############################################################################## # # Copyright (c) 2004-2008 Tiny SPRL (http://tiny.be) All Rights Reserved. # # $Id$ # # WARNING: This program as such is intended to be used by professional # programmers who take the whole responsability of assessing all potential # consequences resulting from its eventual inadequacies and bugs # End users who are looking for a ready-to-use solution with commercial # garantees and support are strongly adviced to contract a Free Software # Service Company # # This program is Free Software; you can redistribute it and/or # modify it under the terms of the GNU General Public License # as published by the Free Software Foundation; either version 2 # of the License, or (at your option) any later version. # # This program is distributed in the hope that it will be useful, # but WITHOUT ANY WARRANTY; without even the implied warranty of # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the # GNU General Public License for more details. # # You should have received a copy of the GNU General Public License # along with this program; if not, write to the Free Software # Foundation, Inc., 59 Temple Place - Suite 330, Boston, MA 02111-1307, USA. ############################################################################### # # OSV: Objects Services # import orm import netsvc import pooler import copy import sys import psycopg from netsvc import Logger, LOG_ERROR from tools.misc import UpdateableDict module_list = [] module_class_list = {} class_pool = {} class except_osv(Exception): def __init__(self, name, value, exc_type='warning'): self.name = name self.exc_type = exc_type self.value = value self.args = (exc_type,name) class osv_pool(netsvc.Service): def __init__(self): self.obj_pool = {} self.module_object_list = {} self.created = [] self._sql_error = {} self._store_function = {} netsvc.Service.__init__(self, 'object_proxy', audience='') self.joinGroup('web-services') self.exportMethod(self.exportedMethods) self.exportMethod(self.obj_list) self.exportMethod(self.exec_workflow) self.exportMethod(self.execute) self.exportMethod(self.execute_cr) def execute_cr(self, cr, uid, obj, method, *args, **kw): try: object = pooler.get_pool(cr.dbname).get(obj) if not object: self.abortResponse(1, 'Object Error', 'warning', 'Object %s doesn\'t exist' % str(obj)) return getattr(object,method)(cr, uid, *args, **kw) except orm.except_orm, inst: self.abortResponse(1, inst.name, 'warning', inst.value) except except_osv, inst: self.abortResponse(1, inst.name, inst.exc_type, inst.value) except psycopg.IntegrityError, inst: for key in self._sql_error.keys(): if key in inst[0]: self.abortResponse(1, 'Constraint Error', 'warning', self._sql_error[key]) self.abortResponse(1, 'Integrity Error', 'warning', inst[0]) except Exception, e: import traceback tb_s = reduce(lambda x, y: x+y, traceback.format_exception( sys.exc_type, sys.exc_value, sys.exc_traceback)) logger = Logger() logger.notifyChannel("web-services", LOG_ERROR, 'Exception in call: ' + tb_s) raise def execute(self, db, uid, obj, method, *args, **kw): db, pool = pooler.get_db_and_pool(db) cr = db.cursor() try: try: res = pool.execute_cr(cr, uid, obj, method, *args, **kw) cr.commit() except Exception: cr.rollback() raise finally: cr.close() return res def exec_workflow_cr(self, cr, uid, obj, method, *args): wf_service = netsvc.LocalService("workflow") return wf_service.trg_validate(uid, obj, args[0], method, cr) def exec_workflow(self, db, uid, obj, method, *args): cr = pooler.get_db(db).cursor() try: try: res = self.exec_workflow_cr(cr, uid, obj, method, *args) cr.commit() except orm.except_orm, inst: cr.rollback() self.abortResponse(1, inst.name, 'warning', inst.value) except except_osv, inst: cr.rollback() self.abortResponse(1, inst.name, inst[0], inst.value) finally: cr.close() return res def obj_list(self): return self.obj_pool.keys() # adds a new object instance to the object pool. # if it already existed, the instance is replaced def add(self, name, obj_inst): if self.obj_pool.has_key(name): del self.obj_pool[name] self.obj_pool[name] = obj_inst module = str(obj_inst.__class__)[6:] module = module[:len(module)-1] module = module.split('.')[0][2:] self.module_object_list.setdefault(module, []).append(obj_inst) def get(self, name): obj = self.obj_pool.get(name, None) # We cannot uncomment this line because it breaks initialisation since objects do not initialize # in the correct order and the ORM doesnt support correctly when some objets do not exist yet # assert obj, "object %s does not exist !" % name return obj #TODO: pass a list of modules to load def instanciate(self, module, cr): # print "module list:", module_list # for module in module_list: res = [] class_list = module_class_list.get(module, []) # if module not in self.module_object_list: # print "%s class_list:" % module, class_list for klass in class_list: res.append(klass.createInstance(self, module, cr)) return res # else: # print "skipping module", module #pooler.get_pool(cr.dbname) = osv_pool() class osv_memory(orm.orm_memory): #__metaclass__ = inheritor def __new__(cls): module = str(cls)[6:] module = module[:len(module)-1] module = module.split('.')