entities/wfobjs.py
author Sylvain Thénault <sylvain.thenault@logilab.fr>
Thu, 22 Sep 2011 16:12:23 +0200
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parent 7406 e772a2c57b00
child 7894 ad0eeb0f7a8d
permissions -rw-r--r--
[entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758) of rql generation parts of the ORM now based on rql syntax tree. This allows more powerful and flexible sort control by giving them the syntax tree instead of manipulating string. Also: * prefix new methods by 'cw_' * fix cases that currently crash in 3.14 due to the refactoring
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# copyright 2003-2010 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 warnings import warn
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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 logilab.common.compat import any
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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.selectors import relation_possible
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from cubicweb.mixins import MI_REL_TRIGGERS
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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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   112
                         {'s': state.eid, 'wf': self.eid})
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   113
        if initial:
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   114
            assert not self.initial, "Initial state already defined as %s" % self.initial
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   115
            self._cw.execute('SET WF initial_state S '
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   116
                             'WHERE S eid %(s)s, WF eid %(wf)s',
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                             {'s': state.eid, 'wf': self.eid})
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   118
        return state
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diff changeset
   119
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   120
    def _add_transition(self, trtype, name, fromstates,
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   121
                        requiredgroups=(), conditions=(), **kwargs):
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   122
        tr = self._cw.create_entity(trtype, name=unicode(name), **kwargs)
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   123
        self._cw.execute('SET T transition_of WF '
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   124
                         'WHERE T eid %(t)s, WF eid %(wf)s',
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   125
                         {'t': tr.eid, 'wf': self.eid})
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parents: 2986
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   126
        assert fromstates, fromstates
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        if not isinstance(fromstates, (tuple, list)):
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   128
            fromstates = (fromstates,)
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        for state in fromstates:
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            if hasattr(state, 'eid'):
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   131
                state = state.eid
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   132
            self._cw.execute('SET S allowed_transition T '
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   133
                             'WHERE S eid %(s)s, T eid %(t)s',
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   134
                             {'s': state, 't': tr.eid})
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fd4e32f17211 deprecate Transition.set_transition_permissions in favor of set_permissions (after all we know we're on a transition entity)
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   135
        tr.set_permissions(requiredgroups, conditions, reset=False)
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   136
        return tr
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diff changeset
   137
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   138
    def add_transition(self, name, fromstates, tostate=None,
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   139
                       requiredgroups=(), conditions=(), **kwargs):
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   140
        """add a transition to this workflow from some state(s) to another"""
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   141
        tr = self._add_transition('Transition', name, fromstates,
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   142
                                  requiredgroups, conditions, **kwargs)
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   143
        if tostate is not None:
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   144
            if hasattr(tostate, 'eid'):
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   145
                tostate = tostate.eid
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parents: 3589 3628
diff changeset
   146
            self._cw.execute('SET T destination_state S '
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   147
                             'WHERE S eid %(s)s, T eid %(t)s',
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   148
                             {'t': tr.eid, 's': tostate})
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   149
        return tr
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   150
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diff changeset
   151
    def add_wftransition(self, name, subworkflow, fromstates, exitpoints=(),
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diff changeset
   152
                         requiredgroups=(), conditions=(), **kwargs):
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   153
        """add a workflow transition to this workflow"""
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diff changeset
   154
        tr = self._add_transition('WorkflowTransition', name, fromstates,
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diff changeset
   155
                                  requiredgroups, conditions, **kwargs)
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diff changeset
   156
        if hasattr(subworkflow, 'eid'):
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   157
            subworkflow = subworkflow.eid
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diff changeset
   158
        assert self._cw.execute('SET T subworkflow WF WHERE WF eid %(wf)s,T eid %(t)s',
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   159
                                {'t': tr.eid, 'wf': subworkflow})
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diff changeset
   160
        for fromstate, tostate in exitpoints:
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   161
            tr.add_exit_point(fromstate, tostate)
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diff changeset
   162
        return tr
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diff changeset
   163
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   164
    def replace_state(self, todelstate, replacement):
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   165
        """migration convenience method"""
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   166
        if not hasattr(todelstate, 'eid'):
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   167
            todelstate = self.state_by_name(todelstate)
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   168
        if not hasattr(replacement, 'eid'):
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diff changeset
   169
            replacement = self.state_by_name(replacement)
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13b0b96d7982 [repo] enhanced security handling: deprecates unsafe_execute, in favor of explicit read/write security control using the `enabled_security` context manager. Also code executed on the repository side is now unsafe by default.
