3 files changed, 48 insertions, 4 deletions
diff --git a/git/db/py/base.py b/git/db/py/base.py
index cc326c27..74b8beb9 100644
--- a/git/db/py/base.py
+++ b/git/db/py/base.py
@@ -20,6 +20,7 @@ from git.util import (
 		is_git_dir
 	)
 
+from git.index import IndexFile
 from git.config import GitConfigParser
 from git.exc import 	(
 						BadObject, 
@@ -35,7 +36,8 @@ import os
 
 
 __all__ = (	'PureObjectDBR', 'PureObjectDBW', 'PureRootPathDB', 'PureCompoundDB', 
-			'PureConfigurationMixin', 'PureRepositoryPathsMixin', 'PureAlternatesFileMixin')
+			'PureConfigurationMixin', 'PureRepositoryPathsMixin', 'PureAlternatesFileMixin',
+			'PureIndexDB')
 
 
 class PureObjectDBR(ObjectDBR):
@@ -386,6 +388,16 @@ class PureConfigurationMixin(ConfigurationMixin):
 	#} END interface
 	
 	
+class PureIndexDB(IndexDB):
+	#{ Configuration
+	IndexCls = IndexFile
+	#} END configuration
+	
+	@property
+	def index(self):
+		return self.IndexCls(self)
+	
+	
 class PureAlternatesFileMixin(object):
 	"""Utility able to read and write an alternates file through the alternates property
 	It needs to be part of a type with the git_dir or db_path property.
diff --git a/git/db/py/complex.py b/git/db/py/complex.py
index 6504b3ed..efcbb2ba 100644
--- a/git/db/py/complex.py
+++ b/git/db/py/complex.py
@@ -2,6 +2,7 @@
 #
 # This module is part of PureGitDB 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 (
 						PureCompoundDB, 
 						PureObjectDBW, 
@@ -9,6 +10,7 @@ from base import (
 						PureRepositoryPathsMixin,
 						PureConfigurationMixin,
 						PureAlternatesFileMixin,
+						PureIndexDB,
 					)
 
 from resolve import PureReferencesMixin
@@ -36,8 +38,7 @@ import os
 __all__ = ('PureGitODB', 'PureGitDB', 'PureCompatibilityGitDB')
 
 
-class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB,
-				PureSubmoduleDB, PureAlternatesFileMixin):
+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, 
@@ -102,7 +103,12 @@ class PureGitODB(PureRootPathDB, PureObjectDBW, PureCompoundDB,
 	
 	
 	
-class PureGitDB(PureGitODB, PureRepositoryPathsMixin, PureConfigurationMixin, PureReferencesMixin):
+class PureGitDB(PureGitODB, 
+				PureRepositoryPathsMixin, PureConfigurationMixin, 
+				PureReferencesMixin, PureSubmoduleDB, PureAlternatesFileMixin, 
+				PureIndexDB,
+				# HighLevelRepository  Currently not implemented !
+				):
 	"""Git like database with support for object lookup as well as reference resolution.
 	Our rootpath is set to the actual .git directory (bare on unbare).
 	
diff --git a/git/db/py/resolve.py b/git/db/py/resolve.py
index 94992d11..d0685747 100644
--- a/git/db/py/resolve.py
+++ b/git/db/py/resolve.py
@@ -5,6 +5,7 @@ from git.db.interface import ReferencesMixin
 from git.exc import BadObject
 from git.refs import SymbolicReference
 from git.objects.base import Object
+from git.objects.commit import Commit
 from git.refs.head import HEAD
 from git.refs.headref import Head
 from git.refs.tag import TagReference
@@ -290,6 +291,7 @@ class PureReferencesMixin(ReferencesMixin):
 	HeadCls = Head
 	ReferenceCls = Reference
 	HEADCls = HEAD
+	CommitCls = Commit
 	#} END configuration
 	
 	def resolve(self, name):
@@ -313,6 +315,30 @@ class PureReferencesMixin(ReferencesMixin):
 	def tag(self, name):
 		return self.tags[name]
 		
+	
+	def commit(self, rev=None):
+		if rev is None:
+			return self.head.commit
+		else:
+			return self.resolve_object(str(rev)+"^0")
+		#END handle revision
+		
+	def iter_trees(self, *args, **kwargs):
+		return ( c.tree for c in self.iter_commits(*args, **kwargs) )
+
+	def tree(self, rev=None):
+		if rev is None:
+			return self.head.commit.tree
+		else:
+			return self.resolve_object(str(rev)+"^{tree}")
+
+	def iter_commits(self, rev=None, paths='', **kwargs):
+		if rev is None:
+			rev = self.head.commit
+		
+		return self.CommitCls.iter_items(self, rev, paths, **kwargs)
+
+		
 	@property
 	def head(self):
 		return self.HEADCls(self,'HEAD')