[0][2:] if not hasattr(cls, '_module'): cls._module = module module_class_list.setdefault(cls._module, []).append(cls) class_pool[cls._name] = cls if module not in module_list: module_list.append(cls._module) return None # # Goal: try to apply inheritancy at the instanciation level and # put objects in the pool var # def createInstance(cls, pool, module, cr): name = hasattr(cls,'_name') and cls._name or cls._inherit parent_name = hasattr(cls, '_inherit') and cls._inherit if parent_name: print 'Inherit not supported in osv_memory object !' obj = object.__new__(cls) obj.__init__(pool, cr) return obj createInstance = classmethod(createInstance) def __init__(self, pool, cr): pool.add(self._name, self) self.pool = pool orm.orm_memory.__init__(self, cr) class osv(orm.orm): #__metaclass__ = inheritor def __new__(cls): module = str(cls)[6:] module = module[:len(module)-1] module = module.split('.')[0][2:] if not hasattr(cls, '_module'): cls._module = module module_class_list.setdefault(cls._module, []).append(cls) class_pool[cls._name] = cls if module not in module_list: module_list.append(cls._module) return None # # Goal: try to apply inheritancy at the instanciation level and # put objects in the pool var # def createInstance(cls, pool, module, cr): parent_name = hasattr(cls, '_inherit') and cls._inherit if parent_name: parent_class = pool.get(parent_name).__class__ assert parent_class, "parent class %s does not exist !" % parent_name nattr = {} for s in ('_columns', '_defaults', '_inherits', '_constraints', '_sql_constraints'): new = copy.copy(getattr(pool.get(parent_name), s)) if hasattr(new, 'update'): new.update(cls.__dict__.get(s, {})) else: new.extend(cls.__dict__.get(s, [])) nattr[s] = new name = hasattr(cls,'_name') and cls._name or cls._inherit cls = type(name, (cls, parent_class), nattr) obj = object.__new__(cls) obj.__init__(pool, cr) return obj createInstance = classmethod(createInstance) def __init__(self, pool, cr): pool.add(self._name, self) self.pool = pool orm.orm.__init__(self, cr) class Cacheable(object): _cache = UpdateableDict() def add(self, key, value): self._cache[key] = value def invalidate(self, key): del self._cache[key] def get(self, key): try: w = self._cache[key] return w except KeyError: return None def clear(self): self._cache.clear() self._items = [] def filter_dict(d, fields): res = {} for f in fields + ['id']: if f in d: res[f] = d[f] return res class cacheable_osv(osv, Cacheable): _relevant = ['lang'] def __init__(self): super(cacheable_osv, self).__init__() def read(self, cr, user, ids, fields=None, context=None, load='_classic_read'): if not fields: fields=[] if not context: context={} fields = fields or self._columns.keys() ctx = [context.get(x, False) for x in self._relevant] result, tofetch = [], [] for id in ids: res = self.get(self._name, id, ctx) if not res: tofetch.append(id) else: result.append(filter_dict(res, fields)) # gen the list of "local" (ie not inherited) fields which are classic or many2one nfields = filter(lambda x: x[1]._classic_write, self._columns.items()) # gen the list of inherited fields inherits = map(lambda x: (x[0], x[1][2]), self._inherit_fields.items()) # complete the field list with the inherited fields which are classic or many2one nfields += filter(lambda x: x[1]._classic_write, inherits) nfields = [x[0] for x in nfields] res = super(cacheable_osv, self).read(cr, user, tofetch, nfields, context, load) for r in res: self.add((self._name, r['id'], ctx), r) result.append(filter_dict(r, fields)) # Appel de fonction si necessaire tofetch = [] for f in fields: if f not in nfields: tofetch.append(f) for f in tofetch: fvals = self._columns[f].get(cr, self, ids, f, user, context=context) for r in result: r[f] = fvals[r['id']] # TODO: tri par self._order !! return result def invalidate(self, key): del self._cache[key[0]][key[1]] def write(self, cr, user, ids, values, context=None): if not context: context={} for id in ids: self.invalidate((self._name, id)) return super(cacheable_osv, self).write(cr, user, ids, values, context) def unlink(self, cr, user, ids): self.clear() return super(cacheable_osv, self).unlink(cr, user, ids) #cacheable_osv = osv # vim:noexpandtab: #class FakePool(object): # def __init__(self, module): # self.preferred_module = module # def get(self, name): # localpool = module_objects_dict.get(self.preferred_module, {'dict': {}})['dict'] # if name in localpool: # obj = localpool[name] # else: # obj = pooler.get_pool(cr.dbname).get(name) # return obj # fake_pool = self # class fake_class(obj.__class__): # def __init__(self): # super(fake_class, self).__init__() # self.pool = fake_pool # return fake_class()