[IMP] fields: add `__slots__` on all fields
Introduce slots on all field classes for common attributes; slots take much less memory than a `__dict__`. The other attributes are stored in a dictionary `_attrs`; all fields with an empty value for `_attrs` (common case) share the same empty dictionary. This saves quite some memory (around 4.5Mb per registry), given the number of field instances created for a registry. Another mechanism is used for the default values of attributes, since slots cannot be assigned on classes.
This commit is contained in:
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915af86a91
commit
e7928e1265
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@ -79,11 +79,14 @@ class MetaField(type):
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MetaField.by_type[cls.type] = cls
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MetaField.by_type[cls.type] = cls
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# compute class attributes to avoid calling dir() on fields
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# compute class attributes to avoid calling dir() on fields
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cls.default_attrs = {}
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cls.column_attrs = []
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cls.column_attrs = []
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cls.related_attrs = []
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cls.related_attrs = []
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cls.description_attrs = []
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cls.description_attrs = []
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for attr in dir(cls):
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for attr in dir(cls):
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if attr.startswith('_column_'):
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if attr.startswith('_default_'):
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cls.default_attrs[attr[9:]] = getattr(cls, attr)
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elif attr.startswith('_column_'):
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cls.column_attrs.append((attr[8:], attr))
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cls.column_attrs.append((attr[8:], attr))
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elif attr.startswith('_related_'):
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elif attr.startswith('_related_'):
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cls.related_attrs.append((attr[9:], attr))
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cls.related_attrs.append((attr[9:], attr))
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@ -254,69 +257,132 @@ class Field(object):
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"""
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"""
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__metaclass__ = MetaField
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__metaclass__ = MetaField
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_attrs = None # dictionary of field attributes; it contains:
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type = None # type of the field (string)
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relational = False # whether the field is a relational one
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__slots__ = [
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'_attrs', # dictionary of field attributes; it contains:
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# - all attributes after __init__()
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# - all attributes after __init__()
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# - free attributes only after set_class_name()
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# - free attributes only after set_class_name()
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automatic = False # whether the field is automatically created ("magic" field)
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'automatic', # whether the field is automatically created ("magic" field)
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inherited = False # whether the field is inherited (_inherits)
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'inherited', # whether the field is inherited (_inherits)
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column = None # the column corresponding to the field
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'column', # the column corresponding to the field
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setup_done = False # whether the field has been set up
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'setup_done', # whether the field has been set up
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name = None # name of the field
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'name', # name of the field
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type = None # type of the field (string)
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'model_name', # name of the model of this field
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relational = False # whether the field is a relational one
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'comodel_name', # name of the model of values (if relational)
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model_name = None # name of the model of this field
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comodel_name = None # name of the model of values (if relational)
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store = True # whether the field is stored in database
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'store', # whether the field is stored in database
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index = False # whether the field is indexed in database
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'index', # whether the field is indexed in database
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manual = False # whether the field is a custom field
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'manual', # whether the field is a custom field
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copy = True # whether the field is copied over by BaseModel.copy()
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'copy', # whether the field is copied over by BaseModel.copy()
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depends = () # collection of field dependencies
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'depends', # collection of field dependencies
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recursive = False # whether self depends on itself
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'recursive', # whether self depends on itself
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compute = None # compute(recs) computes field on recs
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'compute', # compute(recs) computes field on recs
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compute_sudo = False # whether field should be recomputed as admin
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'compute_sudo', # whether field should be recomputed as admin
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inverse = None # inverse(recs) inverses field on recs
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'inverse', # inverse(recs) inverses field on recs
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search = None # search(recs, operator, value) searches on self
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'search', # search(recs, operator, value) searches on self
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related = None # sequence of field names, for related fields
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'related', # sequence of field names, for related fields
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related_sudo = True # whether related fields should be read as admin
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'related_sudo', # whether related fields should be read as admin
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company_dependent = False # whether `self` is company-dependent (property field)
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'company_dependent', # whether `self` is company-dependent (property field)
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default = None # default(recs) returns the default value
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'default', # default(recs) returns the default value
