1 # copyright 2014 LOGILAB S.A. (Paris, FRANCE), all rights reserved.

     2 # contact http://www.logilab.fr/ -- mailto:contact@logilab.fr

     3 #

     4 # This file is part of CubicWeb.

     5 #

     6 # CubicWeb is free software: you can redistribute it and/or modify it under the

     7 # terms of the GNU Lesser General Public License as published by the Free

     8 # Software Foundation, either version 2.1 of the License, or (at your option)

     9 # any later version.

    10 #

    11 # CubicWeb is distributed in the hope that it will be useful, but WITHOUT

    12 # ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS

    13 # FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more

    14 # details.

    15 #

    16 # You should have received a copy of the GNU Lesser General Public License along

    17 # with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.

    18 

    19 from yams.buildobjs import EntityType, RelationDefinition, Int, ComputedRelation

    20 

    21 class Person(EntityType):

    22     salary = Int()

    23 

    24 class works_for(RelationDefinition):

    25     subject = 'Person'

    26     object  = 'Company'

    27     cardinality = '?*'

    28 

    29 class Company(EntityType):

    30     total_salary = Int(formula='Any SUM(SA) GROUPBY X WHERE '

    31                        'P works_for X, P salary SA')

    32 

    33 class has_employee(ComputedRelation):

    34     rule = 'O works_for S'

    35     __permissions__ = {'read': ('managers',)}