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 : evaluator.py

# orm/evaluator.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 operator
from ..sql import operators
from .. import util

class UnevaluatableError(Exception):
    pass

_straight_ops = set(getattr(operators, op)
                    for op in ('add', 'mul', 'sub',
                               'div',
                               'mod', 'truediv',
                               'lt', 'le', 'ne', 'gt', 'ge', 'eq'))

_notimplemented_ops = set(getattr(operators, op)
                          for op in ('like_op', 'notlike_op', 'ilike_op',
                                     'notilike_op', 'between_op', 'in_op',
                                     'notin_op', 'endswith_op', 'concat_op'))

class EvaluatorCompiler(object):

def __init__(self, target_cls=None):
        self.target_cls = target_cls

def process(self, clause):
        meth = getattr(self, "visit_%s" % clause.__visit_name__, None)
        if not meth:
            raise UnevaluatableError(
                "Cannot evaluate %s" % type(clause).__name__)
        return meth(clause)

def visit_grouping(self, clause):
        return self.process(clause.element)

def visit_null(self, clause):
        return lambda obj: None

def visit_false(self, clause):
        return lambda obj: False

def visit_true(self, clause):
        return lambda obj: True

def visit_column(self, clause):
        if 'parentmapper' in clause._annotations:
            parentmapper = clause._annotations['parentmapper']
            if self.target_cls and not issubclass(
                    self.target_cls, parentmapper.class_):
                util.warn(
                    "Can't do in-Python evaluation of criteria against "
                    "alternate class %s; "
                    "expiration of objects will not be accurate "
                    "and/or may fail.  synchronize_session should be set to "
                    "False or 'fetch'. "
                    "This warning will be an exception "
                    "in 1.0." % parentmapper.class_
                )
            key = parentmapper._columntoproperty[clause].key
        else:
            key = clause.key

get_corresponding_attr = operator.attrgetter(key)
        return lambda obj: get_corresponding_attr(obj)

def visit_clauselist(self, clause):
        evaluators = list(map(self.process, clause.clauses))
        if clause.operator is operators.or_:
            def evaluate(obj):
                has_null = False
                for sub_evaluate in evaluators:
                    value = sub_evaluate(obj)
                    if value:
                        return True
                    has_null = has_null or value is None
                if has_null:
                    return None
                return False
        elif clause.operator is operators.and_:
            def evaluate(obj):
                for sub_evaluate in evaluators:
                    value = sub_evaluate(obj)
                    if not value:
                        if value is None:
                            return None
                        return False
                return True
        else:
            raise UnevaluatableError(
                "Cannot evaluate clauselist with operator %s" %
                clause.operator)

return evaluate

def visit_binary(self, clause):
        eval_left, eval_right = list(map(self.process,
                                         [clause.left, clause.right]))
        operator = clause.operator
        if operator is operators.is_:
            def evaluate(obj):
                return eval_left(obj) == eval_right(obj)
        elif operator is operators.isnot:
            def evaluate(obj):
                return eval_left(obj) != eval_right(obj)
        elif operator in _straight_ops:
            def evaluate(obj):
                left_val = eval_left(obj)
                right_val = eval_right(obj)
                if left_val is None or right_val is None:
                    return None
                return operator(eval_left(obj), eval_right(obj))
        else:
            raise UnevaluatableError(
                "Cannot evaluate %s with operator %s" %
                (type(clause).__name__, clause.operator))
        return evaluate

def visit_unary(self, clause):
        eval_inner = self.process(clause.element)
        if clause.operator is operators.inv:
            def evaluate(obj):
                value = eval_inner(obj)
                if value is None:
                    return None
                return not value
            return evaluate
        raise UnevaluatableError(
            "Cannot evaluate %s with operator %s" %
            (type(clause).__name__, clause.operator))

def visit_bindparam(self, clause):
        val = clause.value
        return lambda obj: val

${this.title}

Code Editor : evaluator.py