System.Data.SQLite
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Overview
Comment:Fix xCreate and xConnect delegate signatures. Finish marshalling of the sqlite3_index_info structure.
Downloads: Tarball | ZIP archive | SQL archive
Timelines: family | ancestors | descendants | both | virtualTables
Files: files | file ages | folders
SHA1: 7461bf423f2ef22d8ec30acd20d9912d9ccce731
User & Date: mistachkin 2013-06-18 20:39:06
Context
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
06:12
Fix compilation errors for the .NET Compact Framework build. check-in: e64388aacd user: mistachkin tags: virtualTables
Changes
Hide Diffs Unified Diffs Ignore Whitespace Patch

Changes to System.Data.SQLite/SQLiteModuleBase.cs.

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        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////


    /* [Flags()] */
    public enum SQLiteIndexConstraintOp : byte
    {
        EqualTo = 2,
        GreaterThan = 4,
        LessThanOrEqualTo = 8,
        LessThan = 16,
        GreaterThanOrEqualTo = 32,
        Match = 64
    }


    ///////////////////////////////////////////////////////////////////////////


    public sealed class SQLiteIndexConstraint
    {


        private UnsafeNativeMethods.sqlite3_index_constraint constraint;





    }















































































    ///////////////////////////////////////////////////////////////////////////


    public sealed class SQLiteIndexOrderBy
    {


        private UnsafeNativeMethods.sqlite3_index_orderby orderBy;




    }



























    ///////////////////////////////////////////////////////////////////////////

    public sealed class SQLiteIndexConstraintUsage
    {
        private UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage;
    }

    ///////////////////////////////////////////////////////////////////////////

    public sealed class SQLiteIndexInputs
    {

        public SQLiteIndexInputs(int nConstraint, int nOrderBy)
        {
            constraints = new SQLiteIndexConstraint[nConstraint];
            orderBys = new SQLiteIndexOrderBy[nOrderBy];
        }


        ///////////////////////////////////////////////////////////////////////


        private SQLiteIndexConstraint[] constraints;
        public SQLiteIndexConstraint[] Constraints
        {
            get { return constraints; }
        }

        ///////////////////////////////////////////////////////////////////////

        private SQLiteIndexOrderBy[] orderBys;
        public SQLiteIndexOrderBy[] OrderBys
        {
            get { return orderBys; }
        }

    }


    ///////////////////////////////////////////////////////////////////////////


    public sealed class SQLiteIndexOutputs
    {

        public SQLiteIndexOutputs(int nConstraint)
        {
            constraintUsages = new SQLiteIndexConstraintUsage[nConstraint];
        }


        ///////////////////////////////////////////////////////////////////////


        private SQLiteIndexConstraintUsage[] constraintUsages;
        public SQLiteIndexConstraintUsage[] ConstraintUsages
        {
            get { return constraintUsages; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int idxNum; /* Number used to identify the index */
        public int IdxNum
        {
            get { return idxNum; }
            set { idxNum = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private string idxStr; /* String, possibly obtained from sqlite3_malloc */
        public string IdxStr
        {
            get { return idxStr; }
            set { idxStr = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int needToFreeIdxStr; /* Free idxStr using sqlite3_free() if true */
        public int NeedToFreeIdxStr
        {
            get { return needToFreeIdxStr; }
            set { needToFreeIdxStr = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int orderByConsumed; /* True if output is already ordered */
        public int OrderByConsumed
        {
            get { return orderByConsumed; }
            set { orderByConsumed = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private double estimatedCost; /* Estimated cost of using this index */
        public double EstimatedCost
        {
            get { return estimatedCost; }
            set { estimatedCost = value; }
        }

    }


    ///////////////////////////////////////////////////////////////////////////


    public sealed class SQLiteIndex
    {

        public SQLiteIndex(int nConstraint, int nOrderBy)
        {
            inputs = new SQLiteIndexInputs(nConstraint, nOrderBy);
            outputs = new SQLiteIndexOutputs(nConstraint);
        }


        ///////////////////////////////////////////////////////////////////////


        private SQLiteIndexInputs inputs;
        public SQLiteIndexInputs Inputs
        {
            get { return inputs; }
        }

