Setting tag plcapi-5.4-2

[plcapi.git] / PLC / PostgreSQL.py

diff --git a/PLC/PostgreSQL.py b/PLC/PostgreSQL.py
index 09132e2..e04b02b 100644 (file)
--- a/PLC/PostgreSQL.py
+++ b/PLC/PostgreSQL.py
@@ -1,13 +1,10 @@
 #
-# PostgreSQL database interface. Sort of like DBI(3) (Database
-# independent interface for Perl).
+# PostgreSQL database interface. 
+# Sort of like DBI(3) (Database independent interface for Perl).
 #
 # Mark Huang <mlhuang@cs.princeton.edu>
 # Copyright (C) 2006 The Trustees of Princeton University
 #
-# $Id$
-# $URL$
-#
 
 import psycopg2
 import psycopg2.extensions
@@ -15,15 +12,17 @@ psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
 # UNICODEARRAY not exported yet
 psycopg2.extensions.register_type(psycopg2._psycopg.UNICODEARRAY)
 
-import pgdb
+import types
 from types import StringTypes, NoneType
 import traceback
 import commands
 import re
 from pprint import pformat
 
-from PLC.Debug import profile, log
+from PLC.Logger import logger
+from PLC.Debug import profile
 from PLC.Faults import *
+from datetime import datetime as DateTimeType
 
 class PostgreSQL:
     def __init__(self, api):
@@ -59,23 +58,50 @@ class PostgreSQL:
             self.connection.close()
             self.connection = None
 
-    # join insists on getting strings
-    @classmethod
-    def quote_string(self, value):
-        return str(PostgreSQL.quote(value))
+    @staticmethod
+    # From pgdb, and simplify code
+    def _quote(x):
+        if isinstance(x, DateTimeType):
+            x = str(x)
+        elif isinstance(x, unicode):
+            x = x.encode( 'utf-8' )
+    
+        if isinstance(x, types.StringType):
+            x = "'%s'" % str(x).replace("\\", "\\\\").replace("'", "''")
+        elif isinstance(x, (types.IntType, types.LongType, types.FloatType)):
+            pass
+        elif x is None:
+            x = 'NULL'
+        elif isinstance(x, (types.ListType, types.TupleType, set)):
+            x = 'ARRAY[%s]' % ', '.join(map(lambda x: str(_quote(x)), x))
+        elif hasattr(x, '__pg_repr__'):
+            x = x.__pg_repr__()
+        else:
+            raise PLCDBError, 'Cannot quote type %s' % type(x)
+        return x
+
 
-    @classmethod
     def quote(self, value):
         """
         Returns quoted version of the specified value.
         """
-
-        # The pgdb._quote function is good enough for general SQL
-        # quoting, except for array types.
-        if isinstance(value, (list, tuple, set)):
-            return "ARRAY[%s]" % ", ".join(map (PostgreSQL.quote_string, value))
-        else:
-            return pgdb._quote(value)
+        return PostgreSQL._quote (value)
+
+# following is an unsuccessful attempt to re-use lib code as much as possible
+#    def quote(self, value):
+#        # The pgdb._quote function is good enough for general SQL
+#        # quoting, except for array types.
+#        if isinstance (value, (types.ListType, types.TupleType, set)):
+#            'ARRAY[%s]' % ', '.join( [ str(self.quote(x)) for x in value ] )
+#        else:
+#            try:
+#                # up to PyGreSQL-3.x, function was pgdb._quote
+#                import pgdb
+#                return pgdb._quote(value)
+#            except:
+#                # with PyGreSQL-4.x, use psycopg2's adapt
+#                from psycopg2.extensions import adapt
+#                return adapt (value)
 
     @classmethod
     def param(self, name, value):
@@ -110,13 +136,13 @@ class PostgreSQL:
         return self.rowcount
 
     def next_id(self, table_name, primary_key):
-       sequence = "%(table_name)s_%(primary_key)s_seq" % locals()      
-       sql = "SELECT nextval('%(sequence)s')" % locals()
-       rows = self.selectall(sql, hashref = False)
-       if rows: 
-           return rows[0][0]
-               
-       return None 
+        sequence = "%(table_name)s_%(primary_key)s_seq" % locals()
+        sql = "SELECT nextval('%(sequence)s')" % locals()
+        rows = self.selectall(sql, hashref = False)
+        if rows:
+            return rows[0][0]
+
+        return None
 
     def last_insert_id(self, table_name, primary_key):
         if isinstance(self.lastrowid, int):
@@ -128,7 +154,7 @@ class PostgreSQL:
 
         return None
 
-    # modified for psycopg2-2.0.7 
+    # modified for psycopg2-2.0.7
     # executemany is undefined for SELECT's
     # see http://www.python.org/dev/peps/pep-0249/
     # accepts either None, a single dict, a tuple of single dict - in which case it execute's
@@ -150,21 +176,22 @@ class PostgreSQL:
 
             if not params:
                 if self.debug:
-                    print >> log,'execute0',query
+                    logger.debug('execute0: {}'.format(query))
                 cursor.execute(query)
-            elif isinstance(params,dict):
+            elif isinstance(params, dict):
                 if self.debug:
-                    print >> log,'execute-dict: params',params,'query',query%params
-                cursor.execute(query,params)
+                    logger.debug('execute-dict: params {} query {}'
+                                 .format(params, query%params))
+                cursor.execute(query, params)
             elif isinstance(params,tuple) and len(params)==1:
                 if self.debug:
-                    print >> log,'execute-tuple',query%params[0]
+                    logger.debug('execute-tuple {}'.format(query%params[0]))
                 cursor.execute(query,params[0])
             else:
                 param_seq=(params,)
                 if self.debug:
                     for params in param_seq:
-                        print >> log,'executemany',query%params
+                        logger.debug('executemany {}'.format(query%params))
                 cursor.executemany(query, param_seq)
             (self.rowcount, self.description, self.lastrowid) = \
                             (cursor.rowcount, cursor.description, cursor.lastrowid)
@@ -174,12 +201,8 @@ class PostgreSQL:
             except:
                 pass
             uuid = commands.getoutput("uuidgen")
-            print >> log, "Database error %s:" % uuid
-            print >> log, e
-            print >> log, "Query:"
-            print >> log, query
-            print >> log, "Params:"
-            print >> log, pformat(params)
+            message = "Database error {}: - Query {} - Params {}".format(uuid, query, pformat(params))
+            logger.exception(message)
             raise PLCDBError("Please contact " + \
                              self.api.config.PLC_NAME + " Support " + \
                              "<" + self.api.config.PLC_MAIL_SUPPORT_ADDRESS + ">" + \