odoo/openerp/osv/osv.py

311 lines
13 KiB
Python

# -*- coding: utf-8 -*-
##############################################################################
#
# OpenERP, Open Source Management Solution
# Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
#
# This program is free software: you can redistribute it and/or modify
# it under the terms of the GNU Affero General Public License as
# published by the Free Software Foundation, either version 3 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 Affero General Public License for more details.
#
# You should have received a copy of the GNU Affero General Public License
# along with this program. If not, see <http://www.gnu.org/licenses/>.
#
##############################################################################
#.apidoc title: Objects Services (OSV)
import orm
import openerp
import openerp.netsvc as netsvc
import openerp.pooler as pooler
import openerp.sql_db as sql_db
import logging
from psycopg2 import IntegrityError, errorcodes
from openerp.tools.config import config
from openerp.tools.func import wraps
from openerp.tools.translate import translate
from openerp.osv.orm import MetaModel, Model
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 object_proxy(netsvc.Service):
def __init__(self):
self.logger = logging.getLogger('web-services')
netsvc.Service.__init__(self, 'object_proxy', audience='')
self.exportMethod(self.exec_workflow)
self.exportMethod(self.execute)
def check(f):
@wraps(f)
def wrapper(self, dbname, *args, **kwargs):
""" Wraps around OSV functions and normalises a few exceptions
"""
def tr(src, ttype):
# We try to do the same as the _(), but without the frame
# inspection, since we aready are wrapping an osv function
# trans_obj = self.get('ir.translation') cannot work yet :(
ctx = {}
if not kwargs:
if args and isinstance(args[-1], dict):
ctx = args[-1]
elif isinstance(kwargs, dict):
ctx = kwargs.get('context', {})
uid = 1
if args and isinstance(args[0], (long, int)):
uid = args[0]
lang = ctx and ctx.get('lang')
if not (lang or hasattr(src, '__call__')):
return src
# We open a *new* cursor here, one reason is that failed SQL
# queries (as in IntegrityError) will invalidate the current one.
cr = False
if hasattr(src, '__call__'):
# callable. We need to find the right parameters to call
# the orm._sql_message(self, cr, uid, ids, context) function,
# or we skip..
# our signature is f(osv_pool, dbname [,uid, obj, method, args])
try:
if args and len(args) > 1:
obj = self.get(args[1])
if len(args) > 3 and isinstance(args[3], (long, int, list)):
ids = args[3]
else:
ids = []
cr = sql_db.db_connect(dbname).cursor()
return src(obj, cr, uid, ids, context=(ctx or {}))
except Exception:
pass
finally:
if cr: cr.close()
return False # so that the original SQL error will
# be returned, it is the best we have.
try:
cr = sql_db.db_connect(dbname).cursor()
res = translate(cr, name=False, source_type=ttype,
lang=lang, source=src)
if res:
return res
else:
return src
finally:
if cr: cr.close()
def _(src):
return tr(src, 'code')
try:
if pooler.get_pool(dbname)._init:
raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
return f(self, dbname, *args, **kwargs)
except orm.except_orm, inst:
if inst.name == 'AccessError':
self.logger.debug("AccessError", exc_info=True)
self.abortResponse(1, inst.name, 'warning', inst.value)
except except_osv, inst:
self.abortResponse(1, inst.name, inst.exc_type, inst.value)
except IntegrityError, inst:
osv_pool = pooler.get_pool(dbname)
for key in osv_pool._sql_error.keys():
if key in inst[0]:
self.abortResponse(1, _('Constraint Error'), 'warning',
tr(osv_pool._sql_error[key], 'sql_constraint') or inst[0])
if inst.pgcode in (errorcodes.NOT_NULL_VIOLATION, errorcodes.FOREIGN_KEY_VIOLATION, errorcodes.RESTRICT_VIOLATION):
msg = _('The operation cannot be completed, probably due to the following:\n- deletion: you may be trying to delete a record while other records still reference it\n- creation/update: a mandatory field is not correctly set')
self.logger.debug("IntegrityError", exc_info=True)
try:
errortxt = inst.pgerror.replace('«','"').replace('»','"')
if '"public".' in errortxt:
context = errortxt.split('"public".')[1]
model_name = table = context.split('"')[1]
else:
last_quote_end = errortxt.rfind('"')
last_quote_begin = errortxt.rfind('"', 0, last_quote_end)
model_name = table = errortxt[last_quote_begin+1:last_quote_end].strip()
model = table.replace("_",".")