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string = None # field label
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'string', # field label
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help = None # field tooltip
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'help', # field tooltip
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readonly = False
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'readonly', # whether the field is readonly
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required = False
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'required', # whether the field is required
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states = None
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'states', # set readonly and required depending on state
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groups = False # csv list of group xml ids
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'groups', # csv list of group xml ids
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change_default = None # whether the field may trigger a "user-onchange"
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'change_default', # whether the field may trigger a "user-onchange"
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deprecated = None # whether the field is ... deprecated
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'deprecated', # whether the field is deprecated
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inverse_fields = () # collection of inverse fields (objects)
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'inverse_fields', # collection of inverse fields (objects)
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computed_fields = () # fields computed with the same method as self
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'computed_fields', # fields computed with the same method as self
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_triggers = () # invalidation and recomputation triggers
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'related_field', # corresponding related field
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'_triggers', # invalidation and recomputation triggers
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]
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# default values for slots
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_default_automatic = False
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_default_inherited = False
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_default_column = None
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_default_setup_done = False
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_default_name = None
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_default_model_name = None
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_default_comodel_name = None
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_default_store = True
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_default_index = False
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_default_manual = False
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_default_copy = True
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_default_depends = ()
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_default_recursive = False
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_default_compute = None
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_default_compute_sudo = False
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_default_inverse = None
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_default_search = None
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_default_related = None
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_default_related_sudo = True
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_default_company_dependent = False
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_default_default = None
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_default_string = None
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_default_help = None
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_default_readonly = False
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_default_required = False
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_default_states = None
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_default_groups = False
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_default_change_default = None
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_default_deprecated = None
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_default_inverse_fields = ()
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_default_computed_fields = ()
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_default_related_field = None
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_default__triggers = ()
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def __init__(self, string=None, **kwargs):
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def __init__(self, string=None, **kwargs):
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kwargs['string'] = string
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kwargs['string'] = string
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attrs = {key: val for key, val in kwargs.iteritems() if val is not None}
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attrs = {key: val for key, val in kwargs.iteritems() if val is not None}
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self._attrs = attrs or EMPTY_DICT
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self._attrs = attrs or EMPTY_DICT
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def _set_attr(self, name, value):
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def __getattr__(self, name):
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""" Set the given field attribute, and add it to `_attrs` if necessary. """
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""" Access non-slot field attribute. """
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object.__setattr__(self, name, value)
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if name == '_attrs':
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if not hasattr(type(self), name):
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raise AttributeError(name)
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try:
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return self._attrs[name]
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except KeyError:
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raise AttributeError(name)
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def __setattr__(self, name, value):
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""" Set slot or non-slot field attribute. """
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try:
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object.__setattr__(self, name, value)
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except AttributeError:
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if self._attrs:
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if self._attrs:
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self._attrs[name] = value
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self._attrs[name] = value
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else:
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else:
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self._attrs = {name: value} # replace EMPTY_DICT
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self._attrs = {name: value} # replace EMPTY_DICT
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def __delattr__(self, name):
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""" Remove non-slot field attribute. """
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try:
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del self._attrs[name]
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except KeyError:
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raise AttributeError(name)
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def new(self, **kwargs):
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def new(self, **kwargs):
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""" Return a field of the same type as `self`, with its own parameters. """
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""" Return a field of the same type as `self`, with its own parameters. """
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return type(self)(**kwargs)
