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[TableViewer] Browsing large models [message #447638]

Wed, 15 December 2004 16:55

Marcus Olk

Messages: 130
Registered: July 2009

Senior Member

Hi folks.

I was wondering how you guys implement your GUIs for browsing
large model data sets in a Table widget using a TableViewer?

I managed to combine the Table widget with a TableViewer
and the required label an content providers. This works fine
for small amounts of data. So what's the plan for large data sets?

If one has to display a large set of rows she will soon notice
that there's a need for some kind of 'chunk mode' for displaying
just a 'hot window' on the whole set of data.

We implemented a corresponding control set in C++ already and
would like to avoid rewriting the whole stuff in Java?

Is there an appropriate SWT/JFace solution available, yet?
Are there any commmercial products dealing with this issue?

Cheers,
Marcus

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Re: [TableViewer] Browsing large models [message #447650 is a reply to message #447638]

Wed, 15 December 2004 22:29

Chris Audley

Messages: 41
Registered: July 2009

Member

The SWT mechanism for doing what you describe is virtual table. You
create a Table with the SWT.VIRTUAL style.

http://dev.eclipse.org/viewcvs/index.cgi/org.eclipse.swt.sni ppets/src/org/eclipse/swt/snippets/Snippet144.java?rev=HEAD& amp;content-type=text/vnd.viewcvs-markup

Cheers
Chris

Marcus Olk wrote:
> Hi folks.
>
> I was wondering how you guys implement your GUIs for browsing
> large model data sets in a Table widget using a TableViewer?
>
> I managed to combine the Table widget with a TableViewer
> and the required label an content providers. This works fine
> for small amounts of data. So what's the plan for large data sets?
>
> If one has to display a large set of rows she will soon notice
> that there's a need for some kind of 'chunk mode' for displaying
> just a 'hot window' on the whole set of data.
>
> We implemented a corresponding control set in C++ already and
> would like to avoid rewriting the whole stuff in Java?
>
> Is there an appropriate SWT/JFace solution available, yet?
> Are there any commmercial products dealing with this issue?
>
> Cheers,
> Marcus

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Re: [TableViewer] Browsing large models [message #447655 is a reply to message #447650]

Thu, 16 December 2004 06:27

Marcus Olk

Messages: 130
Registered: July 2009

Senior Member

Chris,

Chris Audley wrote:
> The SWT mechanism for doing what you describe is virtual table. You
> create a Table with the SWT.VIRTUAL style.

So, I'll have to use the SWT Table widget directly and can't use
the JFace TableViewer? I've seen SWT.VIRTUAL mentioned before but
couldn't see any effect when using a TableViewer. Are there any
plans to make the TableViewer supporting SWT.VIRTUAL?

Are there any thirdparty implementations solving this, yet?

Thanks,
Marcus

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Re: [TableViewer] Browsing large models [message #447702 is a reply to message #447650]

Thu, 16 December 2004 09:54

Marcus Olk

Messages: 130
Registered: July 2009

Senior Member

Chris Audley wrote:
> The SWT mechanism for doing what you describe is virtual table. You
> create a Table with the SWT.VIRTUAL style.

The virtual table mode requires the total amount of table items
to be shown before you create the widget (Table.setItemCount()), right?
If you want to quickly display the first 20 rows of a dataset of unknown
size, how are going to do this? Are repetitive calls of
Table.setItemCount() legal?

Marcus

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Re: [TableViewer] Browsing large models [message #447716 is a reply to message #447702]

Thu, 16 December 2004 15:40

Steve Northover

Messages: 1636
Registered: July 2009

Senior Member

Yes.

"Marcus Olk" <molk@comosoft.de> wrote in message
news:cprm10$ng1$1@www.eclipse.org...
> Chris Audley wrote:
> > The SWT mechanism for doing what you describe is virtual table. You
> > create a Table with the SWT.VIRTUAL style.
>
> The virtual table mode requires the total amount of table items
> to be shown before you create the widget (Table.setItemCount()), right?
> If you want to quickly display the first 20 rows of a dataset of unknown
> size, how are going to do this? Are repetitive calls of
> Table.setItemCount() legal?
>
> Marcus

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Re: [TableViewer] Browsing large models [message #448063 is a reply to message #447638]

Thu, 30 December 2004 03:04

Eclipse User

Originally posted by: thomas

Maybe you've already found something for your needs, but i happened upon
this just after reading your post and it seemed to address your need:

(spam URL removed by droy)

excerpt:

Includes powerful new SWT controls needed for data-aware applications:
a.. A Virtual Table control:
- allows full in-place editing using SWT controls
- only requests data it actually displays
b.. Date entry control
c.. Radio button group
d.. Check-box group

T

"Marcus Olk" wrote :
> Hi folks.
>
> I was wondering how you guys implement your GUIs for browsing
> large model data sets in a Table widget using a TableViewer?
>
> I managed to combine the Table widget with a TableViewer
> and the required label an content providers. This works fine
> for small amounts of data. So what's the plan for large data sets?
>
> If one has to display a large set of rows she will soon notice
> that there's a need for some kind of 'chunk mode' for displaying
> just a 'hot window' on the whole set of data.
>
> We implemented a corresponding control set in C++ already and
> would like to avoid rewriting the whole stuff in Java?
>
> Is there an appropriate SWT/JFace solution available, yet?
> Are there any commmercial products dealing with this issue?
>
> Cheers,
> Marcus

[Updated on: Mon, 03 May 2010 13:17] by Moderator

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