Bug 154755

Comment 1 Boris Bokowski 2006-08-22 16:55:16 EDT

Here is the current list of bugs:

97786 [Viewers] - Lazy Virtual Table View Test - duplicate items appear after delete.
144280 [Viewers] VIRTUAL TableViewer element removal doesn't work.
144406 [Viewers] Virtual TableViewer cache is not cleaned-up when removing items.

Comment 2 Boris Bokowski 2006-08-22 17:40:06 EDT

another one:
150096 [Viewers] Removing an object from a virtual table will NOT decrement the itemCount

Comment 3 Boris Bokowski 2006-08-22 18:02:42 EDT

Created attachment 48421 [details]
patch

Not solved yet: if you insert(element, index) in the middle of a VIRTUAL table, I believe the table is not updated correctly.

Tests are missing too.

Comment 4 Boris Bokowski 2008-10-01 15:19:20 EDT

Does anyone have time (and enough motivation) to drive this forward?

Without any help, I am not sure if I will end up doing anything for 3.5. So many things to do and so little time...

Comment 5 Dr. Christian Betz 2009-04-03 08:33:34 EDT

Hi!

I'm not sure whether or not you rate the following behaviour as "bug", but IMHO it's at least a misfeature. So please consider fixing it in future releases or make it dead clear in the documentation ;)

Testbed:
Source from http://wiki.eclipse.org/JFaceSnippets#Snippet030VirtualLazyTableViewer, running against org.eclipse.swt.widgets.Table (from bundle org.eclipse.swt.win32.win32.x86_3.5.0.v3525.jar)


Everything work's well with this "jface snippet". However, if you increasing row number massively (e.g. to 1000000), you get an OutOfMemoryError: Java heap space.

    private MyModel[] createModel() {
        MyModel[] elements = new MyModel[1000000];

        for (int i = 0; i < 1000000; i++) {
            elements[i] = new MyModel(i);
        }

        return elements;
    }


This is due to the fact that the TableItem[] items in org.eclipse.swt.widgets.Table is populated but does not respect the fact that invisible items need not be stored.

Thus, a VIRTUAL table need not to run into this memory leak, but the current implementation does.

Comment 6 Boris Bokowski 2009-11-26 09:55:13 EST

Hitesh is now responsible for watching bugs in the [Viewers] component area.

Comment 7 Eclipse Webmaster 2019-09-06 15:35:08 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet.

If you have further information on the current state of the bug, please add it. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.

Comment 8 Eclipse Genie 2021-10-11 16:09:36 EDT

This bug hasn't had any activity in quite some time. Maybe the problem got resolved, was a duplicate of something else, or became less pressing for some reason - or maybe it's still relevant but just hasn't been looked at yet. As such, we're closing this bug.

If you have further information on the current state of the bug, please add it and reopen this bug. The information can be, for example, that the problem still occurs, that you still want the feature, that more information is needed, or that the bug is (for whatever reason) no longer relevant.

--
The automated Eclipse Genie.