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Overview
| Comment: | Reorganize native interop definitions into the UnsafeNativeMethods class. Enable compilation for the .NET Compact Framework. |
|---|---|
| Downloads: | Tarball | ZIP archive | SQL archive |
| Timelines: | family | ancestors | descendants | both | virtualTables |
| Files: | files | file ages | folders |
| SHA1: |
2a9118d124af13c396a7e73cfcbfe90c |
| User & Date: | mistachkin 2013-06-08 02:36:14 |
Context
|
2013-06-08
| ||
| 04:15 | Add disposal checks to the SQLiteModuleNoop class. check-in: 62d2f9e5bd user: mistachkin tags: virtualTables | |
| 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 | |
Changes
Changes to System.Data.SQLite/SQLiteModuleBase.cs.
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///////////////////////////////////////////////////////////////////////
public void SetDouble(double value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
UnsafeNativeMethods.sqlite3_result_double(pContext, value);
}
///////////////////////////////////////////////////////////////////////
public void SetInt(int value)
{
if (pContext == IntPtr.Zero)
................................................................................
///////////////////////////////////////////////////////////////////////
public void SetInt64(long value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
UnsafeNativeMethods.sqlite3_result_int64(pContext, value);
}
///////////////////////////////////////////////////////////////////////
public void SetString(string value)
{
if (pContext == IntPtr.Zero)
................................................................................
}
///////////////////////////////////////////////////////////////////////
public long GetInt64()
{
if (pValue == IntPtr.Zero) return default(long);
return UnsafeNativeMethods.sqlite3_value_int64(pValue);
}
///////////////////////////////////////////////////////////////////////
public double GetDouble()
{
if (pValue == IntPtr.Zero) return default(double);
return UnsafeNativeMethods.sqlite3_value_double(pValue);
}
///////////////////////////////////////////////////////////////////////
public string GetString()
{
if (pValue == IntPtr.Zero) return null;
................................................................................
}
#endregion
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraint
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint constraint;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexOrderBy
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_orderby orderBy;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraintUsage
{
private SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_index_constraint_usage constraintUsage;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndex
{
SQLiteIndexConstraint[] Constraints;
................................................................................
double estimatedCost; /* Estimated cost of using this index */
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteVirtualTableCursor
{
internal SQLiteModuleBase.UnsafeNativeMethods2.sqlite3_vtab_cursor cursor;
}
///////////////////////////////////////////////////////////////////////////
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate int xFunc(
IntPtr pContext,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
IntPtr[] argv
);
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteNativeModule
{
SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
SQLiteErrorCode xDisconnect(IntPtr pVtab);
SQLiteErrorCode xDestroy(IntPtr pVtab);
SQLiteErrorCode xOpen(IntPtr pVtab, ref IntPtr pCursor);
SQLiteErrorCode xClose(IntPtr pCursor);
................................................................................
SQLiteErrorCode xColumn(IntPtr pCursor, IntPtr pContext, int index);
SQLiteErrorCode xRowId(IntPtr pCursor, ref long rowId);
SQLiteErrorCode xUpdate(IntPtr pVtab, int nData, ref IntPtr apData, ref long rowId);
SQLiteErrorCode xBegin(IntPtr pVtab);
SQLiteErrorCode xSync(IntPtr pVtab);
SQLiteErrorCode xCommit(IntPtr pVtab);
SQLiteErrorCode xRollback(IntPtr pVtab);
SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref xFunc pxFunc, ref IntPtr ppArg);
SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
................................................................................
