Conver network array types into array of strings by default

NEWS

@@ -19,7 +19,8 @@ New features:
 - The attributes `~connection.notices` and `~connection.notifies` can be
   customized replacing them with any object exposing an `!append()` method
   (:ticket:`#326`).
-- old ``inet`` adapters deprecated (:ticket:`#343`).
+- old ``inet`` adapters deprecated, but arrays of network types converted
+  to lists by default (:tickets:`#343, #387`).
 - Added `~psycopg2.extensions.quote_ident()` function (:ticket:`#359`).
 - Added `~connection.get_dsn_parameters()` connection method (:ticket:`#364`).
 

doc/src/extras.rst

@@ -930,13 +930,20 @@ UUID data type
 
 .. index::
     pair: INET; Data types
+    pair: CIDR; Data types
+    pair: MACADDR; Data types
 
-:sql:`inet` data type
+Networking data type
-^^^^^^^^^^^^^^^^^^^^^^
+^^^^^^^^^^^^^^^^^^^^
 
-.. deprecated:: 2.7
+Psycopg casts the PostgreSQL networking data types (:sql:`inet`, :sql:`cidr`,
-    these objects will not receive further development and disappear in future
+:sql:`macaddr`) into ordinary strings. However their array are detected as
-    versions
+arrays and directly cast into lists.
+
+.. versionchanged:: 2.7
+    in previous version array of networking types were not treated as arrays
+
+.. autofunction:: register_inet
 
 .. doctest::
 
@@ -950,11 +957,16 @@ UUID data type
     >>> cur.fetchone()[0].addr
     '192.168.0.1/24'
 
+.. deprecated:: 2.7
+    this function will not receive further development and disappear in future
+    versions
 
-.. autofunction:: register_inet
 
 .. autoclass:: Inet
 
+.. deprecated:: 2.7
+    this object will not receive further development and disappear in future
+    versions
 
 
 .. index::

psycopg/typecast_builtins.c

@@ -25,6 +25,9 @@ static long int typecast_DATEARRAY_types[] = {1182, 0};
 static long int typecast_INTERVALARRAY_types[] = {1187, 0};
 static long int typecast_BINARYARRAY_types[] = {1001, 0};
 static long int typecast_ROWIDARRAY_types[] = {1028, 1013, 0};
+static long int typecast_INETARRAY_types[] = {1041, 0};
+static long int typecast_CIDRARRAY_types[] = {651, 0};
+static long int typecast_MACADDRARRAY_types[] = {1040, 0};
 static long int typecast_UNKNOWN_types[] = {705, 0};
 
 
@@ -57,6 +60,9 @@ static typecastObject_initlist typecast_builtins[] = {
   {"BINARYARRAY", typecast_BINARYARRAY_types, typecast_BINARYARRAY_cast, "BINARY"},
   {"ROWIDARRAY", typecast_ROWIDARRAY_types, typecast_ROWIDARRAY_cast, "ROWID"},
   {"UNKNOWN", typecast_UNKNOWN_types, typecast_UNKNOWN_cast, NULL},
+  {"INETARRAY", typecast_INETARRAY_types, typecast_STRINGARRAY_cast, "STRING"},
+  {"CIDRARRAY", typecast_CIDRARRAY_types, typecast_STRINGARRAY_cast, "STRING"},
+  {"MACADDRARRAY", typecast_MACADDRARRAY_types, typecast_STRINGARRAY_cast, "STRING"},
     {NULL, NULL, NULL, NULL}
 };
 

tests/test_types_basic.py

@@ -349,6 +349,16 @@ class TypesBasicTests(ConnectingTestCase):
         a = self.execute("select '{1, 2, NULL}'::int4[]")
         self.assertEqual(a, [2, 4, 'nada'])
 
+    @testutils.skip_before_postgres(8, 2)
+    def testNetworkArray(self):
+        # we don't know these types, but we know their arrays
+        a = self.execute("select '{192.168.0.1/24}'::inet[]")
+        self.assertEqual(a, ['192.168.0.1/24'])
+        a = self.execute("select '{192.168.0.0/24}'::cidr[]")
+        self.assertEqual(a, ['192.168.0.0/24'])
+        a = self.execute("select '{10:20:30:40:50:60}'::macaddr[]")
+        self.assertEqual(a, ['10:20:30:40:50:60'])
+
 
 class AdaptSubclassTest(unittest.TestCase):
     def test_adapt_subtype(self):