Adrian Nistor created COLLECTIONS-472:
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Summary: wasted work in AbstractMapBag.containsAll()
Key: COLLECTIONS-472
URL: https://issues.apache.org/jira/browse/COLLECTIONS-472
Project: Commons Collections
Issue Type: Bug
Components: Bag
Affects Versions: 3.2.1
Environment: any
Reporter: Adrian Nistor
Attachments: patch.diff
The problem appears in version 3.2.1 and in revision 1489197. I
attached a one-line patch that fixes it.
In method "AbstractMapBag.containsAll", the loop over
"other.uniqueSet()" should return immediately after "result" becomes
"false", because "result = result && contains;" can never become
"true" again. All the iterations after "result" becomes "false" do
not perform any useful work, at best they just set "result" again to
"false".
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