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How to use _readonly method in dbt-osmosis

Best Python code snippet using dbt-osmosis_python

json_wrappers.py

Source:json_wrappers.py

1# @license2# Copyright 2017 Google Inc.3# Licensed under the Apache License, Version 2.0 (the "License");4# you may not use this file except in compliance with the License.5# You may obtain a copy of the License at6#7#      http://www.apache.org/licenses/LICENSE-2.08#9# Unless required by applicable law or agreed to in writing, software10# distributed under the License is distributed on an "AS IS" BASIS,11# WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.12# See the License for the specific language governing permissions and13# limitations under the License.14"""Facilities for converting JSON <-> Python objects"""15from __future__ import absolute_import16import collections17import copy18import inspect19import numbers20import threading21import numpy as np22import six23from six.moves import range24from .json_utils import encode_json_for_repr25def to_json(value):26    if isinstance(value, np.ndarray):27        return value.tolist()28    try:29        method = value.to_json30    except AttributeError:31        return value32    return method()33class JsonObjectWrapper(object):34    supports_readonly = True35    __slots__ = ('_json_data', '_cached_wrappers', '_lock', '_readonly')36    def __init__(self, json_data=None, _readonly=False, **kwargs):37        if json_data is None:38            json_data = collections.OrderedDict()39        elif isinstance(json_data, type(self)):40            json_data = json_data.to_json()41        elif not isinstance(json_data, dict):42            raise TypeError43        object.__setattr__(self, '_json_data', json_data)44        object.__setattr__(self, '_cached_wrappers', dict())45        object.__setattr__(self, '_lock', threading.RLock())46        object.__setattr__(self, '_readonly', 1 if _readonly else False)47        for k in kwargs:48            setattr(self, k, kwargs[k])49        object.__setattr__(self, '_readonly', _readonly)50    def to_json(self):51        if self._readonly:52            return self._json_data53        with self._lock:54            r = self._json_data.copy()55            for k, (wrapper, _) in six.iteritems(self._cached_wrappers):56                if wrapper is not None:57                    r[k] = to_json(wrapper)58                else:59                    r.pop(k, None)60            return r61    def __deepcopy__(self, memo):62        return type(self)(copy.deepcopy(self.to_json(), memo))63    def __eq__(self, other):64        return type(self) == type(other) and self.to_json() == other.to_json()65    def __repr__(self):66        return u'%s(%s)' % (type(self).__name__, encode_json_for_repr(self.to_json()))67    def _get_wrapped(self, key, wrapped_type):68        with self._lock:69            json_value = self._json_data.get(key)70            cached_value = self._cached_wrappers.get(key)71            if cached_value is not None and cached_value[1] is json_value:72                return cached_value[0]73            kwargs = dict()74            if self._readonly and hasattr(wrapped_type, 'supports_readonly'):75                kwargs['_readonly'] = True76            wrapper = wrapped_type(json_value, **kwargs)77            self._cached_wrappers[key] = wrapper, json_value78            return wrapper79    def _set_wrapped(self, key, value, validator):80        if self._readonly is True:81            raise AttributeError82        value = validator(value)83        with self._lock:84            self._cached_wrappers[key] = (value, self._json_data.get(key))85_types_supporting_validation = frozenset([np.uint64, float, int])86def _normalize_validator(wrapped_type, validator):87    if validator is None:88        supports_validation = getattr(wrapped_type, 'supports_validation', None)89        if (inspect.isroutine(wrapped_type) or supports_validation is not None90                or wrapped_type in _types_supporting_validation):91            if inspect.isroutine(supports_validation):92                validator = supports_validation93            else:94                validator = wrapped_type95        else:96            def validator_func(x):97                if not isinstance(x, wrapped_type):98                    raise TypeError(wrapped_type, x)99                return x100            validator = validator_func101    return validator102def wrapped_property(json_name, wrapped_type, validator=None, doc=None):103    validator = _normalize_validator(wrapped_type, validator)104    return property(fget=lambda self: self._get_wrapped(json_name, wrapped_type),105                    fset=lambda self, value: self._set_wrapped(json_name, value, validator),106                    doc=doc)107def