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return type(self)(**kwargs)
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def set_class_name(self, cls, name):
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def set_class_name(self, cls, name):
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""" Assign the model class and field name of `self`. """
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""" Assign the model class and field name of `self`. """
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for attr, value in self.default_attrs.iteritems():
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setattr(self, attr, value)
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self.model_name = cls._name
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self.model_name = cls._name
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self.name = name
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self.name = name
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@ -346,7 +412,7 @@ class Field(object):
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self._attrs = EMPTY_DICT
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self._attrs = EMPTY_DICT
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for attr, value in attrs.iteritems():
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for attr, value in attrs.iteritems():
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self._set_attr(attr, value)
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setattr(self, attr, value)
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if not self.string and not self.related:
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if not self.string and not self.related:
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# related fields get their string from their parent field
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# related fields get their string from their parent field
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@ -486,7 +552,7 @@ class Field(object):
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for attr, value in field._attrs.iteritems():
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for attr, value in field._attrs.iteritems():
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if attr not in self._attrs:
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if attr not in self._attrs:
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self._set_attr(attr, value)
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setattr(self, attr, value)
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# special case for states: copy it only for inherited fields
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# special case for states: copy it only for inherited fields
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if not self.states and self.inherited:
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if not self.states and self.inherited:
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@ -963,6 +1029,8 @@ class Field(object):
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class Boolean(Field):
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class Boolean(Field):
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type = 'boolean'
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type = 'boolean'
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__slots__ = []
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def convert_to_cache(self, value, record, validate=True):
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def convert_to_cache(self, value, record, validate=True):
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return bool(value)
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return bool(value)
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@ -974,10 +1042,13 @@ class Boolean(Field):
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class Integer(Field):
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class Integer(Field):
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type = 'integer'
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type = 'integer'
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group_operator = None # operator for aggregating values
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__slots__ = [
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'group_operator', # operator for aggregating values
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]
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_default_group_operator = None
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_related_group_operator = property(attrgetter('group_operator'))
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_related_group_operator = property(attrgetter('group_operator'))
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_column_group_operator = property(attrgetter('group_operator'))
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_column_group_operator = property(attrgetter('group_operator'))
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def convert_to_cache(self, value, record, validate=True):
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def convert_to_cache(self, value, record, validate=True):
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@ -1005,8 +1076,14 @@ class Float(Field):
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cursor and returning a pair (total, decimal)
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cursor and returning a pair (total, decimal)
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"""
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"""
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type = 'float'
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type = 'float'
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_digits = None # digits argument passed to class initializer
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group_operator = None # operator for aggregating values
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__slots__ = [
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'_digits', # digits argument passed to class initializer
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'group_operator', # operator for aggregating values
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]
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_default__digits = None
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_default_group_operator = None
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def __init__(self, string=None, digits=None, **kwargs):
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def __init__(self, string=None, digits=None, **kwargs):
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super(Float, self).__init__(string=string, _digits=digits, **kwargs)
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super(Float, self).__init__(string=string, _digits=digits, **kwargs)
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@ -1045,8 +1122,11 @@ class Float(Field):
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class _String(Field):
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class _String(Field):
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""" Abstract class for string fields. """
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""" Abstract class for string fields. """
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translate = False
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__slots__ = [
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'translate', # whether the field is translated
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]
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_default_translate = False
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_column_translate = property(attrgetter('translate'))
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_column_translate = property(attrgetter('translate'))
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_related_translate = property(attrgetter('translate'))
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_related_translate = property(attrgetter('translate'))
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_description_translate = property(attrgetter('translate'))
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_description_translate = property(attrgetter('translate'))
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@ -1060,17 +1140,21 @@ class Char(_String):
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:param bool translate: whether the values of this field can be translated
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:param bool translate: whether the values of this field can be translated
