return (self.alias, self.col, db_type), params
+class Compiler(object):
+ def __init__(self, query, connection, using):
+ self.query = query
+ self.connection = connection
+ self.using = using
+
+ def results_iter(self):
+ if self.query.select_fields:
+ fields = self.query.select_fields
+ else:
+ fields = self.query.model._meta.fields
+
+ attrlist = [ x.db_column for x in fields if x.db_column ]
+
+ try:
+ vals = self.connection.search_s(
+ self.query.model.base_dn,
+ ldap.SCOPE_SUBTREE,
+ filterstr=self.query._ldap_filter(),
+ attrlist=attrlist,
+ )
+ except ldap.NO_SUCH_OBJECT:
+ return
+
+ # perform sorting
+ if self.query.extra_order_by:
+ ordering = self.query.extra_order_by
+ elif not self.query.default_ordering:
+ ordering = self.query.order_by
+ else:
+ ordering = self.query.order_by or self.query.model._meta.ordering
+ def cmpvals(x, y):
+ for fieldname in ordering:
+ if fieldname.startswith('-'):
+ fieldname = fieldname[1:]
+ negate = True
+ else:
+ negate = False
+ field = self.query.model._meta.get_field(fieldname)
+ attr_x = field.from_ldap(x[1].get(field.db_column, []), connection=self.connection)
+ attr_y = field.from_ldap(y[1].get(field.db_column, []), connection=self.connection)
+ # perform case insensitive comparison
+ if hasattr(attr_x, 'lower'):
+ attr_x = attr_x.lower()
+ if hasattr(attr_y, 'lower'):
+ attr_y = attr_y.lower()
+ val = negate and cmp(attr_y, attr_x) or cmp(attr_x, attr_y)
+ if val:
+ return val
+ return 0
+ vals = sorted(vals, cmp=cmpvals)
+
+ # process results
+ pos = 0
+ for dn, attrs in vals:
+ # FIXME : This is not optimal, we retrieve more results than we need
+ # but there is probably no other options as we can't perform ordering
+ # server side.
+ if (self.query.low_mark and pos < self.query.low_mark) or \
+ (self.query.high_mark is not None and pos >= self.query.high_mark):
+ pos += 1
+ continue
+ row = []
+ for field in iter(fields):
+ if field.attname == 'dn':
+ row.append(dn)
+ elif hasattr(field, 'from_ldap'):
+ row.append(field.from_ldap(attrs.get(field.db_column, []), connection=self.connection))
+ else:
+ row.append(None)
+ yield row
+ pos += 1
+
+
class WhereNode(BaseWhereNode):
def add(self, data, connector):
if not isinstance(data, (list, tuple)):
obj = Constraint(obj.alias, obj.col, obj.field)
super(WhereNode, self).add((obj, lookup_type, value), connector)
- def as_sql(self, qn=None):
+ def as_sql(self, qn=None, connection=None):
bits = []
for item in self.children:
- if isinstance(item, WhereNode):
- sql, params = item.as_sql()
+ if hasattr(item, 'as_sql'):
+ sql, params = item.as_sql(qn=qn, connection=connection)
bits.append(sql)
continue
super(Query, self).__init__(*args, **kwargs)
self.connection = ldapdb.connection
- def get_count(self):
+ def _ldap_filter(self):
filterstr = ''.join(['(objectClass=%s)' % cls for cls in self.model.object_classes])
sql, params = self.where.as_sql()
filterstr += sql
- filterstr = '(&%s)' % filterstr
+ return '(&%s)' % filterstr
+ def get_count(self, using=None):
try:
vals = ldapdb.connection.search_s(
self.model.base_dn,
ldap.SCOPE_SUBTREE,
- filterstr=filterstr,
+ filterstr=self._ldap_filter(),
attrlist=[],
)
- except:
- raise self.model.DoesNotExist
+ except ldap.NO_SUCH_OBJECT:
+ return 0
- return len(vals)
+ number = len(vals)
- def results_iter(self):
- filterstr = ''.join(['(objectClass=%s)' % cls for cls in self.model.object_classes])
- sql, params = self.where.as_sql()
- filterstr += sql
- filterstr = '(&%s)' % filterstr
- attrlist = [ x.db_column for x in self.model._meta.local_fields if x.db_column ]
+ # apply limit and offset
+ number = max(0, number - self.low_mark)
+ if self.high_mark is not None:
+ number = min(number, self.high_mark - self.low_mark)
- try:
- vals = ldapdb.connection.search_s(
- self.model.base_dn,
- ldap.SCOPE_SUBTREE,
- filterstr=filterstr,
- attrlist=attrlist,
- )
- except:
- raise self.model.DoesNotExist
+ return number
- # perform sorting
- if self.extra_order_by:
- ordering = self.extra_order_by
- elif not self.default_ordering:
- ordering = self.order_by
- else:
- ordering = self.order_by or self.model._meta.ordering
- def cmpvals(x, y):
- for field in ordering:
- if field.startswith('-'):
- field = field[1:]
- negate = True
- else:
- negate = False
- attr = self.model._meta.get_field(field).db_column
- attr_x = x[1].get(attr, '').lower()
- attr_y = y[1].get(attr, '').lower()
- val = negate and cmp(attr_y, attr_x) or cmp(attr_x, attr_y)
- if val:
- return val
- return 0
- vals = sorted(vals, cmp=cmpvals)
+ def get_compiler(self, using=None, connection=None):
+ return Compiler(self, ldapdb.connection, using)
- # process results
- for dn, attrs in vals:
- row = []
- for field in iter(self.model._meta.fields):
- if field.attname == 'dn':
- row.append(dn)
- else:
- row.append(attrs.get(field.db_column, None))
- yield row
+ def results_iter(self):
+ "For django 1.1 compatibility"
+ return self.get_compiler().results_iter()
class QuerySet(BaseQuerySet):
def __init__(self, model=None, query=None, using=None):
query = Query(model, None, WhereNode)
super(QuerySet, self).__init__(model=model, query=query)
+ def delete(self):
+ "Bulk deletion."
+ try:
+ vals = ldapdb.connection.search_s(
+ self.model.base_dn,
+ ldap.SCOPE_SUBTREE,
+ filterstr=self.query._ldap_filter(),
+ attrlist=[],
+ )
+ except ldap.NO_SUCH_OBJECT:
+ return
+
+ # FIXME : there is probably a more efficient way to do this
+ for dn, attrs in vals:
+ ldapdb.connection.delete_s(dn)
+
projects / matthijs / upstream / django-ldapdb.git / blobdiff