Provide SingleValueMap
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Key: COLLECTIONS-301
URL: https://issues.apache.org/jira/browse/COLLECTIONS-301
Project: Commons Collections
Issue Type: New Feature
Components: Map
Affects Versions: 3.2
Reporter: Michael
I miss an efficient implementation of a SingleValueMap.
The idea goes as follows:
Map<String, String> map = new SingleValueMap<String, String>();
map.put("hello","greeting");
map.put("hola","greeting");
map.put("hallo",greeting");
a normal map would now hold three copies of "greeting". A SingleValueMap would
contain only one copy of this value. All keys would map to one copy,
identically to a N:1 relaton.
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