Author: Brian Kearns <bdkea...@gmail.com>
Branch:
Changeset: r63020:1e485fc86788
Date: 2013-04-04 16:54 -0400
http://bitbucket.org/pypy/pypy/changeset/1e485fc86788/
Log: also store row_cast_map on cursor not statement, don't call
row_factory unless row is actually fetched
diff --git a/lib_pypy/_sqlite3.py b/lib_pypy/_sqlite3.py
--- a/lib_pypy/_sqlite3.py
+++ b/lib_pypy/_sqlite3.py
@@ -377,7 +377,7 @@
self.maxcount = maxcount
self.cache = OrderedDict()
- def get(self, sql, row_factory):
+ def get(self, sql):
try:
stat = self.cache[sql]
except KeyError:
@@ -389,7 +389,6 @@
if stat._in_use:
stat = Statement(self.connection, sql)
self.cache[sql] = stat
- stat._row_factory = row_factory
return stat
@@ -552,7 +551,7 @@
@_check_thread_wrap
@_check_closed_wrap
def __call__(self, sql):
- return self._statement_cache.get(sql, self.row_factory)
+ return self._statement_cache.get(sql)
def cursor(self, factory=None):
self._check_thread()
@@ -881,20 +880,96 @@
return func(self, *args, **kwargs)
return wrapper
+ def __check_reset(self):
+ if self._reset:
+ raise InterfaceError(
+ "Cursor needed to be reset because of commit/rollback "
+ "and can no longer be fetched from.")
+
+ def __build_row_cast_map(self):
+ if not self.__connection._detect_types:
+ return
+ self.__row_cast_map = []
+ for i in
xrange(_lib.sqlite3_column_count(self.__statement._statement)):
+ converter = None
+
+ if self.__connection._detect_types & PARSE_COLNAMES:
+ colname =
_lib.sqlite3_column_name(self.__statement._statement, i)
+ if colname:
+ colname = _ffi.string(colname).decode('utf-8')
+ type_start = -1
+ key = None
+ for pos in range(len(colname)):
+ if colname[pos] == '[':
+ type_start = pos + 1
+ elif colname[pos] == ']' and type_start != -1:
+ key = colname[type_start:pos]
+ converter = converters[key.upper()]
+
+ if converter is None and self.__connection._detect_types &
PARSE_DECLTYPES:
+ decltype =
_lib.sqlite3_column_decltype(self.__statement._statement, i)
+ if decltype:
+ decltype = _ffi.string(decltype).decode('utf-8')
+ # if multiple words, use first, eg.
+ # "INTEGER NOT NULL" => "INTEGER"
+ decltype = decltype.split()[0]
+ if '(' in decltype:
+ decltype = decltype[:decltype.index('(')]
+ converter = converters.get(decltype.upper(), None)
+
+ self.__row_cast_map.append(converter)
+
+ def __fetch_one_row(self):
+ row = []
+ num_cols = _lib.sqlite3_data_count(self.__statement._statement)
+ for i in xrange(num_cols):
+ if self.__connection._detect_types:
+ converter = self.__row_cast_map[i]
+ else:
+ converter = None
+
+ if converter is not None:
+ blob = _lib.sqlite3_column_blob(self.__statement._statement, i)
+ if not blob:
+ val = None
+ else:
+ blob_len =
_lib.sqlite3_column_bytes(self.__statement._statement, i)
+ val = _ffi.buffer(blob, blob_len)[:]
+ val = converter(val)
+ else:
+ typ = _lib.sqlite3_column_type(self.__statement._statement, i)
+ if typ == _lib.SQLITE_NULL:
+ val = None
+ elif typ == _lib.SQLITE_INTEGER:
+ val =
_lib.sqlite3_column_int64(self.__statement._statement, i)
+ val = int(val)
+ elif typ == _lib.SQLITE_FLOAT:
+ val =
_lib.sqlite3_column_double(self.__statement._statement, i)
+ elif typ == _lib.SQLITE_TEXT:
+ text =
_lib.sqlite3_column_text(self.__statement._statement, i)
+ text_len =
_lib.sqlite3_column_bytes(self.__statement._statement, i)
+ val = _ffi.buffer(text, text_len)[:]
+ val = self.__connection.text_factory(val)
+ elif typ == _lib.SQLITE_BLOB:
+ blob =
_lib.sqlite3_column_blob(self.__statement._statement, i)
+ blob_len =
_lib.sqlite3_column_bytes(self.__statement._statement, i)
+ val = _BLOB_TYPE(_ffi.buffer(blob, blob_len))
+ row.append(val)
+ return tuple(row)
+
def __execute(self, multiple, sql, many_params):
self.__locked = True
+ self._reset = False
try:
del self.__next_row
except AttributeError:
pass
try:
- self._reset = False
if not isinstance(sql, basestring):
raise ValueError("operation parameter must be str or unicode")
self.__description = None
self.__rowcount = -1
- self.__statement = self.__connection._statement_cache.get(
- sql, self.row_factory)
+ self.__statement = self.__connection._statement_cache.get(sql)
if self.__connection._isolation_level is not None:
if self.__statement._kind == Statement._DDL:
@@ -920,8 +995,8 @@
self.__statement._reset()
if ret == _lib.SQLITE_ROW:
- self.__statement._build_row_cast_map()
- self.__next_row = self.__statement._readahead(self)
+ self.__build_row_cast_map()
+ self.__next_row = self.__fetch_one_row()
if self.__statement._kind == Statement._DML:
if self.__rowcount == -1:
@@ -982,12 +1057,6 @@
break
return self
- def __check_reset(self):
- if self._reset:
- raise self.__connection.InterfaceError(
- "Cursor needed to be reset because of commit/rollback "
- "and can no longer be fetched from.")
