Python sqlalchemy.orm.collections.collection.remover() Examples
The following are 30
code examples of sqlalchemy.orm.collections.collection.remover().
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sqlalchemy.orm.collections.collection
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Example #1
| Source File: test_collection.py From sqlalchemy with MIT License | 6 votes |
|
def test_dict_subclass(self):
class MyDict(dict):
@collection.appender
@collection.internally_instrumented
def set(self, item, _sa_initiator=None):
self.__setitem__(item.a, item, _sa_initiator=_sa_initiator)
@collection.remover
@collection.internally_instrumented
def _remove(self, item, _sa_initiator=None):
self.__delitem__(item.a, _sa_initiator=_sa_initiator)
self._test_adapter(
MyDict, self.dictable_entity, to_set=lambda c: set(c.values())
)
self._test_dict(MyDict)
self._test_dict_bulk(MyDict)
self.assert_(getattr(MyDict, "_sa_instrumented") == id(MyDict))
Example #2
| Source File: collections.py From jarvis with GNU General Public License v2.0 | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #3
| Source File: collections.py From pyRevit with GNU General Public License v3.0 | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #4
| Source File: collections.py From pyRevit with GNU General Public License v3.0 | 6 votes |
|
def _assert_required_roles(cls, roles, methods):
"""ensure all roles are present, and apply implicit instrumentation if
needed
"""
if 'appender' not in roles or not hasattr(cls, roles['appender']):
raise sa_exc.ArgumentError(
"Type %s must elect an appender method to be "
"a collection class" % cls.__name__)
elif (roles['appender'] not in methods and
not hasattr(getattr(cls, roles['appender']), '_sa_instrumented')):
methods[roles['appender']] = ('fire_append_event', 1, None)
if 'remover' not in roles or not hasattr(cls, roles['remover']):
raise sa_exc.ArgumentError(
"Type %s must elect a remover method to be "
"a collection class" % cls.__name__)
elif (roles['remover'] not in methods and
not hasattr(getattr(cls, roles['remover']), '_sa_instrumented')):
methods[roles['remover']] = ('fire_remove_event', 1, None)
if 'iterator' not in roles or not hasattr(cls, roles['iterator']):
raise sa_exc.ArgumentError(
"Type %s must elect an iterator method to be "
"a collection class" % cls.__name__)
Example #5
| Source File: collections.py From moviegrabber with GNU General Public License v3.0 | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #6
| Source File: collections.py From planespotter with MIT License | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #7
| Source File: collections.py From stdm with GNU General Public License v2.0 | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #8
| Source File: collections.py From android_universal with MIT License | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #9
| Source File: collections.py From Fluid-Designer with GNU General Public License v3.0 | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #10
| Source File: collections.py From sqlalchemy with MIT License | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = "remover"
return fn
Example #11
| Source File: collections.py From jbox with MIT License | 6 votes |
|
def remover(fn):
"""Tag the method as the collection remover.
The remover method is called with one positional argument: the value
to remove. The method will be automatically decorated with
:meth:`removes_return` if not already decorated::
@collection.remover
def zap(self, entity): ...
# or, equivalently
@collection.remover
@collection.removes_return()
def zap(self, ): ...
If the value to remove is not present in the collection, you may
raise an exception or return None to ignore the error.
If the remove method is internally instrumented, you must also
receive the keyword argument '_sa_initiator' and ensure its
promulgation to collection events.
"""
fn._sa_instrument_role = 'remover'
return fn
Example #12
| Source File: collections.py From sqlalchemy with MIT License | 5 votes |
|
def _locate_roles_and_methods(cls):
"""search for _sa_instrument_role-decorated methods in
method resolution order, assign to roles.
