--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/app/django/db/backends/postgresql_psycopg2/base.py	Fri Jul 18 18:22:23 2008 +0000
@@ -0,0 +1,76 @@
+"""
+PostgreSQL database backend for Django.
+
+Requires psycopg 2: http://initd.org/projects/psycopg2
+"""
+
+from django.db.backends import BaseDatabaseWrapper, BaseDatabaseFeatures
+from django.db.backends.postgresql.operations import DatabaseOperations as PostgresqlDatabaseOperations
+from django.utils.safestring import SafeUnicode
+try:
+    import psycopg2 as Database
+    import psycopg2.extensions
+except ImportError, e:
+    from django.core.exceptions import ImproperlyConfigured
+    raise ImproperlyConfigured("Error loading psycopg2 module: %s" % e)
+
+DatabaseError = Database.DatabaseError
+IntegrityError = Database.IntegrityError
+
+psycopg2.extensions.register_type(psycopg2.extensions.UNICODE)
+psycopg2.extensions.register_adapter(SafeUnicode, psycopg2.extensions.QuotedString)
+
+class DatabaseFeatures(BaseDatabaseFeatures):
+    needs_datetime_string_cast = False
+
+class DatabaseOperations(PostgresqlDatabaseOperations):
+    def last_executed_query(self, cursor, sql, params):
+        # With psycopg2, cursor objects have a "query" attribute that is the
+        # exact query sent to the database. See docs here:
+        # http://www.initd.org/tracker/psycopg/wiki/psycopg2_documentation#postgresql-status-message-and-executed-query
+        return cursor.query
+
+class DatabaseWrapper(BaseDatabaseWrapper):
+    features = DatabaseFeatures()
+    ops = DatabaseOperations()
+    operators = {
+        'exact': '= %s',
+        'iexact': 'ILIKE %s',
+        'contains': 'LIKE %s',
+        'icontains': 'ILIKE %s',
+        'regex': '~ %s',
+        'iregex': '~* %s',
+        'gt': '> %s',
+        'gte': '>= %s',
+        'lt': '< %s',
+        'lte': '<= %s',
+        'startswith': 'LIKE %s',
+        'endswith': 'LIKE %s',
+        'istartswith': 'ILIKE %s',
+        'iendswith': 'ILIKE %s',
+    }
+
+    def _cursor(self, settings):
+        set_tz = False
+        if self.connection is None:
+            set_tz = True
+            if settings.DATABASE_NAME == '':
+                from django.core.exceptions import ImproperlyConfigured
+                raise ImproperlyConfigured("You need to specify DATABASE_NAME in your Django settings file.")
+            conn_string = "dbname=%s" % settings.DATABASE_NAME
+            if settings.DATABASE_USER:
+                conn_string = "user=%s %s" % (settings.DATABASE_USER, conn_string)
+            if settings.DATABASE_PASSWORD:
+                conn_string += " password='%s'" % settings.DATABASE_PASSWORD
+            if settings.DATABASE_HOST:
+                conn_string += " host=%s" % settings.DATABASE_HOST
+            if settings.DATABASE_PORT:
+                conn_string += " port=%s" % settings.DATABASE_PORT
+            self.connection = Database.connect(conn_string, **self.options)
+            self.connection.set_isolation_level(1) # make transactions transparent to all cursors
+            self.connection.set_client_encoding('UTF8')
+        cursor = self.connection.cursor()
+        cursor.tzinfo_factory = None
+        if set_tz:
+            cursor.execute("SET TIME ZONE %s", [settings.TIME_ZONE])
+        return cursor