fix "exclude" operations

[matthijs/upstream/django-ldapdb.git] / ldapdb / models / query.py

diff --git a/ldapdb/models/query.py b/ldapdb/models/query.py
index f90c9b169d6bf276714d5da5393832074c914bbc..1fddeeeb1aea3b8bb0ece0f4a7b079fa8d802b84 100644 (file)
--- a/ldapdb/models/query.py
+++ b/ldapdb/models/query.py
@@ -94,7 +94,7 @@ class Compiler(object):
         try:
             vals = self.connection.search_s(
                 self.query.model.base_dn,
-                ldap.SCOPE_SUBTREE,
+                self.query.model.search_scope,
                 filterstr=self.query._ldap_filter(),
                 attrlist=attrlist,
             )
@@ -190,10 +190,11 @@ class WhereNode(BaseWhereNode):
                 else:
                     clause = '(|%s)' % ''.join(equal_bits)
 
-            if self.negated:
-                bits.append('(!%s)' % clause)
-            else:
-                bits.append(clause)
+            bits.append(clause)
+
+        if not len(bits):
+            return '', []
+
         if len(bits) == 1:
             sql_string = bits[0]
         elif self.connector == AND:
@@ -202,6 +203,10 @@ class WhereNode(BaseWhereNode):
             sql_string = '(|%s)' % ''.join(bits)
         else:
             raise Exception("Unhandled WHERE connector: %s" % self.connector)
+
+        if self.negated:
+            sql_string = ('(!%s)' % sql_string)
+
         return sql_string, []
 
 class Query(BaseQuery):
@@ -219,7 +224,7 @@ class Query(BaseQuery):
         try:
             vals = ldapdb.connection.search_s(
                 self.model.base_dn,
-                ldap.SCOPE_SUBTREE,
+                self.model.search_scope,
                 filterstr=self._ldap_filter(),
                 attrlist=[],
             )
@@ -238,6 +243,9 @@ class Query(BaseQuery):
     def get_compiler(self, using=None, connection=None):
         return Compiler(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()
@@ -260,7 +268,7 @@ class QuerySet(BaseQuerySet):
         try:
             vals = ldapdb.connection.search_s(
                 self.model.base_dn,
-                ldap.SCOPE_SUBTREE,
+                self.model.search_scope,
                 filterstr=self.query._ldap_filter(),
                 attrlist=[],
             )