1 # -*- coding: utf-8 -*-
2 ##############################################################################
4 # OpenERP, Open Source Management Solution
5 # Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>).
7 # This program is free software: you can redistribute it and/or modify
8 # it under the terms of the GNU Affero General Public License as
9 # published by the Free Software Foundation, either version 3 of the
10 # License, or (at your option) any later version.
12 # This program is distributed in the hope that it will be useful,
13 # but WITHOUT ANY WARRANTY; without even the implied warranty of
14 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
15 # GNU Affero General Public License for more details.
17 # You should have received a copy of the GNU Affero General Public License
18 # along with this program. If not, see <http://www.gnu.org/licenses/>.
20 ##############################################################################
23 # OSV: Objects Services
31 from psycopg2 import IntegrityError, errorcodes
32 from tools.func import wraps
33 from tools.translate import translate
36 module_class_list = {}
39 class except_osv(Exception):
40 def __init__(self, name, value, exc_type='warning'):
42 self.exc_type = exc_type
44 self.args = (exc_type, name)
47 class object_proxy(netsvc.Service):
49 self.logger = logging.getLogger('web-services')
50 netsvc.Service.__init__(self, 'object_proxy', audience='')
51 self.exportMethod(self.exec_workflow)
52 self.exportMethod(self.execute)
56 def wrapper(self, dbname, *args, **kwargs):
57 """ Wraps around OSV functions and normalises a few exceptions
61 # We try to do the same as the _(), but without the frame
62 # inspection, since we aready are wrapping an osv function
63 # trans_obj = self.get('ir.translation') cannot work yet :(
66 if args and isinstance(args[-1], dict):
68 elif isinstance(kwargs, dict):
69 ctx = kwargs.get('context', {})
72 if args and isinstance(args[0], (long, int)):
75 lang = ctx and ctx.get('lang')
76 if not (lang or hasattr(src, '__call__')):
79 # We open a *new* cursor here, one reason is that failed SQL
80 # queries (as in IntegrityError) will invalidate the current one.
83 if hasattr(src, '__call__'):
84 # callable. We need to find the right parameters to call
85 # the orm._sql_message(self, cr, uid, ids, context) function,
87 # our signature is f(osv_pool, dbname [,uid, obj, method, args])
89 if args and len(args) > 1:
90 obj = self.get(args[1])
91 if len(args) > 3 and isinstance(args[3], (long, int, list)):
95 cr = pooler.get_db_only(dbname).cursor()
96 return src(obj, cr, uid, ids, context=(ctx or {}))
102 return False # so that the original SQL error will
103 # be returned, it is the best we have.
106 cr = pooler.get_db_only(dbname).cursor()
107 res = translate(cr, name=False, source_type=ttype,
108 lang=lang, source=src)
117 return tr(src, 'code')
120 if not pooler.get_pool(dbname)._ready:
121 raise except_osv('Database not ready', 'Currently, this database is not fully loaded and can not be used.')
122 return f(self, dbname, *args, **kwargs)
123 except orm.except_orm, inst:
124 if inst.name == 'AccessError':
125 self.logger.debug("AccessError", exc_info=True)
126 self.abortResponse(1, inst.name, 'warning', inst.value)
127 except except_osv, inst:
128 self.abortResponse(1, inst.name, inst.exc_type, inst.value)
129 except IntegrityError, inst:
130 osv_pool = pooler.get_pool(dbname)
131 for key in osv_pool._sql_error.keys():
133 self.abortResponse(1, _('Constraint Error'), 'warning',
134 tr(osv_pool._sql_error[key], 'sql_constraint') or inst[0])
135 if inst.pgcode in (errorcodes.NOT_NULL_VIOLATION, errorcodes.FOREIGN_KEY_VIOLATION, errorcodes.RESTRICT_VIOLATION):
136 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')
137 self.logger.debug("IntegrityError", exc_info=True)
139 errortxt = inst.pgerror.replace('«','"').replace('»','"')
140 if '"public".' in errortxt:
141 context = errortxt.split('"public".')[1]
142 model_name = table = context.split('"')[1]
144 last_quote_end = errortxt.rfind('"')
145 last_quote_begin = errortxt.rfind('"', 0, last_quote_end)
146 model_name = table = errortxt[last_quote_begin+1:last_quote_end].strip()
147 model = table.replace("_",".")
148 model_obj = osv_pool.get(model)
150 model_name = model_obj._description or model_obj._name
151 msg += _('\n\n[object with reference: %s - %s]') % (model_name, model)
154 self.abortResponse(1, _('Integrity Error'), 'warning', msg)
156 self.abortResponse(1, _('Integrity Error'), 'warning', inst[0])
158 self.logger.exception("Uncaught exception")
163 def execute_cr(self, cr, uid, obj, method, *args, **kw):
164 object = pooler.get_pool(cr.dbname).get(obj)
166 raise except_osv('Object Error', 'Object %s doesn\'t exist' % str(obj))
167 return getattr(object, method)(cr, uid, *args, **kw)
170 def execute(self, db, uid, obj, method, *args, **kw):
171 cr = pooler.get_db(db).cursor()
174 if method.startswith('_'):
175 raise except_osv('Access Denied', 'Private methods (such as %s) cannot be called remotely.' % (method,))
176 res = self.execute_cr(cr, uid, obj, method, *args, **kw)
178 self.logger.warning('The method %s of the object %s can not return `None` !', method, obj)
187 def exec_workflow_cr(self, cr, uid, obj, method, *args):
188 wf_service = netsvc.LocalService("workflow")
189 return wf_service.trg_validate(uid, obj, args[0], method, cr)
192 def exec_workflow(self, db, uid, obj, method, *args):
193 cr = pooler.get_db(db).cursor()
196 res = self.exec_workflow_cr(cr, uid, obj, method, *args)
207 class osv_pool(object):
211 self.module_object_list = {}
214 self._store_function = {}
216 self._init_parent = {}
217 self.logger = logging.getLogger("pool")
219 def init_set(self, cr, mode):
220 different = mode != self._init
223 self._init_parent = {}
225 for o in self._init_parent:
226 self.get(o)._parent_store_compute(cr)
234 return self.obj_pool.keys()
236 # adds a new object instance to the object pool.