SQLiteErrorCode Savepoint(int iSavepoint);
SQLiteErrorCode Release(int iSavepoint);
SQLiteErrorCode RollbackTo(int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
#if NET_40
[SecurityCritical()]
#else
[SecurityPermission(SecurityAction.LinkDemand, UnmanagedCode = true)]
#endif
public abstract class SQLiteModuleBase : ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
private static Encoding Utf8Encoding = Encoding.UTF8;
#region Unsafe Native Methods Class
[SuppressUnmanagedCodeSecurity()]
internal static class UnsafeNativeMethods2
{
// https://www.sqlite.org/vtab.html
[StructLayout(LayoutKind.Sequential)]
public struct sqlite3_module
{
public int iVersion;
public xCreate xCreate;
public xConnect xConnect;
public xBestIndex xBestIndex;
public xDisconnect xDisconnect;
public xDestroy xDestroy;
public xOpen xOpen;
public xClose xClose;
public xFilter xFilter;
public xNext xNext;
public xEof xEof;
public xColumn xColumn;
public xRowId xRowId;
public xUpdate xUpdate;
public xBegin xBegin;
public xSync xSync;
public xCommit xCommit;
public xRollback xRollback;
public xFindFunction xFindFunction;
public xRename xRename;
/* The methods above are in version 1 of the sqlite3_module
* object. Those below are for version 2 and greater. */
public xSavepoint xSavepoint;
public xRelease xRelease;
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)]
public delegate SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDisconnect(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xDestroy(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xOpen(
IntPtr pVtab,
ref IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xClose(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFilter(
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xNext(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xEof(
IntPtr pCursor
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xColumn(
IntPtr pCursor,
IntPtr pContext,
int index
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRowId(
IntPtr pCursor,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xUpdate(
IntPtr pVtab,
int nData,
ref IntPtr apData,
ref long rowId
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xBegin(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSync(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xCommit(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollback(
IntPtr pVtab
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref xFunc pxFunc,
ref IntPtr ppArg
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xSavepoint(
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRelease(
IntPtr pVtab,
int iSavepoint
);
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
public delegate SQLiteErrorCode xRollbackTo(
IntPtr pVtab,
int iSavepoint
);
private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;
private static readonly int SQLITE_INDEX_CONSTRAINT_LT = 16;
private static readonly int SQLITE_INDEX_CONSTRAINT_GE = 32;
private static readonly int SQLITE_INDEX_CONSTRAINT_MATCH = 64;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region Private Methods
private UnsafeNativeMethods2.sqlite3_module CreateNativeModule()
{
UnsafeNativeMethods2.sqlite3_module module =
new UnsafeNativeMethods2.sqlite3_module();
module.iVersion = 2;
module.xCreate = new UnsafeNativeMethods2.xCreate(xCreate);
module.xConnect = new UnsafeNativeMethods2.xConnect(xConnect);
module.xBestIndex = new UnsafeNativeMethods2.xBestIndex(xBestIndex);
module.xDisconnect = new UnsafeNativeMethods2.xDisconnect(xDisconnect);
module.xDestroy = new UnsafeNativeMethods2.xDestroy(xDestroy);
module.xOpen = new UnsafeNativeMethods2.xOpen(xOpen);
module.xClose = new UnsafeNativeMethods2.xClose(xClose);
module.xFilter = new UnsafeNativeMethods2.xFilter(xFilter);
module.xNext = new UnsafeNativeMethods2.xNext(xNext);
module.xEof = new UnsafeNativeMethods2.xEof(xEof);
module.xColumn = new UnsafeNativeMethods2.xColumn(xColumn);
module.xRowId = new UnsafeNativeMethods2.xRowId(xRowId);
module.xUpdate = new UnsafeNativeMethods2.xUpdate(xUpdate);
module.xBegin = new UnsafeNativeMethods2.xBegin(xBegin);
module.xSync = new UnsafeNativeMethods2.xSync(xSync);
module.xCommit = new UnsafeNativeMethods2.xCommit(xCommit);
module.xRollback = new UnsafeNativeMethods2.xRollback(xRollback);
module.xFindFunction = new UnsafeNativeMethods2.xFindFunction(xFindFunction);
module.xRename = new UnsafeNativeMethods2.xRename(xRename);
module.xSavepoint = new UnsafeNativeMethods2.xSavepoint(xSavepoint);
module.xRelease = new UnsafeNativeMethods2.xRelease(xRelease);
module.xRollbackTo = new UnsafeNativeMethods2.xRollbackTo(xRollbackTo);
return module;
}
private static int ThirtyBits = 0x3fffffff;
///////////////////////////////////////////////////////////////////////
................................................................................
///////////////////////////////////////////////////////////////////////
private static string GetStringFromUtf8Bytes(byte[] bytes)
{
if (bytes == null)
return null;
return Utf8Encoding.GetString(bytes);
}
///////////////////////////////////////////////////////////////////////
private static IntPtr Allocate(int size)
{
return UnsafeNativeMethods.sqlite3_malloc(size);
................................................................................
///////////////////////////////////////////////////////////////////////
#region Protected Members
protected virtual IntPtr AllocateTable()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods2.sqlite3_vtab));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeTable(IntPtr pVtab)
................................................................................
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr AllocateCursor()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods2.sqlite3_vtab_cursor));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr GetTableFromCursor(
................................................................................
protected virtual SQLiteVirtualTableCursor MarshalCursorFromIntPtr(
IntPtr pCursor
)
{
if (pCursor == IntPtr.Zero)
return null;
SQLiteVirtualTableCursor result = new SQLiteVirtualTableCursor();
Marshal.PtrToStructure(pCursor, result.cursor);
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr MarshalCursorToIntPtr(
................................................................................
try
{
result = AllocateCursor();
if (result != IntPtr.Zero)
{
Marshal.StructureToPtr(cursor.cursor, result, false);
success = true;
}
}
finally
{
if (!success && (result != IntPtr.Zero))
{
................................................................................
}
return sqliteBase.DeclareVirtualTable(this, sql, ref error);
}
///////////////////////////////////////////////////////////////////////
protected virtual bool SetTableError(
IntPtr pVtab,
string error
)
{
if (pVtab == IntPtr.Zero)
return false;
int offset = Marshal.SizeOf(typeof(
UnsafeNativeMethods2.sqlite3_module)) + sizeof(int);
IntPtr pError = Marshal.ReadIntPtr(pVtab, offset);
if (pError != IntPtr.Zero)
{
Free(pError); pError = IntPtr.Zero;
Marshal.WriteIntPtr(pVtab, offset, pError);
}
Marshal.WriteIntPtr(pVtab, offset, Utf8IntPtrFromString(error));
return true;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
................................................................................
///////////////////////////////////////////////////////////////////////
public SQLiteErrorCode xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref xFunc pxFunc,
ref IntPtr ppArg
)
{
return SQLiteErrorCode.Ok;
}
///////////////////////////////////////////////////////////////////////
|
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///////////////////////////////////////////////////////////////////////
public void SetDouble(double value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
#if !PLATFORM_COMPACTFRAMEWORK
UnsafeNativeMethods.sqlite3_result_double(pContext, value);
#else
UnsafeNativeMethods.sqlite3_result_double_interop(pContext, ref value);
#endif
}
///////////////////////////////////////////////////////////////////////
public void SetInt(int value)
{
if (pContext == IntPtr.Zero)
................................................................................
///////////////////////////////////////////////////////////////////////
public void SetInt64(long value)
{
if (pContext == IntPtr.Zero)
throw new InvalidOperationException();
#if !PLATFORM_COMPACTFRAMEWORK
UnsafeNativeMethods.sqlite3_result_int64(pContext, value);
#else
UnsafeNativeMethods.sqlite3_result_int64_interop(pContext, ref value);
#endif
}
///////////////////////////////////////////////////////////////////////
public void SetString(string value)
{
if (pContext == IntPtr.Zero)
................................................................................
}
///////////////////////////////////////////////////////////////////////
public long GetInt64()
{
if (pValue == IntPtr.Zero) return default(long);
#if !PLATFORM_COMPACTFRAMEWORK
return UnsafeNativeMethods.sqlite3_value_int64(pValue);
#else
long value;
UnsafeNativeMethods.sqlite3_value_int64_interop(pValue, out value);
return value;
#endif
}
///////////////////////////////////////////////////////////////////////
public double GetDouble()
{
if (pValue == IntPtr.Zero) return default(double);
#if !PLATFORM_COMPACTFRAMEWORK
return UnsafeNativeMethods.sqlite3_value_double(pValue);
#else
double value;
UnsafeNativeMethods.sqlite3_value_double_interop(pValue, out value);
return value;
#endif
}
///////////////////////////////////////////////////////////////////////
public string GetString()
{
if (pValue == IntPtr.Zero) return null;
................................................................................
}
#endregion
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraint
{
private UnsafeNativeMethods.sqlite3_index_constraint constraint;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexOrderBy
{
private UnsafeNativeMethods.sqlite3_index_orderby orderBy;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndexConstraintUsage
{
private UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage;
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteIndex
{
SQLiteIndexConstraint[] Constraints;
................................................................................
