[source storage] refactor source sql generation and results handling to allow repository side callbacks
for instance with the BytesFileSystemStorage, before this change:
* fspath, _fsopen function were stored procedures executed on the database
-> files had to be available both on the repository *and* the database host
* we needed implementation for each handled database
Now, those function are python callbacks executed when necessary on the
repository side, on data comming from the database.
The litle cons are:
* you can't do anymore restriction on mapped attributes
* you can't write queries which will return in the same rset column
some mapped attributes (or not mapped the same way) / some not
This seems much acceptable since:
* it's much more easy to handle when you start having the db on another host
than the repo
* BFSS works seemlessly on any backend now
* you don't bother that much about the cons (at least in the bfss case):
you usually don't do any restriction on Bytes...
Bonus points: BFSS is more efficient (no queries under the cover as it
was done in the registered procedure) and we have a much nicer/efficient
fspath implementation.
IMO, that rocks :D
# pylint: disable-msg=W0622
"""%(distname)s application packaging information"""
modname = '%(cubename)s'
distname = '%(distname)s'
numversion = (0, 1, 0)
version = '.'.join(str(num) for num in numversion)
license = 'LCL'
copyright = '''Copyright (c) %(year)s %(author)s.
%(author-web-site)s -- mailto:%(author-email)s'''
author = '%(author)s'
author_email = '%(author-email)s'
short_desc = '%(shortdesc)s'
long_desc = '''%(longdesc)s'''
web = 'http://www.cubicweb.org/project/%%s' %% distname
from os import listdir as _listdir
from os.path import join, isdir, exists
from glob import glob
THIS_CUBE_DIR = join('share', 'cubicweb', 'cubes', modname)
def listdir(dirpath):
return [join(dirpath, fname) for fname in _listdir(dirpath)
if fname[0] != '.' and not fname.endswith('.pyc')
and not fname.endswith('~')
and not isdir(join(dirpath, fname))]
data_files = [
# common files
[THIS_CUBE_DIR, [fname for fname in glob('*.py') if fname != 'setup.py']],
]
# check for possible extended cube layout
for dname in ('entities', 'views', 'sobjects', 'hooks', 'schema', 'data', 'i18n', 'migration'):
if isdir(dname):
data_files.append([join(THIS_CUBE_DIR, dname), listdir(dname)])
# Note: here, you'll need to add subdirectories if you want
# them to be included in the debian package
__depends_cubes__ = {}
__depends__ = {'cubicweb': '>= 3.6.0'}
__use__ = (%(dependancies)s)
__recommend__ = ()