237 # if it already existed, the instance is replaced
238 def add(self, name, obj_inst):
239 if name in self.obj_pool:
240 del self.obj_pool[name]
241 self.obj_pool[name] = obj_inst
243 module = str(obj_inst.__class__)[6:]
244 module = module[:len(module)-1]
245 module = module.split('.')[0][2:]
246 self.module_object_list.setdefault(module, []).append(obj_inst)
248 # Return None if object does not exist
250 obj = self.obj_pool.get(name, None)
253 #TODO: pass a list of modules to load
254 def instanciate(self, module, cr):
256 class_list = module_class_list.get(module, [])
257 for klass in class_list:
258 res.append(klass.createInstance(self, module, cr))
261 class osv_base(object):
262 def __init__(self, pool, cr):
263 pool.add(self._name, self)
265 super(osv_base, self).__init__(cr)
268 module = str(cls)[6:]
269 module = module[:len(module)-1]
270 module = module.split('.')[0][2:]
271 if not hasattr(cls, '_module'):
273 module_class_list.setdefault(cls._module, []).append(cls)
274 class_pool[cls._name] = cls
275 if module not in module_list:
276 module_list.append(cls._module)
279 class osv_memory(osv_base, orm.orm_memory):
281 # Goal: try to apply inheritancy at the instanciation level and
282 # put objects in the pool var
284 def createInstance(cls, pool, module, cr):
285 parent_names = getattr(cls, '_inherit', None)
287 if isinstance(parent_names, (str, unicode)):
288 name = cls._name or parent_names
289 parent_names = [parent_names]
293 raise TypeError('_name is mandatory in case of multiple inheritance')
295 for parent_name in ((type(parent_names)==list) and parent_names or [parent_names]):
296 parent_class = pool.get(parent_name).__class__
297 assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
299 for s in ('_columns', '_defaults'):
300 new = copy.copy(getattr(pool.get(parent_name), s))
302 # Don't _inherit custom fields.
306 # Duplicate float fields because they have a .digits
307 # cache (which must be per-pool, not server-wide).
309 if new[c]._type == 'float':
310 new[c] = copy.copy(new[c])
311 if hasattr(new, 'update'):
312 new.update(cls.__dict__.get(s, {}))
314 new.extend(cls.__dict__.get(s, []))
316 cls = type(name, (cls, parent_class), nattr)
318 # Duplicate float fields because they have a .digits
319 # cache (which must be per-pool, not server-wide).
320 for field_name, field in cls._columns.items():
321 if field._type == 'float':
322 cls._columns[field_name] = copy.copy(field)
324 obj = object.__new__(cls)
325 obj.__init__(pool, cr)
327 createInstance = classmethod(createInstance)
329 class osv(osv_base, orm.orm):
331 # Goal: try to apply inheritancy at the instanciation level and
332 # put objects in the pool var
334 def createInstance(cls, pool, module, cr):
335 parent_names = getattr(cls, '_inherit', None)
337 if isinstance(parent_names, (str, unicode)):
338 name = cls._name or parent_names
339 parent_names = [parent_names]
343 raise TypeError('_name is mandatory in case of multiple inheritance')
345 for parent_name in ((type(parent_names)==list) and parent_names or [parent_names]):
346 parent_class = pool.get(parent_name).__class__
347 assert pool.get(parent_name), "parent class %s does not exist in module %s !" % (parent_name, module)
349 for s in ('_columns', '_defaults', '_inherits', '_constraints', '_sql_constraints'):
350 new = copy.copy(getattr(pool.get(parent_name), s))
352 # Don't _inherit custom fields.
356 # Duplicate float fields because they have a .digits
357 # cache (which must be per-pool, not server-wide).
359 if new[c]._type == 'float':
360 new[c] = copy.copy(new[c])
362 if hasattr(new, 'update'):
363 new.update(cls.__dict__.get(s, {}))
365 if s=='_constraints':
366 for c in cls.__dict__.get(s, []):
368 for c2 in range(len(new)):
369 #For _constraints, we should check field and methods as well
370 if new[c2][2]==c[2] and (new[c2][0] == c[0] \
371 or getattr(new[c2][0],'__name__', True) == \
372 getattr(c[0],'__name__', False)):
373 # If new class defines a constraint with
374 # same function name, we let it override
382 new.extend(cls.__dict__.get(s, []))
384 cls = type(name, (cls, parent_class), nattr)
386 # Duplicate float fields because they have a .digits
387 # cache (which must be per-pool, not server-wide).
388 for field_name, field in cls._columns.items():
389 if field._type == 'float':
390 cls._columns[field_name] = copy.copy(field)
391 obj = object.__new__(cls)
392 obj.__init__(pool, cr)
394 createInstance = classmethod(createInstance)
396 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: