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Commit 0ffaf172 authored by Ayush Tiwari's avatar Ayush Tiwari
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erp5_catalog: Refactor _catalogObject List to remove the need to copy and patch 

Create FilterDict and Filter class which would be used to imitate the behaviour
of filter_dict for Catalog.
parent 99230fae
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Showing with 110 additions and 326 deletions
product/ERP5Catalog/Document/ERP5Catalog.py
View file @ 0ffaf172
......@@ -63,6 +63,92 @@ def manage_addERP5Catalog(self, id, title,
REQUEST['RESPONSE'].redirect( 'manage_main' )
return c
class Filter(object):
"""
Class to act as filter object for filterable methods.
Added to keep consistency between how filter objects used to behave earlier
with old SQL Catalog and with the current ERP5 Catalog.
Generally, we do have 5 fixed keys, aka properties for catalog methods.
"""
def __init__(self, method):
self._method = method
def __getitem__(self, key):
#XXX: Temporary hardcode for list_type objects
if key in ('type', 'expression_cache_key'):
return self._method.getPropertyList(key)
return self._method.getProperty(key)
def get(self, key, default=None):
try:
return self.__getitem__(key)
except KeyError: return default
def __setitem__(self, key, value):
self._method._setProperty(key, value)
def __iter__(self):
return iter(('type', 'expression_cache_key', 'expression', 'filtered', 'expression_instance'))
class FilterDict(object):
"""
Class to act as object everytime we need to use filter_dict as a
dictionary. It doesn't change the fact that the filter properties
are still the properties of catalog methods(SQL Method and Python Scripts).
One of important need of this class is it reduces a lot of copy and patch
which we might had to do to functions in ZSQLCatalog.SQLCatalog.Catalog
class.
Also, as in old SQLCatalog the filter_dict is used as an attribute
of Catalog, but now we have moved it to properties of method,
this class help in keeping the consistency between the old filter_dict
and new filter_dict.
For example:
Old SQL Catalog:
filter_dict = self._getFilterDict() == self.filter_dict == {Persistent Object}
ERP5 Catlaog:
filter_dict = self._getFilterDict() == FilterDict(class) == {Object of this class}
Now, both the filter_dict would have same behaviour without having any impact
on performance or so. The major use of this is in _catalogObjectList, where
we get Filter object, which is easily accessible via __getitem__ for this
class.
"""
def __init__(self, catalog):
self._catalog = catalog
def __getitem__(self, key):
return Filter(self._catalog._getOb(key))
def keys(self):
return self._catalog.getFilterDict().keys()
def has_key(self, method_id):
return method_id in self.keys()
def __setitem__(self, key, item):
filter_ = self.__getitem__(key)
for k, v in item.items():
filter_.__setitem__(k, v)
def get(self, key, default=None):
if key in self:
return self.__getitem__(key)
else:
return default
def __iter__(self):
return iter(self.keys())
def __contains__(self, item):
return item in self.keys()
class ERP5Catalog(Folder, Catalog):
"""
Catalog Folder inside ERP5 to store indexes
......@@ -207,327 +293,21 @@ class ERP5Catalog(Folder, Catalog):
+ '?portal_status_message=Reserve%20UIDs%20Cleared'
return REQUEST.RESPONSE.redirect(url)
def _catalogObjectList(self, object_list, method_id_list=None,
disable_cache=0, check_uid=1, idxs=None):
"""This is the real method to catalog objects.
This method overrides the method from SQLCatalog.Catalog, mainly because of
the changes being done in filter_dict, which now is dictionary of properties
of SQLMethod(s).
