From: Mike Bayer <mike_mp@zzzcomputing.com>
Date: Sun, 28 May 2006 23:57:14 +0000 (+0000)
Subject: pool needed weakref
X-Git-Tag: rel_0_2_1~5
X-Git-Url: http://git.ipfire.org/gitweb.cgi?a=commitdiff_plain;h=4b8897902105379a97363a0f3d58f1e87e65b42b;p=thirdparty%2Fsqlalchemy%2Fsqlalchemy.git

pool needed weakref
modified auto rollback to only occur when no transaction
more unit tests
---

diff --git a/lib/sqlalchemy/engine/base.py b/lib/sqlalchemy/engine/base.py
index f3573711b2..eaaae29d22 100644
--- a/lib/sqlalchemy/engine/base.py
+++ b/lib/sqlalchemy/engine/base.py
@@ -167,7 +167,7 @@ class Connectable(object):
     def _not_impl(self):
         raise NotImplementedError()
     engine = property(_not_impl, doc="returns the Engine which this Connectable is associated with.")
-            
+
 class Connection(Connectable):
     """represents a single DBAPI connection returned from the underlying connection pool.  Provides
     execution support for string-based SQL statements as well as ClauseElement, Compiled and DefaultGenerator objects.
@@ -214,6 +214,9 @@ class Connection(Connectable):
         # extra step
         if not self.in_transaction() and re.match(r'UPDATE|INSERT|CREATE|DELETE|DROP', statement.lstrip().upper()):
             self._commit_impl()
+    def _autorollback(self):
+        if not self.in_transaction():
+            self._rollback_impl()
     def close(self):
         if self.__connection is not None:
             self.__connection.close()
@@ -315,7 +318,8 @@ class Connection(Connectable):
         try:
             self.__engine.dialect.do_execute(c, statement, parameters, context=context)
         except Exception, e:
-            self._rollback_impl()
+            self._autorollback()
+            #self._rollback_impl()
             if self.__close_with_result:
                 self.close()
             raise exceptions.SQLError(statement, parameters, e)
diff --git a/lib/sqlalchemy/engine/threadlocal.py b/lib/sqlalchemy/engine/threadlocal.py
index 000a854b23..a96af4ea85 100644
--- a/lib/sqlalchemy/engine/threadlocal.py
+++ b/lib/sqlalchemy/engine/threadlocal.py
@@ -67,10 +67,8 @@ class TLConnection(base.Connection):
 
 class TLTransaction(base.Transaction):
     def commit(self):
-        print "TL COMMIT"
         base.Transaction.commit(self)
         if not self.is_active:
-            print "RESET"
             self.connection.session.reset()
     def rollback(self):
         base.Transaction.rollback(self)
diff --git a/lib/sqlalchemy/pool.py b/lib/sqlalchemy/pool.py
index ec6d249513..d13beefd69 100644
--- a/lib/sqlalchemy/pool.py
+++ b/lib/sqlalchemy/pool.py
@@ -71,7 +71,7 @@ def clear_managers():
     
 class Pool(object):
     def __init__(self, echo = False, use_threadlocal = True, logger=None, **kwargs):
-        self._threadconns = {} #weakref.WeakValueDictionary()
+        self._threadconns = weakref.WeakValueDictionary()
         self._use_threadlocal = use_threadlocal
         self.echo = echo
         self._logger = logger or util.Logger(origin='pool')
diff --git a/test/transaction.py b/test/transaction.py
index 32627b1182..d4f6dc8c46 100644
--- a/test/transaction.py
+++ b/test/transaction.py
@@ -144,25 +144,56 @@ class TLTransactionTest(testbase.PersistTest):
         finally:
             external_connection.close()
 
-    def testexplicitnesting(self):
-        """tests nesting of tranacstions"""
+    def testmixednesting(self):
+        """tests nesting of transactions off the TLEngine directly inside of 
+        tranasctions off the connection from the TLEngine"""
         external_connection = tlengine.connect()
         self.assert_(external_connection.connection is not tlengine.contextual_connect().connection)
         conn = tlengine.contextual_connect()
         trans = conn.begin()
+        trans2 = conn.begin()
         tlengine.execute(users.insert(), user_id=1, user_name='user1')
         tlengine.execute(users.insert(), user_id=2, user_name='user2')
         tlengine.execute(users.insert(), user_id=3, user_name='user3')
         tlengine.begin()
         tlengine.execute(users.insert(), user_id=4, user_name='user4')
+        tlengine.begin()
         tlengine.execute(users.insert(), user_id=5, user_name='user5')
+        tlengine.execute(users.insert(), user_id=6, user_name='user6')
+        tlengine.execute(users.insert(), user_id=7, user_name='user7')
+        tlengine.commit()
+        tlengine.execute(users.insert(), user_id=8, user_name='user8')
         tlengine.commit()
+        trans2.commit()
         trans.rollback()
         conn.close()
         try:
             self.assert_(external_connection.scalar("select count(1) from query_users") == 0)
         finally:
             external_connection.close()
+
+    def testmoremixednesting(self):
+        """tests nesting of transactions off the connection from the TLEngine
+        inside of tranasctions off thbe TLEngine directly."""
+        external_connection = tlengine.connect()
+        self.assert_(external_connection.connection is not tlengine.contextual_connect().connection)
+        tlengine.begin()
+        connection = tlengine.contextual_connect()
+        connection.execute(users.insert(), user_id=1, user_name='user1')
+        tlengine.begin()
+        connection.execute(users.insert(), user_id=2, user_name='user2')
+        connection.execute(users.insert(), user_id=3, user_name='user3')
+        trans = connection.begin()
+        connection.execute(users.insert(), user_id=4, user_name='user4')
+        connection.execute(users.insert(), user_id=5, user_name='user5')
+        trans.commit()
+        tlengine.commit()
+        tlengine.rollback()
+        connection.close()
+        try:
+            self.assert_(external_connection.scalar("select count(1) from query_users") == 0)
+        finally:
+            external_connection.close()
     
     def testconnections(self):
         """tests that contextual_connect is threadlocal"""