[datafeed cw parser] refactor: split logic that was in the parser
into:
* an "item builder" component, turning an etree xml node into a specific
python dictionnary representing an entity
* "action" components, selected given an entity, a relation and its role
in the relation, and responsible to link the entity to given related
items (eg dictionnary)
This changes make it easy to add new action or to override existing
one's behaviour according to the entity, the relation, etc...
Also refactor the xml view so one can also override what's
included in the tag used to mark the entity as used by a relation,
hopefully allowing to reduce the number of http requests needed for
a full datafeed import.
# copyright 2003-2010 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
#
# This file is part of CubicWeb.
#
# CubicWeb is free software: you can redistribute it and/or modify it under the
# terms of the GNU Lesser General Public License as published by the Free
# Software Foundation, either version 2.1 of the License, or (at your option)
# any later version.
#
# CubicWeb 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 Lesser General Public License for more
# details.
#
# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
"""Basic views for python values (eg without any result set)
"""
__docformat__ = "restructuredtext en"
from cubicweb.view import View
from cubicweb.selectors import match_kwargs
class PyValTableView(View):
"""display a list of list of values into an html table.
Take care, content is NOT xml-escaped.
"""
__regid__ = 'pyvaltable'
__select__ = match_kwargs('pyvalue')
def call(self, pyvalue, headers=None):
if headers is None:
headers = self._cw.form.get('headers')
w = self.w
w(u'<table class="listing">\n')
if headers:
w(u'<thead>')
w(u'<tr>')
for header in headers:
w(u'<th>%s</th>' % header)
w(u'</tr>\n')
w(u'</thead>')
w(u'<tbody>')
for row in pyvalue:
w(u'<tr>')
for cell in row:
w(u'<td>%s</td>' % cell)
w(u'</tr>\n')
w(u'</tbody>')
w(u'</table>\n')
class PyValListView(View):
"""display a list of values into an html list.
Take care, content is NOT xml-escaped.
"""
__regid__ = 'pyvallist'
__select__ = match_kwargs('pyvalue')
def call(self, pyvalue):
self.w(u'<ul>\n')
for line in pyvalue:
self.w(u'<li>%s</li>\n' % line)
self.w(u'</ul>\n')