double estimatedCost; /* Estimated cost of using this index */
}
///////////////////////////////////////////////////////////////////////////
public class SQLiteVirtualTableCursor
{
public SQLiteVirtualTableCursor(
IntPtr nativeHandle
)
{
this.nativeHandle = nativeHandle;
}
///////////////////////////////////////////////////////////////////////
private IntPtr nativeHandle;
public IntPtr NativeHandle
{
get { return nativeHandle; }
}
}
///////////////////////////////////////////////////////////////////////////
public interface ISQLiteNativeModule
{
// https://www.sqlite.org/vtab.html
SQLiteErrorCode xCreate(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xConnect(IntPtr pDb, IntPtr pAux, int argc, ref IntPtr[] argv, ref IntPtr pVtab, ref IntPtr pError);
SQLiteErrorCode xBestIndex(IntPtr pVtab, IntPtr index);
SQLiteErrorCode xDisconnect(IntPtr pVtab);
SQLiteErrorCode xDestroy(IntPtr pVtab);
SQLiteErrorCode xOpen(IntPtr pVtab, ref IntPtr pCursor);
SQLiteErrorCode xClose(IntPtr pCursor);
................................................................................
SQLiteErrorCode xColumn(IntPtr pCursor, IntPtr pContext, int index);
SQLiteErrorCode xRowId(IntPtr pCursor, ref long rowId);
SQLiteErrorCode xUpdate(IntPtr pVtab, int nData, ref IntPtr apData, ref long rowId);
SQLiteErrorCode xBegin(IntPtr pVtab);
SQLiteErrorCode xSync(IntPtr pVtab);
SQLiteErrorCode xCommit(IntPtr pVtab);
SQLiteErrorCode xRollback(IntPtr pVtab);
SQLiteErrorCode xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref IntPtr pxFunc, ref IntPtr ppArg);
SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);
SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);
SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
................................................................................
SQLiteErrorCode Savepoint(int iSavepoint);
SQLiteErrorCode Release(int iSavepoint);
SQLiteErrorCode RollbackTo(int iSavepoint);
}
///////////////////////////////////////////////////////////////////////////
public abstract class SQLiteModuleBase :
ISQLiteManagedModule, ISQLiteNativeModule, IDisposable
{
private static Encoding Utf8Encoding = Encoding.UTF8;
///////////////////////////////////////////////////////////////////////
#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 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);
................................................................................
///////////////////////////////////////////////////////////////////////
#region Protected Members
protected virtual IntPtr AllocateTable()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual void FreeTable(IntPtr pVtab)
................................................................................
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr AllocateCursor()
{
int size = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_vtab_cursor));
return Allocate(size);
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr GetTableFromCursor(
................................................................................
protected virtual SQLiteVirtualTableCursor MarshalCursorFromIntPtr(
IntPtr pCursor
)
{
if (pCursor == IntPtr.Zero)
return null;
SQLiteVirtualTableCursor result =
new SQLiteVirtualTableCursor(pCursor);
// Marshal.PtrToStructure(pCursor, result.cursor);
return result;
}
///////////////////////////////////////////////////////////////////////
protected virtual IntPtr MarshalCursorToIntPtr(
................................................................................
try
{
result = AllocateCursor();
if (result != IntPtr.Zero)
{
// Marshal.StructureToPtr(cursor.cursor, result, false);
success = true;
}
}
finally
{
if (!success && (result != IntPtr.Zero))
{
................................................................................
}
return sqliteBase.DeclareVirtualTable(this, sql, ref error);
}
///////////////////////////////////////////////////////////////////////
#if PLATFORM_COMPACTFRAMEWORK
protected virtual IntPtr IntPtrForOffset(
IntPtr pointer,
int offset
)
{
return new IntPtr(pointer.ToInt64() + offset);
}
#endif
///////////////////////////////////////////////////////////////////////
protected virtual bool SetTableError(
IntPtr pVtab,
string error
)
{
if (pVtab == IntPtr.Zero)
return false;
int offset = Marshal.SizeOf(typeof(
UnsafeNativeMethods.sqlite3_module)) + sizeof(int);
#if !PLATFORM_COMPACTFRAMEWORK
IntPtr pError = Marshal.ReadIntPtr(pVtab, offset);
#else
IntPtr pError = Marshal.ReadIntPtr(IntPtrForOffset(pVtab, offset));
#endif
if (pError != IntPtr.Zero)
{
Free(pError); pError = IntPtr.Zero;
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pVtab, offset, pError);
#else
Marshal.WriteIntPtr(IntPtrForOffset(pVtab, offset), pError);
#endif
}
#if !PLATFORM_COMPACTFRAMEWORK
Marshal.WriteIntPtr(pVtab, offset, Utf8IntPtrFromString(error));
#else
Marshal.WriteIntPtr(IntPtrForOffset(pVtab, offset),
Utf8IntPtrFromString(error));
#endif
return true;
}
#endregion
///////////////////////////////////////////////////////////////////////
#region ISQLiteNativeModule Members
................................................................................