        ///////////////////////////////////////////////////////////////////////

        private SQLiteIndexOutputs outputs;
        public SQLiteIndexOutputs Outputs
        {
            get { return outputs; }
        }

    }


    ///////////////////////////////////////////////////////////////////////////


    public class SQLiteVirtualTableCursor : ISQLiteNativeHandle
    {
        #region Public Constructors
        public SQLiteVirtualTableCursor(
            IntPtr nativeHandle
            )
        {
................................................................................
        private IntPtr nativeHandle;
        public IntPtr NativeHandle
        {
            get { return nativeHandle; }
        }
        #endregion
    }


    ///////////////////////////////////////////////////////////////////////////


    public interface ISQLiteNativeHandle
    {
        IntPtr NativeHandle { get; }
    }


    ///////////////////////////////////////////////////////////////////////////


    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 pIndex);






        SQLiteErrorCode xDisconnect(IntPtr pVtab);





        SQLiteErrorCode xDestroy(IntPtr pVtab);





        SQLiteErrorCode xOpen(IntPtr pVtab, ref IntPtr pCursor);






        SQLiteErrorCode xClose(IntPtr pCursor);





        SQLiteErrorCode xFilter(IntPtr pCursor, int idxNum, IntPtr idxStr, int argc, IntPtr[] argv);









        SQLiteErrorCode xNext(IntPtr pCursor);
        bool xEof(IntPtr pCursor);










        SQLiteErrorCode xColumn(IntPtr pCursor, IntPtr pContext, int index);







        SQLiteErrorCode xRowId(IntPtr pCursor, ref long rowId);






        SQLiteErrorCode xUpdate(IntPtr pVtab, int nData, IntPtr apData, ref long rowId);








        SQLiteErrorCode xBegin(IntPtr pVtab);





        SQLiteErrorCode xSync(IntPtr pVtab);





        SQLiteErrorCode xCommit(IntPtr pVtab);





        SQLiteErrorCode xRollback(IntPtr pVtab);









        bool xFindFunction(IntPtr pVtab, int nArg, IntPtr zName, ref SQLiteCallback callback, ref IntPtr pClientData);





        SQLiteErrorCode xRename(IntPtr pVtab, IntPtr zNew);






        SQLiteErrorCode xSavepoint(IntPtr pVtab, int iSavepoint);






        SQLiteErrorCode xRelease(IntPtr pVtab, int iSavepoint);






        SQLiteErrorCode xRollbackTo(IntPtr pVtab, int iSavepoint);



    }


    ///////////////////////////////////////////////////////////////////////////


    public interface ISQLiteManagedModule
    {
        bool Declared { get; }




        SQLiteErrorCode Create(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);








        SQLiteErrorCode Connect(SQLiteConnection connection, IntPtr pClientData, string[] argv, ref string error);







        SQLiteErrorCode BestIndex(SQLiteIndex index);





        SQLiteErrorCode Disconnect();



        SQLiteErrorCode Destroy();




        SQLiteErrorCode Open(ref SQLiteVirtualTableCursor cursor);





        SQLiteErrorCode Close(SQLiteVirtualTableCursor cursor);





        SQLiteErrorCode Filter(SQLiteVirtualTableCursor cursor, int idxNum, string idxStr, SQLiteValue[] argv);








        SQLiteErrorCode Next(SQLiteVirtualTableCursor cursor);





        bool Eof(SQLiteVirtualTableCursor cursor);





        SQLiteErrorCode Column(SQLiteVirtualTableCursor cursor, SQLiteContext context, int index);







        SQLiteErrorCode RowId(SQLiteVirtualTableCursor cursor, ref long rowId);





        SQLiteErrorCode Update(SQLiteValue[] values, ref long rowId);






        SQLiteErrorCode Begin();



        SQLiteErrorCode Sync();



        SQLiteErrorCode Commit();



        SQLiteErrorCode Rollback();






        bool FindFunction(int nArg, string zName, ref SQLiteFunction function, ref IntPtr pClientData);





        SQLiteErrorCode Rename(string zNew);