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"""
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"""
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type = 'char'
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type = 'char'
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size = None
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__slots__ = [
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'size', # maximum size of values (deprecated)
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]
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_default_size = None
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_column_size = property(attrgetter('size'))
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_related_size = property(attrgetter('size'))
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_description_size = property(attrgetter('size'))
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def _setup_regular(self, env):
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def _setup_regular(self, env):
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super(Char, self)._setup_regular(env)
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super(Char, self)._setup_regular(env)
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assert isinstance(self.size, (NoneType, int)), \
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assert isinstance(self.size, (NoneType, int)), \
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"Char field %s with non-integer size %r" % (self, self.size)
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"Char field %s with non-integer size %r" % (self, self.size)
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_column_size = property(attrgetter('size'))
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_related_size = property(attrgetter('size'))
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_description_size = property(attrgetter('size'))
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def convert_to_cache(self, value, record, validate=True):
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def convert_to_cache(self, value, record, validate=True):
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if value is None or value is False:
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if value is None or value is False:
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return False
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return False
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@ -1083,6 +1167,7 @@ class Text(_String):
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:param translate: whether the value of this field can be translated
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:param translate: whether the value of this field can be translated
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"""
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"""
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type = 'text'
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type = 'text'
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__slots__ = []
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def convert_to_cache(self, value, record, validate=True):
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def convert_to_cache(self, value, record, validate=True):
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if value is None or value is False:
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if value is None or value is False:
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@ -1091,13 +1176,18 @@ class Text(_String):
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class Html(_String):
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class Html(_String):
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type = 'html'
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type = 'html'
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sanitize = True # whether value must be sanitized
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strip_style = False # whether to strip style attributes
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__slots__ = [
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'sanitize', # whether value must be sanitized
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'strip_style', # whether to strip style attributes
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]
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_default_sanitize = True
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_column_sanitize = property(attrgetter('sanitize'))
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_column_sanitize = property(attrgetter('sanitize'))
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_related_sanitize = property(attrgetter('sanitize'))
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_related_sanitize = property(attrgetter('sanitize'))
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_description_sanitize = property(attrgetter('sanitize'))
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_description_sanitize = property(attrgetter('sanitize'))
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_default_strip_style = False
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_column_strip_style = property(attrgetter('strip_style'))
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_column_strip_style = property(attrgetter('strip_style'))
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_related_strip_style = property(attrgetter('strip_style'))
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_related_strip_style = property(attrgetter('strip_style'))
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_description_strip_style = property(attrgetter('strip_style'))
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_description_strip_style = property(attrgetter('strip_style'))
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@ -1112,6 +1202,7 @@ class Html(_String):
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class Date(Field):
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class Date(Field):
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type = 'date'
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type = 'date'
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__slots__ = []
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@staticmethod
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@staticmethod
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def today(*args):
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def today(*args):
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@ -1172,6 +1263,7 @@ class Date(Field):
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class Datetime(Field):
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class Datetime(Field):
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type = 'datetime'
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type = 'datetime'
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__slots__ = []
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@staticmethod
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@staticmethod
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def now(*args):
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def now(*args):
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@ -1246,6 +1338,7 @@ class Datetime(Field):
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class Binary(Field):
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class Binary(Field):
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type = 'binary'
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type = 'binary'
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__slots__ = []
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class Selection(Field):
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class Selection(Field):
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@ -1261,8 +1354,12 @@ class Selection(Field):
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<field-incremental-definition>`.
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<field-incremental-definition>`.
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"""
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"""
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type = 'selection'
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type = 'selection'
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selection = None # [(value, string), ...], function or method name
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selection_add = None # [(value, string), ...]