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diff changeset
   170
        execute = self._cw.execute
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   171
        execute('SET X in_state S WHERE S eid %(s)s', {'s': todelstate.eid})
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   172
        execute('SET X from_state NS WHERE X to_state OS, OS eid %(os)s, NS eid %(ns)s',
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   173
                {'os': todelstate.eid, 'ns': replacement.eid})
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diff changeset
   174
        execute('SET X to_state NS WHERE X to_state OS, OS eid %(os)s, NS eid %(ns)s',
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diff changeset
   175
                {'os': todelstate.eid, 'ns': replacement.eid})
5557
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parents: 5556
diff changeset
   176
        todelstate.cw_delete()
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diff changeset
   177
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   178
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   179
class BaseTransition(AnyEntity):
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   180
    """customized class for abstract transition
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   181
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   182
    provides a specific may_be_fired method to check if the relation may be
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diff changeset
   183
    fired by the logged user
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    """
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diff changeset
   185
    __regid__ = 'BaseTransition'
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9bbf83f68bcc [entity] upgrade fetch_[unrelated_]order to benefit from changes introduced in 3.14 (closes #1942758)
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parents: 7406
diff changeset
   186
    fetch_attrs, cw_fetch_order = fetch_config(['name', 'type'])
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parents: 1154
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   187
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diff changeset
   188
    def __init__(self, *args, **kwargs):
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diff changeset
   189
        if self.__regid__ == 'BaseTransition':
2988
89d97d7c0508 [wf] use custom exception class
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parents: 2987
diff changeset
   190
            raise WorkflowException('should not be instantiated')
2954
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diff changeset
   191
        super(BaseTransition, self).__init__(*args, **kwargs)
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diff changeset
   192
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   193
    @property
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   194
    def workflow(self):
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diff changeset
   195
        return self.transition_of[0]
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diff changeset
   196
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   197
    def has_input_state(self, state):
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   198
        if hasattr(state, 'eid'):
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diff changeset
   199
            state = state.eid
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diff changeset
   200
        return any(s for s in self.reverse_allowed_transition if s.eid == state)
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diff changeset
   201
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   202
    def may_be_fired(self, eid):
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diff changeset
   203
        """return true if the logged user may fire this transition
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   204
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   205
        `eid` is the eid of the object on which we may fire the transition
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diff changeset
   206
        """
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diff changeset
   207
        user = self._cw.user
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   208
        # check user is at least in one of the required groups if any
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   209
        groups = frozenset(g.name for g in self.require_group)
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   210
        if groups:
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   211
            matches = user.matching_groups(groups)
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   212
            if matches:
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   213
                return matches
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   214
            if 'owners' in groups and user.owns(eid):
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diff changeset
   215
                return True
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   216
        # check one of the rql expression conditions matches if any
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   217
        if self.condition:
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   218
            for rqlexpr in self.condition:
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diff changeset
   219
                if rqlexpr.check_expression(self._cw, eid):
0
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                    return True
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        if self.condition or groups:
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            return False
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        return True
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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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    @deprecated('[3.6.1] use set_permission')
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    def set_transition_permissions(self, requiredgroups=(), conditions=(),
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                                   reset=True):
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        return self.set_permissions(requiredgroups, conditions, reset)
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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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   263
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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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   278
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   279
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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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   283
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    @property
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    def subwf(self):
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   286
        return self.subworkflow[0]
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   287
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    def destination(self, entity):
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   289
        return self.subwf.initial
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   290
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   291
    def potential_destinations(self):
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        yield self.subwf.initial
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   293
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    def add_exit_point(self, fromstate, tostate):
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        if hasattr(fromstate, 'eid'):
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   296
            fromstate = fromstate.eid
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   297
        if tostate is None:
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   298
            self._cw.execute('INSERT SubWorkflowExitPoint X: T subworkflow_exit X, '
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   299
                             '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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   301
        else:
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   302
            if hasattr(tostate, 'eid'):
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   303
                tostate = tostate.eid
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   304
            self._cw.execute('INSERT SubWorkflowExitPoint X: T subworkflow_exit X, '
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   305
                             'X subworkflow_state FS, X destination_state TS '
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   306
                             'WHERE T eid %(t)s, FS eid %(fs)s, TS eid %(ts)s',
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   307
                             {'t': self.eid, 'fs': fromstate, 'ts': tostate})
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diff changeset
   308
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diff changeset
   309
    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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   311
        if hasattr(stateeid, 'eid'):
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   312
            stateeid = stateeid.eid
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   313
        try:
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   314
            tostateeid = self.exit_points()[stateeid]
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diff changeset
   315
        except KeyError:
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   316
            return None
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   317
        if tostateeid is None:
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   318
            # go back to state from which we've entered the subworkflow
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   319
            return entity.cw_adapt_to('IWorkflowable').subworkflow_input_trinfo().previous_state
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   320
        return self._cw.entity_from_eid(tostateeid)
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diff changeset
   321
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   322
    @cached
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   323
    def exit_points(self):
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diff changeset
   324
        result = {}
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   325
        for ep in self.subworkflow_exit:
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   326
            result[ep.subwf_state.eid] = ep.destination and ep.destination.eid
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   327
        return result
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diff changeset
   328
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   329
    def cw_clear_all_caches(self):
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   330
        super(WorkflowTransition, self).cw_clear_all_caches()
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   331
        clear_cache(self, 'exit_points')
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   332
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   333
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   334
class SubWorkflowExitPoint(AnyEntity):
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   335
    """customized class for SubWorkflowExitPoint entities"""
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   336
    __regid__ = 'SubWorkflowExitPoint'
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   337
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   338
    @property
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   339
    def subwf_state(self):
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   340
        return self.subworkflow_state[0]
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   341
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   342
    @property
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   343
    def destination(self):
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440931181322 [wf engine] support for subwf exit point with no destination state: go back to state from which we entered into the subworkflow
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   344
        return self.destination_state and self.destination_state[0] or None
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diff changeset
   345
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   346
0
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   347
class State(AnyEntity):
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   348
    """customized class for State entities"""
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   349
    __regid__ = 'State'
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   350
    fetch_attrs, cw_fetch_order = fetch_config(['name'])
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   351
    rest_attr = 'eid'
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   352
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   353
    @property
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   354
    def workflow(self):
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1261c3df0e5a [multi-sources] in ms config we don't have state_of (and probably others, but that's the one used until now...)
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   355
        # take care, may be missing in multi-sources configuration
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   356
        return self.state_of and self.state_of[0] or None
0
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   357
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   358
0
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   359
class TrInfo(AnyEntity):
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    """customized class for Transition information entities
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   361
    """
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   362
    __regid__ = 'TrInfo'
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parents: 7406
diff changeset
   363
    fetch_attrs, cw_fetch_order = fetch_config(['creation_date', 'comment'],
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diff changeset
   364
                                               pclass=None) # don't want modification_date
0
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   365
    @property
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   366
    def for_entity(self):
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diff changeset
   367
        return self.wf_info_for[0]
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diff changeset
   368
0
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   369
    @property
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   370
    def previous_state(self):
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diff changeset
   371
        return self.from_state[0]
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   372
0
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   373
    @property
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   374
    def new_state(self):
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   375
        return self.to_state[0]
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diff changeset
   376
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diff changeset
   377
    @property
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   378
    def transition(self):
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diff changeset
   379
        return self.by_transition and self.by_transition[0] or None
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parents: 2917
diff changeset
   380
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diff changeset
   381
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diff changeset
   382
class WorkflowableMixIn(object):
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parents: 2917
diff changeset
   383
    """base mixin providing workflow helper methods for workflowable entities.