        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 =
................................................................................
            return module;
        }

        private static int ThirtyBits = 0x3fffffff;

        ///////////////////////////////////////////////////////////////////////

#if PLATFORM_COMPACTFRAMEWORK
        private static IntPtr IntPtrForOffset(
            IntPtr pointer,
            int offset
            )
        {
            return new IntPtr(pointer.ToInt64() + offset);
        }
#endif

        ///////////////////////////////////////////////////////////////////////

        private static int MarshalReadInt32(
            IntPtr pointer,
            int offset
            )
................................................................................
                result[index] = new SQLiteValue(values[index]);

            return result;
        }

        ///////////////////////////////////////////////////////////////////////

        private static void IndexFromIntPtr(

            IntPtr pIndex,
            ref UnsafeNativeMethods.sqlite3_index_info index
            )
        {








            if (pIndex == IntPtr.Zero)
                return;

            Type type = typeof(UnsafeNativeMethods.sqlite3_index_info);


            int nConstraint = MarshalReadInt32(pIndex, 0);













            int nOrderBy = MarshalReadInt32(pIndex, sizeof(int) + IntPtr.Size);











































        }



















        ///////////////////////////////////////////////////////////////////////

        private static void IndexOutputsToIntPtr(


































































            UnsafeNativeMethods.sqlite3_index_info index,










            SQLiteIndexOutputs indexOutputs

            )


        {











        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Public Constructors
        public SQLiteModuleBase()
................................................................................
        ///////////////////////////////////////////////////////////////////////

        #region ISQLiteNativeModule Members
        public SQLiteErrorCode xCreate(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            ref IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            )
        {
            try
            {
                using (SQLiteConnection connection = new SQLiteConnection(
................................................................................

        ///////////////////////////////////////////////////////////////////////

        public SQLiteErrorCode xConnect(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            ref IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            )
        {
            try
            {
                using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
        public SQLiteErrorCode xBestIndex(
            IntPtr pVtab,
            IntPtr pIndex
            )
        {
            try
            {







                if (BestIndex(null) == SQLiteErrorCode.Ok)
                {

                    return SQLiteErrorCode.Ok;
                }
            }
            catch (Exception e) /* NOTE: Must catch ALL. */
            {
                SetTableError(pVtab, e.ToString());
            }
................................................................................
        #region Destructor
        ~SQLiteModuleBase()
        {
            Dispose(false);
        }
        #endregion
    }

}







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        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexConstraintOp Enumeration
    /* [Flags()] */
    public enum SQLiteIndexConstraintOp : byte
    {
        EqualTo = 2,
        GreaterThan = 4,
        LessThanOrEqualTo = 8,
        LessThan = 16,
        GreaterThanOrEqualTo = 32,
        Match = 64
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexConstraint Class
    public sealed class SQLiteIndexConstraint
    {
        #region Internal Constructors
        internal SQLiteIndexConstraint(
            UnsafeNativeMethods.sqlite3_index_constraint constraint
            )
            : this(constraint.iColumn, constraint.op, constraint.usable,
                   constraint.iTermOffset)
        {
            // do nothing.
        }
        #endregion

        //////////////////////////////////////////////////////////////////////

        #region Private Constructors
        private SQLiteIndexConstraint(
            int iColumn,
            SQLiteIndexConstraintOp op,
            byte usable,
            int iTermOffset
            )
        {
            this.iColumn = iColumn;
            this.op = op;
            this.usable = usable;
            this.iTermOffset = iTermOffset;
        }
        #endregion

        //////////////////////////////////////////////////////////////////////

        #region Public Fields
        public int iColumn;

        //////////////////////////////////////////////////////////////////////

        public SQLiteIndexConstraintOp op;

        //////////////////////////////////////////////////////////////////////

        public byte usable;

        //////////////////////////////////////////////////////////////////////

        public int iTermOffset;
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexOrderBy Class
    public sealed class SQLiteIndexOrderBy
    {
        #region Internal Constructors
        internal SQLiteIndexOrderBy(
            UnsafeNativeMethods.sqlite3_index_orderby orderBy
            )
            : this(orderBy.iColumn, orderBy.desc)
        {
            // do nothing.
        }
        #endregion

