entities/wfobjs.py
author Julien Cristau <julien.cristau@logilab.fr>
Thu, 05 Feb 2015 15:35:34 +0100
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parent 9928 0d831b40fa48
child 10095 200bd6a601dc
permissions -rw-r--r--
[pkg] 3.19.9
Ignore whitespace changes - Everywhere: Within whitespace: At end of lines:
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# copyright 2003-2012 LOGILAB S.A. (Paris, FRANCE), all rights reserved.
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# contact http://www.logilab.fr/ -- mailto:contact@logilab.fr
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#
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# This file is part of CubicWeb.
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#
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# CubicWeb is free software: you can redistribute it and/or modify it under the
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# terms of the GNU Lesser General Public License as published by the Free
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# Software Foundation, either version 2.1 of the License, or (at your option)
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# any later version.
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#
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# CubicWeb is distributed in the hope that it will be useful, but WITHOUT
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# ANY WARRANTY; without even the implied warranty of MERCHANTABILITY or FITNESS
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# FOR A PARTICULAR PURPOSE.  See the GNU Lesser General Public License for more
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# details.
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#
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# You should have received a copy of the GNU Lesser General Public License along
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# with CubicWeb.  If not, see <http://www.gnu.org/licenses/>.
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"""workflow handling:
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* entity types defining workflow (Workflow, State, Transition...)
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* workflow history (TrInfo)
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* adapter for workflowable entities (IWorkflowableAdapter)
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"""
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__docformat__ = "restructuredtext en"
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from logilab.common.decorators import cached, clear_cache
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from logilab.common.deprecation import deprecated
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from cubicweb.entities import AnyEntity, fetch_config
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from cubicweb.view import EntityAdapter
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from cubicweb.predicates import relation_possible
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class WorkflowException(Exception): pass
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class Workflow(AnyEntity):
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    __regid__ = 'Workflow'
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    @property
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    def initial(self):
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        """return the initial state for this workflow"""
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        return self.initial_state and self.initial_state[0] or None
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    def is_default_workflow_of(self, etype):
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        """return True if this workflow is the default workflow for the given
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        entity type
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        """
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        return any(et for et in self.reverse_default_workflow
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                   if et.name == etype)
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    def iter_workflows(self, _done=None):
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        """return an iterator on actual workflows, eg this workflow and its
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        subworkflows
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        """
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        # infinite loop safety belt
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        if _done is None:
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            _done = set()
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        yield self
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        _done.add(self.eid)
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        for tr in self._cw.execute('Any T WHERE T is WorkflowTransition, '
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                                   'T transition_of WF, WF eid %(wf)s',
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                                   {'wf': self.eid}).entities():
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            if tr.subwf.eid in _done:
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                continue
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            for subwf in tr.subwf.iter_workflows(_done):
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                yield subwf
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    # state / transitions accessors ############################################
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    def state_by_name(self, statename):
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        rset = self._cw.execute('Any S, SN WHERE S name SN, S name %(n)s, '
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                                'S state_of WF, WF eid %(wf)s',
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                                {'n': statename, 'wf': self.eid})
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        if rset:
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            return rset.get_entity(0, 0)
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        return None
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    def state_by_eid(self, eid):
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        rset = self._cw.execute('Any S, SN WHERE S name SN, S eid %(s)s, '
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                                'S state_of WF, WF eid %(wf)s',
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                                {'s': eid, 'wf': self.eid})
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        if rset:
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            return rset.get_entity(0, 0)
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        return None
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    def transition_by_name(self, trname):
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        rset = self._cw.execute('Any T, TN WHERE T name TN, T name %(n)s, '
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                                'T transition_of WF, WF eid %(wf)s',
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                                {'n': trname, 'wf': self.eid})
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        if rset:
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            return rset.get_entity(0, 0)
