private IEnumerable <int> _screen(SqlConnection conn, byte[] fp, int?next_after_storate_id,
screenInBlockDelegate screenInBlockFunc)
{
// Find ones
List <int> fp_ones = new List <int>();
for (int i = 0; i < _fp_bytes; i++)
{
byte b = fp[i];
for (int j = 0; j < 8; j++)
{
if ((b & (1 << j)) != 0)
{
fp_ones.Add(8 * i + j);
}
}
}
byte[] working_chunk1 = new byte[_chunk_bytes];
byte[] working_chunk2 = new byte[_chunk_bytes];
// Screen
foreach (Block block in _all_blocks)
{
List <int> results = null;
_validateBlockIndices(conn, block);
results = screenInBlockFunc(fp_ones, block, working_chunk1, working_chunk2, conn);
foreach (int index in results)
{
yield return(index);
}
}
}
public IEnumerable <int> screenSub(SqlConnection conn, byte[] fp, int?next_after_storate_id)
{
screenInBlockDelegate screenBlockSub =
new screenInBlockDelegate(
(List <int> fp_ones, Block block, byte[] chunk, byte[] chunk2, SqlConnection conn2) =>
_screenInBlockSub(fp_ones, block, chunk, chunk2, conn2, next_after_storate_id));
return(_screen(conn, fp, next_after_storate_id, screenBlockSub));
}
private IEnumerable<int> _screen (SqlConnection conn, byte[] fp, int? next_after_storate_id,
screenInBlockDelegate screenInBlockFunc)
{
// Find ones
List<int> fp_ones = new List<int>();
for (int i = 0; i < _fp_bytes; i++)
{
byte b = fp[i];
for (int j = 0; j < 8; j++)
if ((b & (1 << j)) != 0)
fp_ones.Add(8 * i + j);
}
byte[] working_chunk1 = new byte[_chunk_bytes];
byte[] working_chunk2 = new byte[_chunk_bytes];
// Screen
foreach (Block block in _all_blocks)
{
List<int> results = null;
_validateBlockIndices(conn, block);
results = screenInBlockFunc(fp_ones, block, working_chunk1, working_chunk2, conn);
foreach (int index in results)
yield return index;
}
}
public IEnumerable<int> screenSim (SqlConnection conn, byte[] fp,
int? next_after_storate_id, getBoundsDelegate boundsDelegate)
{
screenInBlockDelegate screenBlockSim =
new screenInBlockDelegate(
(List<int> fp_ones, Block block, byte[] chunk, byte[] chunk2, SqlConnection conn2) =>
_screenInBlockSim(fp_ones, block, chunk, chunk2, conn2, boundsDelegate, next_after_storate_id));
return _screen(conn, fp, next_after_storate_id, screenBlockSim);
}