        //////////////////////////////////////////////////////////////////////

        #region Private Constructors
        private SQLiteIndexOrderBy(
            int iColumn,
            byte desc
            )
        {
            this.iColumn = iColumn;
            this.desc = desc;
        }
        #endregion

        //////////////////////////////////////////////////////////////////////

        #region Public Fields
        public int iColumn; /* Column number */

        //////////////////////////////////////////////////////////////////////

        public byte desc;   /* True for DESC.  False for ASC. */
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexConstraintUsage Class
    public sealed class SQLiteIndexConstraintUsage
    {
        #region Internal Constructors
        internal SQLiteIndexConstraintUsage(
            UnsafeNativeMethods.sqlite3_index_constraint_usage constraintUsage
            )
            : this(constraintUsage.argvIndex, constraintUsage.omit)
        {
            // do nothing.
        }
        #endregion

        //////////////////////////////////////////////////////////////////////

        #region Private Constructors
        private SQLiteIndexConstraintUsage(
            int argvIndex,
            byte omit
            )
        {
            this.argvIndex = argvIndex;
            this.omit = omit;
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Public Fields
        public int argvIndex;

        ///////////////////////////////////////////////////////////////////////

        public byte omit;
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexInputs Class






    public sealed class SQLiteIndexInputs
    {
        #region Internal Constructors
        internal SQLiteIndexInputs(int nConstraint, int nOrderBy)
        {
            constraints = new SQLiteIndexConstraint[nConstraint];
            orderBys = new SQLiteIndexOrderBy[nOrderBy];
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Public Properties
        private SQLiteIndexConstraint[] constraints;
        public SQLiteIndexConstraint[] Constraints
        {
            get { return constraints; }
        }

        ///////////////////////////////////////////////////////////////////////

        private SQLiteIndexOrderBy[] orderBys;
        public SQLiteIndexOrderBy[] OrderBys
        {
            get { return orderBys; }
        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndexOutputs Class
    public sealed class SQLiteIndexOutputs
    {
        #region Internal Constructors
        internal SQLiteIndexOutputs(int nConstraint)
        {
            constraintUsages = new SQLiteIndexConstraintUsage[nConstraint];
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Public Properties
        private SQLiteIndexConstraintUsage[] constraintUsages;
        public SQLiteIndexConstraintUsage[] ConstraintUsages
        {
            get { return constraintUsages; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int idxNum;
        public int IdxNum
        {
            get { return idxNum; }
            set { idxNum = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private string idxStr;
        public string IdxStr
        {
            get { return idxStr; }
            set { idxStr = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int needToFreeIdxStr;
        public int NeedToFreeIdxStr
        {
            get { return needToFreeIdxStr; }
            set { needToFreeIdxStr = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private int orderByConsumed;
        public int OrderByConsumed
        {
            get { return orderByConsumed; }
            set { orderByConsumed = value; }
        }

        ///////////////////////////////////////////////////////////////////////

        private double estimatedCost;
        public double EstimatedCost
        {
            get { return estimatedCost; }
            set { estimatedCost = value; }
        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteIndex Class
    public sealed class SQLiteIndex
    {
        #region Internal Constructors
        internal SQLiteIndex(int nConstraint, int nOrderBy)
        {
            inputs = new SQLiteIndexInputs(nConstraint, nOrderBy);
            outputs = new SQLiteIndexOutputs(nConstraint);
        }
        #endregion

        ///////////////////////////////////////////////////////////////////////

        #region Public Properties
        private SQLiteIndexInputs inputs;
        public SQLiteIndexInputs Inputs
        {
            get { return inputs; }
        }

        ///////////////////////////////////////////////////////////////////////

        private SQLiteIndexOutputs outputs;
        public SQLiteIndexOutputs Outputs
        {
            get { return outputs; }
        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region SQLiteVirtualTableCursor Class
    public class SQLiteVirtualTableCursor : ISQLiteNativeHandle
    {
        #region Public Constructors
        public SQLiteVirtualTableCursor(
            IntPtr nativeHandle
            )
        {
................................................................................
        private IntPtr nativeHandle;
        public IntPtr NativeHandle
        {
            get { return nativeHandle; }
        }
        #endregion
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region ISQLiteNativeHandle Interface
    public interface ISQLiteNativeHandle
    {
        IntPtr NativeHandle { get; }
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region ISQLiteNativeModule Interface
    public interface ISQLiteNativeModule
    {

