Gecko [ biogenelab.eu ]

Name	Size	Permission
__init__.py	7.79 KB	-rw-r--r--
__init__.pyc	9.05 KB	-rw-r--r--
attributes.py	54.22 KB	-rw-r--r--
attributes.pyc	52.92 KB	-rw-r--r--
base.py	12.91 KB	-rw-r--r--
base.pyc	13.01 KB	-rw-r--r--
collections.py	52.03 KB	-rw-r--r--
collections.pyc	59.75 KB	-rw-r--r--
dependency.py	44.99 KB	-rw-r--r--
dependency.pyc	27.71 KB	-rw-r--r--
deprecated_interfaces.py	21.43 KB	-rw-r--r--
deprecated_interfaces.pyc	24.62 KB	-rw-r--r--
descriptor_props.py	23.88 KB	-rw-r--r--
descriptor_props.pyc	26.52 KB	-rw-r--r--
dynamic.py	13.03 KB	-rw-r--r--
dynamic.pyc	14.09 KB	-rw-r--r--
evaluator.py	4.91 KB	-rw-r--r--
evaluator.pyc	6.99 KB	-rw-r--r--
events.py	68.96 KB	-rw-r--r--
events.pyc	74.7 KB	-rw-r--r--
exc.py	5.31 KB	-rw-r--r--
exc.pyc	7.46 KB	-rw-r--r--
identity.py	6.92 KB	-rw-r--r--
identity.pyc	10.32 KB	-rw-r--r--
instrumentation.py	16.39 KB	-rw-r--r--
instrumentation.pyc	18.85 KB	-rw-r--r--
interfaces.py	18.54 KB	-rw-r--r--
interfaces.pyc	22.92 KB	-rw-r--r--
loading.py	20.76 KB	-rw-r--r--
loading.pyc	13.17 KB	-rw-r--r--
mapper.py	105.8 KB	-rw-r--r--
mapper.pyc	79.27 KB	-rw-r--r--
path_registry.py	7.49 KB	-rw-r--r--
path_registry.pyc	11.72 KB	-rw-r--r--
persistence.py	39.9 KB	-rw-r--r--
persistence.pyc	30.86 KB	-rw-r--r--
properties.py	9.33 KB	-rw-r--r--
properties.pyc	10.22 KB	-rw-r--r--
query.py	128.55 KB	-rw-r--r--
query.pyc	119.57 KB	-rw-r--r--
relationships.py	108.5 KB	-rw-r--r--
relationships.pyc	93.61 KB	-rw-r--r--
scoping.py	5.96 KB	-rw-r--r--
scoping.pyc	7.22 KB	-rw-r--r--
session.py	93.63 KB	-rw-r--r--
session.pyc	87.9 KB	-rw-r--r--
state.py	20.52 KB	-rw-r--r--
state.pyc	23.98 KB	-rw-r--r--
strategies.py	53.02 KB	-rw-r--r--
strategies.pyc	40.73 KB	-rw-r--r--
strategy_options.py	31.42 KB	-rw-r--r--
strategy_options.pyc	32.5 KB	-rw-r--r--
sync.py	4.63 KB	-rw-r--r--
sync.pyc	3.87 KB	-rw-r--r--
unitofwork.py	22.69 KB	-rw-r--r--
unitofwork.pyc	22.02 KB	-rw-r--r--
util.py	34.86 KB	-rw-r--r--
util.pyc	35.23 KB	-rw-r--r--

Code Editor : identity.py

# orm/identity.py
# Copyright (C) 2005-2014 the SQLAlchemy authors and contributors
# <see AUTHORS file>
#
# This module is part of SQLAlchemy and is released under
# the MIT License: http://www.opensource.org/licenses/mit-license.php

import weakref
from . import attributes
from .. import util

class IdentityMap(dict):

def __init__(self):
        self._modified = set()
        self._wr = weakref.ref(self)

def replace(self, state):
        raise NotImplementedError()

def add(self, state):
        raise NotImplementedError()

def update(self, dict):
        raise NotImplementedError("IdentityMap uses add() to insert data")

def clear(self):
        raise NotImplementedError("IdentityMap uses remove() to remove data")

def _manage_incoming_state(self, state):
        state._instance_dict = self._wr

if state.modified:
            self._modified.add(state)

def _manage_removed_state(self, state):
        del state._instance_dict
        self._modified.discard(state)

def _dirty_states(self):
        return self._modified

def check_modified(self):
        """return True if any InstanceStates present have been marked
        as 'modified'.

