Many hyperlinks are disabled.
Use anonymous login
to enable hyperlinks.
Overview
| Comment: | Implement the xFilter virtual table method. More cleanup. |
|---|---|
| Downloads: | Tarball | ZIP archive |
| Timelines: | family | ancestors | descendants | both | virtualTables |
| Files: | files | file ages | folders |
| SHA1: |
08eaed4731c9a225f9e29bb21dde0d8b |
| User & Date: | mistachkin 2013-06-07 21:23:10.783 |
Context
|
2013-06-08
| ||
| 02:36 | Reorganize native interop definitions into the UnsafeNativeMethods class. Enable compilation for the .NET Compact Framework. check-in: 2a9118d124 user: mistachkin tags: virtualTables | |
|
2013-06-07
| ||
| 21:23 | Implement the xFilter virtual table method. More cleanup. check-in: 08eaed4731 user: mistachkin tags: virtualTables | |
| 19:14 | Implement the SQLiteContext helper class. check-in: 95425066e0 user: mistachkin tags: virtualTables | |
Changes
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
| ︙ | ︙ | |||
412 413 414 415 416 417 418 |
public xRollbackTo xRollbackTo;
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_vtab
{
[MarshalAs(UnmanagedType.LPStruct)]
| | | | | | | | | | | | | | | | | | | | | | | | 412 413 414 415 416 417 418 419 420 421 422 423 424 425 426 427 428 429 430 431 432 433 434 435 436 437 438 439 440 441 442 443 444 445 446 447 448 449 450 451 452 453 454 455 456 457 458 459 460 461 462 463 464 465 466 467 468 469 470 471 472 473 474 475 476 |
public xRollbackTo xRollbackTo;
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_vtab
{
[MarshalAs(UnmanagedType.LPStruct)]
public sqlite3_module pModule;
public int nRef; /* NO LONGER USED */
public IntPtr zErrMsg;
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_vtab_cursor
{
[MarshalAs(UnmanagedType.LPStruct)]
public sqlite3_vtab pVTab;
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_index_constraint
{
public int iColumn;
public byte op;
public byte usable;
public int iTermOffset;
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_index_orderby
{
public int iColumn; /* Column number */
public byte desc; /* True for DESC. False for ASC. */
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_index_constraint_usage
{
public int argvIndex; /* if >0, constraint is part of argv to xFilter */
public byte omit; /* Do not code a test for this constraint */
}
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_index_info
{
/* Inputs */
public int nConstraint; /* Number of entries in aConstraint */
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)]
public sqlite3_index_constraint[] aConstraint;
public int nOrderBy;
public sqlite3_index_orderby[] aOrderBy;
/* Outputs */
public sqlite3_index_constraint_usage[] aConstraintUsage;
public int idxNum; /* Number used to identify the index */
public string idxStr; /* String, possibly obtained from sqlite3_malloc */
public int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
public int orderByConsumed; /* True if output is already ordered */
public double estimatedCost; /* Estimated cost of using this index */
}
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
|
| ︙ | ︙ | |||
814 815 816 817 818 819 820 821 822 823 824 825 826 827 |
IntPtr[] result = new IntPtr[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = Utf8IntPtrFromString(values[index]);
return result;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
{
| > > > > > > > > > > > > > > > > > | 814 815 816 817 818 819 820 821 822 823 824 825 826 827 828 829 830 831 832 833 834 835 836 837 838 839 840 841 842 843 844 |
IntPtr[] result = new IntPtr[values.Length];
for (int index = 0; index < result.Length; index++)
result[index] = Utf8IntPtrFromString(values[index]);
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;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Public Constructors
public SQLiteModuleBase()
{
|
| ︙ | ︙ | |||
913 914 915 916 917 918 919 |
FreeCursor(result);
result = IntPtr.Zero;
}
}
return result;
}
| < < < < | 930 931 932 933 934 935 936 937 938 939 940 941 942 943 |
FreeCursor(result);
result = IntPtr.Zero;
}
}
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeCursor(IntPtr pCursor)
{
Free(pCursor);
}
|
| ︙ | ︙ | |||
1217 1218 1219 1220 1221 1222 1223 |
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
)
{
| > > > > > > > > > > > > > | > > > > > > > > | 1230 1231 1232 1233 1234 1235 1236 1237 1238 1239 1240 1241 1242 1243 1244 1245 1246 1247 1248 1249 1250 1251 1252 1253 1254 1255 1256 1257 1258 1259 1260 1261 1262 1263 1264 1265 |
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
)
{
IntPtr pVtab = IntPtr.Zero;
try
{
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());
}
return SQLiteErrorCode.Error;
}
///////////////////////////////////////////////////////////////////////
public SQLiteErrorCode xNext(
IntPtr pCursor
)
|
| ︙ | ︙ |