"""workflow related schemas
:organization: Logilab
:copyright: 2001-2009 LOGILAB S.A. (Paris, FRANCE), license is LGPL v2.
:contact: http://www.logilab.fr/ -- mailto:contact@logilab.fr
:license: GNU Lesser General Public License, v2.1 - http://www.gnu.org/licenses
"""
__docformat__ = "restructuredtext en"
_ = unicode
from yams.buildobjs import (EntityType, RelationType, SubjectRelation,
ObjectRelation, RichString, String)
from cubicweb.schema import RQLConstraint, RQLUniqueConstraint
from cubicweb.schemas import (META_ETYPE_PERMS, META_RTYPE_PERMS,
HOOKS_RTYPE_PERMS)
class Workflow(EntityType):
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
maxsize=256)
description = RichString(fulltextindexed=True, default_format='text/rest',
description=_('semantic description of this workflow'))
workflow_of = SubjectRelation('CWEType', cardinality='+*',
description=_('entity types which may use this workflow'),
constraints=[RQLConstraint('O final FALSE')])
initial_state = SubjectRelation('State', cardinality='?*',
constraints=[RQLConstraint('O state_of S')],
description=_('initial state for this workflow'))
class default_workflow(RelationType):
"""default workflow for an entity type"""
permissions = META_RTYPE_PERMS
subject = 'CWEType'
object = 'Workflow'
cardinality = '?*'
constraints = [RQLConstraint('S final FALSE, O workflow_of S')]
class State(EntityType):
"""used to associate simple states to an entity type and/or to define
workflows
"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
maxsize=256)
description = RichString(fulltextindexed=True, default_format='text/rest',
description=_('semantic description of this state'))
# XXX should be on BaseTransition w/ AND/OR selectors when we will
# implements #345274
allowed_transition = SubjectRelation('BaseTransition', cardinality='**',
constraints=[RQLConstraint('S state_of WF, O transition_of WF')],
description=_('allowed transitions from this state'))
state_of = SubjectRelation('Workflow', cardinality='1*', composite='object',
description=_('workflow to which this state belongs'),
constraints=[RQLUniqueConstraint('S name N, Y state_of O, Y name N')])
class BaseTransition(EntityType):
"""abstract base class for transitions"""
permissions = META_ETYPE_PERMS
name = String(required=True, indexed=True, internationalizable=True,
maxsize=256)
type = String(vocabulary=(_('normal'), _('auto')), default='normal')
description = RichString(fulltextindexed=True,
description=_('semantic description of this transition'))
condition = SubjectRelation('RQLExpression', cardinality='*?', composite='subject',
description=_('a RQL expression which should return some results, '
'else the transition won\'t be available. '
'This query may use X and U variables '
'that will respectivly represents '
'the current entity and the current user'))
require_group = SubjectRelation('CWGroup', cardinality='**',
description=_('group in which a user should be to be '
'allowed to pass this transition'))
transition_of = SubjectRelation('Workflow', cardinality='1*', composite='object',
description=_('workflow to which this transition belongs'),
constraints=[RQLUniqueConstraint('S name N, Y transition_of O, Y name N')])
class Transition(BaseTransition):
"""use to define a transition from one or multiple states to a destination
states in workflow's definitions.
"""
__specializes_schema__ = True
destination_state = SubjectRelation(
'State', cardinality='1*',
constraints=[RQLConstraint('S transition_of WF, O state_of WF')],
description=_('destination state for this transition'))
class WorkflowTransition(BaseTransition):
"""special transition allowing to go through a sub-workflow"""
__specializes_schema__ = True
subworkflow = SubjectRelation('Workflow', cardinality='1*',
constraints=[RQLConstraint('S transition_of WF, WF workflow_of ET, O workflow_of ET')])
# XXX use exit_of and inline it
subworkflow_exit = SubjectRelation('SubWorkflowExitPoint', cardinality='*1',
composite='subject')
class SubWorkflowExitPoint(EntityType):
"""define how we get out from a sub-workflow"""
subworkflow_state = SubjectRelation(
'State', cardinality='1*',
constraints=[RQLConstraint('T subworkflow_exit S, T subworkflow WF, O state_of WF')],
description=_('subworkflow state'))
destination_state = SubjectRelation(
'State', cardinality='?*',
constraints=[RQLConstraint('T subworkflow_exit S, T transition_of WF, O state_of WF')],
description=_('destination state. No destination state means that transition '
'should go back to the state from which we\'ve entered the '
'subworkflow.'))
