git cmd implementation of repository appears to work, at least this is what the test suggests. Pure python implementation still has some trouble, but this should be very fixable

3 files changed, 15 insertions, 13 deletions

diff --git a/git/db/py/base.py b/git/db/py/base.py
index 74b8beb9..4d9b6e14 100644
--- a/git/db/py/base.py
+++ b/git/db/py/base.py
@@ -8,6 +8,7 @@ from git.db.interface import *
 from git.util import (
 		pool,
 		join,
+		isfile,
 		normpath,
 		abspath,
 		dirname,
@@ -25,7 +26,8 @@ from git.config import GitConfigParser
 from git.exc import 	(
 						BadObject, 
 						AmbiguousObjectName,
-						InvalidDBRoot
+						InvalidGitRepositoryError,
+						NoSuchPathError
 						)
 
 from async import ChannelThreadTask
@@ -240,7 +242,7 @@ class PureRepositoryPathsMixin(RepositoryPathsMixin):
 		epath = abspath(expandvars(expanduser(path or os.getcwd())))
 
 		if not exists(epath):
-			raise InvalidDBRoot(epath)
+			raise NoSuchPathError(epath)
 		#END check file 
 
 		self._working_tree_dir = None
@@ -264,7 +266,7 @@ class PureRepositoryPathsMixin(RepositoryPathsMixin):
 		# END while curpath
 		
 		if self._git_path is None:
-			raise InvalidDBRoot(epath)
+			raise InvalidGitRepositoryError(epath)
 		# END path not found
 
 		self._bare = self._git_path.endswith(self.repo_dir)
@@ -351,6 +353,7 @@ class PureConfigurationMixin(ConfigurationMixin):
 	
 	def __init__(self, *args, **kwargs):
 		"""Verify prereqs"""
+		super(PureConfigurationMixin, self).__init__(*args, **kwargs)
 		assert hasattr(self, 'git_dir')
 	
 	def _path_at_level(self, level ):
diff --git a/git/db/py/complex.py b/git/db/py/complex.py
index 9d891537..a51118b3 100644
--- a/git/db/py/complex.py
+++ b/git/db/py/complex.py
@@ -1,6 +1,6 @@
 # Copyright (C) 2010, 2011 Sebastian Thiel (byronimo@gmail.com) and contributors
 #
-# This module is part of PureGitDB and is released under
+# This module is part of PurePartialGitDB and is released under
 # the New BSD License: http://www.opensource.org/licenses/bsd-license.php
 from git.db.interface import HighLevelRepository
 from base import (
@@ -12,7 +12,7 @@ from base import (
 						PureAlternatesFileMixin,
 						PureIndexDB,
 					)
-
+from transport import PureTransportDB
 from resolve import PureReferencesMixin
 
 from loose import PureLooseObjectODB
@@ -35,14 +35,14 @@ from git.exc import (
 						)
 import os
 
-__all__ = ('PureGitODB', 'PureGitDB', 'PureCompatibilityGitDB')
+__all__ = ('PureGitODB', 'PurePartialGitDB', 'PureCompatibilityGitDB')
 
 
 class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB):
 	"""A git-style object-only database, which contains all objects in the 'objects'
 	subdirectory.
 	:note: The type needs to be initialized on the ./objects directory to function, 
-		as it deals solely with object lookup. Use a PureGitDB type if you need
+		as it deals solely with object lookup. Use a PurePartialGitDB type if you need
 		reference and push support."""
 	# Configuration
 	PackDBCls = PurePackedODB
@@ -103,10 +103,10 @@ class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB):
 	
 	
 	
-class PureGitDB(PureGitODB, 
+class PurePartialGitDB(PureGitODB, 
 				PureRepositoryPathsMixin, PureConfigurationMixin, 
 				PureReferencesMixin, PureSubmoduleDB, PureAlternatesFileMixin, 
-				PureIndexDB,
+				PureIndexDB, PureTransportDB
 				# HighLevelRepository  Currently not implemented !
 				):
 	"""Git like database with support for object lookup as well as reference resolution.
@@ -119,10 +119,10 @@ class PureGitDB(PureGitODB,
 	def __init__(self, root_path):
 		"""Initialize ourselves on the .git directory, or the .git/objects directory."""
 		PureRepositoryPathsMixin._initialize(self, root_path)
-		super(PureGitDB, self).__init__(self.objects_dir)
+		super(PurePartialGitDB, self).__init__(self.objects_dir)
 	
 	
 	
-class PureCompatibilityGitDB(PureGitDB, RepoCompatibilityInterface):
+class PureCompatibilityGitDB(PurePartialGitDB, RepoCompatibilityInterface):
 	"""Pure git database with a compatability layer required by 0.3x code"""
 	
diff --git a/git/db/py/resolve.py b/git/db/py/resolve.py
index 7194149c..7bea779e 100644
--- a/git/db/py/resolve.py
+++ b/git/db/py/resolve.py
@@ -320,8 +320,7 @@ class PureReferencesMixin(ReferencesMixin):
 		return self.TagReferenceCls.list_items(self)
 	
 	def tag(self, name):
-		return self.tags[name]
-		
+		return self.TagReferenceCls(self, self.TagReferenceCls.to_full_path(name))
 	
 	def commit(self, rev=None):
 		if rev is None: