--- /dev/null	Thu Jan 01 00:00:00 1970 +0000
+++ b/rhodecode/model/meta.py	Wed Oct 06 03:18:16 2010 +0200
@@ -0,0 +1,58 @@
+"""SQLAlchemy Metadata and Session object"""
+from sqlalchemy.ext.declarative import declarative_base
+from sqlalchemy.orm import scoped_session, sessionmaker
+from rhodecode.model import caching_query
+from beaker import cache
+import os
+from os.path import join as jn, dirname as dn, abspath
+import time
+
+# Beaker CacheManager.  A home base for cache configurations.
+cache_manager = cache.CacheManager()
+
+__all__ = ['Base', 'Session']
+#
+# SQLAlchemy session manager. Updated by model.init_model()
+#
+Session = scoped_session(
+                sessionmaker(
+                    query_cls=caching_query.query_callable(cache_manager)
+                )
+          )
+
+# The declarative Base
+Base = declarative_base()
+#For another db...
+#Base2 = declarative_base()
+
+#===============================================================================
+# CACHE OPTIONS
+#===============================================================================
+cache_dir = jn(dn(dn(dn(abspath(__file__)))), 'data', 'cache')
+if not os.path.isdir(cache_dir):
+    os.mkdir(cache_dir)
+# set start_time to current time
+# to re-cache everything
+# upon application startup
+start_time = time.time()
+# configure the "sqlalchemy" cache region.
+cache_manager.regions['sql_cache_short'] = {
+        'type':'memory',
+        'data_dir':cache_dir,
+        'expire':10,
+        'start_time':start_time
+    }
+cache_manager.regions['sql_cache_med'] = {
+        'type':'memory',
+        'data_dir':cache_dir,
+        'expire':360,
+        'start_time':start_time
+    }
+cache_manager.regions['sql_cache_long'] = {
+        'type':'file',
+        'data_dir':cache_dir,
+        'expire':3600,
+        'start_time':start_time
+    }
+#to use cache use this in query
+#.options(FromCache("sqlalchemy_cache_type", "cachekey"))