Yes a quick search :
http://stackoverflow.com/questions/2889777/difference-between-hashmap-linkedhashmap-and-treemap
After I'm not understand exaclty the best way to use each :)
Nicolas
Le 28/03/2015 12:46, Adrian Crum a écrit :
The reason different implementations are used is because the
requirements are different. A HashMap is not always the correct Map
implementation to use.
Adrian Crum
Sandglass Software
www.sandglass-software.com
On 3/28/2015 11:28 AM, Taher Alkhateeb wrote:
Hi Adrian,
Would you not find it useful especially for those not experienced in
data structures and algorithms not to worry about picking the right
implementation for a list, map, set, tree or any other data structure
by defaulting to what the factory would yield? Furthermore, let's say
you dislike the HashMap that everyone is using and would prefer a
different implementation. Would it not be a lot faster to change that
in one place instead of the thousands upon thousands of sprinkled new
instantiations?
I am suggesting a factory just to have sanity and consistency. In
fact, when looking at the source code I see people using different
implementations of the interfaces in different places!
Taher Alkhateeb
----- Original Message -----
From: "Adrian Crum" <adrian.c...@sandglass-software.com>
To: dev@ofbiz.apache.org
Sent: Saturday, 28 March, 2015 1:40:31 PM
Subject: Re: Proposal to introduce factory pattern to java collections
Personally, I am opposed to making simple things like this overly
complicated. It is unlikely the Java collections API will change enough
to warrant a factory for every collection type.
Javolution was used in Java 1.4 to reduce the latency caused by garbage
collection. That is not a problem with JREs >= 1.5, so we don't need the
library any more.
Adrian Crum
Sandglass Software
www.sandglass-software.com
On 3/28/2015 10:01 AM, Taher Alkhateeb wrote:
Hi All,
The move from javolution to the collections API built in to java
proves to be painful. To avoid such things in the future and to
reduce the "new" keyword clutter in the code I suggest we create
factories for all collections. This way we we can also enhance the
collections in the future with any ofbiz specific code. This is also
a best practice in terms of design patterns.
I would like to have opinions on whether this is a wanted /
acceptable feature so I can create a JIRA accordingly. Your opinions
are appreciated.
Taher Alkhateeb.
