[CWEP002] introduce RQLRelationRewriter
Refactor existing RQLRewriter for later reuse of rewriting relation as specified
by CWEP002. Work is different because we simply want to replace a relation by
another rql snippet and we don't have to bother with EXISTS, subqueries and all.
This rewriter is not yet plugged into the querier.
Depends on yams 0.40 API.
Related to #3546717
# copyright 2014 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
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# FOR A PARTICULAR PURPOSE. See the GNU Lesser General Public License for more
# details.
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# You should have received a copy of the GNU Lesser General Public License along
# with CubicWeb. If not, see <http://www.gnu.org/licenses/>.
from logilab.common.testlib import TestCase, unittest_main
from cubicweb.toolsutils import RQLExecuteMatcher
class RQLExecuteMatcherTests(TestCase):
def matched_query(self, text):
match = RQLExecuteMatcher.match(text)
if match is None:
return None
return match['rql_query']
def test_unknown_function_dont_match(self):
self.assertIsNone(self.matched_query('foo'))
self.assertIsNone(self.matched_query('rql('))
self.assertIsNone(self.matched_query('hell("")'))
self.assertIsNone(self.matched_query('eval("rql(\'bla\''))
def test_rql_other_parameters_dont_match(self):
self.assertIsNone(self.matched_query('rql("Any X WHERE X eid %(x)s")'))
self.assertIsNone(self.matched_query('rql("Any X WHERE X eid %(x)s", {'))
self.assertIsNone(self.matched_query('session.execute("Any X WHERE X eid %(x)s")'))
self.assertIsNone(self.matched_query('session.execute("Any X WHERE X eid %(x)s", {'))
def test_rql_function_match(self):
for func_expr in ('rql', 'session.execute'):
query = self.matched_query('%s("Any X WHERE X is ' % func_expr)
self.assertEqual(query, 'Any X WHERE X is ')
def test_offseted_rql_function_match(self):
"""check indentation is allowed"""
for func_expr in (' rql', ' session.execute'):
query = self.matched_query('%s("Any X WHERE X is ' % func_expr)
self.assertEqual(query, 'Any X WHERE X is ')
if __name__ == '__main__':
unittest_main()