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Maxime Nay commented on COLLECTIONS-521:
----------------------------------------
MultiKeyMap<String, Long> map = new MultiKeyMap<String, Long>();
map.put("test", null, 2L) is indeed throwing NPE:
java.lang.NullPointerException
at org.apache.commons.collections4.map.MultiKeyMap.isEqualKey(MultiKeyMap.java:249)
at org.apache.commons.collections4.map.MultiKeyMap.put(MultiKeyMap.java:180)
> Typo in MultiMapKey's isEqualKey(entry, key1, key2)
> ---------------------------------------------------
>
> Key: COLLECTIONS-521
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-521
> Project: Commons Collections
> Issue Type: Bug
> Reporter: Maxime Nay
>
> I believe there is a typo line 252 in MultiKeyMap.
> return
> multi.size() == 2 &&
> (key1 == multi.getKey(0) || key1 != null && key1.equals(multi.getKey(0)))
&&
> (key2 == multi.getKey(1) || key1 != null && key2.equals(multi.getKey(1)));
> should be:
> return
> multi.size() == 2 &&
> (key1 == multi.getKey(0) || key1 != null && key1.equals(multi.getKey(0)))
&&
> (key2 == multi.getKey(1) || key2 != null && key2.equals(multi.getKey(1)));
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