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        return None
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    def transition_by_eid(self, eid):
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        rset = self._cw.execute('Any T, TN WHERE T name TN, T eid %(t)s, '
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                                'T transition_of WF, WF eid %(wf)s',
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                                {'t': eid, 'wf': self.eid})
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        if rset:
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            return rset.get_entity(0, 0)
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        return None
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    # wf construction methods ##################################################
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    def add_state(self, name, initial=False, **kwargs):
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        """add a state to this workflow"""
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        state = self._cw.create_entity('State', name=unicode(name), **kwargs)
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        self._cw.execute('SET S state_of WF WHERE S eid %(s)s, WF eid %(wf)s',
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                         {'s': state.eid, 'wf': self.eid})
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        if initial:
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            assert not self.initial, "Initial state already defined as %s" % self.initial
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            self._cw.execute('SET WF initial_state S '
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                             'WHERE S eid %(s)s, WF eid %(wf)s',
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                             {'s': state.eid, 'wf': self.eid})
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   115
        return state
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   116
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    def _add_transition(self, trtype, name, fromstates,
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   118
                        requiredgroups=(), conditions=(), **kwargs):
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   119
        tr = self._cw.create_entity(trtype, name=unicode(name), **kwargs)
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   120
        self._cw.execute('SET T transition_of WF '
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                         'WHERE T eid %(t)s, WF eid %(wf)s',
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                         {'t': tr.eid, 'wf': self.eid})
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        assert fromstates, fromstates
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        if not isinstance(fromstates, (tuple, list)):
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   125
            fromstates = (fromstates,)
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        for state in fromstates:
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            if hasattr(state, 'eid'):
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                state = state.eid
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   129
            self._cw.execute('SET S allowed_transition T '
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                             'WHERE S eid %(s)s, T eid %(t)s',
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                             {'s': state, 't': tr.eid})
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        tr.set_permissions(requiredgroups, conditions, reset=False)
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        return tr
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   134
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   135
    def add_transition(self, name, fromstates, tostate=None,
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                       requiredgroups=(), conditions=(), **kwargs):
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        """add a transition to this workflow from some state(s) to another"""
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   138
        tr = self._add_transition('Transition', name, fromstates,
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                                  requiredgroups, conditions, **kwargs)
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   140
        if tostate is not None:
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            if hasattr(tostate, 'eid'):
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                tostate = tostate.eid
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   143
            self._cw.execute('SET T destination_state S '
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                             'WHERE S eid %(s)s, T eid %(t)s',
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                             {'t': tr.eid, 's': tostate})
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   146
        return tr
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   147
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   148
    def add_wftransition(self, name, subworkflow, fromstates, exitpoints=(),
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   149
                         requiredgroups=(), conditions=(), **kwargs):
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        """add a workflow transition to this workflow"""
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        tr = self._add_transition('WorkflowTransition', name, fromstates,
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                                  requiredgroups, conditions, **kwargs)
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        if hasattr(subworkflow, 'eid'):
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   154
            subworkflow = subworkflow.eid
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   155
        assert self._cw.execute('SET T subworkflow WF WHERE WF eid %(wf)s,T eid %(t)s',
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                                {'t': tr.eid, 'wf': subworkflow})
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        for fromstate, tostate in exitpoints:
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   158
            tr.add_exit_point(fromstate, tostate)
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   159
        return tr
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   160
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   161
    def replace_state(self, todelstate, replacement):
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   162
        """migration convenience method"""
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   163
        if not hasattr(todelstate, 'eid'):
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   164
            todelstate = self.state_by_name(todelstate)
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   165
        if not hasattr(replacement, 'eid'):
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   166
            replacement = self.state_by_name(replacement)
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   167
        execute = self._cw.execute
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   168
        execute('SET X in_state S WHERE S eid %(s)s', {'s': todelstate.eid})
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   169
        execute('SET X from_state NS WHERE X to_state OS, OS eid %(os)s, NS eid %(ns)s',
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                {'os': todelstate.eid, 'ns': replacement.eid})
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   171
        execute('SET X to_state NS WHERE X to_state OS, OS eid %(os)s, NS eid %(ns)s',
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   172
                {'os': todelstate.eid, 'ns': replacement.eid})
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diff changeset
   173
        todelstate.cw_delete()
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   174
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   175
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   176
class BaseTransition(AnyEntity):
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   177
    """customized class for abstract transition
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   178
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   179
    provides a specific may_be_fired method to check if the relation may be
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   180
    fired by the logged user
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    """
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   182
    __regid__ = 'BaseTransition'
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   183
    fetch_attrs, cw_fetch_order = fetch_config(['name', 'type'])
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   184
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diff changeset
   185
    def __init__(self, *args, **kwargs):
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diff changeset
   186
        if self.cw_etype == 'BaseTransition':
2988
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   187
            raise WorkflowException('should not be instantiated')
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   188
        super(BaseTransition, self).__init__(*args, **kwargs)
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diff changeset
   189
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   190
    @property
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   191
    def workflow(self):
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diff changeset
   192
        return self.transition_of[0]
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diff changeset
   193
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   194
    def has_input_state(self, state):
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   195
        if hasattr(state, 'eid'):
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   196
            state = state.eid
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   197
        return any(s for s in self.reverse_allowed_transition if s.eid == state)
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   198
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   199
    def may_be_fired(self, eid):
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diff changeset
   200
        """return true if the logged user may fire this transition
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   202
        `eid` is the eid of the object on which we may fire the transition
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        """
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   204
        user = self._cw.user
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        # check user is at least in one of the required groups if any
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   206
        groups = frozenset(g.name for g in self.require_group)
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   207
        if groups:
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   208
            matches = user.matching_groups(groups)
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   209
            if matches:
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                return matches
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   211
            if 'owners' in groups and user.owns(eid):
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   212
                return True
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   213
        # check one of the rql expression conditions matches if any
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   214
        if self.condition:
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diff changeset
   215
            for rqlexpr in self.condition:
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diff changeset
   216
                if rqlexpr.check_expression(self._cw, eid):
0
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   217
                    return True
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   218
        if self.condition or groups:
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   219
            return False
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   220
        return True
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   221
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    def set_permissions(self, requiredgroups=(), conditions=(), reset=True):
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        """set or add (if `reset` is False) groups and conditions for this
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        transition
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        """
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        if reset:
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            self._cw.execute('DELETE T require_group G WHERE T eid %(x)s',
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                             {'x': self.eid})
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            self._cw.execute('DELETE T condition R WHERE T eid %(x)s',
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                             {'x': self.eid})
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        for gname in requiredgroups:
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            rset = self._cw.execute('SET T require_group G '
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                                    'WHERE T eid %(x)s, G name %(gn)s',
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                                    {'x': self.eid, 'gn': gname})
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            assert rset, '%s is not a known group' % gname
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        if isinstance(conditions, basestring):
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            conditions = (conditions,)
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        for expr in conditions:
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            if isinstance(expr, basestring):
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                kwargs = {'expr': unicode(expr)}
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            else:
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                assert isinstance(expr, dict)
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                kwargs = expr
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            kwargs['x'] = self.eid
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            kwargs.setdefault('mainvars', u'X')
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            self._cw.execute('INSERT RQLExpression X: X exprtype "ERQLExpression", '
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                             'X expression %(expr)s, X mainvars %(mainvars)s, '
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                             'T condition X WHERE T eid %(x)s', kwargs)
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        # XXX clear caches?
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class Transition(BaseTransition):
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    """customized class for Transition entities"""
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    __regid__ = 'Transition'
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    def dc_long_title(self):
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        return '%s (%s)' % (self.name, self._cw._(self.name))
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    def destination(self, entity):
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        try:
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            return self.destination_state[0]
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        except IndexError:
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            return entity.cw_adapt_to('IWorkflowable').latest_trinfo().previous_state
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    def potential_destinations(self):
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        try:
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            yield self.destination_state[0]
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        except IndexError:
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            for incomingstate in self.reverse_allowed_transition:
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                for tr in incomingstate.reverse_destination_state:
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                    for previousstate in tr.reverse_allowed_transition:
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                        yield previousstate
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   273
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class WorkflowTransition(BaseTransition):
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    """customized class for WorkflowTransition entities"""
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    __regid__ = 'WorkflowTransition'
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    @property
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    def subwf(self):
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        return self.subworkflow[0]
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    def destination(self, entity):
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        return self.subwf.initial
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    def potential_destinations(self):
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        yield self.subwf.initial
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   288
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    def add_exit_point(self, fromstate, tostate):
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        if hasattr(fromstate, 'eid'):
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            fromstate = fromstate.eid
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        if tostate is None:
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   293
            self._cw.execute('INSERT SubWorkflowExitPoint X: T subworkflow_exit X, '
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   294
                             'X subworkflow_state FS WHERE T eid %(t)s, FS eid %(fs)s',
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                             {'t': self.eid, 'fs': fromstate})
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   296
        else:
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   297
            if hasattr(tostate, 'eid'):
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                tostate = tostate.eid
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   299
            self._cw.execute('INSERT SubWorkflowExitPoint X: T subworkflow_exit X, '
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   300
                             'X subworkflow_state FS, X destination_state TS '
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   301
                             'WHERE T eid %(t)s, FS eid %(fs)s, TS eid %(ts)s',
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   302
                             {'t': self.eid, 'fs': fromstate, 'ts': tostate})
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   303
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   304
    def get_exit_point(self, entity, stateeid):
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        """if state is an exit point, return its associated destination state"""
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   306
        if hasattr(stateeid, 'eid'):
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   307
            stateeid = stateeid.eid
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   308
        try:
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   309
            tostateeid = self.exit_points()[stateeid]
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   310
        except KeyError:
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   311
            return None
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   312
        if tostateeid is None:
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   313
            # go back to state from which we've entered the subworkflow
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   314
            return entity.cw_adapt_to('IWorkflowable').subworkflow_input_trinfo().previous_state
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   315
        return self._cw.entity_from_eid(tostateeid)
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   316
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    @cached
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   318
    def exit_points(self):
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   319
        result = {}
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   320
        for ep in self.subworkflow_exit:
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   321
            result[ep.subwf_state.eid] = ep.destination and ep.destination.eid
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   322
        return result
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   323
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   324
    def cw_clear_all_caches(self):
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   325
        super(WorkflowTransition, self).cw_clear_all_caches()
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   326
        clear_cache(self, 'exit_points')
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   327
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   328
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   329
class SubWorkflowExitPoint(AnyEntity):
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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   330
    """customized class for SubWorkflowExitPoint entities"""
3377
dd9d292b6a6d use __regid__ instead of id on appobject classes
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parents: 3038
diff changeset
   331
    __regid__ = 'SubWorkflowExitPoint'
2986
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   332
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   333
    @property
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   334
    def subwf_state(self):
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   335
        return self.subworkflow_state[0]
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   336
d8f2e53702be [wf] new methods to build wf w/ workflow transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2980
diff changeset
   337
    @property
d8f2e53702be [wf] new methods to build wf w/ workflow transition
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parents: 2980
diff changeset
   338
    def destination(self):
3628
440931181322 [wf engine] support for subwf exit point with no destination state: go back to state from which we entered into the subworkflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3621
diff changeset
   339
        return self.destination_state and self.destination_state[0] or None
2986
d8f2e53702be [wf] new methods to build wf w/ workflow transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2980
diff changeset
   340
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parents: 1154
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   341
0
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parents:
diff changeset
   342
class State(AnyEntity):
2920
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parents: 2917
diff changeset
   343
    """customized class for State entities"""
3377
dd9d292b6a6d use __regid__ instead of id on appobject classes
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parents: 3038
diff changeset
   344
    __regid__ = 'State'
7827
9bbf83f68bcc [entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7406
diff changeset
   345
    fetch_attrs, cw_fetch_order = fetch_config(['name'])
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   346
    rest_attr = 'eid'
1572
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parents: 1154
diff changeset
   347
8212
a045d3821990 [workflow view] Display a non-localized version of state/transition names (closes #1912537).
Damien Garaud <damien.garaud@logilab.fr>
parents: 7990
diff changeset
   348
    def dc_long_title(self):
a045d3821990 [workflow view] Display a non-localized version of state/transition names (closes #1912537).
Damien Garaud <damien.garaud@logilab.fr>
parents: 7990
diff changeset
   349
        return '%s (%s)' % (self.name, self._cw._(self.name))
a045d3821990 [workflow view] Display a non-localized version of state/transition names (closes #1912537).
Damien Garaud <damien.garaud@logilab.fr>
parents: 7990
diff changeset
   350
2975
fed52d317ba7 [wf] new .workflow property on states and transitions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2954
diff changeset
   351
    @property
fed52d317ba7 [wf] new .workflow property on states and transitions
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2954
diff changeset
   352
    def workflow(self):
3038
1261c3df0e5a [multi-sources] in ms config we don't have state_of (and probably others, but that's the one used until now...)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2991
diff changeset
   353
        # take care, may be missing in multi-sources configuration
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   354
        return self.state_of and self.state_of[0] or None
0
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   355
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parents: 1154
diff changeset
   356
0
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parents:
diff changeset
   357
class TrInfo(AnyEntity):
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parents:
diff changeset
   358
    """customized class for Transition information entities
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parents:
diff changeset
   359
    """
3377
dd9d292b6a6d use __regid__ instead of id on appobject classes
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   360
    __regid__ = 'TrInfo'
7827
9bbf83f68bcc [entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7406
diff changeset
   361
    fetch_attrs, cw_fetch_order = fetch_config(['creation_date', 'comment'],
9bbf83f68bcc [entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7406
diff changeset
   362
                                               pclass=None) # don't want modification_date
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   363
    @property
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Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   364
    def for_entity(self):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   365
        return self.wf_info_for[0]
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   366
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   367
    @property
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parents:
diff changeset
   368
    def previous_state(self):
2920
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   369
        return self.from_state[0]
1572
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sylvain.thenault@logilab.fr
parents: 1154
diff changeset
   370
0
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   371
    @property
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parents:
diff changeset
   372
    def new_state(self):
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   373
        return self.to_state[0]
b97547f5f1fa Showtime !
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents:
diff changeset
   374
2920
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Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   375
    @property
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   376
    def transition(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   377
        return self.by_transition and self.by_transition[0] or None
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   378
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   379
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   380
9256
697a8181ba30 remove 3.9 bw compat
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 8930
diff changeset
   381
class IWorkflowableAdapter(EntityAdapter):
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   382
    """base adapter providing workflow helper methods for workflowable entities.
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   383
    """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   384
    __regid__ = 'IWorkflowable'
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   385
    __select__ = relation_possible('in_state')
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   386
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   387
    @cached
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   388
    def cwetype_workflow(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   389
        """return the default workflow for entities of this type"""
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   390
        # XXX CWEType method
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   391
        wfrset = self._cw.execute('Any WF WHERE ET default_workflow WF, '
8900
010a59e12d89 use cw_etype instead of __regid__
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 8216
diff changeset
   392
                                  'ET name %(et)s', {'et': self.entity.cw_etype})
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   393
        if wfrset:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   394
            return wfrset.get_entity(0, 0)
8900
010a59e12d89 use cw_etype instead of __regid__
Pierre-Yves David <pierre-yves.david@logilab.fr>
parents: 8216
diff changeset
   395
        self.warning("can't find any workflow for %s", self.entity.cw_etype)
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   396
        return None
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   397
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   398
    @property
2978
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   399
    def main_workflow(self):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   400
        """return current workflow applied to this entity"""
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   401
        if self.entity.custom_workflow:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   402
            return self.entity.custom_workflow[0]
2946
957fd4b276e2 [wf] refactor current_workflow by extracting cwetype_workflow method
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2945
diff changeset
   403
        return self.cwetype_workflow()
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   404
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   405
    @property
2978
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   406
    def current_workflow(self):
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   407
        """return current workflow applied to this entity"""
2991
dab951c08896 cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2990
diff changeset
   408
        return self.current_state and self.current_state.workflow or self.main_workflow
2978
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   409
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   410
    @property
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   411
    def current_state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   412
        """return current state entity"""
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   413
        return self.entity.in_state and self.entity.in_state[0] or None
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   414
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   415
    @property
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   416
    def state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   417
        """return current state name"""
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   418
        try:
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   419
            return self.current_state.name
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   420
        except AttributeError:
6904
cf869016a823 [workflow] fix warning: we want to see the adapted entity, not the adapter
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5557
diff changeset
   421
            self.warning('entity %s has no state', self.entity)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   422
            return None
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   423
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   424
    @property
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   425
    def printable_state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   426
        """return current state name translated to context's language"""
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   427
        state = self.current_state
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   428
        if state:
3406
e343f37f7013 use self._cw instead of self.req
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3405
diff changeset
   429
            return self._cw._(state.name)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   430
        return u''
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   431
2947
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   432
    @property
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   433
    def workflow_history(self):
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   434
        """return the workflow history for this entity (eg ordered list of
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   435
        TrInfo entities)
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   436
        """
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   437
        return self.entity.reverse_wf_info_for
2947
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   438
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   439
    def latest_trinfo(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   440
        """return the latest transition information for this entity"""
3765
769dc0107f31 latst_trinfo : do not crash on absent wf history
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3757
diff changeset
   441
        try:
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   442
            return self.workflow_history[-1]
3765
769dc0107f31 latst_trinfo : do not crash on absent wf history
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3757
diff changeset
   443
        except IndexError:
769dc0107f31 latst_trinfo : do not crash on absent wf history
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3757
diff changeset
   444
            return None
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   445
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   446
    def possible_transitions(self, type='normal'):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   447
        """generates transition that MAY be fired for the given entity,
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   448
        expected to be in this state
3986
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3982
diff changeset
   449
        used only by the UI
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   450
        """
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   451
        if self.current_state is None or self.current_workflow is None:
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   452
            return
3406
e343f37f7013 use self._cw instead of self.req
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3405
diff changeset
   453
        rset = self._cw.execute(
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   454
            'Any T,TT, TN WHERE S allowed_transition T, S eid %(x)s, '
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   455
            'T type TT, T type %(type)s, '
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   456
            'T name TN, T transition_of WF, WF eid %(wfeid)s',
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   457
            {'x': self.current_state.eid, 'type': type,
5174
78438ad513ca #759035: Automate addition of eid cachekey in RQL analysis
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4835
diff changeset
   458
             'wfeid': self.current_workflow.eid})
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   459
        for tr in rset.entities():
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   460
            if tr.may_be_fired(self.entity.eid):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   461
                yield tr
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   462
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   463
    def subworkflow_input_trinfo(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   464
        """return the TrInfo which has be recorded when this entity went into
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   465
        the current sub-workflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   466
        """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   467
        if self.main_workflow.eid == self.current_workflow.eid:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   468
            return # doesn't make sense
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   469
        subwfentries = []
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   470
        for trinfo in self.workflow_history:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   471
            if (trinfo.transition and
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   472
                trinfo.previous_state.workflow.eid != trinfo.new_state.workflow.eid):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   473
                # entering or leaving a subworkflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   474
                if (subwfentries and
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   475
                    subwfentries[-1].new_state.workflow.eid == trinfo.previous_state.workflow.eid and
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   476
                    subwfentries[-1].previous_state.workflow.eid == trinfo.new_state.workflow.eid):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   477
                    # leave
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   478
                    del subwfentries[-1]
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   479
                else:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   480
                    # enter
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   481
                    subwfentries.append(trinfo)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   482
        if not subwfentries:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   483
            return None
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   484
        return subwfentries[-1]
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   485
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   486
    def subworkflow_input_transition(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   487
        """return the transition which has went through the current sub-workflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   488
        """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   489
        return getattr(self.subworkflow_input_trinfo(), 'transition', None)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   490
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   491
    def _add_trinfo(self, comment, commentformat, treid=None, tseid=None):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   492
        kwargs = {}
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   493
        if comment is not None:
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   494
            kwargs['comment'] = comment
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   495
            if commentformat is not None:
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   496
                kwargs['comment_format'] = commentformat
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   497
        kwargs['wf_info_for'] = self.entity
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   498
        if treid is not None:
4024
6a14cff373c3 more api update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4023