///////////////////////////////////////////////////////////////////////
public SQLiteErrorCode xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref IntPtr pxFunc,
ref IntPtr ppArg
)
{
return SQLiteErrorCode.Ok;
}
///////////////////////////////////////////////////////////////////////
|
Changes to System.Data.SQLite/System.Data.SQLite.Files.targets.
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..
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<Compile Include="SQLiteException.cs" />
<Compile Include="SQLiteFactory.cs" />
<Compile Include="SQLiteFunction.cs" />
<Compile Include="SQLiteFunctionAttribute.cs" />
<Compile Include="SQLiteKeyReader.cs" />
<Compile Include="SQLiteLog.cs" />
<Compile Include="SQLiteMetaDataCollectionNames.cs" />
<Compile Include="SQLiteParameter.cs" />
<Compile Include="SQLiteParameterCollection.cs" />
<Compile Include="SQLiteStatement.cs" />
<Compile Include="SQLiteTransaction.cs" />
<Compile Include="SR.Designer.cs">
<DependentUpon>SR.resx</DependentUpon>
<AutoGen>True</AutoGen>
................................................................................
******************************************************************************
** Core Files (Full Framework) **
******************************************************************************
-->
<ItemGroup Condition="'$(IsCompactFramework)' == 'false'">
<Compile Include="SQLiteEnlistment.cs" />
<Compile Include="SQLiteModuleBase.cs" />
<Compile Include="SQLiteModuleNoop.cs" />
<Compile Condition="'$(NetFx35)' != 'false' Or
'$(NetFx40)' != 'false' Or
'$(NetFx45)' != 'false'"
Include="LINQ\SQLiteConnection_Linq.cs">
<SubType>Component</SubType>
</Compile>
<Compile Condition="'$(NetFx35)' != 'false' Or
|
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>
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<Compile Include="SQLiteException.cs" />
<Compile Include="SQLiteFactory.cs" />
<Compile Include="SQLiteFunction.cs" />
<Compile Include="SQLiteFunctionAttribute.cs" />
<Compile Include="SQLiteKeyReader.cs" />
<Compile Include="SQLiteLog.cs" />
<Compile Include="SQLiteMetaDataCollectionNames.cs" />
<Compile Include="SQLiteModuleBase.cs" />
<Compile Include="SQLiteModuleNoop.cs" />
<Compile Include="SQLiteParameter.cs" />
<Compile Include="SQLiteParameterCollection.cs" />
<Compile Include="SQLiteStatement.cs" />
<Compile Include="SQLiteTransaction.cs" />
<Compile Include="SR.Designer.cs">
<DependentUpon>SR.resx</DependentUpon>
<AutoGen>True</AutoGen>
................................................................................
******************************************************************************
** Core Files (Full Framework) **
******************************************************************************
-->
<ItemGroup Condition="'$(IsCompactFramework)' == 'false'">
<Compile Include="SQLiteEnlistment.cs" />
<Compile Condition="'$(NetFx35)' != 'false' Or
'$(NetFx40)' != 'false' Or
'$(NetFx45)' != 'false'"
Include="LINQ\SQLiteConnection_Linq.cs">
<SubType>Component</SubType>
</Compile>
<Compile Condition="'$(NetFx35)' != 'false' Or
|
Changes to System.Data.SQLite/UnsafeNativeMethods.cs.
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#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern int sqlite3_backup_pagecount(IntPtr backup);
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate void xDestroyModule(IntPtr pClientData);
#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern SQLiteErrorCode sqlite3_create_module_v2(IntPtr db, IntPtr name, IntPtr pModule, IntPtr pClientData, xDestroyModule xDestroy);
................................................................................
#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern IntPtr sqlite3_mprintf(IntPtr format, __arglist);
#endregion
}
#if PLATFORM_COMPACTFRAMEWORK
internal abstract class CriticalHandle : IDisposable
{
private bool _isClosed;
protected IntPtr handle;
|
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|
#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern int sqlite3_backup_pagecount(IntPtr backup);
#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern SQLiteErrorCode sqlite3_create_module_v2(IntPtr db, IntPtr name, IntPtr pModule, IntPtr pClientData, xDestroyModule xDestroy);
................................................................................