        SQLiteErrorCode xCreate(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            );



        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xConnect(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xBestIndex(
            IntPtr pVtab,
            IntPtr pIndex
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xDisconnect(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xDestroy(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xOpen(
            IntPtr pVtab,
            ref IntPtr pCursor
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xClose(
            IntPtr pCursor
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xFilter(
            IntPtr pCursor,
            int idxNum,
            IntPtr idxStr,
            int argc,
            IntPtr[] argv
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xNext(
            IntPtr pCursor
            );

        ///////////////////////////////////////////////////////////////////////

        bool xEof(
            IntPtr pCursor
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xColumn(
            IntPtr pCursor,
            IntPtr pContext,
            int index
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xRowId(
            IntPtr pCursor,
            ref long rowId
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xUpdate(
            IntPtr pVtab,
            int nData,
            IntPtr apData,
            ref long rowId
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xBegin(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xSync(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xCommit(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xRollback(
            IntPtr pVtab
            );

        ///////////////////////////////////////////////////////////////////////

        bool xFindFunction(
            IntPtr pVtab,
            int nArg,
            IntPtr zName,
            ref SQLiteCallback callback,
            ref IntPtr pClientData
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xRename(
            IntPtr pVtab,
            IntPtr zNew
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xSavepoint(
            IntPtr pVtab,
            int iSavepoint
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xRelease(
            IntPtr pVtab,
            int iSavepoint
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode xRollbackTo(
            IntPtr pVtab,
            int iSavepoint
            );
    }
    #endregion

    ///////////////////////////////////////////////////////////////////////////

    #region ISQLiteManagedModule Interface
    public interface ISQLiteManagedModule
    {
        bool Declared { get; }

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Create(
            SQLiteConnection connection, /* in */
            IntPtr pClientData,          /* in */
            string[] argv,               /* in */
            ref string error             /* out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Connect(
            SQLiteConnection connection, /* in */
            IntPtr pClientData,          /* in */
            string[] argv,               /* in */
            ref string error             /* out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode BestIndex(
            SQLiteIndex index /* in, out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Disconnect();

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Destroy();

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Open(
            ref SQLiteVirtualTableCursor cursor /* out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Close(
            SQLiteVirtualTableCursor cursor /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Filter(
            SQLiteVirtualTableCursor cursor, /* in */
            int idxNum,                      /* in */
            string idxStr,                   /* in */
            SQLiteValue[] argv               /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Next(
            SQLiteVirtualTableCursor cursor /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        bool Eof(
            SQLiteVirtualTableCursor cursor /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Column(
            SQLiteVirtualTableCursor cursor, /* in */
            SQLiteContext context,           /* in */
            int index                        /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode RowId(
            SQLiteVirtualTableCursor cursor, /* in */
            ref long rowId                   /* out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Update(
            SQLiteValue[] values, /* in */
            ref long rowId        /* in, out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Begin();

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Sync();

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Commit();

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Rollback();

        ///////////////////////////////////////////////////////////////////////

        bool FindFunction(
            int nArg,                    /* in */
            string zName,                /* in */
            ref SQLiteFunction function, /* out */
            ref IntPtr pClientData       /* out */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Rename(
            string zNew /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Savepoint(
            int iSavepoint /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode Release(
            int iSavepoint /* in */
            );

        ///////////////////////////////////////////////////////////////////////

        SQLiteErrorCode RollbackTo(
            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 =
................................................................................
            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
            )
................................................................................
                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) ||
                (index.Outputs.ConstraintUsages == null))
            {
                return;
            }

            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 =
                    new UnsafeNativeMethods.sqlite3_index_constraint(
                        index.Inputs.Constraints[iConstraint]);

                Marshal.StructureToPtr(
                    constraint, IntPtrForOffset(pConstraint,
                    iConstraint * sizeOfConstraintType), false);

                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(
                        index.Inputs.OrderBys[iOrderBy]);

                Marshal.StructureToPtr(
                    orderBy, IntPtrForOffset(pOrderBy,
                    iOrderBy * sizeOfOrderByType), false);

                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(
                        index.Outputs.ConstraintUsages[iConstraint]);

                Marshal.StructureToPtr(
                    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 ISQLiteNativeModule Members
        public SQLiteErrorCode xCreate(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            )
        {
            try
            {
                using (SQLiteConnection connection = new SQLiteConnection(
................................................................................

