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add parameter usePredicateIndex to getRelations()

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This commit is contained in:
zope 2021-08-07 11:44:01 +02:00
parent bd1aa11beb
commit 1629defe3d
1 changed files with 17 additions and 14 deletions
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7
relation/registry.py
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@ -227,7 +227,8 @@ class IndexableRelationAdapter(object):
# convenience functions:
def getRelations(first=None, second=None, third=None, relationships=None):
def getRelations(first=None, second=None, third=None, relationships=None,
usePredicateIndex=False):
""" Return a sequence of relations matching the query specified by the
parameters.
@ -241,7 +242,9 @@ def getRelations(first=None, second=None, third=None, relationships=None):
if third is not None: query['third'] = third
if not relationships:
return registry.query(**query)
else:
if len(relationships) == 1 and usePredicateIndex:
query['relationship'] = relationships[0]
return registry.query(**query)
predicates = []
for r in relationships:
if hasattr(r, 'predicate'):