"""
roles = {}
methods = {}
for supercls in cls.__mro__:
for name, method in vars(supercls).items():
if not callable(method):
continue
# note role declarations
if hasattr(method, "_sa_instrument_role"):
role = method._sa_instrument_role
assert role in (
"appender",
"remover",
"iterator",
"converter",
)
roles.setdefault(role, name)
# transfer instrumentation requests from decorated function
# to the combined queue
before, after = None, None
if hasattr(method, "_sa_instrument_before"):
op, argument = method._sa_instrument_before
assert op in ("fire_append_event", "fire_remove_event")
before = op, argument
if hasattr(method, "_sa_instrument_after"):
op = method._sa_instrument_after
assert op in ("fire_append_event", "fire_remove_event")
after = op
if before:
methods[name] = before + (after,)
elif after:
methods[name] = None, None, after
return roles, methods
Example #13
| Source File: collections.py From sqlalchemy with MIT License | 5 votes |
|
def clear_with_event(self, initiator=None):
"""Empty the collection, firing a mutation event for each entity."""
if self.empty:
self._refuse_empty()
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=initiator)
Example #14
| Source File: collections.py From sqlalchemy with MIT License | 5 votes |
|
def clear_without_event(self):
"""Empty the collection, firing no events."""
if self.empty:
self._refuse_empty()
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=False)
Example #15
| Source File: test_collection.py From sqlalchemy with MIT License | 5 votes |
|
def test_object_duck(self):
class MyCollection(object):
def __init__(self):
self.data = set()
@collection.appender
def push(self, item):
self.data.add(item)
@collection.remover
def zark(self, item):
self.data.remove(item)
@collection.removes_return()
def maybe_zark(self, item):
if item in self.data:
self.data.remove(item)
return item
@collection.iterator
def __iter__(self):
return iter(self.data)
__hash__ = object.__hash__
def __eq__(self, other):
return self.data == other
self._test_adapter(MyCollection)
self._test_object(MyCollection)
self.assert_(
getattr(MyCollection, "_sa_instrumented") == id(MyCollection)
)
Example #16
| Source File: test_collection.py From sqlalchemy with MIT License | 5 votes |
|
def test_object_emulates(self):
class MyCollection2(object):
__emulates__ = None
def __init__(self):
self.data = set()
# looks like a list
def append(self, item):
assert False
@collection.appender
def push(self, item):
self.data.add(item)
@collection.remover
def zark(self, item):
self.data.remove(item)
@collection.removes_return()
def maybe_zark(self, item):
if item in self.data:
self.data.remove(item)
return item
@collection.iterator
def __iter__(self):
return iter(self.data)
__hash__ = object.__hash__
def __eq__(self, other):
return self.data == other
self._test_adapter(MyCollection2)
self._test_object(MyCollection2)
self.assert_(
getattr(MyCollection2, "_sa_instrumented") == id(MyCollection2)
)
Example #17
| Source File: collections.py From android_universal with MIT License | 5 votes |
|
def _locate_roles_and_methods(cls):
"""search for _sa_instrument_role-decorated methods in
method resolution order, assign to roles.
"""
roles = {}
methods = {}
for supercls in cls.__mro__:
for name, method in vars(supercls).items():
if not util.callable(method):
continue
# note role declarations
if hasattr(method, '_sa_instrument_role'):
role = method._sa_instrument_role
assert role in ('appender', 'remover', 'iterator',
'linker', 'converter')
roles.setdefault(role, name)
# transfer instrumentation requests from decorated function
# to the combined queue
before, after = None, None
if hasattr(method, '_sa_instrument_before'):
op, argument = method._sa_instrument_before
assert op in ('fire_append_event', 'fire_remove_event')
before = op, argument
if hasattr(method, '_sa_instrument_after'):
op = method._sa_instrument_after
assert op in ('fire_append_event', 'fire_remove_event')
after = op
if before:
methods[name] = before + (after, )
elif after:
methods[name] = None, None, after
return roles, methods
Example #18
| Source File: collections.py From jarvis with GNU General Public License v2.0 | 5 votes |
|
def iterator(fn):
"""Tag the method as the collection remover.
The iterator method is called with no arguments. It is expected to
return an iterator over all collection members::
@collection.iterator
def __iter__(self): ...
"""
fn._sa_instrument_role = 'iterator'
return fn
Example #19
| Source File: collections.py From jarvis with GNU General Public License v2.0 | 5 votes |
|
def clear_with_event(self, initiator=None):
"""Empty the collection, firing a mutation event for each entity."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=initiator)
Example #20
| Source File: collections.py From jarvis with GNU General Public License v2.0 | 5 votes |
|
def clear_without_event(self):
"""Empty the collection, firing no events."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=False)
Example #21
| Source File: collections.py From jarvis with GNU General Public License v2.0 | 5 votes |
|
def _locate_roles_and_methods(cls):
"""search for _sa_instrument_role-decorated methods in
method resolution order, assign to roles.
"""
roles = {}
methods = {}
for supercls in cls.__mro__:
for name, method in vars(supercls).items():
if not util.callable(method):
continue
# note role declarations
if hasattr(method, '_sa_instrument_role'):
role = method._sa_instrument_role
assert role in ('appender', 'remover', 'iterator',
'linker', 'converter')
roles.setdefault(role, name)
# transfer instrumentation requests from decorated function
# to the combined queue
before, after = None, None
if hasattr(method, '_sa_instrument_before'):
op, argument = method._sa_instrument_before
assert op in ('fire_append_event', 'fire_remove_event')
before = op, argument
if hasattr(method, '_sa_instrument_after'):
op = method._sa_instrument_after
assert op in ('fire_append_event', 'fire_remove_event')
after = op
if before:
methods[name] = before + (after, )
elif after:
methods[name] = None, None, after
return roles, methods
Example #22
| Source File: collections.py From moviegrabber with GNU General Public License v3.0 | 5 votes |
|
def iterator(fn):
"""Tag the method as the collection remover.
The iterator method is called with no arguments. It is expected to
return an iterator over all collection members::
@collection.iterator
def __iter__(self): ...
"""
fn._sa_instrument_role = 'iterator'
return fn
Example #23
| Source File: collections.py From moviegrabber with GNU General Public License v3.0 | 5 votes |
|
def clear_with_event(self, initiator=None):
"""Empty the collection, firing a mutation event for each entity."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=initiator)
Example #24
| Source File: collections.py From moviegrabber with GNU General Public License v3.0 | 5 votes |
|
def clear_without_event(self):
"""Empty the collection, firing no events."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=False)
Example #25
| Source File: collections.py From android_universal with MIT License | 5 votes |
|
def iterator(fn):
"""Tag the method as the collection remover.
The iterator method is called with no arguments. It is expected to
return an iterator over all collection members::
@collection.iterator
def __iter__(self): ...
"""
fn._sa_instrument_role = 'iterator'
return fn
Example #26
| Source File: collections.py From android_universal with MIT License | 5 votes |
|
def clear_with_event(self, initiator=None):
"""Empty the collection, firing a mutation event for each entity."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=initiator)
Example #27
| Source File: collections.py From android_universal with MIT License | 5 votes |
|
def clear_without_event(self):
"""Empty the collection, firing no events."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=False)
Example #28
| Source File: collections.py From planespotter with MIT License | 5 votes |
|
def _locate_roles_and_methods(cls):
"""search for _sa_instrument_role-decorated methods in
method resolution order, assign to roles.
"""
roles = {}
methods = {}
for supercls in cls.__mro__:
for name, method in vars(supercls).items():
if not util.callable(method):
continue
# note role declarations
if hasattr(method, '_sa_instrument_role'):
role = method._sa_instrument_role
assert role in ('appender', 'remover', 'iterator',
'linker', 'converter')
roles.setdefault(role, name)
# transfer instrumentation requests from decorated function
# to the combined queue
before, after = None, None
if hasattr(method, '_sa_instrument_before'):
op, argument = method._sa_instrument_before
assert op in ('fire_append_event', 'fire_remove_event')
before = op, argument
if hasattr(method, '_sa_instrument_after'):
op = method._sa_instrument_after
assert op in ('fire_append_event', 'fire_remove_event')
after = op
if before:
methods[name] = before + (after, )
elif after:
methods[name] = None, None, after
return roles, methods
Example #29
| Source File: collections.py From jbox with MIT License | 5 votes |
|
def iterator(fn):
"""Tag the method as the collection remover.
The iterator method is called with no arguments. It is expected to
return an iterator over all collection members::
@collection.iterator
def __iter__(self): ...
"""
fn._sa_instrument_role = 'iterator'
return fn
Example #30
| Source File: collections.py From jbox with MIT License | 5 votes |
|
def clear_with_event(self, initiator=None):
"""Empty the collection, firing a mutation event for each entity."""
remover = self._data()._sa_remover
for item in list(self):
remover(item, _sa_initiator=initiator)