array_wrapper(dtype, shape=None):108    if shape is not None:109        if isinstance(shape, numbers.Number):110            shape = (shape, )111        else:112            shape = tuple(shape)113    def wrapper(value, _readonly=False):114        value = np.array(value, dtype=dtype)115        if _readonly:116            value.setflags(write=False)117        if shape is not None:118            if len(shape) != len(value.shape) or any(119                    expected_size is not None and expected_size != actual_size120                    for expected_size, actual_size in zip(shape, value.shape)):121                raise ValueError('expected shape', shape)122        return value123    wrapper.supports_readonly = True124    return wrapper125def text_type(value):126    return six.text_type(value)127def optional(wrapper, default_value=None, validator=None):128    def modified_wrapper(value, **kwargs):129        if value is None:130            return default_value131        return wrapper(value, **kwargs)132    if hasattr(wrapper, 'supports_readonly'):133        modified_wrapper.supports_readonly = True134    validator = _normalize_validator(wrapper, validator)135    def modified_validator(value, **kwargs):136        if value is None:137            return default_value138        return validator(value, **kwargs)139    modified_wrapper.supports_validation = modified_validator140    return modified_wrapper141class MapBase(object):142    __slots__ = ()143    pass144def typed_string_map(wrapped_type, validator=None):145    validator = _normalize_validator(wrapped_type, validator)146    class Map(JsonObjectWrapper, MapBase):147        supports_validation = True148        __slots__ = ()149        def __init__(self, json_data=None, _readonly=False):150            if isinstance(json_data, MapBase):151                json_data = json_data.to_json()152            elif json_data is not None:153                new_map = collections.OrderedDict()154                for k, v in six.viewitems(json_data):155                    validator(v)156                    new_map[k] = to_json(v)157                json_data = new_map158            super(Map, self).__init__(json_data, _readonly=_readonly)159        def clear(self):160            with self._lock:161                self._cached_wrappers.clear()162                self._json_data.clear()163        def keys(self):164            return six.viewkeys(self._json_data)165        def iteritems(self):166            for key in self:167                yield (key, self[key])168        def itervalues(self):169            for key in self:170                yield self[key]171        def get(self, key, default_value=None):172            with self._lock:173                if key in self._json_data:174                    return self[key]175                return default_value176        def __len__(self):177            return len(self._json_data)178        def __contains__(self, key):179            return key in self._json_data180        def __getitem__(self, key):181            with self._lock:182                if key not in self._json_data:183                    raise KeyError(key)184                return self._get_wrapped(key, wrapped_type)185        def __setitem__(self, key, value):186            with self._lock:187                self._set_wrapped(key, value, validator)188                self._json_data[key] = None # placeholder189        def __delitem__(self, key):190            if self._readonly:191                raise AttributeError192            with self._lock:193                del self._json_data[key]194                self._cached_wrappers.pop(key, None)195        def __iter__(self):196            return iter(self._json_data)197    return Map198def typed_map(key_type, value_type, key_validator=None, value_validator=None):199    key_validator = _normalize_validator(key_type, key_validator)200    value_validator = _normalize_validator(value_type, value_validator)201    class Map(JsonObjectWrapper, MapBase):202        supports_validation = True203        __slots__ = ()204        def __init__(self, json_data=None, _readonly=False):205            if isinstance(json_data, MapBase):206                json_data = json_data.to_json()207            elif json_data is not None:208                new_map = collections.OrderedDict()209                for k, v in six.viewitems(json_data):210                    key_validator(k)211                    value_validator(v)212                    new_map[str(k)] = to_json(v)213                json_data = new_map214            super(Map, self).