internal abstract CollationSequence GetCollationSequence(SqliteFunction func, IntPtr context);
internal override CollationSequence GetCollationSequence(SqliteFunction func, SqliteContextHandle context)
{
throw new NotImplementedException();
}
/// <summary>
/// Called by SQLiteBase derived classes, this function binds all user-defined functions to a connection.
/// It is done this way so that all user-defined functions will access the database using the same encoding scheme
/// as the connection (UTF-8 or UTF-16).
/// </summary>
/// <remarks>
/// The wrapper functions that interop with SQLite will create a unique cookie value, which internally is a pointer to
/// all the wrapped callback functions. The interop function uses it to map CDecl callbacks to StdCall callbacks.
/// </remarks>
/// <param name="sqlbase">The base object on which the functions are to bind</param>
/// <returns>Returns an array of functions which the connection object should retain until the connection is closed.</returns>
internal static SqliteFunction[] BindFunctions(SQLiteBase sqlbase)
{
SqliteFunction f;
List<SqliteFunction> lFunctions = new List<SqliteFunction>();
foreach (SqliteFunctionAttribute pr in _registeredFunctions)
{
f = (SqliteFunction)Activator.CreateInstance(pr._instanceType);
f._base = sqlbase;
f._InvokeFunc = (pr.FuncType == FunctionType.Scalar) ? new SQLiteCallback(f.ScalarCallback) : null;
f._StepFunc = (pr.FuncType == FunctionType.Aggregate) ? new SQLiteCallback(f.StepCallback) : null;
f._FinalFunc = (pr.FuncType == FunctionType.Aggregate) ? new SQLiteFinalCallback(f.FinalCallback) : null;
f._CompareFunc = (pr.FuncType == FunctionType.Collation) ? new SQLiteCollation(f.CompareCallback) : null;
f._CompareFunc16 = (pr.FuncType == FunctionType.Collation) ? new SQLiteCollation(f.CompareCallback16) : null;
if (pr.FuncType != FunctionType.Collation)
sqlbase.CreateFunction(pr.Name, pr.Arguments, (f is SqliteFunctionEx), f._InvokeFunc, f._StepFunc, f._FinalFunc);
else
sqlbase.CreateCollation(pr.Name, f._CompareFunc, f._CompareFunc16);
lFunctions.Add(f);
}
SqliteFunction[] arFunctions = new SqliteFunction[lFunctions.Count];
lFunctions.CopyTo(arFunctions, 0);
return arFunctions;
}
internal override CollationSequence GetCollationSequence(SqliteFunction func, IntPtr context)
{
#if !SQLITE_STANDARD
CollationSequence seq = new CollationSequence();
int len;
int type;
int enc;
IntPtr p = UnsafeNativeMethods.sqlite3_context_collseq(context, out type, out enc, out len);
if (p != null) seq.Name = UTF8ToString(p, len);
seq.Type = (CollationTypeEnum)type;
seq._func = func;
seq.Encoding = (CollationEncodingEnum)enc;
return seq;
#else
throw new NotImplementedException();
#endif
}
internal abstract CollationSequence GetCollationSequence(SqliteFunction func, IntPtr context);
internal abstract CollationSequence GetCollationSequence(SqliteFunction func, SqliteContextHandle context);
internal override CollationSequence GetCollationSequence(SqliteFunction func, SqliteContextHandle context)
{
throw new NotImplementedException();
}