"""
LOG('ERP5Catalog', TRACE, 'catalogging %d objects' % len(object_list))
if idxs not in (None, []):
LOG('ERP5Catalog.ERP5Catalog:catalogObjectList', WARNING,
'idxs is ignored in this function and is only provided to be compatible with CMFCatalogAware.reindexCatalogObject.')
if not self.isIndexable():
return
# Reminder about optimization: It might be possible to issue just one
# query to get enought results to check uid & path consistency.
path_uid_dict = {}
uid_path_dict = {}
if check_uid:
path_list = []
path_list_append = path_list.append
uid_list = []
uid_list_append = uid_list.append
for object in object_list:
path = object.getPath()
if path is not None:
path_list_append(path)
uid = object.uid
if uid is not None:
uid_list_append(uid)
path_uid_dict = self.getUidDictForPathList(path_list=path_list)
uid_path_dict = self.getPathDictForUidList(uid_list=uid_list)
# This dict will store uids and objects which are verified below.
# The purpose is to prevent multiple objects from having the same
# uid inside object_list.
assigned_uid_dict = {}
for object in object_list:
uid = getattr(aq_base(object), 'uid', None)
# Several Tool objects have uid=0 (not 0L) from the beginning, but
# we need an unique uid for each object.
if uid is None or isinstance(uid, int) and uid == 0:
try:
object.uid = self.newUid()
except ConflictError:
raise
except:
raise RuntimeError, 'could not set missing uid for %r' % (object,)
elif check_uid:
if uid in assigned_uid_dict:
error_message = 'uid of %r is %r and ' \
'is already assigned to %s in catalog !!! This can be fatal.' % \
(object, uid, assigned_uid_dict[uid])
if not self.sql_catalog_raise_error_on_uid_check:
LOG("ERP5Catalog.catalogObjectList", ERROR, error_message)
else:
raise ValueError(error_message)
path = object.getPath()
index = path_uid_dict.get(path)
if index is not None:
if index < 0:
raise CatalogError, 'A negative uid %d is used for %s. Your catalog is broken. Recreate your catalog.' % (index, path)
if uid != index or isinstance(uid, int):
# We want to make sure that uid becomes long if it is an int
error_message = 'uid of %r changed from %r (property) to %r '\
'(catalog, by path) !!! This can be fatal' % (object, uid, index)
if not self.sql_catalog_raise_error_on_uid_check:
LOG("ERP5Catalog.catalogObjectList", ERROR, error_message)
else:
raise ValueError(error_message)
else:
# Make sure no duplicates - ie. if an object with different path has same uid, we need a new uid
# This can be very dangerous with relations stored in a category table (CMFCategory)
# This is why we recommend completely reindexing subobjects after any change of id
if uid in uid_path_dict:
catalog_path = uid_path_dict.get(uid)
else:
catalog_path = self.getPathForUid(uid)
#LOG('catalogObject', 0, 'uid = %r, catalog_path = %r' % (uid, catalog_path))
if catalog_path == "reserved":
# Reserved line in catalog table
lock = self.__class__._reserved_uid_lock
try:
lock.acquire()
uid_buffer = self.getUIDBuffer()
if uid_buffer is not None:
# This is the case where:
# 1. The object got an uid.
# 2. The catalog was cleared.
# 3. The catalog produced the same reserved uid.
# 4. The object was reindexed.
# In this case, the uid is not reserved any longer, but
# Catalog believes that it is still reserved. So it is
# necessary to remove the uid from the list explicitly.
try:
uid_buffer.remove(uid)
except ValueError:
pass
finally:
lock.release()
elif catalog_path == 'deleted':
# Two possible cases:
# - Reindexed object's path changed (ie, it or at least one of its
# parents was renamed) but unindexObject was not called yet.
# Reindexing is harmelss: unindexObject and then an
# immediateReindexObject will be called.
# - Reindexed object was deleted by a concurrent transaction, which
# committed after we got our ZODB snapshot of this object.
# Reindexing is harmless: unindexObject will be called, and
# cannot be executed in parallel thanks to activity's
# serialisation_tag (so we cannot end up with a fantom object in
# catalog).
# So we index object.
# We could also not index it to save the time needed to index, but
# this would slow down all regular case to slightly improve an
# exceptional case.
pass
elif catalog_path is not None:
