[perf] _DeltaList: use ArrayList as parent
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Key: MYFACES-3435
URL: https://issues.apache.org/jira/browse/MYFACES-3435
Project: MyFaces Core
Issue Type: Improvement
Components: General
Affects Versions: 2.0.12-SNAPSHOT, 2.1.6-SNAPSHOT
Reporter: Martin Kočí
Assignee: Martin Kočí
Priority: Minor
Two internal classes _DeltaList in API:
1) now use delegation pattern, but are always initialized with an ArrayList
instance -> use inheritance and ArrayList as parent -> improvement in memory
area, reduces number of GCed object in one request/response of (_DeltaList
instances/2)
2) initialize expected size of _DeltaList (for example, number of validators
per one component is perhaps never 10, use: new _DeltaList(5))
3) use indexes in 'for' instead of iterator (java.util.RandomAccess) ->
improvement in performance
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