Page MenuHomec4science
Files F66145608

check_field_type.py
No OneTemporary
Actions

File Metadata

Created
Sat, Jun 8, 14:42

check_field_type.py
View Options

# -*- coding: utf-8 -*-
##
## This file is part of Invenio.
## Copyright (C) 2004, 2005, 2006, 2007, 2008, 2010, 2011, 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.
from werkzeug.utils import import_string
from invenio.utils.datastructures import LaziestDict
CFG_BIBFIELD_TYPES = LaziestDict(lambda key: import_string('invenio.legacy.bibfield.functions.%s:%s' % (key, key)))
def check_field_type(record, field, field_type, subfield=None, continuable=True):
"""
Checks if record[field.subfield] is of type "field_type"
@note: If record[field.subfield] is a list or a dictionary then it checks
every single element inside is type is a "system type"
@param record: BibFieldDict where the record is stored
@param field: Main json ID or field name to make test on
@param field_type: Field_Type defined by the user inside bibfield_types or a system type
i.e.: "datetime.datetime"
@param subfield: If this parameter is present, instead of applying the checker
to the field, it is applied to record['field.subfield']
"""
field = '[n]' in field and field[:-3] or field
key = subfield and "%s.%s" % (field, subfield) or field
if not key in record:
return
from invenio.legacy.bibfield.bibfield_utils import InvenioBibFieldContinuableError, \
InvenioBibFieldError
error = continuable and InvenioBibFieldContinuableError or InvenioBibFieldError
new_type = 'is_type_%s' % (field_type, )
if new_type in CFG_BIBFIELD_TYPES:
globals()[new_type] = CFG_BIBFIELD_TYPES[new_type]
if not eval('%s(record[key])' % (new_type,)):
raise error("Field %s should be of type '%s'" % (key, field_type))
else:
if not check_field_sys_type(record[key], field_type):
raise error("Field %s should be of type '%s'" % (key, field_type))
def check_field_sys_type(value, field_type):
"""
Helper function to check if value is of field_type
"""
if isinstance(value, list):
for element in value:
if not check_field_sys_type(element, field_type):
return False
elif isinstance(value, dict):
for element in value.itervalues():
if not check_field_sys_type(element, field_type):
return False
elif value:
new_type = field_type.split('.')[0]
globals()[new_type] = __import__(new_type)
if not isinstance(value, eval(field_type)):
return False
return True

Event Timeline

c4science · Help