# An uid conflict happened... Why?
# can be due to path length
if len(path) > MAX_PATH_LEN:
LOG('ERP5Catalog', ERROR, 'path of object %r is too long for catalog. You should use a shorter path.' %(object,))
LOG('ERP5Catalog', ERROR,
'uid of %r changed from %r to %r as old one is assigned'
' to %s in catalog !!! This can be fatal.' % (
object, uid, object.uid, catalog_path))
error_message = 'uid of %r is %r and ' \
'is already assigned to %s in catalog !!! This can be fatal.' \
% (object, uid, catalog_path)
if not self.sql_catalog_raise_error_on_uid_check:
LOG('ERP5Catalog', ERROR, error_message)
else:
raise ValueError(error_message)
uid = object.uid
assigned_uid_dict[uid] = object
if method_id_list is None:
method_id_list = self.sql_catalog_object_list
econtext = getEngine().getContext()
if disable_cache:
argument_cache = DummyDict()
else:
argument_cache = {}
with (noReadOnlyTransactionCache if disable_cache else
readOnlyTransactionCache)():
filter_dict = self.getFilterDict()
catalogged_object_list_cache = {}
for method_name in method_id_list:
# We will check if there is an filter on this
# method, if so we may not call this zsqlMethod
# for this object
expression = None
try:
filter = filter_dict[method_name]
method = getattr(self, method_name, None)
if filter['filtered']:
if filter.get('type'):
expression = Expression('python: context.getPortalType() in '
+ repr(tuple(filter['type'])))
LOG('ERP5Catalog', WARNING,
"Convert deprecated type filter for %r into %r expression"
% (method_name, expression.text))
method.setType = ()
method.setExpression(expression.text)
method.setExpressionInstance(expression)
else:
expression = filter['expression_instance']
except KeyError:
pass
if expression is None:
catalogged_object_list = object_list
else:
text = expression.text
catalogged_object_list = catalogged_object_list_cache.get(text)
if catalogged_object_list is None:
catalogged_object_list_cache[text] = catalogged_object_list = []
append = catalogged_object_list.append
old_context = new_context_search(text) is None
if old_context:
warnings.warn("Filter expression for %r (%r): using variables"
" other than 'context' is deprecated and slower."
% (method_name, text), DeprecationWarning)
expression_cache_key_list = filter.get('expression_cache_key', ())
expression_result_cache = {}
for object in object_list:
if expression_cache_key_list:
# Expressions are slow to evaluate because they are executed
# in restricted environment. So we try to save results of
# expressions by portal_type or any other key.
# This cache is built each time we reindex
# objects but we could also use over multiple transactions
# if this can improve performance significantly
# ZZZ - we could find a way to compute this once only
cache_key = tuple(object.getProperty(key) for key
in expression_cache_key_list)
try:
if expression_result_cache[cache_key]:
append(object)
continue
except KeyError:
pass
if old_context:
result = expression(self.getExpressionContext(object))
else:
econtext.setLocal('context', object)
result = expression(econtext)
if expression_cache_key_list:
expression_result_cache[cache_key] = result
if result:
append(object)
if not catalogged_object_list:
continue
#LOG('catalogObjectList', 0, 'method_name = %s' % (method_name,))
method = getattr(self, method_name)
if method.meta_type == "LDIF Method":
# Build the dictionnary of values
arguments = method.arguments_src.split()
elif method.meta_type == "ERP5 SQL Method":
arguments = method.getArgumentsSrc().split()
elif method.meta_type == "ERP5 Python Script":
arguments = \
method.func_code.co_varnames[:method.func_code.co_argcount]
else:
arguments = []
kw = {x: LazyIndexationParameterList(catalogged_object_list,
x, argument_cache)
for x in arguments}
# Alter/Create row
try:
#start_time = DateTime()
#LOG('catalogObjectList', DEBUG, 'kw = %r, method_name = %r' % (kw, method_name))
method(**kw)
#end_time = DateTime()
#if method_name not in profile_dict:
# profile_dict[method_name] = end_time.timeTime() - start_time.timeTime()
#else:
# profile_dict[method_name] += end_time.timeTime() - start_time.timeTime()
#LOG('catalogObjectList', 0, '%s: %f seconds' % (method_name, profile_dict[method_name]))
except ConflictError:
raise
except:
LOG('ERP5Catalog', WARNING, 'could not catalog objects %s with method %s' % (object_list, method_name),
error=sys.exc_info())
raise
if psyco is not None:
psyco.bind(_catalogObjectList)
def manage_exportProperties(self, REQUEST=None, RESPONSE=None):
"""
Export properties to an XML file.
