From e3d5ecc57975b2a168bc436efd90bc3223f1b4e7 Mon Sep 17 00:00:00 2001
From: Zac Medico <zmedico@gentoo.org>
Date: Thu, 26 Oct 2006 08:10:35 +0000
Subject: [PATCH] Reverse the relationship between __contains__ and has_key in
 all cache classes since python handles the "in" operator more efficiently
 than a has_key method call.

svn path=/main/trunk/; revision=4821
---
 pym/cache/anydbm.py           | 2 +-
 pym/cache/flat_hash.py        | 2 +-
 pym/cache/flat_list.py        | 2 +-
 pym/cache/metadata_overlay.py | 2 +-
 pym/cache/sql_template.py     | 2 +-
 pym/cache/sqlite.py           | 2 +-
 pym/cache/template.py         | 4 ++--
 7 files changed, 8 insertions(+), 8 deletions(-)

diff --git a/pym/cache/anydbm.py b/pym/cache/anydbm.py
index 87e448f30..a4e0003d4 100644
--- a/pym/cache/anydbm.py
+++ b/pym/cache/anydbm.py
@@ -63,7 +63,7 @@ class database(fs_template.FsBased):
 	def iterkeys(self):
 		return iter(self.__db.keys())
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		return cpv in self.__db
 
 	def __del__(self):
diff --git a/pym/cache/flat_hash.py b/pym/cache/flat_hash.py
index d4c5930c7..a8adb2205 100644
--- a/pym/cache/flat_hash.py
+++ b/pym/cache/flat_hash.py
@@ -98,7 +98,7 @@ class database(fs_template.FsBased):
 				raise cache_errors.CacheCorruption(cpv, e)
 
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		return os.path.exists(os.path.join(self.location, cpv))
 
 
diff --git a/pym/cache/flat_list.py b/pym/cache/flat_list.py
index 65fe5a781..85efa4c02 100644
--- a/pym/cache/flat_list.py
+++ b/pym/cache/flat_list.py
@@ -82,7 +82,7 @@ class database(fs_template.FsBased):
 				raise cache_errors.CacheCorruption(cpv, e)
 
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		return os.path.exists(os.path.join(self._base, cpv))
 
 
diff --git a/pym/cache/metadata_overlay.py b/pym/cache/metadata_overlay.py
index 673ba8dff..9320b0938 100644
--- a/pym/cache/metadata_overlay.py
+++ b/pym/cache/metadata_overlay.py
@@ -55,7 +55,7 @@ class database(template.database):
 		else:
 			del self.db_rw[cpv]
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		try:
 			self[cpv] # validates whiteout when necessary
 		except KeyError:
diff --git a/pym/cache/sql_template.py b/pym/cache/sql_template.py
index 5c8af08f8..e635616e9 100644
--- a/pym/cache/sql_template.py
+++ b/pym/cache/sql_template.py
@@ -196,7 +196,7 @@ class SQLDatabase(template.database):
 		return self.con.fetchone()[0]
 
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		if not self.autocommits:
 			try:	self.commit()
 			except self._BaseError, e:
diff --git a/pym/cache/sqlite.py b/pym/cache/sqlite.py
index 571eff39b..6b1a3d323 100644
--- a/pym/cache/sqlite.py
+++ b/pym/cache/sqlite.py
@@ -200,7 +200,7 @@ class database(fs_template.FsBased):
 			self._db_table["packages"]["package_key"],
 			self._db_escape_string(cpv)))
 
-	def has_key(self, cpv):
+	def __contains__(self, cpv):
 		cursor = self._db_cursor
 		cursor.execute(" ".join(
 			["SELECT %s FROM %s" %
diff --git a/pym/cache/template.py b/pym/cache/template.py
index 565e7d2ab..a628b1161 100644
--- a/pym/cache/template.py
+++ b/pym/cache/template.py
@@ -89,7 +89,7 @@ class database(object):
 		raise NotImplementedError
 
 	def has_key(self, cpv):
-		raise NotImplementedError
+		return cpv in self
 
 	def keys(self):
 		return tuple(self.iterkeys())
@@ -114,7 +114,7 @@ class database(object):
 			raise NotImplementedError
 
 	def __contains__(self, cpv):
-		return self.has_key(cpv)
+		raise NotImplementedError
 
 	def get(self, k, x=None):
 		try:
-- 
2.26.2