# 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

# 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/>.

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

class Person(EntityType):

    salary = Int()

class works_for(RelationDefinition):

    subject = 'Person'

    object  = 'Company'

    cardinality = '?*'

class Company(EntityType):

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

                       'P works_for X, P salary SA')

class has_employee(ComputedRelation):

    rule = 'O works_for S'