IMO, there are various tricks to handle a few thousand rows if the renderers are simple. For example, feeding in rows with a timer. If the computer can handle the memory required for a few thousand renderers the main issue is the time to create and render for the first time.
It is when you get out to 10,000 rows or the renderers are complex/slow that it doesn't make sense to keep every renderer in memory and that's why the complexity goes up. Also, schedule-wise, you might start with 5 now and then take more time to work on 7 or 8. HTH, -Alex On 4/30/20, 8:33 AM, "Piotr Zarzycki" <[email protected]> wrote: Hi Alex, It's hard to say, cause we are heavily using DataGrid in whole application. Each view contains some list. We have for example now view called "Correspondence" where in theory could be hundreds rows or maybe even thousands. Thanks, Piotr czw., 30 kwi 2020 o 17:27 Alex Harui <[email protected]> napisał(a): > Piotr, how many rows of data are there? > > IMO, there are multiple scenarios of increasing complexity. That's one of > the reasons we have beads in Royale. The vast majority of our work so far > has been to handle the simpler scenarios. The ones I can think of are: > > 1) few rows, fixed height, pixel scrolling > 2) lots of rows, fixed height, pixel scrolling > 3) lots of rows, fixed height, row scrolling > 4) few rows, fixed height, row scrolling > 5) few rows, variable height, pixel scrolling > 6) few rows, variable height, row scrolling > 7) lots of rows, variable height, row scrolling > 8) lots of rows, variable height, pixel scrolling > > We've done 1 & 2 as beads. 5 should be not-too-hard although I certainly > be wrong about that. If you can live with 5, then see if you and/or Carlos > and other volunteers can come up with the beads for it. There is a big > jump in complexity after 5, especially 7 & 8. > > HTH, > -Alex > > On 4/30/20, 6:54 AM, "Piotr Zarzycki" <[email protected]> wrote: > > