + sizeof(int);
IntPtr pError = SQLiteMarshal.ReadIntPtr(pVtab, offset);
if (pError != IntPtr.Zero)
{
SQLiteMarshal.Free(pError); pError = IntPtr.Zero;
SQLiteMarshal.WriteIntPtr(pVtab, offset, pError);
}
SQLiteMarshal.WriteIntPtr(pVtab, offset,
SQLiteMarshal.Utf8IntPtrFromString(error));
return true;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
................................................................................
{
using (SQLiteConnection connection = new SQLiteConnection(
pDb, false))
{
string error = null;
if (Create(connection, pAux,
SQLiteMarshal.StringArrayFromUtf8IntPtrArray(argv),
ref error) == SQLiteErrorCode.Ok)
{
pVtab = AllocateTable();
return SQLiteErrorCode.Ok;
}
else
{
pError = SQLiteMarshal.Utf8IntPtrFromString(error);
}
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
pError = SQLiteMarshal.Utf8IntPtrFromString(e.ToString());
}
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////////
................................................................................
{
using (SQLiteConnection connection = new SQLiteConnection(
pDb, false))
{
string error = null;
if (Connect(connection, pAux,
SQLiteMarshal.StringArrayFromUtf8IntPtrArray(argv),
ref error) == SQLiteErrorCode.Ok)
{
pVtab = AllocateTable();
return SQLiteErrorCode.Ok;
}
else
{
pError = SQLiteMarshal.Utf8IntPtrFromString(error);
}
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
pError = SQLiteMarshal.Utf8IntPtrFromString(e.ToString());
}
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////////
................................................................................
IntPtr pIndex
)
{
try
{
SQLiteIndex index = null;
SQLiteMarshal.IndexFromIntPtr(pIndex, ref index);
if (BestIndex(index) == SQLiteErrorCode.Ok)
{
SQLiteMarshal.IndexToIntPtr(index, pIndex);
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
................................................................................
{
pVtab = GetTableFromCursor(pCursor);
SQLiteVirtualTableCursor cursor = MarshalCursorFromIntPtr(
pCursor);
if (Filter(
cursor, idxNum, SQLiteMarshal.StringFromUtf8IntPtr(idxStr),
SQLiteMarshal.ValueArrayFromIntPtrArray(argv)) == SQLiteErrorCode.Ok)
{
return SQLiteErrorCode.Ok;
}
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
................................................................................
int nData,
IntPtr apData,
ref long rowId
)
{
try
{
SQLiteValue[] values = SQLiteMarshal.ValueArrayFromSizeAndIntPtr(
nData, apData);
return Update(values, ref rowId);
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
................................................................................
)
{
try
{
SQLiteFunction function = null;
if (FindFunction(
nArg, SQLiteMarshal.StringFromUtf8IntPtr(zName),
ref function, ref pClientData))
{
if (function != null)
{
callback = function.ScalarCallback;
return true;
}
else
................................................................................
public SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
)
{
try
{
return Rename(SQLiteMarshal.StringFromUtf8IntPtr(zNew));
}
catch (Exception e) /* NOTE: Must catch ALL. */
{
SetTableError(pVtab, e.ToString());
}
return SQLiteErrorCode.Error;
|