-
def __iter__(self):
return self
@@ -1005,12 +1074,15 @@
raise StopIteration
del self.__next_row
+ if self.row_factory is not None:
+ next_row = self.row_factory(self, next_row)
+
ret = _lib.sqlite3_step(self.__statement._statement)
if ret not in (_lib.SQLITE_DONE, _lib.SQLITE_ROW):
self.__statement._reset()
raise self.__connection._get_exception(ret)
elif ret == _lib.SQLITE_ROW:
- self.__next_row = self.__statement._readahead(self)
+ self.__next_row = self.__fetch_one_row()
return next_row
if sys.version_info[0] < 3:
@@ -1068,7 +1140,6 @@
self.__con._remember_statement(self)
self._in_use = False
- self._row_factory = None
if not isinstance(sql, basestring):
raise Warning("SQL is of wrong type. Must be string or unicode.")
@@ -1205,81 +1276,6 @@
else:
raise ValueError("parameters are of unsupported type")
- def _build_row_cast_map(self):
- if not self.__con._detect_types:
- return
- self.__row_cast_map = []
- for i in xrange(_lib.sqlite3_column_count(self._statement)):
- converter = None
-
- if self.__con._detect_types & PARSE_COLNAMES:
- colname = _lib.sqlite3_column_name(self._statement, i)
- if colname:
- colname = _ffi.string(colname).decode('utf-8')
- type_start = -1
- key = None
- for pos in range(len(colname)):
- if colname[pos] == '[':
- type_start = pos + 1
- elif colname[pos] == ']' and type_start != -1:
- key = colname[type_start:pos]
- converter = converters[key.upper()]
-
- if converter is None and self.__con._detect_types &
PARSE_DECLTYPES:
- decltype = _lib.sqlite3_column_decltype(self._statement, i)
- if decltype:
- decltype = _ffi.string(decltype).decode('utf-8')
- # if multiple words, use first, eg.
- # "INTEGER NOT NULL" => "INTEGER"
- decltype = decltype.split()[0]
- if '(' in decltype:
- decltype = decltype[:decltype.index('(')]
- converter = converters.get(decltype.upper(), None)
-
- self.__row_cast_map.append(converter)
-
- def _readahead(self, cursor):
- row = []
- num_cols = _lib.sqlite3_data_count(self._statement)
- for i in xrange(num_cols):
- if self.__con._detect_types:
- converter = self.__row_cast_map[i]
- else:
- converter = None
-
- if converter is not None:
- blob = _lib.sqlite3_column_blob(self._statement, i)
- if not blob:
- val = None
- else:
- blob_len = _lib.sqlite3_column_bytes(self._statement, i)
- val = _ffi.buffer(blob, blob_len)[:]
- val = converter(val)
- else:
- typ = _lib.sqlite3_column_type(self._statement, i)
- if typ == _lib.SQLITE_NULL:
- val = None
- elif typ == _lib.SQLITE_INTEGER:
- val = _lib.sqlite3_column_int64(self._statement, i)
- val = int(val)
- elif typ == _lib.SQLITE_FLOAT:
- val = _lib.sqlite3_column_double(self._statement, i)
- elif typ == _lib.SQLITE_TEXT:
- text = _lib.sqlite3_column_text(self._statement, i)
- text_len = _lib.sqlite3_column_bytes(self._statement, i)
- val = _ffi.buffer(text, text_len)[:]
- val = self.__con.text_factory(val)
- elif typ == _lib.SQLITE_BLOB:
- blob = _lib.sqlite3_column_blob(self._statement, i)
- blob_len = _lib.sqlite3_column_bytes(self._statement, i)
- val = _BLOB_TYPE(_ffi.buffer(blob, blob_len))
- row.append(val)
-
- row = tuple(row)
- if self._row_factory is not None:
- row = self._row_factory(cursor, row)
- return row
-
def _get_description(self):
if self._kind == Statement._DML:
return None
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