diff changeset
   499
            kwargs['by_transition'] = self._cw.entity_from_eid(treid)
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   500
        if tseid is not None:
4024
6a14cff373c3 more api update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4023
diff changeset
   501
            kwargs['to_state'] = self._cw.entity_from_eid(tseid)
3720
5376aaadd16b backport stable
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3675 3698
diff changeset
   502
        return self._cw.create_entity('TrInfo', **kwargs)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   503
7404
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   504
    def _get_transition(self, tr):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   505
        assert self.current_workflow
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   506
        if isinstance(tr, basestring):
3628
440931181322 [wf engine] support for subwf exit point with no destination state: go back to state from which we entered into the subworkflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3621
diff changeset
   507
            _tr = self.current_workflow.transition_by_name(tr)
3629
559cad62c786 backport stable branch
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3589 3628
diff changeset
   508
            assert _tr is not None, 'not a %s transition: %s' % (
559cad62c786 backport stable branch
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3589 3628
diff changeset
   509
                self.__regid__, tr)
3628
440931181322 [wf engine] support for subwf exit point with no destination state: go back to state from which we entered into the subworkflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3621
diff changeset
   510
            tr = _tr
7404
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   511
        return tr
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   512
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   513
    def fire_transition(self, tr, comment=None, commentformat=None):
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   514
        """change the entity's state by firing given transition (name or entity)
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   515
        in entity's workflow
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   516
        """
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   517
        tr = self._get_transition(tr)
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   518
        return self._add_trinfo(comment, commentformat, tr.eid)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   519
7404
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   520
    def fire_transition_if_possible(self, tr, comment=None, commentformat=None):
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   521
        """change the entity's state by firing given transition (name or entity)
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   522
        in entity's workflow if this transition is possible
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   523
        """
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   524
        tr = self._get_transition(tr)
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   525
        if any(tr_ for tr_ in self.possible_transitions()
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   526
               if tr_.eid == tr.eid):
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   527
            self.fire_transition(tr)
02a786d7ebce [workflow] new 'fire_transition_if_possible' method on IWorkflowable to fire a transition if it's possible
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7401
diff changeset
   528
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   529
    def change_state(self, statename, comment=None, commentformat=None, tr=None):
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   530
        """change the entity's state to the given state (name or entity) in
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   531
        entity's workflow. This method should only by used by manager to fix an
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   532
        entity's state when their is no matching transition, otherwise
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   533
        fire_transition should be used.
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   534
        """
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   535
        assert self.current_workflow
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   536
        if hasattr(statename, 'eid'):
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   537
            stateeid = statename.eid
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   538
        else:
7990
a673d1d9a738 [diet] drop pre 3.6 API compatibility (but attempt to keep data cmopatibility). Closes #2017916
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 7894
diff changeset
   539
            state = self.current_workflow.state_by_name(statename)
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   540
            if state is None:
3451
6b46d73823f5 [api] work in progress, use __regid__, cw_*, etc.
Adrien Di Mascio <Adrien.DiMascio@logilab.fr>
parents: 3406
diff changeset
   541
                raise WorkflowException('not a %s state: %s' % (self.__regid__,
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   542
                                                                statename))
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   543
            stateeid = state.eid
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   544
        # XXX try to find matching transition?
2989
dfb3506647e4 [wf] refactor change_state/fire_transition to share more code, change_state can also take an optional tr argument
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2988
diff changeset
   545
        return self._add_trinfo(comment, commentformat, tr and tr.eid, stateeid)
7401
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   546
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   547
    def set_initial_state(self, statename):
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   548
        """set a newly created entity's state to the given state (name or entity)
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   549
        in entity's workflow. This is useful if you don't want it to be the
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   550
        workflow's initial state.
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   551
        """
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   552
        assert self.current_workflow
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   553
        if hasattr(statename, 'eid'):
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   554
            stateeid = statename.eid
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   555
        else:
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   556
            state = self.current_workflow.state_by_name(statename)
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   557
            if state is None:
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   558
                raise WorkflowException('not a %s state: %s' % (self.__regid__,
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   559
                                                                statename))
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   560
            stateeid = state.eid
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   561
        self._cw.execute('SET X in_state S WHERE X eid %(x)s, S eid %(s)s',
fded980bbd65 [workflow] add method on IWorkflowable to set initial state of an entity (closes #1686357)
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 6904
diff changeset
   562
                         {'x': self.entity.eid, 's': stateeid})