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__slots__ = [
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'selection', # [(value, string), ...], function or method name
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]
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_default_selection = None
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def __init__(self, selection=None, string=None, **kwargs):
|
def __init__(self, selection=None, string=None, **kwargs):
|
||||||
if callable(selection):
|
if callable(selection):
|
||||||
|
@ -1353,20 +1450,20 @@ class Selection(Field):
|
||||||
|
|
||||||
class Reference(Selection):
|
class Reference(Selection):
|
||||||
type = 'reference'
|
type = 'reference'
|
||||||
size = None
|
|
||||||
|
|
||||||
def __init__(self, selection=None, string=None, **kwargs):
|
__slots__ = [
|
||||||
super(Reference, self).__init__(selection=selection, string=string, **kwargs)
|
'size', # maximum size of values (deprecated)
|
||||||
|
]
|
||||||
|
|
||||||
|
_default_size = None
|
||||||
|
_related_size = property(attrgetter('size'))
|
||||||
|
_column_size = property(attrgetter('size'))
|
||||||
|
|
||||||
def _setup_regular(self, env):
|
def _setup_regular(self, env):
|
||||||
super(Reference, self)._setup_regular(env)
|
super(Reference, self)._setup_regular(env)
|
||||||
assert isinstance(self.size, (NoneType, int)), \
|
assert isinstance(self.size, (NoneType, int)), \
|
||||||
"Reference field %s with non-integer size %r" % (self, self.size)
|
"Reference field %s with non-integer size %r" % (self, self.size)
|
||||||
|
|
||||||
_related_size = property(attrgetter('size'))
|
|
||||||
|
|
||||||
_column_size = property(attrgetter('size'))
|
|
||||||
|
|
||||||
def convert_to_cache(self, value, record, validate=True):
|
def convert_to_cache(self, value, record, validate=True):
|
||||||
if isinstance(value, BaseModel):
|
if isinstance(value, BaseModel):
|
||||||
if ((not validate or value._name in self.get_values(record.env))
|
if ((not validate or value._name in self.get_values(record.env))
|
||||||
|
@ -1392,8 +1489,14 @@ class Reference(Selection):
|
||||||
class _Relational(Field):
|
class _Relational(Field):
|
||||||
""" Abstract class for relational fields. """
|
""" Abstract class for relational fields. """
|
||||||
relational = True
|
relational = True
|
||||||
domain = None # domain for searching values
|
|
||||||
context = None # context for searching values
|
__slots__ = [
|
||||||
|
'domain', # domain for searching values
|
||||||
|
'context', # context for searching values
|
||||||
|
]
|
||||||
|
|
||||||
|
_default_domain = []
|
||||||
|
_default_context = {}
|
||||||
|
|
||||||
def _setup_regular(self, env):
|
def _setup_regular(self, env):
|
||||||
super(_Relational, self)._setup_regular(env)
|
super(_Relational, self)._setup_regular(env)
|
||||||
|
@ -1461,9 +1564,16 @@ class Many2one(_Relational):
|
||||||
fields or field extensions.
|
fields or field extensions.
|
||||||
"""
|
"""
|
||||||
type = 'many2one'
|
type = 'many2one'
|
||||||
ondelete = 'set null' # what to do when value is deleted
|
|
||||||
auto_join = False # whether joins are generated upon search
|
__slots__ = [
|
||||||
delegate = False # whether self implements delegation
|
'ondelete', # what to do when value is deleted
|
||||||
|
'auto_join', # whether joins are generated upon search
|
||||||
|
'delegate', # whether self implements delegation
|
||||||
|
]
|
||||||
|
|
||||||
|
_default_ondelete = 'set null'
|
||||||
|
_default_auto_join = False
|
||||||
|
_default_delegate = False
|
||||||
|
|
||||||
def __init__(self, comodel_name=None, string=None, **kwargs):
|
def __init__(self, comodel_name=None, string=None, **kwargs):
|
||||||
super(Many2one, self).__init__(comodel_name=comodel_name, string=string, **kwargs)
|
super(Many2one, self).__init__(comodel_name=comodel_name, string=string, **kwargs)
|
||||||
|
@ -1543,6 +1653,7 @@ class UnionUpdate(SpecialValue):
|
||||||
|
|
||||||
class _RelationalMulti(_Relational):
|
class _RelationalMulti(_Relational):
|
||||||
""" Abstract class for relational fields *2many. """
|
""" Abstract class for relational fields *2many. """
|
||||||
|
__slots__ = []
|
||||||
|
|
||||||
def _update(self, records, value):
|
def _update(self, records, value):
|
||||||
""" Update the cached value of `self` for `records` with `value`. """
|
""" Update the cached value of `self` for `records` with `value`. """
|
||||||
|
@ -1666,10 +1777,17 @@ class One2many(_RelationalMulti):
|
||||||
the case of related fields or field extensions.