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parents: 2917
diff changeset
   384
    This mixin will be automatically set on class supporting the 'in_state'
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parents: 2917
diff changeset
   385
    relation (which implies supporting 'wf_info_for' as well)
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parents: 2917
diff changeset
   386
    """
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   387
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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diff changeset
   388
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   389
    @deprecated('[3.5] use printable_state')
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   390
    def displayable_state(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   391
        return self._cw._(self.state)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   392
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   393
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').main_workflow")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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diff changeset
   394
    def main_workflow(self):
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parents: 5426
diff changeset
   395
        return self.cw_adapt_to('IWorkflowable').main_workflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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diff changeset
   396
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   397
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').current_workflow")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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diff changeset
   398
    def current_workflow(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   399
        return self.cw_adapt_to('IWorkflowable').current_workflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   400
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   401
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').current_state")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   402
    def current_state(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   403
        return self.cw_adapt_to('IWorkflowable').current_state
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   404
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   405
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').state")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   406
    def state(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   407
        return self.cw_adapt_to('IWorkflowable').state
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   408
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   409
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').printable_state")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   410
    def printable_state(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   411
        return self.cw_adapt_to('IWorkflowable').printable_state
9ab2b4c74baf [entity] introduce a new 'adapters' registry
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parents: 5426
diff changeset
   412
    @property
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   413
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').workflow_history")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   414
    def workflow_history(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   415
        return self.cw_adapt_to('IWorkflowable').workflow_history
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   416
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   417
    @deprecated('[3.5] get transition from current workflow and use its may_be_fired method')
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   418
    def can_pass_transition(self, trname):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   419
        """return the Transition instance if the current user can fire the
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   420
        transition with the given name, else None
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   421
        """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   422
        tr = self.current_workflow and self.current_workflow.transition_by_name(trname)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   423
        if tr and tr.may_be_fired(self.eid):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   424
            return tr
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   425
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').cwetype_workflow()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   426
    def cwetype_workflow(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   427
        return self.cw_adapt_to('IWorkflowable').main_workflow()
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   428
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').latest_trinfo()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   429
    def latest_trinfo(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   430
        return self.cw_adapt_to('IWorkflowable').latest_trinfo()
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   431
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').possible_transitions()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   432
    def possible_transitions(self, type='normal'):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   433
        return self.cw_adapt_to('IWorkflowable').possible_transitions(type)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   434
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').fire_transition()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   435
    def fire_transition(self, tr, comment=None, commentformat=None):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   436
        return self.cw_adapt_to('IWorkflowable').fire_transition(tr, comment, commentformat)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   437
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').change_state()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   438
    def change_state(self, statename, comment=None, commentformat=None, tr=None):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   439
        return self.cw_adapt_to('IWorkflowable').change_state(statename, comment, commentformat, tr)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   440
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').subworkflow_input_trinfo()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   441
    def subworkflow_input_trinfo(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   442
        return self.cw_adapt_to('IWorkflowable').subworkflow_input_trinfo()
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   443
    @deprecated("[3.9] use entity.cw_adapt_to('IWorkflowable').subworkflow_input_transition()")
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   444
    def subworkflow_input_transition(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   445
        return self.cw_adapt_to('IWorkflowable').subworkflow_input_transition()
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   446
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   447
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   448
MI_REL_TRIGGERS[('in_state', 'subject')] = WorkflowableMixIn
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   449
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   450
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   451
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   452
class IWorkflowableAdapter(WorkflowableMixIn, EntityAdapter):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   453
    """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
   454
    """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   455
    __regid__ = 'IWorkflowable'
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   456
    __select__ = relation_possible('in_state')
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   457
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   458
    @cached
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   459
    def cwetype_workflow(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   460
        """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
   461
        # XXX CWEType method
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   462
        wfrset = self._cw.execute('Any WF WHERE ET default_workflow WF, '
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   463
                                  'ET name %(et)s', {'et': self.entity.__regid__})
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   464
        if wfrset:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   465
            return wfrset.get_entity(0, 0)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   466
        self.warning("can't find any workflow for %s", self.entity.__regid__)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   467
        return None
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   468
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   469
    @property
2978
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   470
    def main_workflow(self):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   471
        """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
   472
        if self.entity.custom_workflow:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   473
            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
   474
        return self.cwetype_workflow()
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   475
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   476
    @property
2978
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   477
    def current_workflow(self):
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   478
        """return current workflow applied to this entity"""
2991
dab951c08896 cleanup
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2990
diff changeset
   479
        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
   480
d8c5ad14ab8e [wf] distinguish main workflow / current workflow
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2976
diff changeset
   481
    @property
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   482
    def current_state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   483
        """return current state entity"""
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   484
        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
   485
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   486
    @property
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   487
    def state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   488
        """return current state name"""
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   489
        try:
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   490
            return self.current_state.name
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   491
        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
   492
            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
   493
            return None
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   494
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   495
    @property
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   496
    def printable_state(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   497
        """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
   498
        state = self.current_state
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   499
        if state:
3406
e343f37f7013 use self._cw instead of self.req
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3405
diff changeset
   500
            return self._cw._(state.name)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   501
        return u''
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   502
2947
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   503
    @property
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   504
    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
   505
        """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
   506
        TrInfo entities)
083593802120 [wf] new workflow_history property, nicer the reverse_wf_info_for...
