/usr/lib/python2.7/dist-packages/trytond/model/fields/field.py is in tryton-server 3.4.0-3+deb8u3.
This file is owned by root:root, with mode 0o644.
The actual contents of the file can be viewed below.
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#this repository contains the full copyright notices and license terms.
from collections import namedtuple
import warnings
from functools import wraps
from sql import operators, Column, Literal, Select, CombiningQuery
from sql.conditionals import Coalesce, NullIf
from sql.operators import Concat
from trytond.pyson import PYSON
from trytond.const import OPERATORS
from trytond.transaction import Transaction
from trytond.pool import Pool
def domain_validate(value):
assert isinstance(value, list), 'domain must be a list'
def test_domain(dom):
for arg in dom:
if isinstance(arg, basestring):
if arg not in ('AND', 'OR'):
return False
elif (isinstance(arg, tuple)
or (isinstance(arg, list)
and len(arg) > 2
and ((arg[1] in OPERATORS)
or (isinstance(arg[1], PYSON)
and arg[1].types() == set([str]))))):
pass
elif isinstance(arg, list):
if not test_domain(arg):
return False
return True
assert test_domain(value), 'invalid domain'
def states_validate(value):
assert isinstance(value, dict), 'states must be a dict'
for state in value:
if state == 'icon':
continue
assert isinstance(value[state], (bool, PYSON)), \
'values of states must be PYSON'
if hasattr(value[state], 'types'):
assert value[state].types() == set([bool]), \
'values of states must return boolean'
def depends_validate(value):
assert isinstance(value, list), 'depends must be a list'
def context_validate(value):
assert isinstance(value, dict), 'context must be a dict'
def size_validate(value):
if value is not None:
assert isinstance(value, (int, PYSON)), 'size must be PYSON'
if hasattr(value, 'types'):
assert value.types() == set([int]), \
'size must return integer'
def depends(*fields, **kwargs):
methods = kwargs.pop('methods', None)
assert not kwargs
def decorator(func):
depends = getattr(func, 'depends', set())
depends |= set(fields)
setattr(func, 'depends', depends)
if methods:
depend_methods = getattr(func, 'depend_methods', set())
depend_methods |= set(methods)
setattr(func, 'depend_methods', depend_methods)
@wraps(func)
def wrapper(self, *args, **kwargs):
for field in fields:
field = field.split('.')[0]
if field.startswith('_parent_'):
field = field[8:] # Strip '_parent_'
if not hasattr(self, field):
setattr(self, field, None)
return func(self, *args, **kwargs)
return wrapper
return decorator
SQL_OPERATORS = {
'=': operators.Equal,
'!=': operators.NotEqual,
'like': operators.Like,
'not like': operators.NotLike,
'ilike': operators.ILike,
'not ilike': operators.NotILike,
'in': operators.In,
'not in': operators.NotIn,
'<=': operators.LessEqual,
'>=': operators.GreaterEqual,
'<': operators.Less,
'>': operators.Greater,
}
class Field(object):
_type = None
def __init__(self, string='', help='', required=False, readonly=False,
domain=None, states=None, select=False, on_change=None,
on_change_with=None, depends=None, context=None,
loading='eager'):
'''
:param string: A string for label of the field.
:param help: A multi-line help string.
:param required: A boolean if ``True`` the field is required.
:param readonly: A boolean if ``True`` the field is not editable in
the user interface.
:param domain: A list that defines a domain constraint.
:param states: A dictionary. Possible keys are ``required``,
``readonly`` and ``invisible``. Values are pyson expressions that
will be evaluated with record values. This allows to change
dynamically the attributes of the field.
:param select: An boolean. When True search will be optimized.
:param on_change: A list of values. If set, the client will call the
method ``on_change_<field_name>`` when the user changes the field
value. It then passes this list of values as arguments to the
function.
:param on_change_with: A list of values. Like ``on_change``, but
defined the other way around. The list contains all the fields that
must update the current field.
:param depends: A list of field name on which this one depends.
:param context: A dictionary which will be given to open the relation
fields.
:param loading: Define how the field must be loaded:
``lazy`` or ``eager``.
