from django.db.models.sql.where import WhereNode as BaseWhereNode, Constraint as BaseConstraint, AND, OR
import ldapdb
-
+from ldapdb.backends.ldap import compiler
from ldapdb.models.fields import CharField
def get_lookup_operator(lookup_type):
NOTES:
- we redefine this class, because when self.field is None calls
Field().get_db_prep_lookup(), which short-circuits our LDAP-specific code.
- - the connection argument defaults to None for django 1.1 compatibility
"""
- def process(self, lookup_type, value, connection=None):
+ def process(self, lookup_type, value, connection):
"""
Returns a tuple of data suitable for inclusion in a WhereNode
instance.
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,
- self.query.model.search_scope,
- 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)):
constraint, lookup_type, y, values = item
comp = get_lookup_operator(lookup_type)
- if hasattr(constraint, "col"):
- # django 1.2
- column = constraint.col
- if lookup_type == 'in':
- equal_bits = [ "(%s%s%s)" % (column, comp, value) for value in values ]
- clause = '(|%s)' % ''.join(equal_bits)
- else:
- clause = "(%s%s%s)" % (constraint.col, comp, values)
+ if lookup_type == 'in':
+ equal_bits = [ "(%s%s%s)" % (constraint.col, comp, value) for value in values ]
+ clause = '(|%s)' % ''.join(equal_bits)
else:
- # django 1.1
- (table, column, db_type) = constraint
- equal_bits = [ "(%s%s%s)" % (column, comp, value) for value in values ]
- if len(equal_bits) == 1:
- clause = equal_bits[0]
- else:
- clause = '(|%s)' % ''.join(equal_bits)
+ clause = "(%s%s%s)" % (constraint.col, comp, values)
bits.append(clause)
filterstr += sql
return '(&%s)' % filterstr
- def get_count(self, using=None):
+ def get_count(self, using):
try:
vals = ldapdb.connection.search_s(
self.model.base_dn,
return number
def get_compiler(self, using=None, connection=None):
- return Compiler(self, ldapdb.connection, using)
+ return compiler.SQLCompiler(self, ldapdb.connection, using)
def has_results(self, using):
- return self.get_count() != 0
-
- def results_iter(self):
- "For django 1.1 compatibility"
- return self.get_compiler().results_iter()
+ return self.get_count(using) != 0
class QuerySet(BaseQuerySet):
def __init__(self, model=None, query=None, using=None):
if not query:
- import inspect
- spec = inspect.getargspec(BaseQuery.__init__)
- if len(spec[0]) == 3:
- # django 1.2
- query = Query(model, WhereNode)
- else:
- # django 1.1
- query = Query(model, None, WhereNode)
- super(QuerySet, self).__init__(model=model, query=query)
+ query = Query(model, WhereNode)
+ super(QuerySet, self).__init__(model=model, query=query, using=using)
def delete(self):
"Bulk deletion."
projects / matthijs / upstream / django-ldapdb.git / blobdiff