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2946
diff changeset
   507
        """
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   508
        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
   509
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   510
    def latest_trinfo(self):
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   511
        """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
   512
        try:
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   513
            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
   514
        except IndexError:
769dc0107f31 latst_trinfo : do not crash on absent wf history
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3757
diff changeset
   515
            return None
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   516
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   517
    def possible_transitions(self, type='normal'):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   518
        """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
   519
        expected to be in this state
3986
cc29eddf51ad add postcommit_event on Operations
Aurelien Campeas <aurelien.campeas@logilab.fr>
parents: 3982
diff changeset
   520
        used only by the UI
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   521
        """
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   522
        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
   523
            return
3406
e343f37f7013 use self._cw instead of self.req
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3405
diff changeset
   524
        rset = self._cw.execute(
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   525
            '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
   526
            'T type TT, T type %(type)s, '
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   527
            '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
   528
            {'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
   529
             'wfeid': self.current_workflow.eid})
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   530
        for tr in rset.entities():
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   531
            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
   532
                yield tr
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   533
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   534
    def subworkflow_input_trinfo(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   535
        """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
   536
        the current sub-workflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   537
        """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   538
        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
   539
            return # doesn't make sense
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   540
        subwfentries = []
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   541
        for trinfo in self.workflow_history:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   542
            if (trinfo.transition and
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   543
                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
   544
                # entering or leaving a subworkflow
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   545
                if (subwfentries and
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   546
                    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
   547
                    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
   548
                    # leave
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   549
                    del subwfentries[-1]
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   550
                else:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   551
                    # enter
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   552
                    subwfentries.append(trinfo)
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   553
        if not subwfentries:
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   554
            return None
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   555
        return subwfentries[-1]
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   557
    def subworkflow_input_transition(self):
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   558
        """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
   559
        """
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   560
        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
   561
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
   562
    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
   563
        kwargs = {}
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   564
        if comment is not None:
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   565
            kwargs['comment'] = comment
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   566
            if commentformat is not None:
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   567
                kwargs['comment_format'] = commentformat
5556
9ab2b4c74baf [entity] introduce a new 'adapters' registry
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 5426
diff changeset
   568
        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
   569
        if treid is not None:
4024
6a14cff373c3 more api update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4023
diff changeset
   570
            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
   571
        if tseid is not None:
4024
6a14cff373c3 more api update
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 4023
diff changeset
   572
            kwargs['to_state'] = self._cw.entity_from_eid(tseid)
3720
5376aaadd16b backport stable
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3675 3698
diff changeset
   573
        return self._cw.create_entity('TrInfo', **kwargs)
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   574
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
   575
    def _get_transition(self, tr):
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   576
        assert self.current_workflow
3528
77a69de16709 support for automatic transition
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3038
diff changeset
   577
        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
   578
            _tr = self.current_workflow.transition_by_name(tr)
3629
559cad62c786 backport stable branch
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 3589 3628
diff changeset
   579
            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
   580
                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
   581
            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
   582
        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
   583
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
   584
    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
   585
        """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
   586
        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
   587
        """
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
   588
        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
   589
        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
   590
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
   591
    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
   592
        """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
   593
        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
   594
        """
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
   595
        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
   596
        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
   597
               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
   598
            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
   599
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
   600
    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
   601
        """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
   602
        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
   603
        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
   604
        fire_transition should be used.
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   605
        """
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   606
        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
   607
        if hasattr(statename, 'eid'):
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   608
            stateeid = statename.eid
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   609
        else:
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   610
            if not isinstance(statename, basestring):
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
   611
                warn('[3.5] give a state name', DeprecationWarning, stacklevel=2)
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   612
                state = self.current_workflow.state_by_eid(statename)
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   613
            else:
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   614
                state = self.current_workflow.state_by_name(statename)
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   615
            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
   616
                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
   617
                                                                statename))
2980
292387ed37f3 [wf] allow state entity as argument to change_state
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2978
diff changeset
   618
            stateeid = state.eid
2920
64322aa83a1d start a new workflow engine
Sylvain Thénault <sylvain.thenault@logilab.fr>
parents: 2917
diff changeset
   619
        # 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
   620
        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
   621
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
   622
    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
   623
        """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
   624
        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
   625
        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
   626
        """
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
   627
        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
   628
        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
   629
            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
   630
        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
   631
            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
   632
            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
   633
                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
   634
                                                                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
   635
            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
   636
        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
   637
                         {'x': self.entity.eid, 's': stateeid})