TimestampFromTicks fix.

ChangeLog

@@ -3,6 +3,15 @@
 	* psycopg/cursor_type.c (_psyco_curs_execute): fixed segfault when
 	not passing string or unicode to .execute().
 
+2005-06-01  Federico Di Gregorio  <fog@debian.org>
+
+	* examples/fetch.py: added example about using DECLARE CURSOR.
+
+	* psycopg/adapter_datetime.c (psyco_TimestampFromTicks): "Hmmm,
+	looks like someone forgot that C expects months to start counting
+	from 0, but the Python date routines start counting from 1." That
+	was me: fixed.
+
 2005-05-31  Federico Di Gregorio  <fog@debian.org>
 
 	* psycopg/cursor_type.c (_psyco_curs_execute): if a

examples/fetch.py

@@ -0,0 +1,71 @@
+# fetch.py -- example about declaring cursors
+#
+# Copyright (C) 2001-2005 Federico Di Gregorio  <fog@debian.org>
+#
+# This program is free software; you can redistribute it and/or modify
+# it under the terms of the GNU General Public License as published by the
+# Free Software Foundation; either version 2, or (at your option) any later
+# version.
+#
+# This program is distributed in the hope that it will be useful, but
+# WITHOUT ANY WARRANTY; without even the implied warranty of MERCHANTIBILITY
+# or FITNESS FOR A PARTICULAR PURPOSE.  See the GNU General Public License
+# for more details.
+#
+
+## put in DSN your DSN string
+
+DSN = 'dbname=test'
+
+## don't modify anything below tis line (except for experimenting)
+
+import sys
+import psycopg
+
+if len(sys.argv) > 1:
+    DSN = sys.argv[1]
+
+print "Opening connection using dns:", DSN
+conn = psycopg.connect(DSN)
+print "Encoding for this connection is", conn.encoding
+
+curs = conn.cursor()
+try:
+    curs.execute("CREATE TABLE test_fetch (val int4)")
+except:
+    conn.rollback()
+    curs.execute("DROP TABLE test_fetch")
+    curs.execute("CREATE TABLE test_fetch (val int4)")
+conn.commit()
+
+# we use this function to format the output
+
+def flatten(l):
+    """Flattens list of tuples l."""
+    return map(lambda x: x[0], l)
+
+# insert 20 rows in the table
+
+for i in range(20):
+    curs.execute("INSERT INTO test_fetch VALUES(%s)", (i,))
+conn.commit()
+
+# does some nice tricks with the transaction and postgres cursors
+# (remember to always commit or rollback before a DECLARE)
+
+curs.execute("DECLARE crs CURSOR FOR SELECT * FROM test_fetch")
+curs.execute("FETCH 10 FROM crs")
+print "First 10 rows:", flatten(curs.fetchall())
+curs.execute("MOVE -5 FROM crs")
+print "Moved back cursor by 5 rows (to row 5.)"
+curs.execute("FETCH 10 FROM crs")
+print "Another 10 rows:", flatten(curs.fetchall())
+curs.execute("FETCH 10 FROM crs")
+print "The remaining rows:", flatten(curs.fetchall())
+
+# rollback to close the transaction
+
+conn.rollback()
+
+curs.execute("DROP TABLE test_fetch")
+conn.commit()

psycopg/adapter_datetime.c

@@ -338,7 +338,7 @@ psyco_DateFromTicks(PyObject *self, PyObject *args)
 
     t = (time_t)round(ticks);
     if (gmtime_r(&t, &tm)) {
-        args = Py_BuildValue("iii", tm.tm_year, tm.tm_mon, tm.tm_mday);
+        args = Py_BuildValue("iii", tm.tm_year, tm.tm_mon+1, tm.tm_mday);
         if (args) {
             res = psyco_Date(self, args);
             Py_DECREF(args);
@@ -383,7 +383,7 @@ psyco_TimestampFromTicks(PyObject *self, PyObject *args)
     t = (time_t)round(ticks);
     if (gmtime_r(&t, &tm)) {
         args = Py_BuildValue("iiiiid",
-                             tm.tm_year, tm.tm_mon, tm.tm_mday,
+                             tm.tm_year, tm.tm_mon+1, tm.tm_mday,
                              tm.tm_hour, tm.tm_min, (double)tm.tm_sec);
         if (args) {
             res = psyco_Timestamp(self, args);