162 lines
6.5 KiB
Python
162 lines
6.5 KiB
Python
# -*- coding: utf-8 -*-
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##############################################################################
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#
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# OpenERP, Open Source Management Solution
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# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
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#
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# This program is free software: you can redistribute it and/or modify
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# it under the terms of the GNU Affero General Public License as
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# published by the Free Software Foundation, either version 3 of the
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# License, or (at your option) any later version.
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#
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# This program is distributed in the hope that it will be useful,
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# but WITHOUT ANY WARRANTY; without even the implied warranty of
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# MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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# GNU Affero General Public License for more details.
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#
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# You should have received a copy of the GNU Affero General Public License
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# along with this program. If not, see <http://www.gnu.org/licenses/>.
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#
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##############################################################################
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import wkf_logs
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import workitem
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import instance
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import openerp.netsvc as netsvc
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import openerp.pooler as pooler
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class workflow_service(netsvc.Service):
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"""
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Sometimes you might want to fire a signal or re-evaluate the current state
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of a workflow using the service's API. You can access the workflow services
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using:
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>>> import netsvc
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>>> wf_service = netsvc.LocalService("workflow")
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"""
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def __init__(self, name='workflow'):
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netsvc.Service.__init__(self, name)
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self.wkf_on_create_cache={}
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def clear_cache(self, cr, uid):
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self.wkf_on_create_cache[cr.dbname]={}
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def trg_write(self, uid, res_type, res_id, cr):
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"""
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Reevaluates the specified workflow instance. Thus if any condition for
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a transition have been changed in the backend, then running ``trg_write``
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will move the workflow over that transition.
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:param res_type: the model name
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:param res_id: the model instance id the workflow belongs to
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:param cr: a database cursor
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"""
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ident = (uid,res_type,res_id)
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cr.execute('select id from wkf_instance where res_id=%s and res_type=%s and state=%s', (res_id or None,res_type or None, 'active'))
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for (id,) in cr.fetchall():
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instance.update(cr, id, ident)
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def trg_trigger(self, uid, res_type, res_id, cr):
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"""
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Activate a trigger.
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If a workflow instance is waiting for a trigger from another model, then this
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trigger can be activated if its conditions are met.
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:param res_type: the model name
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:param res_id: the model instance id the workflow belongs to
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:param cr: a database cursor
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"""
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cr.execute('select instance_id from wkf_triggers where res_id=%s and model=%s', (res_id,res_type))
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res = cr.fetchall()
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for (instance_id,) in res:
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cr.execute('select %s,res_type,res_id from wkf_instance where id=%s', (uid, instance_id,))
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ident = cr.fetchone()
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instance.update(cr, instance_id, ident)
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def trg_delete(self, uid, res_type, res_id, cr):
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"""
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Delete a workflow instance
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:param res_type: the model name
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:param res_id: the model instance id the workflow belongs to
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:param cr: a database cursor
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"""
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ident = (uid,res_type,res_id)
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instance.delete(cr, ident)
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def trg_create(self, uid, res_type, res_id, cr):
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"""
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Create a new workflow instance
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:param res_type: the model name
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:param res_id: the model instance id to own the created worfklow instance
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:param cr: a database cursor
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"""
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ident = (uid,res_type,res_id)
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self.wkf_on_create_cache.setdefault(cr.dbname, {})
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if res_type in self.wkf_on_create_cache[cr.dbname]:
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wkf_ids = self.wkf_on_create_cache[cr.dbname][res_type]
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else:
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cr.execute('select id from wkf where osv=%s and on_create=True', (res_type,))
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wkf_ids = cr.fetchall()
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self.wkf_on_create_cache[cr.dbname][res_type] = wkf_ids
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for (wkf_id,) in wkf_ids:
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instance.create(cr, ident, wkf_id)
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def trg_validate(self, uid, res_type, res_id, signal, cr):
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"""
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Fire a signal on a given workflow instance
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:param res_type: the model name
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:param res_id: the model instance id the workflow belongs to
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:signal: the signal name to be fired
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:param cr: a database cursor
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"""
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result = False
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ident = (uid,res_type,res_id)
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# ids of all active workflow instances for a corresponding resource (id, model_nam)
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cr.execute('select id from wkf_instance where res_id=%s and res_type=%s and state=%s', (res_id, res_type, 'active'))
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for (id,) in cr.fetchall():
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res2 = instance.validate(cr, id, ident, signal)
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result = result or res2
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return result
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def trg_redirect(self, uid, res_type, res_id, new_rid, cr):
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"""
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Re-bind a workflow instance to another instance of the same model.
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Make all workitems which are waiting for a (subflow) workflow instance
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for the old resource point to the (first active) workflow instance for
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the new resource.
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:param res_type: the model name
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:param res_id: the model instance id the workflow belongs to
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:param new_rid: the model instance id to own the worfklow instance
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:param cr: a database cursor
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"""
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# get ids of wkf instances for the old resource (res_id)
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#CHECKME: shouldn't we get only active instances?
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cr.execute('select id, wkf_id from wkf_instance where res_id=%s and res_type=%s', (res_id, res_type))
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for old_inst_id, wkf_id in cr.fetchall():
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# first active instance for new resource (new_rid), using same wkf
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cr.execute(
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'SELECT id '\
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'FROM wkf_instance '\
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'WHERE res_id=%s AND res_type=%s AND wkf_id=%s AND state=%s',
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(new_rid, res_type, wkf_id, 'active'))
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new_id = cr.fetchone()
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if new_id:
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# select all workitems which "wait" for the old instance
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cr.execute('select id from wkf_workitem where subflow_id=%s', (old_inst_id,))
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for (item_id,) in cr.fetchall():
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# redirect all those workitems to the wkf instance of the new resource
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cr.execute('update wkf_workitem set subflow_id=%s where id=%s', (new_id[0], item_id))
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workflow_service()
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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