def _class_for_table(session,
engine,
selectable,
base_cls=object,
**mapper_kwargs):
selectable = expression._clause_element_as_expr(selectable)
mapname = 'Mapped' + _selectable_name(selectable)
# Py2K
if isinstance(mapname, unicode):
engine_encoding = engine.dialect.encoding
mapname = mapname.encode(engine_encoding)
# end Py2K
if isinstance(selectable, Table):
klass = TableClassType(mapname, (base_cls, ), {})
else:
klass = SelectableClassType(mapname, (base_cls, ), {})
def _compare(self, o):
L = list(self.__class__.c.keys())
L.sort()
t1 = [getattr(self, k) for k in L]
try:
t2 = [getattr(o, k) for k in L]
except AttributeError:
raise TypeError('unable to compare with %s' % o.__class__)
return t1, t2
# python2/python3 compatible system of
# __cmp__ - __lt__ + __eq__
def __lt__(self, o):
t1, t2 = _compare(self, o)
return t1 < t2
def __eq__(self, o):
t1, t2 = _compare(self, o)
return t1 == t2
def __repr__(self):
L = [
"%s=%r" % (key, getattr(self, key, ''))
for key in self.__class__.c.keys()
]
return '%s(%s)' % (self.__class__.__name__, ','.join(L))
for m in ['__eq__', '__repr__', '__lt__']:
setattr(klass, m, eval(m))
klass._table = selectable
klass.c = expression.ColumnCollection()
mappr = mapper(klass,
selectable,
extension=AutoAdd(session),
**mapper_kwargs)
for k in mappr.iterate_properties:
klass.c[k.key] = k.columns[0]
klass._query = session.query_property()
return klass
def _class_for_table(session, engine, selectable, base_cls, mapper_kwargs):
selectable = expression._clause_element_as_expr(selectable)
mapname = _selectable_name(selectable)
# Py2K
if isinstance(mapname, unicode):
engine_encoding = engine.dialect.encoding
mapname = mapname.encode(engine_encoding)
# end Py2K
if isinstance(selectable, Table):
klass = TableClassType(mapname, (base_cls,), {})
else:
klass = SelectableClassType(mapname, (base_cls,), {})
def _compare(self, o):
L = list(self.__class__.c.keys())
L.sort()
t1 = [getattr(self, k) for k in L]
try:
t2 = [getattr(o, k) for k in L]
except AttributeError:
raise TypeError('unable to compare with %s' % o.__class__)
return t1, t2
# python2/python3 compatible system of
# __cmp__ - __lt__ + __eq__
def __lt__(self, o):
t1, t2 = _compare(self, o)
return t1 < t2
def __eq__(self, o):
t1, t2 = _compare(self, o)
return t1 == t2
def __repr__(self):
L = ["%s=%r" % (key, getattr(self, key, ''))
for key in self.__class__.c.keys()]
return '%s(%s)' % (self.__class__.__name__, ','.join(L))
def __getitem__(self, key):
return self._query[key]
for m in ['__eq__', '__repr__', '__lt__', '__getitem__']:
setattr(klass, m, eval(m))
klass._table = selectable
klass.c = expression.ColumnCollection()
mappr = mapper(klass,
selectable,
extension=AutoAdd(session),
**mapper_kwargs)
for k in mappr.iterate_properties:
klass.c[k.key] = k.columns[0]
klass._query = session.query_property()
return klass
def parse(f,q):
ce = expression._clause_element_as_expr(q)
try:
columns = ce._raw_columns
except:
columns = ce.columns._data.values()
fe = []
tokens = whereExpression.parseString(f)
for t in tokens:
pass
print tokens
def class_for_table(selectable, **mapper_kwargs):
selectable = expression._clause_element_as_expr(selectable)
mapname = 'Mapped' + _selectable_name(selectable)
# Py2K
if isinstance(mapname, unicode):
engine_encoding = selectable.metadata.bind.dialect.encoding
mapname = mapname.encode(engine_encoding)
# end Py2K
if isinstance(selectable, Table):
klass = TableClassType(mapname, (object,), {})
else:
klass = SelectableClassType(mapname, (object,), {})
def __cmp__(self, o):
L = self.__class__.c.keys()
L.sort()
t1 = [getattr(self, k) for k in L]
try:
t2 = [getattr(o, k) for k in L]
except AttributeError:
raise TypeError('unable to compare with %s' % o.__class__)
return cmp(t1, t2)
def __repr__(self):
