[richfaces-issues] [JBoss JIRA] Created: (RF-9426) Check iteration state saving for facets of dataTable component

[Nick Belaevski (JIRA)]

Check iteration state saving for facets of dataTable component 
---------------------------------------------------------------

                 Key: RF-9426
                 URL: https://jira.jboss.org/browse/RF-9426
             Project: RichFaces
          Issue Type: Task
      Security Level: Public (Everyone can see)
          Components: component-tables, performance
    Affects Versions: 4.0.0.Milestone3
            Reporter: Nick Belaevski
            Assignee: Konstantin Mishin
             Fix For: 4.0.0.Milestone4


Here is the excerpt from the letter I've just received:

>>>> There is memory leak in UIDataAdaptorBase/rich:dataTable.
>>>> It affects:
>>>> - external filtering (input in "header" facet)
>>>> - embedded filtering ("filterBy" column attribute) - facet
>>>> "filterValueInput" is added internally
>>>>
>>>> Code in UIDataAdaptorBase#saveChildState:
>>>> itr = c.getFacets().values().iterator();
>>>> while (itr.hasNext()) {
>>>>    saveChildState(faces, (UIComponent) itr.next(), childState);
>>>> }
>>>>
>>>> Column facet state is saved in the view for each row.
>>>>
>>>> For the table with 500 rows 5 columns with filtering that resulst in
>>>> 350kB
>>>> of extra view size.
>>>> UIDataAdaptorBase$DataState size - 350 kB
>>>> There are 2500 (500 rows * 5 columns) instances of
>>>> UIDataAdaptorBase$SavedState.
>>>>
>>>> The same table without filtering does not have this issue and
>>>> UIDataAdaptorBase$DataState size is 1 kB.
>>>>

This affects 3.x. Please check if 4.x is affected by the problem. 

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