#if !PLATFORM_COMPACTFRAMEWORK
[DllImport(SQLITE_DLL, CallingConvention = CallingConvention.Cdecl)]
#else
[DllImport(SQLITE_DLL)]
#endif
internal static extern IntPtr sqlite3_mprintf(IntPtr format, __arglist);
#endregion
///////////////////////////////////////////////////////////////////////////
#region Native Delegates
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xCreate(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xConnect(
IntPtr pDb,
IntPtr pAux,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
ref IntPtr[] argv,
ref IntPtr pVtab,
ref IntPtr pError
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xBestIndex(
IntPtr pVtab,
IntPtr index
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xDisconnect(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xDestroy(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xOpen(
IntPtr pVtab,
ref IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xClose(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xFilter(
IntPtr pCursor,
int idxNum,
IntPtr idxStr,
int argc,
IntPtr[] argv
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xNext(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xEof(
IntPtr pCursor
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xColumn(
IntPtr pCursor,
IntPtr pContext,
int index
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xRowId(
IntPtr pCursor,
ref long rowId
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xUpdate(
IntPtr pVtab,
int nData,
ref IntPtr apData,
ref long rowId
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xBegin(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xSync(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xCommit(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xRollback(
IntPtr pVtab
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xFindFunction(
IntPtr pVtab,
int nArg,
IntPtr zName,
ref IntPtr pxFunc,
ref IntPtr ppArg
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xRename(
IntPtr pVtab,
IntPtr zNew
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xSavepoint(
IntPtr pVtab,
int iSavepoint
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xRelease(
IntPtr pVtab,
int iSavepoint
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate SQLiteErrorCode xRollbackTo(
IntPtr pVtab,
int iSavepoint
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate int xFunc(
IntPtr pContext,
int argc,
[MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 1)]
IntPtr[] argv
);
///////////////////////////////////////////////////////////////////////////
#if !PLATFORM_COMPACTFRAMEWORK
[UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
public delegate void xDestroyModule(IntPtr pClientData);
#endregion
///////////////////////////////////////////////////////////////////////////
#region Native Structures
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_module
{
public int iVersion;
public xCreate xCreate;
public xConnect xConnect;
public xBestIndex xBestIndex;
public xDisconnect xDisconnect;
public xDestroy xDestroy;
public xOpen xOpen;
public xClose xClose;
public xFilter xFilter;
public xNext xNext;
public xEof xEof;
public xColumn xColumn;
public xRowId xRowId;
public xUpdate xUpdate;
public xBegin xBegin;
public xSync xSync;
public xCommit xCommit;
public xRollback xRollback;
public xFindFunction xFindFunction;
public xRename xRename;
/* The methods above are in version 1 of the sqlite3_module
* object. Those below are for version 2 and greater. */
public xSavepoint xSavepoint;
public xRelease xRelease;
public xRollbackTo xRollbackTo;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_vtab
{
[MarshalAs(UnmanagedType.LPStruct)]
public sqlite3_module pModule;
public int nRef; /* NO LONGER USED */
public IntPtr zErrMsg;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_vtab_cursor
{
[MarshalAs(UnmanagedType.LPStruct)]
public sqlite3_vtab pVTab;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_constraint
{
public int iColumn;
public byte op;
public byte usable;
public int iTermOffset;
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal struct sqlite3_index_orderby
{
public int iColumn; /* Column number */
public byte desc; /* True for DESC. False for ASC. */
}
///////////////////////////////////////////////////////////////////////////
[StructLayout(LayoutKind.Sequential)]
internal 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)]
internal 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 */
}
#endregion
///////////////////////////////////////////////////////////////////////////
private static readonly int SQLITE_INDEX_CONSTRAINT_EQ = 2;
private static readonly int SQLITE_INDEX_CONSTRAINT_GT = 4;
private static readonly int SQLITE_INDEX_CONSTRAINT_LE = 8;
private static readonly int SQLITE_INDEX_CONSTRAINT_LT = 16;
private static readonly int SQLITE_INDEX_CONSTRAINT_GE = 32;
private static readonly int SQLITE_INDEX_CONSTRAINT_MATCH = 64;
}
#if PLATFORM_COMPACTFRAMEWORK
internal abstract class CriticalHandle : IDisposable
{
private bool _isClosed;
protected IntPtr handle;
|