        ///////////////////////////////////////////////////////////////////////

        public SQLiteErrorCode xConnect(
            IntPtr pDb,
            IntPtr pAux,
            int argc,
            IntPtr[] argv,
            ref IntPtr pVtab,
            ref IntPtr pError
            )
        {
            try
            {
                using (SQLiteConnection connection = new SQLiteConnection(
................................................................................
        public SQLiteErrorCode xBestIndex(
            IntPtr pVtab,
            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());
            }
................................................................................
        #region Destructor
        ~SQLiteModuleBase()
        {
            Dispose(false);
        }
        #endregion
    }
    #endregion
}

Changes to System.Data.SQLite/UnsafeNativeMethods.cs.

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    [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
................................................................................
    }

    ///////////////////////////////////////////////////////////////////////////

    [StructLayout(LayoutKind.Sequential)]
    internal struct sqlite3_index_constraint
    {
















        public int iColumn;
        public SQLiteIndexConstraintOp 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;
        [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
        public sqlite3_index_orderby[] aOrderBy;

        /* Outputs */
        [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 0)]
        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







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    [UnmanagedFunctionPointer(CallingConvention.Cdecl)]
#endif
    public delegate SQLiteErrorCode xCreate(
        IntPtr pDb,
        IntPtr pAux,
        int argc,
        [MarshalAs(UnmanagedType.LPArray, SizeParamIndex = 2)]
        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)]
        IntPtr[] argv,
        ref IntPtr pVtab,
        ref IntPtr pError
    );

    ///////////////////////////////////////////////////////////////////////////

#if !PLATFORM_COMPACTFRAMEWORK
................................................................................
    }

    ///////////////////////////////////////////////////////////////////////////

    [StructLayout(LayoutKind.Sequential)]
    internal struct sqlite3_index_constraint
    {
        public sqlite3_index_constraint(
            SQLiteIndexConstraint constraint
            )
            : this()
        {
            if (constraint != null)
            {
                iColumn = constraint.iColumn;
                op = constraint.op;
                usable = constraint.usable;
                iTermOffset = constraint.iTermOffset;
            }
        }

        ///////////////////////////////////////////////////////////////////////

        public int iColumn;
        public SQLiteIndexConstraintOp op;
        public byte usable;
        public int iTermOffset;
    }

    ///////////////////////////////////////////////////////////////////////////

    [StructLayout(LayoutKind.Sequential)]
    internal struct sqlite3_index_orderby
    {
        public sqlite3_index_orderby(
            SQLiteIndexOrderBy orderBy
            )
            : this()
        {
            if (orderBy != null)
            {
                iColumn = orderBy.iColumn;
                desc = orderBy.desc;
            }
        }

        ///////////////////////////////////////////////////////////////////////

        public int iColumn; /* Column number */
        public byte desc;   /* True for DESC.  False for ASC. */
    }

    ///////////////////////////////////////////////////////////////////////////

    [StructLayout(LayoutKind.Sequential)]
    internal struct sqlite3_index_constraint_usage
    {
        public sqlite3_index_constraint_usage(
            SQLiteIndexConstraintUsage constraintUsage
            )
            : this()
        {
            if (constraintUsage != null)
            {
                argvIndex = constraintUsage.argvIndex;
                omit = constraintUsage.omit;
            }
        }

        ///////////////////////////////////////////////////////////////////////

        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 */
        public IntPtr aConstraint;

        public int nOrderBy;


        public IntPtr aOrderBy;
        /* Outputs */

        public IntPtr 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