def decode(msg):
from hazelcast.sql import SqlColumnType, _SqlPage
# begin frame
msg.next_frame()
# read the "last" flag
is_last = LE_INT8.unpack_from(msg.next_frame().buf, 0)[0] == 1
# read column types
column_type_ids = ListIntegerCodec.decode(msg)
column_count = len(column_type_ids)
# read columns
columns = [None] * column_count
for i in range(column_count):
column_type_id = column_type_ids[i]
if column_type_id == SqlColumnType.VARCHAR:
columns[i] = ListMultiFrameCodec.decode_contains_nullable(
msg, StringCodec.decode)
elif column_type_id == SqlColumnType.BOOLEAN:
columns[i] = ListCNBooleanCodec.decode(msg)
elif column_type_id == SqlColumnType.TINYINT:
columns[i] = ListCNByteCodec.decode(msg)
elif column_type_id == SqlColumnType.SMALLINT:
columns[i] = ListCNShortCodec.decode(msg)
elif column_type_id == SqlColumnType.INTEGER:
columns[i] = ListCNIntegerCodec.decode(msg)
elif column_type_id == SqlColumnType.BIGINT:
columns[i] = ListCNLongCodec.decode(msg)
elif column_type_id == SqlColumnType.REAL:
columns[i] = ListCNFloatCodec.decode(msg)
elif column_type_id == SqlColumnType.DOUBLE:
columns[i] = ListCNDoubleCodec.decode(msg)
elif column_type_id == SqlColumnType.DATE:
columns[i] = ListCNLocalDateCodec.decode(msg)
elif column_type_id == SqlColumnType.TIME:
columns[i] = ListCNLocalTimeCodec.decode(msg)
elif column_type_id == SqlColumnType.TIMESTAMP:
columns[i] = ListCNLocalDateTimeCodec.decode(msg)
elif column_type_id == SqlColumnType.TIMESTAMP_WITH_TIME_ZONE:
columns[i] = ListCNOffsetDateTimeCodec.decode(msg)
elif column_type_id == SqlColumnType.DECIMAL:
columns[i] = ListMultiFrameCodec.decode_contains_nullable(
msg, BigDecimalCodec.decode)
elif column_type_id == SqlColumnType.NULL:
frame = msg.next_frame()
size = FixSizedTypesCodec.decode_int(frame.buf, 0)
column = [None for _ in range(size)]
columns[i] = column
elif column_type_id == SqlColumnType.OBJECT:
columns[i] = ListMultiFrameCodec.decode_contains_nullable(
msg, DataCodec.decode)
else:
raise ValueError("Unknown type %s" % column_type_id)
CodecUtil.fast_forward_to_end_frame(msg)
return _SqlPage(column_type_ids, columns, is_last)
def decode_byte(buf, offset):
return LE_INT8.unpack_from(buf, offset)[0]
def decode_boolean(buf, offset):
return LE_INT8.unpack_from(buf, offset)[0] == 1
def encode_byte(buf, offset, value):
LE_INT8.pack_into(buf, offset, value)
def encode_boolean(buf, offset, value):
if value:
LE_INT8.pack_into(buf, offset, 1)
else:
LE_INT8.pack_into(buf, offset, 0)