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performance improvement: only create new relation if necessary

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This commit is contained in:
Helmut Merz 2011-11-21 12:11:31 +01:00
parent 341371604c
commit 1d5b525a59
1 changed files with 13 additions and 9 deletions
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22
common.py
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@ -18,8 +18,6 @@
"""
Common stuff.
$Id$
"""
from zope import component
@ -350,23 +348,24 @@ class RelationSet(object):
@Lazy
def predicate(self):
#return self.conceptManager[self.predicateName]
return self.conceptManager.get(self.predicateName)
class ParentRelationSet(RelationSet):
def add(self, related, order=0, relevance=1.0):
#if isinstance(related, AdapterBase):
# related = related.context
related = baseObject(related)
existing = list(self.context.getParentRelations([self.predicate], related,
noSecurityCheck=self.noSecurityCheck))
if len(existing) == 1:
rel = existing[0]
if rel.order == order and rel.relevance == relevance:
return
self.context.deassignParent(related, [self.predicate], # avoid duplicates
noSecurityCheck=self.noSecurityCheck)
self.context.assignParent(related, self.predicate, order, relevance)
def remove(self, related):
#if isinstance(related, AdapterBase):
# related = related.context
self.context.deassignParent(baseObject(related), [self.predicate])
def __iter__(self):
@ -396,8 +395,13 @@ class ParentRelationSet(RelationSet):
class ChildRelationSet(RelationSet):
def add(self, related, order=0, relevance=1.0):
if isinstance(related, AdapterBase):
related = related.context
related = baseObject(related)
existing = list(self.context.getChildRelations([self.predicate], related,
noSecurityCheck=self.noSecurityCheck))
if len(existing) == 1:
rel = existing[0]
if rel.order == order and rel.relevance == relevance:
return
self.context.deassignChild(related, [self.predicate]) # avoid duplicates
self.context.assignChild(related, self.predicate, order, relevance)