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wrappers.py
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Tue, Dec 3, 14:58

wrappers.py
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# -*- coding: utf-8 -*-
## This file is part of Invenio.
## Copyright (C) 2013 CERN.
##
## Invenio is free software; you can redistribute it and/or
## modify it under the terms of the GNU General Public License as
## published by the Free Software Foundation; either version 2 of the
## License, or (at your option) any later version.
##
## Invenio is distributed in the hope that it will be useful, but
## WITHOUT ANY WARRANTY; without even the implied warranty of
## MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the GNU
## General Public License for more details.
##
## You should have received a copy of the GNU General Public License
## along with Invenio; if not, write to the Free Software Foundation, Inc.,
## 59 Temple Place, Suite 330, Boston, MA 02111-1307, USA.
import re
from invenio.base.utils import try_to_eval
from invenio.utils.datastructures import SmartDict
class SmartJson(SmartDict):
"""
"""
def __init__(self, json=None, bson=None):
super(SmartJson, self).__init__(json)
self._dict_bson = bson if not bson is None else SmartDict()
if '__meta_metadata__' in bson:
try:
self._dict['__meta_metadata__'].update(bson.get('__meta_metadata__', {}))
except KeyError:
self._dict['__meta_metadata__'] = bson.get('__meta_metadata__', {})
def __getitem__(self, key):
"""
"""
try:
return self._dict_bson[key]
except KeyError:
#We will try to fin the key inside the json dict and load it
pass
main_key = SmartDict.main_key_pattern.sub('', key)
if main_key in self._dict['__meta_metadata__']['__aliases__']:
try:
rest_of_key = SmartDict.main_key_pattern.findall(key)[0]
except IndexError:
rest_of_key = ''
return self[self._dict['__meta_metadata__']['__aliases__'][main_key] + rest_of_key]
if main_key in self._dict['__meta_metadata__']['__do_not_dump__']:
self._dict_bson[main_key] = try_to_eval(self._dict['__meta_metadata__'][main_key]['function'],
self.field_function_context, self=self)
else:
try:
load_function = self._dict['__meta_metadata__'][main_key]['loads'] or 'lambda x:x' # Never going to be used, jus for security
load_function = try_to_eval(load_function)
self._dict_bson[main_key] = load_function(self._dict[main_key])
except KeyError:
self._dict_bson[main_key] = self._dict[main_key]
return self._dict_bson[key]
def __setitem__(self, key, value, extend=False):
"""
"""
self._dict_bson.set(key, value, extend)
main_key = SmartDict.main_key_patter.sub('', key)
try:
dump_function = self._dict['__meta_metadata__'][main_key]['dumps']
if dump_function:
self._dict[main_key] = dump_function(self._dict_bson[main_key])
else:
self._dict[main_key] = self._dict_bson[main_key]
except KeyError:
self._dict[main_key] = self._dict_bson[main_key]
def invalidate_cache(self, key):
"""
"""
main_key = SmartDict.main_key_patter.sub('', key)
del self._dict_bson[key]
def dumps(self):
"""docstring for dumps"""
for key in self._dict_bson:
try:
if key in self._dict['__meta_metadata__']['__do_not_dump__']:
self._dict[key] = None
continue
dump_function = self._dict['__meta_metadata__'][key]['dumps']
if dump_function:
dump_function = try_to_eval(dump_function)
self._dict[key] = dump_function(self._dict_bson[key])
else:
self._dict[key] = self._dict_bson[key]
except KeyError, e:
self._dict[key] = self._dict_bson[key]
return self._dict
def save(self):
"""docstring for save"""
raise NotImplementedError()
@property
def field_function_context(self):
"""docstring for field_function_context"""
raise NotImplementedError()

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