class TrInfo(EntityType):
"""workflow history item"""
# 'add' security actually done by hooks
permissions = {
'read': ('managers', 'users', 'guests',), # XXX U has_read_permission O ?
'add': ('managers', 'users', 'guests',),
'delete': (), # XXX should we allow managers to delete TrInfo?
'update': ('managers', 'owners',),
}
from_state = SubjectRelation('State', cardinality='1*')
to_state = SubjectRelation('State', cardinality='1*')
# make by_transition optional because we want to allow managers to set
# entity into an arbitrary state without having to respect wf transition
by_transition = SubjectRelation('BaseTransition', cardinality='?*')
comment = RichString(fulltextindexed=True)
# get actor and date time using owned_by and creation_date
class from_state(RelationType):
permissions = HOOKS_RTYPE_PERMS.copy()
inlined = True
class to_state(RelationType):
permissions = {
'read': ('managers', 'users', 'guests',),
'add': ('managers',),
'delete': (),
}
inlined = True
class by_transition(RelationType):
# 'add' security actually done by hooks
permissions = {
'read': ('managers', 'users', 'guests',),
'add': ('managers', 'users', 'guests',),
'delete': (),
}
inlined = True
class workflow_of(RelationType):
"""link a workflow to one or more entity type"""
permissions = META_RTYPE_PERMS
class state_of(RelationType):
"""link a state to one or more workflow"""
permissions = META_RTYPE_PERMS
class transition_of(RelationType):
"""link a transition to one or more workflow"""
permissions = META_RTYPE_PERMS
class subworkflow(RelationType):
"""link a transition to one or more workflow"""
permissions = META_RTYPE_PERMS
inlined = True
class exit_point(RelationType):
"""link a transition to one or more workflow"""
permissions = META_RTYPE_PERMS
class subworkflow_state(RelationType):
"""link a transition to one or more workflow"""
permissions = META_RTYPE_PERMS
inlined = True
class initial_state(RelationType):
"""indicate which state should be used by default when an entity using
states is created
"""
permissions = META_RTYPE_PERMS
inlined = True
class destination_state(RelationType):
"""destination state of a transition"""
permissions = META_RTYPE_PERMS
inlined = True
class allowed_transition(RelationType):
"""allowed transition from this state"""
permissions = META_RTYPE_PERMS
# "abstract" relations, set by WorkflowableEntityType ##########################
class custom_workflow(RelationType):
"""allow to set a specific workflow for an entity"""
permissions = META_RTYPE_PERMS
cardinality = '?*'
constraints = [RQLConstraint('S is ET, O workflow_of ET')]
object = 'Workflow'
class wf_info_for(RelationType):
"""link a transition information to its object"""
# 'add' security actually done by hooks
permissions = {
'read': ('managers', 'users', 'guests',),
'add': ('managers', 'users', 'guests',),
'delete': (),
}
inlined = True
cardinality = '1*'
composite = 'object'
fulltext_container = composite
subject = 'TrInfo'
class in_state(RelationType):
"""indicate the current state of an entity"""
permissions = HOOKS_RTYPE_PERMS
# not inlined intentionnaly since when using ldap sources, user'state
# has to be stored outside the CWUser table
inlined = False
cardinality = '1*'
constraints = [RQLConstraint('S is ET, O state_of WF, WF workflow_of ET')]
object = 'State'