From 3b08c21101b0801d7c5d6c145a27bef5cd42078c Mon Sep 17 00:00:00 2001
From: Marius Mauch <genone@gentoo.org>
Date: Thu, 25 Jan 2007 15:49:26 +0000
Subject: Namespace sanitizing, step 1

svn path=/main/trunk/; revision=5778
---
 pym/cache/metadata_overlay.py | 105 ------------------------------------------
 1 file changed, 105 deletions(-)
 delete mode 100644 pym/cache/metadata_overlay.py

(limited to 'pym/cache/metadata_overlay.py')

diff --git a/pym/cache/metadata_overlay.py b/pym/cache/metadata_overlay.py
deleted file mode 100644
index d82ba96f8..000000000
--- a/pym/cache/metadata_overlay.py
+++ /dev/null
@@ -1,105 +0,0 @@
-# Copyright 1999-2006 Gentoo Foundation
-# Distributed under the terms of the GNU General Public License v2
-# $Header: $
-
-import time
-if not hasattr(__builtins__, "set"):
-	from sets import Set as set
-from cache import template
-from cache.cache_errors import CacheCorruption
-from cache.flat_hash import database as db_rw
-from cache.metadata import database as db_ro
-
-class database(template.database):
-
-	serialize_eclasses = False
-
-	def __init__(self, location, label, auxdbkeys, db_rw=db_rw, db_ro=db_ro,
-		*args, **config):
-		super_config = config.copy()
-		super_config.pop("gid", None)
-		super(database, self).__init__(location, label, auxdbkeys,
-			*args, **super_config)
-		self.db_rw = db_rw(location, label, auxdbkeys, **config)
-		self.commit = self.db_rw.commit
-		self.autocommits = self.db_rw.autocommits
-		if isinstance(db_ro, type):
-			ro_config = config.copy()
-			ro_config["readonly"] = True
-			self.db_ro = db_ro(label, "metadata/cache", auxdbkeys, **ro_config)
-		else:
-			self.db_ro = db_ro
-
-	def __getitem__(self, cpv):
-		"""funnel whiteout validation through here, since value needs to be fetched"""
-		try:
-			value = self.db_rw[cpv]
-		except KeyError:
-			return self.db_ro[cpv] # raises a KeyError when necessary
-		except CacheCorruption:
-			del self.db_rw[cpv]
-			return self.db_ro[cpv] # raises a KeyError when necessary
-		if self._is_whiteout(value):
-			if self._is_whiteout_valid(cpv, value):
-				raise KeyError(cpv)
-			else:
-				del self.db_rw[cpv]
-				return self.db_ro[cpv] # raises a KeyError when necessary
-		else:
-			return value
-
-	def _setitem(self, name, values):
-		value_ro = self.db_ro.get(name, None)
-		if value_ro is not None and \
-			self._are_values_identical(value_ro, values):
-			# we have matching values in the underlying db_ro
-			# so it is unnecessary to store data in db_rw
-			try:
-				del self.db_rw[name] # delete unwanted whiteout when necessary
-			except KeyError:
-				pass
-			return
-		self.db_rw[name] = values
-
-	def _delitem(self, cpv):
-		value = self[cpv] # validates whiteout and/or raises a KeyError when necessary
-		if self.db_ro.has_key(cpv):
-			self.db_rw[cpv] = self._create_whiteout(value)
-		else:
-			del self.db_rw[cpv]
-
-	def __contains__(self, cpv):
-		try:
-			self[cpv] # validates whiteout when necessary
-		except KeyError:
-			return False
-		return True
-
-	def iterkeys(self):
-		s = set()
-		for cpv in self.db_rw.iterkeys():
-			if self.has_key(cpv): # validates whiteout when necessary
-				yield cpv
-			# set includes whiteouts so they won't be yielded later
-			s.add(cpv)
-		for cpv in self.db_ro.iterkeys():
-			if cpv not in s:
-				yield cpv
-
-	def _is_whiteout(self, value):
-		return value["EAPI"] == "whiteout"
-
-	def _create_whiteout(self, value):
-		return {"EAPI":"whiteout","_eclasses_":value["_eclasses_"],"_mtime_":value["_mtime_"]}
-
-	def _is_whiteout_valid(self, name, value_rw):
-		try:
-			value_ro = self.db_ro[name]
-			return self._are_values_identical(value_rw,value_ro)
-		except KeyError:
-			return False
-
-	def _are_values_identical(self, value1, value2):
-		if long(value1["_mtime_"]) != long(value2["_mtime_"]):
-			return False
-		return value1["_eclasses_"] == value2["_eclasses_"]
-- 
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