2 # -*- encoding: utf-8 -*-
3 ##############################################################################
5 # OpenERP, Open Source Management Solution
6 # Copyright (C) 2004-2009 Tiny SPRL (<http://tiny.be>). All Rights Reserved
9 # This program is free software: you can redistribute it and/or modify
10 # it under the terms of the GNU General Public License as published by
11 # the Free Software Foundation, either version 3 of the License, or
12 # (at your option) any later version.
14 # This program is distributed in the hope that it will be useful,
15 # but WITHOUT ANY WARRANTY; without even the implied warranty of
16 # MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
17 # GNU General Public License for more details.
19 # You should have received a copy of the GNU General Public License
20 # along with this program. If not, see <http://www.gnu.org/licenses/>.
22 ##############################################################################
24 from tools import flatten, reverse_enumerate
28 class expression(object):
30 parse a domain expression
31 use a real polish notation
32 leafs are still in a ('foo', '=', 'bar') format
33 For more info: http://christophe-simonis-at-tiny.blogspot.com/2008/08/new-new-domain-notation.html
36 def _is_operator(self, element):
37 return isinstance(element, (str, unicode)) and element in ['&', '|', '!']
39 def _is_leaf(self, element, internal=False):
40 OPS = ('=', '!=', '<>', '<=', '<', '>', '>=', '=?', '=like', 'like', 'not like', 'ilike', 'not ilike', 'in', 'not in', 'child_of')
41 INTERNAL_OPS = OPS + ('inselect',)
42 return (isinstance(element, tuple) or isinstance(element, list)) \
43 and len(element) == 3 \
44 and (((not internal) and element[1] in OPS) \
45 or (internal and element[1] in INTERNAL_OPS))
47 def __execute_recursive_in(self, cr, s, f, w, ids):
48 # todo: merge into parent query as sub-query
50 for i in range(0, len(ids), cr.IN_MAX):
51 subids = ids[i:i+cr.IN_MAX]
52 cr.execute('SELECT "%s"' \
54 ' WHERE "%s" = ANY (%%s)' % (s, f, w), (subids,))
55 res.extend([r[0] for r in cr.fetchall()])
59 def __init__(self, exp):
60 # check if the expression is valid
61 if not reduce(lambda acc, val: acc and (self._is_operator(val) or self._is_leaf(val)), exp, True):
62 raise ValueError('Bad domain expression: %r' % (exp,))
64 self.__tables = {} # used to store the table to use for the sql generation. key = index of the leaf
66 self.__main_table = None # 'root' table. set by parse()
67 self.__DUMMY_LEAF = (1, '=', 1) # a dummy leaf that must not be parsed or sql generated
70 def parse(self, cr, uid, table, context):
71 """ transform the leafs of the expression """
75 def _rec_get(ids, table, parent=None, left='id', prefix=''):
76 if table._parent_store and (not table.pool._init):
77 # TODO: Improve where joins are implemented for many with '.', replace by:
78 # doms += ['&',(prefix+'.parent_left','<',o.parent_right),(prefix+'.parent_left','>=',o.parent_left)]
80 for o in table.browse(cr, uid, ids, context=context):
83 doms += ['&', ('parent_left', '<', o.parent_right), ('parent_left', '>=', o.parent_left)]
85 return [(left, 'in', table.search(cr, uid, doms, context=context))]
88 def rg(ids, table, parent):
91 ids2 = table.search(cr, uid, [(parent, 'in', ids)], context=context)
92 return ids + rg(ids2, table, parent)
93 return [(left, 'in', rg(ids, table, parent or table._parent_name))]
95 self.__main_table = table
98 while i + 1<len(self.__exp):
101 if self._is_operator(e) or e == self.__DUMMY_LEAF:
103 left, operator, right = e
105 working_table = table
107 fargs = left.split('.', 1)
109 if left in table._inherit_fields:
111 field = main_table._columns.get(fargs[0], False)
113 working_table = main_table
114 self.__tables[i] = working_table
116 working_table = main_table.pool.get(main_table._inherit_fields[left][0])
117 if working_table not in self.__tables.values():
118 self.__joins.append(('%s.%s=%s.%s' % (working_table._table, 'id', main_table._table, main_table._inherits[working_table._name]), working_table._table))
119 self.__tables[index] = working_table
121 main_table = working_table
123 field = working_table._columns.get(fargs[0], False)
125 if left == 'id' and operator == 'child_of':
126 dom = _rec_get(right, working_table)
127 self.__exp = self.__exp[:i] + dom + self.__exp[i+1:]
130 field_obj = table.pool.get(field._obj)
132 if field._type == 'many2one':
133 right = field_obj.search(cr, uid, [(fargs[1], operator, right)], context=context)
134 self.__exp[i] = (fargs[0], 'in', right)
137 if field._properties:
138 # this is a function field
140 if not field._fnct_search:
141 # the function field doesn't provide a search function and doesn't store
142 # values in the database, so we must ignore it : we generate a dummy leaf
143 self.__exp[i] = self.__DUMMY_LEAF
145 subexp = field.search(cr, uid, table, left, [self.__exp[i]])
146 # we assume that the expression is valid
147 # we create a dummy leaf for forcing the parsing of the resulting expression
149 self.__exp.insert(i + 1, self.__DUMMY_LEAF)
150 for j, se in enumerate(subexp):
151 self.__exp.insert(i + 2 + j, se)
153 # else, the value of the field is store in the database, so we search on it
156 elif field._type == 'one2many':
157 if isinstance(right, basestring):
158 ids2 = [x[0] for x in field_obj.name_search(cr, uid, right, [], operator, limit=None)]
162 self.__exp[i] = ('id', '=', '0')
164 self.__exp[i] = ('id', 'in', self.__execute_recursive_in(cr, field._fields_id, field_obj._table, 'id', ids2))
166 elif field._type == 'many2many':
168 if operator == 'child_of':
169 if isinstance(right, basestring):
170 ids2 = [x[0] for x in field_obj.name_search(cr, uid, right, [], 'like', limit=None)]
174 def _rec_convert(ids):
175 if field_obj == table:
177 return self.__execute_recursive_in(cr, field._id1, field._rel, field._id2, ids)
179 dom = _rec_get(ids2, field_obj)
180 ids2 = field_obj.search(cr, uid, dom, context=context)
181 self.__exp[i] = ('id', 'in', _rec_convert(ids2))
183 if isinstance(right, basestring):
184 res_ids = [x[0] for x in field_obj.name_search(cr, uid, right, [], operator)]
186 res_ids = list(right)
187 self.__exp[i] = ('id', 'in', self.__execute_recursive_in(cr, field._id1, field._rel, field._id2, res_ids) or [0])
188 elif field._type == 'many2one':
189 if operator == 'child_of':
190 if isinstance(right, basestring):
191 ids2 = [x[0] for x in field_obj.name_search(cr, uid, right, [], 'like', limit=None)]
192 elif isinstance(right, (int, long)):
197 self.__operator = 'in'
198 if field._obj != working_table._name:
199 dom = _rec_get(ids2, field_obj, left=left, prefix=field._obj)
201 dom = _rec_get(ids2, working_table, parent=left)
202 self.__exp = self.__exp[:i] + dom + self.__exp[i+1:]
204 if isinstance(right, basestring): # and not isinstance(field, fields.related):
206 c['active_test'] = False
207 res_ids = field_obj.name_search(cr, uid, right, [], operator, limit=None, context=c)
208 right = map(lambda x: x[0], res_ids)
209 self.__exp[i] = (left, 'in', right)
212 # add the time part to datetime field when it's not there:
213 if field._type == 'datetime' and self.__exp[i][2] and len(self.__exp[i][2]) == 10:
215 self.__exp[i] = list(self.__exp[i])
217 if operator in ('>', '>='):
218 self.__exp[i][2] += ' 00:00:00'
219 elif operator in ('<', '<='):
220 self.__exp[i][2] += ' 23:59:59'
222 self.__exp[i] = tuple(self.__exp[i])
225 if operator in ('like', 'ilike', 'not like', 'not ilike'):
226 right = '%%%s%%' % right
228 operator = operator == '=like' and 'like' or operator
230 query1 = '( SELECT res_id' \
231 ' FROM ir_translation' \
236 #Covering in,not in operators with operands (%s,%s) ,etc.