"""
        return bool(self._modified)

def has_key(self, key):
        return key in self

def popitem(self):
        raise NotImplementedError("IdentityMap uses remove() to remove data")

def pop(self, key, *args):
        raise NotImplementedError("IdentityMap uses remove() to remove data")

def setdefault(self, key, default=None):
        raise NotImplementedError("IdentityMap uses add() to insert data")

def copy(self):
        raise NotImplementedError()

def __setitem__(self, key, value):
        raise NotImplementedError("IdentityMap uses add() to insert data")

def __delitem__(self, key):
        raise NotImplementedError("IdentityMap uses remove() to remove data")

class WeakInstanceDict(IdentityMap):

def __init__(self):
        IdentityMap.__init__(self)

def __getitem__(self, key):
        state = dict.__getitem__(self, key)
        o = state.obj()
        if o is None:
            raise KeyError(key)
        return o

def __contains__(self, key):
        try:
            if dict.__contains__(self, key):
                state = dict.__getitem__(self, key)
                o = state.obj()
            else:
                return False
        except KeyError:
            return False
        else:
            return o is not None

def contains_state(self, state):
        return dict.get(self, state.key) is state

def replace(self, state):
        if dict.__contains__(self, state.key):
            existing = dict.__getitem__(self, state.key)
            if existing is not state:
                self._manage_removed_state(existing)
            else:
                return

dict.__setitem__(self, state.key, state)
        self._manage_incoming_state(state)

def add(self, state):
        key = state.key
        # inline of self.__contains__
        if dict.__contains__(self, key):
            try:
                existing_state = dict.__getitem__(self, key)
                if existing_state is not state:
                    o = existing_state.obj()
                    if o is not None:
                        raise AssertionError(
                            "A conflicting state is already "
                            "present in the identity map for key %r"
                            % (key, ))
                else:
                    return
            except KeyError:
                pass
        dict.__setitem__(self, key, state)
        self._manage_incoming_state(state)

def get(self, key, default=None):
        state = dict.get(self, key, default)
        if state is default:
            return default
        o = state.obj()
        if o is None:
            return default
        return o

def _items(self):
        values = self.all_states()
        result = []
        for state in values:
            value = state.obj()
            if value is not None:
                result.append((state.key, value))
        return result

def _values(self):
        values = self.all_states()
        result = []
        for state in values:
            value = state.obj()
            if value is not None:
                result.append(value)

return result

if util.py2k:
        items = _items
        values = _values

def iteritems(self):
            return iter(self.items())

def itervalues(self):
            return iter(self.values())
    else:
        def items(self):
            return iter(self._items())

def values(self):
            return iter(self._values())

def all_states(self):
        if util.py2k:
            return dict.values(self)
        else:
            return list(dict.values(self))

def discard(self, state):
        st = dict.get(self, state.key, None)
        if st is state:
            dict.pop(self, state.key, None)
            self._manage_removed_state(state)

def prune(self):
        return 0

class StrongInstanceDict(IdentityMap):

def all_states(self):
        return [attributes.instance_state(o) for o in self.values()]

def contains_state(self, state):
        return (
            state.key in self and
            attributes.instance_state(self[state.key]) is state)

def replace(self, state):
        if dict.__contains__(self, state.key):
            existing = dict.__getitem__(self, state.key)
            existing = attributes.instance_state(existing)
            if existing is not state:
                self._manage_removed_state(existing)
            else:
                return

dict.__setitem__(self, state.key, state.obj())
        self._manage_incoming_state(state)

def add(self, state):
        if state.key in self:
            if attributes.instance_state(
                dict.__getitem__(
                    self,
                    state.key)) is not state:
                raise AssertionError('A conflicting state is already '
                                     'present in the identity map for key %r'
                                     % (state.key, ))
        else:
            dict.__setitem__(self, state.key, state.obj())
            self._manage_incoming_state(state)

def discard(self, state):
        obj = dict.get(self, state.key, None)
        if obj is not None:
            st = attributes.instance_state(obj)
            if st is state:
                dict.pop(self, state.key, None)
                self._manage_removed_state(state)

def prune(self):
        """prune unreferenced, non-dirty states."""

ref_count = len(self)
        dirty = [s.obj() for s in self.all_states() if s.modified]

# work around http://bugs.python.org/issue6149
        keepers = weakref.WeakValueDictionary()
        keepers.update(self)

dict.clear(self)
        dict.update(self, keepers)
        self.modified = bool(dirty)
        return ref_count - len(self)

${this.title}

Code Editor : identity.py