def __check_gp(self):
        gp_keys = r.keys('fragments:*:gp')
        for gpk in gp_keys:
            stored_gp = GraphPattern(r.smembers(gpk))

            mapping = stored_gp.mapping(self._graph_pattern)
            if mapping:
                return gpk.split(':')[1], mapping
        return None
  Copyright (C) 2015 Center for Open Middleware.
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
  Licensed under the Apache License, Version 2.0 (the "License");
  you may not use this file except in compliance with the License.
  You may obtain a copy of the License at 

            http://www.apache.org/licenses/LICENSE-2.0

  Unless required by applicable law or agreed to in writing, software
  distributed under the License is distributed on an "AS IS" BASIS,
  WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
  See the License for the specific language governing permissions and
  limitations under the License.
#-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=-=#
"""

from sdh.curator.actions.core.utils import GraphPattern

__author__ = 'Fernando Serena'


gp1 = GraphPattern()
gp1.add('?a scm:hasBranch ?b')

gp2 = GraphPattern()
gp2.add('?s a scm:Repository')
gp2.add('?s scm:hasBranch ?b')
gp2.add('?b doap:name ?n')

mapping = gp2.mapping(gp1)
print mapping