'''
assert string, 'a string is required'
self.string = string
self.help = help
self.required = required
self.readonly = readonly
self.__domain = None
self.domain = domain or []
self.__states = None
self.states = states or {}
self.select = bool(select)
self.on_change = set()
if on_change:
warnings.warn('on_change argument is deprecated, '
'use the depends decorator',
DeprecationWarning, stacklevel=3)
self.on_change |= set(on_change)
self.on_change_with = set()
if on_change_with:
warnings.warn('on_change_with argument is deprecated, '
'use the depends decorator',
DeprecationWarning, stacklevel=3)
self.on_change_with |= set(on_change_with)
self.__depends = None
self.depends = depends or []
self.__context = None
self.context = context or {}
assert loading in ('lazy', 'eager'), \
'loading must be "lazy" or "eager"'
self.loading = loading
self.name = None
def _get_domain(self):
return self.__domain
def _set_domain(self, value):
domain_validate(value)
self.__domain = value
domain = property(_get_domain, _set_domain)
def _get_states(self):
return self.__states
def _set_states(self, value):
states_validate(value)
self.__states = value
states = property(_get_states, _set_states)
def _get_depends(self):
return self.__depends
def _set_depends(self, value):
depends_validate(value)
self.__depends = value
depends = property(_get_depends, _set_depends)
def _get_context(self):
return self.__context
def _set_context(self, value):
context_validate(value)
self.__context = value
context = property(_get_context, _set_context)
def __get__(self, inst, cls):
if inst is None:
return self
assert self.name is not None
return inst.__getattr__(self.name)
def __set__(self, inst, value):
assert self.name is not None
if inst._values is None:
inst._values = {}
inst._values[self.name] = value
@staticmethod
def sql_format(value):
return value
def sql_type(self):
raise NotImplementedError
def sql_column(self, table):
return Column(table, self.name)
def _domain_value(self, operator, value):
if isinstance(value, (Select, CombiningQuery)):
return value
if operator in ('in', 'not in'):
return [self.sql_format(v) for v in value if v is not None]
else:
return self.sql_format(value)
def _domain_add_null(self, column, operator, value, expression):
if operator in ('in', 'not in'):
if (not isinstance(value, (Select, CombiningQuery))
and any(v is None for v in value)):
if operator == 'in':
expression |= (column == None)
else:
expression &= (column != None)
return expression
def convert_domain(self, domain, tables, Model):
"Return a SQL expression for the domain using tables"
table, _ = tables[None]
name, operator, value = domain
assert name == self.name
method = getattr(Model, 'domain_%s' % name, None)
if method:
return method(domain, tables)
Operator = SQL_OPERATORS[operator]
column = self.sql_column(table)
expression = Operator(column, self._domain_value(operator, value))
if isinstance(expression, operators.In) and not expression.right:
expression = Literal(False)
elif isinstance(expression, operators.NotIn) and not expression.right:
expression = Literal(True)
expression = self._domain_add_null(column, operator, value, expression)
return expression
def convert_order(self, name, tables, Model):
"Return a SQL expression to order"
assert name == self.name
table, _ = tables[None]
method = getattr(Model, 'order_%s' % name, None)
if method:
return method(tables)
else:
return [self.sql_column(table)]
class FieldTranslate(Field):
def _get_translation_join(self, Model, name,
translation, model, table):
language = Transaction().language
if Model.__name__ == 'ir.model':
return table.join(translation, 'LEFT',
condition=(translation.name == Concat(Concat(
table.model, ','), name))
& (translation.res_id == -1)
& (translation.lang == language)
& (translation.type == 'model')
& (translation.fuzzy == False))
elif Model.__name__ == 'ir.model.field':
if name == 'field_description':
type_ = 'field'
else:
type_ = 'help'
return table.join(model, 'LEFT',
condition=model.id == table.model).join(
translation, 'LEFT',
condition=(translation.name == Concat(Concat(
model.model, ','), table.name))
& (translation.res_id == -1)
& (translation.lang == language)
& (translation.type == type_)
& (translation.fuzzy == False))
else:
return table.join(translation, 'LEFT',
condition=(translation.res_id == table.id)
& (translation.name == '%s,%s' % (Model.__name__, name))
& (translation.lang == language)
& (translation.type == 'model')
& (translation.fuzzy == False))
def convert_domain(self, domain, tables, Model):
pool = Pool()
Translation = pool.get('ir.translation')
IrModel = pool.get('ir.model')
if not self.translate:
return super(FieldTranslate, self).convert_domain(
domain, tables, Model)
table = Model.__table__()
translation = Translation.__table__()
model = IrModel.__table__()
name, operator, value = domain
join = self._get_translation_join(Model, name,
translation, model, table)
Operator = SQL_OPERATORS[operator]
assert name == self.name
column = Coalesce(NullIf(translation.value, ''),
self.sql_column(table))
where = Operator(column, self._domain_value(operator, value))
if isinstance(where, operators.In) and not where.right:
where = Literal(False)
elif isinstance(where, operators.NotIn) and not where.right:
where = Literal(True)
where = self._domain_add_null(column, operator, value, where)
return tables[None][0].id.in_(join.select(table.id, where=where))
def convert_order(self, name, tables, Model):
pool = Pool()
Translation = pool.get('ir.translation')
IrModel = pool.get('ir.model')
if not self.translate:
return super(FieldTranslate, self).convert_order(name, tables,
Model)
assert name == self.name
table, _ = tables[None]
key = name + '.translation'
if key not in tables:
translation = Translation.__table__()
model = IrModel.__table__()
join = self._get_translation_join(Model, name,
translation, model, table)
if join.left == table:
tables[key] = {
None: (join.right, join.condition),
}
else:
tables[key] = {
None: (join.left.right, join.left.condition),
'translation': {
None: (join.right, join.condition),
},
}
else:
if 'translation' not in tables[key]:
translation, _ = tables[key][None]
else:
translation, _ = tables[key]['translation'][None]
return [Coalesce(NullIf(translation.value, ''),
self.sql_column(table))]
SQLType = namedtuple('SQLType', 'base type')
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