model_obj = osv_pool.get(model)
if model_obj:
model_name = model_obj._description or model_obj._name
msg += _('\n\n[object with reference: %s - %s]') % (model_name, model)
except Exception:
pass
self.abortResponse(1, _('Integrity Error'), 'warning', msg)
else:
self.abortResponse(1, _('Integrity Error'), 'warning', inst[0])
except Exception:
self.logger.exception("Uncaught exception")
raise
return wrapper
def execute_cr(self, cr, uid, obj, method, *args, **kw):
object = pooler.get_pool(cr.dbname).get(obj)
if not object:
raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
return getattr(object, method)(cr, uid, *args, **kw)
@check
def execute(self, db, uid, obj, method, *args, **kw):
cr = pooler.get_db(db).cursor()
try:
try:
if method.startswith('_'):
raise except_osv('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
res = self.execute_cr(cr, uid, obj, method, *args, **kw)
if res is None:
self.logger.warning('The method %s of the object %s can not return `None` !', method, obj)
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)
@check
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 Exception:
cr.rollback()
raise
finally:
cr.close()
return res
class osv_memory(Model):
""" Deprecated class. """
__metaclass__ = MetaModel
_register = False # Set to false if the model shouldn't be automatically discovered.
_transient = True
_max_count = None
_max_hours = None
_check_time = 20
def __init__(self, pool, cr):
super(osv_memory, self).__init__(pool, cr)
self.check_id = 0
self._max_count = config.get('osv_memory_count_limit')
self._max_hours = config.get('osv_memory_age_limit')
cr.execute('delete from wkf_instance where res_type=%s', (self._name,))
def _clean_transient_rows_older_than(self, cr, seconds):
if not self._log_access:
self.logger = logging.getLogger('orm').warning(
"Transient model without write_date: %s" % (self._name,))
return
cr.execute("SELECT id FROM " + self._table + " WHERE"
" COALESCE(write_date, create_date, now())::timestamp <"
" (now() - interval %s)", ("%s seconds" % seconds,))
ids = [x[0] for x in cr.fetchall()]
self.unlink(cr, openerp.SUPERUSER, ids)
def _clean_old_transient_rows(self, cr, count):
if not self._log_access:
self.logger = logging.getLogger('orm').warning(
"Transient model without write_date: %s" % (self._name,))
return
cr.execute(
"SELECT id, COALESCE(write_date, create_date, now())::timestamp"
" AS t FROM " + self._table +
" ORDER BY t LIMIT %s", (count,))
ids = [x[0] for x in cr.fetchall()]
self.unlink(cr, openerp.SUPERUSER, ids)
def vacuum(self, cr, uid, force=False):
""" Run the vacuum cleaner, i.e. unlink old records from the
virtual osv_memory tables if the "max count" or "max age" conditions are enabled
and have been reached. This method can be called very often (e.g. everytime a record
is created), but will only actually trigger the cleanup process once out of
"_check_time" times (by default once out of 20 calls)."""
self.check_id += 1
if (not force) and (self.check_id % self._check_time):
self.check_id = 0
return True
tounlink = []
# Age-based expiration
if self._max_hours:
self._clean_transient_rows_older_than(cr, self._max_hours * 60 * 60)
# Count-based expiration
if self._max_count:
self._clean_old_transient_rows(cr, self._max_count)
return True
def check_access_rule(self, cr, uid, ids, operation, context=None):
# No access rules for osv_memory
if self._log_access and uid != openerp.SUPERUSER:
cr.execute("SELECT distinct create_uid FROM " + self._table + " WHERE"
" id in ", (tuple(ids),))
uids = [x[0] for x in cr.fetchall()]
if len(uids) != 1 or uids[0] != uid:
raise orm.except_orm(_('AccessError'), '%s access is '
'restricted to your own records for osv_memory objects '
'(except for the super-user).' % mode.capitalize())
def create(self, cr, uid, vals, context=None):
self.vacuum(cr, uid)
return super(osv_memory, self).create(cr, uid, vals, context)
def unlink(self, cr, uid, ids, context=None):
super(osv_memory, self).unlink(cr, uid, ids, context)
if isinstance(ids, (int, long)):
ids = [ids]
if ids:
cr.execute('delete from wkf_instance where res_type=%s and res_id IN %s', (self._name, tuple(ids)))
return True
def _search(self, cr, uid, domain, offset=0, limit=None, order=None, context=None, count=False, access_rights_uid=None):
# Restrict acces to the current user, except for the super-user.
if self._log_access and uid != openerp.SUPERUSER:
domain = expression.expression_and(('create_uid', '=', uid), domain)
# TODO unclear: shoudl access_rights_uid be set to None (effectively ignoring it) or used instead of uid?
return self._search(cr, uid, domain, offset, limit, order, context, count, access_rights_uid)
class osv(Model):
""" Deprecated class. """
__metaclass__ = MetaModel
_register = False # Set to false if the model shouldn't be automatically discovered.
def start_object_proxy():
object_proxy()
# vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: