MapMaker Design Pattern?

Question

I was impressed by google's MapMaker design.I would like to know what is the name of the pattern that is used here ?

( What i think is it's somewhat like decorator pattern but in which we don't have to wrap the object in other object to extend the functionality,but I can't figure out exactly what sort of pattern it is. )

MapMaker Object Creation:-

ConcurrentMap<Key, Graph> graphs = new MapMaker()
      .concurrencyLevel(32)
      .softKeys()
      .weakValues()
      .expiration(30, TimeUnit.MINUTES)
      .makeComputingMap(
          new Function<Key, Graph>() {
            public Graph apply(Key key) {
              return createExpensiveGraph(key);
            }
          });

To learn about design patterns by real world examples, you may find [this answer](http://stackoverflow.com/questions/1673841/examples-of-gof-design-patterns/2707195#2707195) useful. — BalusC, Oct 01 '10 at 12:49
You'll never miss an opportunity to point that one out, eh? :-) Granted: it *is* one of the best java answers on this site... — Sean Patrick Floyd, Oct 01 '10 at 13:04

score 14 · Accepted Answer · answered Oct 01 '10 at 09:49

14

It is a Builder with a Fluent api

answered Oct 01 '10 at 09:49

Gareth Davis

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score 5 · Answer 2 · answered Oct 01 '10 at 09:51

5

Builder and/or Fluent Interface

http://en.wikipedia.org/wiki/Fluent_interface

http://en.wikipedia.org/wiki/Builder_pattern

answered Oct 01 '10 at 09:51

mindas

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Stan Kurilin · Answer 3 · 2010-10-01T12:41:23.843

1

I think it's kind of Builder.

edited Oct 01 '10 at 12:41

answered Oct 01 '10 at 09:50

Stan Kurilin

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MapMaker Design Pattern?

3 Answers3