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https://issues.apache.org/jira/browse/COLLECTIONS-250?page=com.atlassian.jira.plugin.system.issuetabpanels:all-tabpanel
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James Carman resolved COLLECTIONS-250.
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Resolution: Invalid
Assignee: James Carman
I believe we have established that this is the desired functionality. Changing
it now would break other code which relies upon the existing behavior.
> containsKey on MultiHashMap seems incorrect
> -------------------------------------------
>
> Key: COLLECTIONS-250
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-250
> Project: Commons Collections
> Issue Type: Bug
> Components: Map
> Affects Versions: 3.1, 3.2
> Reporter: Nikhil G. Daddikar
> Assigned To: James Carman
> Priority: Critical
>
> MultiHashMap m = new MultiHashMap();
> m.putAll("key", Collections.EMPTY_LIST);
> System.out.println(m.containsKey("key"))
> It says false, when it should have printed true.
> The problem is that the code in MultiHashMap and even MultiValueMap has in
> putAll():
> if (values == null || values.size() == 0)
> {
> return false;
> }
> This means that they key is never being entered into the Map. This is causing
> a huge problem because the behaviour has changed.
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