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https://issues.apache.org/jira/browse/COLLECTIONS-439?page=com.atlassian.jira.plugin.system.issuetabpanels:comment-tabpanel&focusedCommentId=13637248#comment-13637248
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Thomas Neidhart commented on COLLECTIONS-439:
---------------------------------------------
In fact, this bag would be very similar to a MultiValueMap which decorates a
TreeMap:
{noformat}
MultiValueMap<String, String> map =
MultiValueMap.<String, String>multiValueMap(new TreeMap<String,
Collection<String>>(comparator));
{noformat}
The Bag interface would be more convenient to use, e.g. instead of calling
put(obj, obj), you could do add(obj).
> TreeBag with comparator does not store non-key duplicates.
> ----------------------------------------------------------
>
> Key: COLLECTIONS-439
> URL: https://issues.apache.org/jira/browse/COLLECTIONS-439
> Project: Commons Collections
> Issue Type: Improvement
> Components: Bag
> Affects Versions: 3.2.1
> Reporter: Claude Warren
> Fix For: 4.0
>
> Attachments: COLLECTIONS-439.tar.gz, SortedBag.java
>
>
> When storing objects that are sorted by a Comparator, if the differences in
> the objects are not in the comparator the same version of the object is
> returned. I expected that the sorted bag would work like a DB table with a
> non-unique key -- ordered but duplicate only determined by Object.equals().
> I have implemented this type of bag using a TreeMap of List. My
> implementation uses the Jena ExtendedIterator to make building the iterator()
> and array() methods easier.
> Will attach the code.
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