X-Git-Url: https://scm.cri.minesparis.psl.eu/git/Photo.git/blobdiff_plain/b0a7e10b4f32cf74864bb53268ca4d3080f23bc0..6c41809185e322ce2d30e98234f71144f78f06c0:/cache.py

diff --git a/cache.py b/cache.py
deleted file mode 100755
index ab41afd..0000000
--- a/cache.py
+++ /dev/null
@@ -1,157 +0,0 @@
-# -*- coding: utf-8 -*-
-#######################################################################################
-#   Photo is a part of Plinn - http://plinn.org                                       #
-#   Copyright (C) 2008  Benoît PIN <benoit.pin@ensmp.fr>                              #
-#                                                                                     #
-#   This program is free software; you can redistribute it and/or                     #
-#   modify it under the terms of the GNU General Public License                       #
-#   as published by the Free Software Foundation; either version 2                    #
-#   of the License, or (at your option) any later version.                            #
-#                                                                                     #
-#   This program is distributed in the hope that it will be useful,                   #
-#   but WITHOUT ANY WARRANTY; without even the implied warranty of                    #
-#   MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE.  See the                     #
-#   GNU General Public License for more details.                                      #
-#                                                                                     #
-#   You should have received a copy of the GNU General Public License                 #
-#   along with this program; if not, write to the Free Software                       #
-#   Foundation, Inc., 51 Franklin Street, Fifth Floor, Boston, MA  02110-1301, USA.   #
-#######################################################################################
-""" Memoization utils
-
-
-
-"""
-
-import inspect
-from BTrees.OOBTree import OOBTree
-
-def memoizedmethod(*indexes, **options) :
-	""" Used as decorator, this function stores result
-		of method m inside self._methodResultsCache or
-		self._v__methodResultsCache if volatile.
-		This decorator may be used inside a class which provides
-		a mapping object named _methodResultsCache and / or
-		_v__methodResultsCache.
-		
-		example :
-		
-		1 - simple metdhod memoization
-		
-		@memoizedmethod()
-		def methodWithNoParameters(self): pass
-		
-		2 - indexed memoisation:
-		Parameters names are passed to memoizedmethod are
-		evaluated to construct an indexed cache.
-		Names must be a subset of the memoized method signature.
-		
-		@memoizedmethod('arg1', 'arg2')
-		def methodWithParameters(self, arg1, arg2=None): pass
-	"""
-	volatile = options.get('volatile', False)
-	cacheVarName = '_methodResultsCache'
-	if volatile==True :
-		cacheVarName = '_v_%s' % cacheVarName
-	
-	def makeMemoizedMethod(m) :
-		methodname = m.__name__
-		
-		if not indexes :
-			def memoizedMethod(self) :
-				if not hasattr(self, cacheVarName) :
-					setattr(self, cacheVarName, OOBTree())
-				cache = getattr(self, cacheVarName)
-				if cache.has_key(methodname) :
-					return cache[methodname]
-				else :
-					res = m(self)
-					cache[methodname] = res
-					return res
-
-			memoizedMethod.__name__ = methodname
-			memoizedMethod.__doc__ = m.__doc__
-			return memoizedMethod
-		
-		else :
-			args, varargs, varkw, defaults = inspect.getargspec(m)
-			args = list(args)
-			if defaults is None :
-				defaults = []
-			mandatoryargs = args[1:-len(defaults)]
-			optargs = args[-len(defaults):]
-			defaultValues = dict(zip([name for name in args[-len(defaults):]], [val for val in defaults]))
-			
-			indexPositions = []
-			for index in indexes :
-				try :
-					indexPositions.append((index, args.index(index)))
-				except ValueError :
-					raise ValueError("%r argument is not in signature of %r" % (index, methodname))
-			
-			if indexPositions :
-				indexPositions.sort(lambda a, b : cmp(a[1], b[1]))
-			
-			indexPositions = tuple(indexPositions)
-				
-			
-			def memoizedMethod(self, *args, **kw) :
-				# test if m if called by ZPublished
-				if len(args) < len(mandatoryargs) and hasattr(self, 'REQUEST') :
-					assert not kw
-					args = list(args)
-					get = lambda name : self.REQUEST[name]
-					for name in mandatoryargs :
-						try :
-							args.append(get(name))
-						except KeyError :
-							exactOrAtLeast = defaults and 'exactly' or 'at least'
-							raise TypeError('%(methodname)s takes %(exactOrAtLeast)s %(mandatoryArgsLength)d argument (%(givenArgsLength)s given)' % \
-											{ 'methodname': methodname
-											, 'exactOrAtLeast': exactOrAtLeast
-											, 'mandatoryArgsLength': len(mandatoryargs)
-											, 'givenArgsLength': len(args)})
-					
-					for name in optargs :
-						get = self.REQUEST.get
-						args.append(get(name, defaultValues[name]))
-
-					args = tuple(args)
-				
-				if not hasattr(self, cacheVarName) :
-					setattr(self, cacheVarName, OOBTree())
-				cache = getattr(self, cacheVarName)
-				if not cache.has_key(methodname) :
-					cache[methodname] = OOBTree()
-				
-				cache = cache[methodname]
-				index = aggregateIndex(indexPositions, args)
-				
-				if cache.has_key(index) :
-					return cache[index]
-				else :
-					res = m(self, *args, **kw)
-					cache[index] = res
-					return res
-
-			memoizedMethod.__name__ = methodname
-			memoizedMethod.__doc__ = m.__doc__
-			return memoizedMethod
-
-	return makeMemoizedMethod
-
-def aggregateIndex(indexPositions, args):
-	'''
-	Returns the index to be used when looking for or inserting
-	a cache entry.
-	view_name is a string.
-	local_keys is a mapping or None.
-	'''
-	
-	agg_index = []
-	
-	for name, pos in indexPositions :
-		val = args[pos-1]
-		agg_index.append((name, str(val)))
-	
-	return tuple(agg_index)