|
the case of related fields or field extensions.
|
||||||
"""
|
"""
|
||||||
type = 'one2many'
|
type = 'one2many'
|
||||||
inverse_name = None # name of the inverse field
|
|
||||||
auto_join = False # whether joins are generated upon search
|
__slots__ = [
|
||||||
limit = None # optional limit to use upon read
|
'inverse_name', # name of the inverse field
|
||||||
copy = False # o2m are not copied by default
|
'auto_join', # whether joins are generated upon search
|
||||||
|
'limit', # optional limit to use upon read
|
||||||
|
]
|
||||||
|
|
||||||
|
_default_inverse_name = None
|
||||||
|
_default_auto_join = False
|
||||||
|
_default_limit = None
|
||||||
|
_default_copy = False # o2m are not copied by default
|
||||||
|
|
||||||
def __init__(self, comodel_name=None, inverse_name=None, string=None, **kwargs):
|
def __init__(self, comodel_name=None, inverse_name=None, string=None, **kwargs):
|
||||||
super(One2many, self).__init__(
|
super(One2many, self).__init__(
|
||||||
|
@ -1731,10 +1849,18 @@ class Many2many(_RelationalMulti):
|
||||||
|
|
||||||
"""
|
"""
|
||||||
type = 'many2many'
|
type = 'many2many'
|
||||||
relation = None # name of table
|
|
||||||
column1 = None # column of table referring to model
|
__slots__ = [
|
||||||
column2 = None # column of table referring to comodel
|
'relation', # name of table
|
||||||
limit = None # optional limit to use upon read
|
'column1', # column of table referring to model
|
||||||
|
'column2', # column of table referring to comodel
|
||||||
|
'limit', # optional limit to use upon read
|
||||||
|
]
|
||||||
|
|
||||||
|
_default_relation = None
|
||||||
|
_default_column1 = None
|
||||||
|
_default_column2 = None
|
||||||
|
_default_limit = None
|
||||||
|
|
||||||
def __init__(self, comodel_name=None, relation=None, column1=None, column2=None,
|
def __init__(self, comodel_name=None, relation=None, column1=None, column2=None,
|
||||||
string=None, **kwargs):
|
string=None, **kwargs):
|
||||||
|
@ -1777,6 +1903,7 @@ class Many2many(_RelationalMulti):
|
||||||
class Serialized(Field):
|
class Serialized(Field):
|
||||||
""" Minimal support for existing sparse and serialized fields. """
|
""" Minimal support for existing sparse and serialized fields. """
|
||||||
type = 'serialized'
|
type = 'serialized'
|
||||||
|
__slots__ = []
|
||||||
|
|
||||||
def convert_to_cache(self, value, record, validate=True):
|
def convert_to_cache(self, value, record, validate=True):
|
||||||
return value or {}
|
return value or {}
|
||||||
|
@ -1785,11 +1912,11 @@ class Serialized(Field):
|
||||||
class Id(Field):
|
class Id(Field):
|
||||||
""" Special case for field 'id'. """
|
""" Special case for field 'id'. """
|
||||||
type = 'integer'
|
type = 'integer'
|
||||||
|
__slots__ = []
|
||||||
|
|
||||||
string = 'ID'
|
_default_string = 'ID'
|
||||||
store = True
|
_default_store = True
|
||||||
#: Can't write this!
|
_default_readonly = True
|
||||||
readonly = True
|
|
||||||
|
|
||||||
def to_column(self):
|
def to_column(self):
|
||||||
self.column = fields.integer(self.string)
|
self.column = fields.integer(self.string)
|
||||||
|
|
Loading…
Reference in New Issue