265 lines
8.9 KiB
Python
265 lines
8.9 KiB
Python
# -*- encoding: 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>). All Rights Reserved
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# $Id$
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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 General Public License as published by
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# the Free Software Foundation, either version 3 of the License, or
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# (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 General Public License for more details.
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#
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# You should have received a copy of the GNU 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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#
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# OSV: Objects Services
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#
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import orm
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import netsvc
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import pooler
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import copy
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import sys
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from psycopg2 import IntegrityError
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from netsvc import Logger, LOG_ERROR
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from tools.misc import UpdateableDict
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module_list = []
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module_class_list = {}
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class_pool = {}
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class except_osv(Exception):
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def __init__(self, name, value, exc_type='warning'):
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self.name = name
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self.exc_type = exc_type
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self.value = value
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self.args = (exc_type, name)
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from tools.func import wraps
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class osv_pool(netsvc.Service):
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def check(f):
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@wraps(f)
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def wrapper(self, dbname, *args, **kwargs):
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try:
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if not pooler.get_pool(dbname)._ready:
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raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
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return f(self, dbname, *args, **kwargs)
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except orm.except_orm, inst:
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self.abortResponse(1, inst.name, 'warning', inst.value)
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except except_osv, inst:
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self.abortResponse(1, inst.name, inst.exc_type, inst.value)
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except IntegrityError, inst:
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for key in self._sql_error.keys():
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if key in inst[0]:
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self.abortResponse(1, 'Constraint Error', 'warning', self._sql_error[key])
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self.abortResponse(1, 'Integrity Error', 'warning', inst[0])
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except Exception, e:
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import traceback, sys
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tb_s = "".join(traceback.format_exception(*sys.exc_info()))
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logger = Logger()
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logger.notifyChannel('web-services', LOG_ERROR, tb_s)
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raise
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return wrapper
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def __init__(self):
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self._ready = False
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self.obj_pool = {}
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self.module_object_list = {}
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self.created = []
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self._sql_error = {}
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self._store_function = {}
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self._init = True
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self._init_parent = {}
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netsvc.Service.__init__(self, 'object_proxy', audience='')
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self.exportMethod(self.obj_list)
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self.exportMethod(self.exec_workflow)
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self.exportMethod(self.execute)
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def init_set(self, cr, mode):
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different = mode != self._init
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if different:
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if mode:
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self._init_parent = {}
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if not mode:
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for o in self._init_parent:
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self.get(o)._parent_store_compute(cr)
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self._init = mode
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self._ready = True
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return different
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def execute_cr(self, cr, uid, obj, method, *args, **kw):
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object = pooler.get_pool(cr.dbname).get(obj)
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if not object:
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raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
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return getattr(object, method)(cr, uid, *args, **kw)
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@check
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def execute(self, db, uid, obj, method, *args, **kw):
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db, pool = pooler.get_db_and_pool(db)
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cr = db.cursor()
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try:
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try:
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res = pool.execute_cr(cr, uid, obj, method, *args, **kw)
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cr.commit()
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except Exception:
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cr.rollback()
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raise
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finally:
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cr.close()
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return res
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def exec_workflow_cr(self, cr, uid, obj, method, *args):
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wf_service = netsvc.LocalService("workflow")
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return wf_service.trg_validate(uid, obj, args[0], method, cr)
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@check
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def exec_workflow(self, db, uid, obj, method, *args):
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cr = pooler.get_db(db).cursor()
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try:
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try:
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res = self.exec_workflow_cr(cr, uid, obj, method, *args)
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cr.commit()
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except Exception:
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cr.rollback()
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raise
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finally:
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cr.close()
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return res
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def obj_list(self):
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return self.obj_pool.keys()
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# adds a new object instance to the object pool.
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# if it already existed, the instance is replaced
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def add(self, name, obj_inst):
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if name in self.obj_pool:
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del self.obj_pool[name]
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self.obj_pool[name] = obj_inst
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module = str(obj_inst.__class__)[6:]
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module = module[:len(module)-1]
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module = module.split('.')[0][2:]
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self.module_object_list.setdefault(module, []).append(obj_inst)
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# Return None if object does not exist
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def get(self, name):
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obj = self.obj_pool.get(name, None)
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return obj
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#TODO: pass a list of modules to load
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def instanciate(self, module, cr):
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res = []
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class_list = module_class_list.get(module, [])
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for klass in class_list:
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res.append(klass.createInstance(self, module, cr))
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return res
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class osv_memory(orm.orm_memory):
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#__metaclass__ = inheritor
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def __new__(cls):
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module = str(cls)[6:]
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module = module[:len(module)-1]
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module = module.split('.')[0][2:]
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if not hasattr(cls, '_module'):
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cls._module = module
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module_class_list.setdefault(cls._module, []).append(cls)
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class_pool[cls._name] = cls
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if module not in module_list:
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module_list.append(cls._module)
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return None
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#
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# Goal: try to apply inheritancy at the instanciation level and
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# put objects in the pool var
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#
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def createInstance(cls, pool, module, cr):
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name = hasattr(cls, '_name') and cls._name or cls._inherit
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parent_name = hasattr(cls, '_inherit') and cls._inherit
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if parent_name:
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raise 'Inherit not supported in osv_memory object !'
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obj = object.__new__(cls)
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obj.__init__(pool, cr)
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return obj
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createInstance = classmethod(createInstance)
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def __init__(self, pool, cr):
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pool.add(self._name, self)
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self.pool = pool
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orm.orm_memory.__init__(self, cr)
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class osv(orm.orm):
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#__metaclass__ = inheritor
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def __new__(cls):
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module = str(cls)[6:]
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module = module[:len(module)-1]
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module = module.split('.')[0][2:]
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if not hasattr(cls, '_module'):
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cls._module = module
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module_class_list.setdefault(cls._module, []).append(cls)
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class_pool[cls._name] = cls
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if module not in module_list:
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module_list.append(cls._module)
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return None
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#
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# Goal: try to apply inheritancy at the instanciation level and
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# put objects in the pool var
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#
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def createInstance(cls, pool, module, cr):
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parent_name = hasattr(cls, '_inherit') and cls._inherit
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if parent_name:
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parent_class = pool.get(parent_name).__class__
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assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
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nattr = {}
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for s in ('_columns', '_defaults', '_inherits', '_constraints', '_sql_constraints'):
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new = copy.copy(getattr(pool.get(parent_name), s))
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if hasattr(new, 'update'):
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new.update(cls.__dict__.get(s, {}))
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else:
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if s=='_constraints':
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for c in cls.__dict__.get(s, []):
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exist = False
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for c2 in range(len(new)):
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if new[c2][2]==c[2]:
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new[c2] = c
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exist = True
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break
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if not exist:
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new.append(c)
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else:
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new.extend(cls.__dict__.get(s, []))
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nattr[s] = new
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name = hasattr(cls, '_name') and cls._name or cls._inherit
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cls = type(name, (cls, parent_class), nattr)
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obj = object.__new__(cls)
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obj.__init__(pool, cr)
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return obj
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createInstance = classmethod(createInstance)
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def __init__(self, pool, cr):
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pool.add(self._name, self)
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self.pool = pool
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orm.orm.__init__(self, cr)
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# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4:
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