"""
f = StringIO()
f.write('<?xml version="1.0"?>\n<CatalogData>\n')
property_id_list = self.propertyIds()
# Get properties and values
property_list = []
for property_id in property_id_list:
value = self.getProperty(property_id)
if value is not None:
property_list.append((property_id, value))
# Sort for easy diff
property_list.sort(key=lambda x: x[0])
for property in property_list:
property_id = property[0]
value = property[1]
if isinstance(value, basestring):
f.write(' <property id=%s type="str">%s</property>\n' % (quoteattr(property_id), escape(value)))
elif isinstance(value, (tuple, list)):
f.write(' <property id=%s type="tuple">\n' % quoteattr(property_id))
# Sort for easy diff
item_list = []
for item in value:
if isinstance(item, basestring):
item_list.append(item)
item_list.sort()
for item in item_list:
f.write(' <item type="str">%s</item>\n' % escape(str(item)))
f.write(' </property>\n')
# filter_dict is now properties of SQL Methods now.
# Outputting them here, juts for the comaptibility of results with ...
# ... ERP5Catalog.ERP5Catalog.Catalog object
filter_dict = self.getFilterDict()
if filter_dict:
filter_list = []
for filter_id in self.filter_dict.keys():
filter_definition = self.filter_dict[filter_id]
filter_list.append((filter_id, filter_definition))
# Sort for easy diff
filter_list.sort(key=lambda x: x[0])
for filter_item in filter_list:
filter_id = filter_item[0]
filter_def = filter_item[1]
if not filter_def['filtered']:
# If a filter is not activated, no need to output it.
continue
if not filter_def['expression']:
# If the expression is not specified, meaningless to specify it.
continue
f.write(' <filter id=%s expression=%s />\n' % (quoteattr(filter_id), quoteattr(filter_def['expression'])))
# For now, portal types are not exported, because portal types are too specific to each site.
f.write('</CatalogData>\n')
if RESPONSE is not None:
RESPONSE.setHeader('Content-type','application/data')
RESPONSE.setHeader('Content-Disposition',
'inline;filename=properties.xml')
return f.getvalue()
def _getFilterDict(self):
return FilterDict(self)
def _getCatalogMethodArgumentList(self, method):
if method.meta_type == "LDIF Method":
# Build the dictionnary of values
return method.arguments_src.split()
elif method.meta_type == "ERP5 SQL Method":
return method.getArgumentsSrc().split()
elif method.meta_type == "ERP5 Python Script":
return method.func_code.co_varnames[:method.func_code.co_argcount]
return ()
def _getCatalogMethod(self, method_name):
return self._getOb(method_name)
def manage_importProperties(self, file):
"""
......
product/ZSQLCatalog/SQLCatalog.py
View file @ 0ffaf172
......@@ -737,10 +737,11 @@ class Catalog(Folder,
f.write(' </property>\n')
# XXX Although filters are not properties, output filters here.
# XXX Ideally, filters should be properties in Z SQL Methods, shouldn't they?
if hasattr(self, 'filter_dict'):
filter_dict = self._getFilterDict()
if filter_dict:
filter_list = []
for filter_id in self.filter_dict.keys():
filter_definition = self.filter_dict[filter_id]
for filter_id in filter_dict.keys():
filter_definition = filter_dict[filter_id]
filter_list.append((filter_id, filter_definition))
# Sort for easy diff
filter_list.sort(key=lambda x: x[0])
......@@ -1601,7 +1602,7 @@ class Catalog(Folder,
with (noReadOnlyTransactionCache if disable_cache else
readOnlyTransactionCache)():
filter_dict = self.filter_dict
filter_dict = self._getFilterDict()
catalogged_object_list_cache = {}
for method_name in method_id_list:
# We will check if there is an filter on this
......@@ -1697,7 +1698,10 @@ class Catalog(Folder,
if psyco is not None:
psyco.bind(_catalogObjectList)
def _getCatalogMethodArgumentList(self, method):
def _getFilterDict(self):
return self.filter_dict
def _getCatalogMethodArgumentList(self, method_name):
if method.meta_type in ("Z SQL Method", "LDIF Method"):
# Build the dictionnary of values
return method.arguments_src.split()
......
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