L = ["%s=%r" % (key, getattr(self, key, ''))
for key in self.__class__.c.keys()]
return '%s(%s)' % (self.__class__.__name__, ','.join(L))
for m in ['__cmp__', '__repr__']:
setattr(klass, m, eval(m))
klass._table = selectable
klass.c = expression.ColumnCollection()
mappr = mapper(klass,
selectable,
extension=Session.extension,
allow_null_pks=_is_outer_join(selectable),
**mapper_kwargs)
for k in mappr.iterate_properties:
klass.c[k.key] = k.columns[0]
klass._query = Session.query_property()
return klass
def class_for_table(selectable, **mapper_kwargs):
selectable = expression._clause_element_as_expr(selectable)
mapname = 'Mapped' + _selectable_name(selectable)
if isinstance(mapname, unicode):
engine_encoding = selectable.metadata.bind.dialect.encoding
mapname = mapname.encode(engine_encoding)
if isinstance(selectable, Table):
klass = TableClassType(mapname, (object, ), {})
else:
klass = SelectableClassType(mapname, (object, ), {})
def __cmp__(self, o):
L = self.__class__.c.keys()
L.sort()
t1 = [getattr(self, k) for k in L]
try:
t2 = [getattr(o, k) for k in L]
except AttributeError:
raise TypeError('unable to compare with %s' % o.__class__)
return cmp(t1, t2)
def __repr__(self):
L = [
"%s=%r" % (key, getattr(self, key, ''))
for key in self.__class__.c.keys()
]
return '%s(%s)' % (self.__class__.__name__, ','.join(L))
for m in ['__cmp__', '__repr__']:
setattr(klass, m, eval(m))
klass._table = selectable
klass.c = expression.ColumnCollection()
mappr = mapper(klass,
selectable,
extension=Session.extension,
allow_null_pks=_is_outer_join(selectable),
**mapper_kwargs)
for k in mappr.iterate_properties:
klass.c[k.key] = k.columns[0]
klass._query = Session.query_property()
return klass
def with_labels(self, selectable, base=None, **mapper_args):
"""Map a selectable directly, wrapping the
selectable in a subquery with labels.
The class and its mapping are not cached and will
be discarded once dereferenced (as of 0.6.6).
:param selectable: an :func:`.expression.select` construct.
:param base: a Python class which will be used as the
base for the mapped class. If ``None``, the "base"
argument specified by this :class:`.SQLSoup`
instance's constructor will be used, which defaults to
``object``.
:param mapper_args: Dictionary of arguments which will
be passed directly to :func:`.orm.mapper`.
"""
# TODO give meaningful aliases
return self.map(expression._clause_element_as_expr(selectable).select(
use_labels=True).alias('foo'),
base=base,
**mapper_args)
def with_labels(self, selectable, base=None, **mapper_args):
"""Map a selectable directly, wrapping the
selectable in a subquery with labels.
The class and its mapping are not cached and will
be discarded once dereferenced (as of 0.6.6).
:param selectable: an :func:`.expression.select` construct.
:param base: a Python class which will be used as the
base for the mapped class. If ``None``, the "base"
argument specified by this :class:`.SqlSoup`
instance's constructor will be used, which defaults to
``object``.
:param mapper_args: Dictionary of arguments which will
be passed directly to :func:`.orm.mapper`.
"""
# TODO give meaningful aliases
return self.map(
expression._clause_element_as_expr(selectable).
select(use_labels=True).
alias('foo'), base=base, **mapper_args)
def with_labels(self, item):
# TODO give meaningful aliases
return self.map(
expression._clause_element_as_expr(item).select(
use_labels=True).alias('foo'))
def __init__(self, element):
self.element = _clause_element_as_expr(element)
def with_labels(self, item):
# TODO give meaningful aliases
return self.map(expression._clause_element_as_expr(item).select(use_labels=True).alias('foo'))
def __init__(self, *elements):
self.elements = [_clause_element_as_expr(e) for e in elements]
