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add interface as additional selection argument for retrieving relation set values

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git-svn-id: svn://svn.cy55.de/Zope3/src/loops/trunk@3285 fd906abe-77d9-0310-91a1-e0d9ade77398
This commit is contained in:
helmutm 2009-03-20 14:17:15 +00:00
parent a5c44e979c
commit 0b734d550f
1 changed files with 19 additions and 4 deletions
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23
common.py
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@ -311,13 +311,14 @@ class RelationSet(object):
langInfo = None langInfo = None
def __init__(self, context, predicateName): def __init__(self, context, predicateName, interface=None):
self.adapted = context self.adapted = context
if isinstance(context, AdapterBase): if isinstance(context, AdapterBase):
self.context = context.context self.context = context.context
else: else:
self.context = context self.context = context
self.predicateName = predicateName self.predicateName = predicateName
self.interface = interface
@Lazy @Lazy
def loopsRoot(self): def loopsRoot(self):
@ -349,7 +350,20 @@ class ParentRelationSet(RelationSet):
if self.adapted.__is_dummy__: if self.adapted.__is_dummy__:
return return
for c in self.context.getParents([self.predicate]): for c in self.context.getParents([self.predicate]):
yield adapted(c, langInfo=self.langInfo) a = adapted(c, langInfo=self.langInfo)
if self.interface is None or self.interface.providedBy(a):
yield a
def getRelations(self, check=None):
if self.adapted.__is_dummy__:
return
for r in self.context.getParentRelations([self.predicate]):
if check is None or check(r):
yield r
def getRelated(self, check=None):
for r in self.getRelations(check):
yield adapted(r.first, langInfo=self.langInfo)
class ChildRelationSet(RelationSet): class ChildRelationSet(RelationSet):
@ -391,13 +405,14 @@ class TypeInstancesProperty(object):
class RelationSetProperty(object): class RelationSetProperty(object):
def __init__(self, predicateName): def __init__(self, predicateName, interface=None):
self.predicateName = predicateName self.predicateName = predicateName
self.interface = interface
def __get__(self, inst, class_=None): def __get__(self, inst, class_=None):
if inst is None: if inst is None:
return self return self
return self.factory(inst, self.predicateName) return self.factory(inst, self.predicateName, self.interface)
def __set__(self, inst, value): def __set__(self, inst, value):
rs = self.factory(inst, self.predicateName) rs = self.factory(inst, self.predicateName)