__init__(json_data, _readonly=_readonly)215        def clear(self):216            with self._lock:217                self._cached_wrappers.clear()218                self._json_data.clear()219        def keys(self):220            return [key_validator(k) for k in six.viewkeys(self._json_data)]221        def iteritems(self):222            for key in self:223                yield (key, self[key])224        def itervalues(self):225            for key in self:226                yield self[key]227        def get(self, key, default_value=None):228            key = str(key)229            with self._lock:230                if key in self._json_data:231                    return self._get_wrapped(key, value_type)232                return default_value233        def __len__(self):234            return len(self._json_data)235        def __contains__(self, key):236            return str(key) in self._json_data237        def __getitem__(self, key):238            key = str(key)239            with self._lock:240                if key not in self._json_data:241                    raise KeyError(key)242                return self._get_wrapped(key, value_type)243        def __setitem__(self, key, value):244            key = str(key)245            with self._lock:246                self._set_wrapped(key, value, value_validator)247                self._json_data[key] = None # placeholder248        def __delitem__(self, key):249            if self._readonly:250                raise AttributeError251            key = str(key)252            with self._lock:253                del self._json_data[key]254                self._cached_wrappers.pop(key, None)255        def __iter__(self):256            for key in self._json_data:257                yield key_validator(key)258    return Map259def typed_set(wrapped_type):260    def wrapper(x, _readonly=False):261        set_type = frozenset if _readonly else set262        kwargs = dict()263        if hasattr(wrapped_type, 'supports_readonly'):264            kwargs.update(_readonly=True)265        if x is None:266            return set_type()267        return set_type(wrapped_type(v, **kwargs) for v in x)268    wrapper.supports_readonly = True269    return wrapper270def typed_list(wrapped_type, validator=None):271    validator = _normalize_validator(wrapped_type, validator)272    class TypedList(object):273        supports_readonly = True274        supports_validation = True275        __slots__ = ('_readonly', '_data')276        def __init__(self, json_data=None, _readonly=False):277            if json_data is None:278                json_data = []279            if not isinstance(json_data, (list, tuple, np.ndarray)):280                raise ValueError281            self._readonly = _readonly282            self._data = [validator(x) for x in json_data]283        def __len__(self):284            return len(self._data)285        def __getitem__(self, key):286            return self._data[key]287        def __delitem__(self, key):288            if self._readonly:289                raise AttributeError290            del self._data[key]291        def __setitem__(self, key, value):292            if self._readonly:293                raise AttributeError294            if isinstance(key, slice):295                values = [validator(x) for x in value]296                self._data[key] = values297            else:298                value = validator(x)299                self._data[key] = value300        def __iter__(self):301            return iter(self._data)302        def append(self, x):303            if self._readonly:304                raise AttributeError305            x = validator(x)306            self._data.append(x)307        def extend(self, values):308            for x in values:309                self.append(x)310        def insert(self, index, x):311            x = validator(x)312            self._data.insert(index, x)313        def pop(self, index=-1):314            return self._data.pop(index)315        def to_json(self):316            return [to_json(x) for x in self._data]317        def __deepcopy__(self, memo):318            return type(self)(copy.deepcopy(self.to_json(), memo))319        def __repr__(self):320            return encode_json_for_repr(self.to_json())321    return TypedList322def number_or_string(value):323    if (not isinstance(value, numbers.Real) and not isinstance(value, six.text_type)):324        raise TypeError...

read_only_dict.py

Source:read_only_dict.py

1"""Read only dictionary."""2from typing import Any, TypeVar3def _readonly(*args: Any, **kwargs: Any) -> Any:4    """Raise an exception when a read only dict is modified."""5    raise RuntimeError("Cannot modify ReadOnlyDict")6Key = TypeVar("Key")7Value = TypeVar("Value")8class ReadOnlyDict(dict[Key, Value]):9    """Read only version of dict that is compatible with dict types."""10    __setitem__ = _readonly11    __delitem__ = _readonly12    pop = _readonly13    popitem = _readonly14    clear = _readonly15    update = _readonly...

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