# 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, ComputedRelation

class Employee(EntityType):

    pass

class employees(RelationDefinition):

    subject = 'Company'

    object = 'Employee'

class associates(RelationDefinition):

    subject = 'Company'

    object = 'Employee'

class works_for(ComputedRelation):

    rule = 'O employees S, NOT EXISTS (O associates S)'

class Company(EntityType):

    pass

class Note(EntityType):

    pass

class concerns(RelationDefinition):

    subject = 'Note'

    object = 'Employee'