237 if operator in ['in','not in']:
238 instr = ','.join(['%s'] * len(right))
239 query1 += ' AND value ' + operator + ' ' +" (" + instr + ")" \
242 ' FROM "' + working_table._table + '"' \
243 ' WHERE "' + left + '" ' + operator + ' ' +" (" + instr + "))"
245 query1 += ' AND value ' + operator + instr + \
248 ' FROM "' + working_table._table + '"' \
249 ' WHERE "' + left + '" ' + operator + instr + ")"
251 query2 = [working_table._name + ',' + left,
252 context.get('lang', False) or 'en_US',
258 self.__exp[i] = ('id', 'inselect', (query1, query2))
262 def __leaf_to_sql(self, leaf, table):
263 if leaf == self.__DUMMY_LEAF:
265 left, operator, right = leaf
267 if operator == 'inselect':
268 query = '(%s.%s in (%s))' % (table._table, left, right[0])
270 elif operator in ['in', 'not in']:
272 len_before = len(params)
273 for i in range(len_before)[::-1]:
274 if params[i] == False:
277 len_after = len(params)
278 check_nulls = len_after != len_before
283 instr = ','.join(['%s'] * len_after)
285 instr = ','.join([table._columns[left]._symbol_set[0]] * len_after)
286 query = '(%s.%s %s (%s))' % (table._table, left, operator, instr)
289 query = '(%s OR %s.%s IS NULL)' % (query, table._table, left)
293 if right == False and (leaf[0] in table._columns) and table._columns[leaf[0]]._type=="boolean" and (operator == '='):
294 query = '(%s.%s IS NULL or %s.%s = false )' % (table._table, left,table._table, left)
295 elif (((right == False) and (type(right)==bool)) or (right is None)) and (operator == '='):
296 query = '%s.%s IS NULL ' % (table._table, left)
297 elif right == False and (leaf[0] in table._columns) and table._columns[leaf[0]]._type=="boolean" and (operator in ['<>', '!=']):
298 query = '(%s.%s IS NOT NULL and %s.%s != false)' % (table._table, left,table._table, left)
299 elif (((right == False) and (type(right)==bool)) or right is None) and (operator in ['<>', '!=']):
300 query = '%s.%s IS NOT NULL' % (table._table, left)
301 elif (operator == '=?'):
303 if (right is False or right is None):
305 if left in table._columns:
306 format = table._columns[left]._symbol_set[0]
307 query = '(%s.%s %s %s)' % (table._table, left, op, format)
308 params = table._columns[left]._symbol_set[1](right)
310 query = "(%s.%s %s '%%s')" % (table._table, left, op)
315 query = '%s.id %s %%s' % (table._table, operator)
318 like = operator in ('like', 'ilike', 'not like', 'not ilike')
320 op = operator == '=like' and 'like' or operator
321 if left in table._columns:
322 format = like and '%s' or table._columns[left]._symbol_set[0]
323 query = '(%s.%s %s %s)' % (table._table, left, op, format)
325 query = "(%s.%s %s '%s')" % (table._table, left, op, right)
329 if isinstance(right, str):
331 elif isinstance(right, unicode):
332 str_utf8 = right.encode('utf-8')
334 str_utf8 = str(right)
335 params = '%%%s%%' % str_utf8
336 add_null = not str_utf8
337 elif left in table._columns:
338 params = table._columns[left]._symbol_set[1](right)
341 query = '(%s OR %s IS NULL)' % (query, left)
343 if isinstance(params, basestring):
345 return (query, params)
351 for i, e in reverse_enumerate(self.__exp):
352 if self._is_leaf(e, internal=True):
353 table = self.__tables.get(i, self.__main_table)
354 q, p = self.__leaf_to_sql(e, table)
359 stack.append('(NOT (%s))' % (stack.pop(),))
361 ops = {'&': ' AND ', '|': ' OR '}
364 stack.append('(%s %s %s)' % (q1, ops[e], q2,))
366 query = ' AND '.join(reversed(stack))
367 joins = ' AND '.join(map(lambda j: j[0], self.__joins))
369 query = '(%s) AND (%s)' % (joins, query)
370 return (query, flatten(params))
372 def get_tables(self):
373 return ['"%s"' % t._table for t in set(self.__tables.values()+[self.__main_table])]
375 # vim:expandtab:smartindent:tabstop=4:softtabstop=4:shiftwidth=4: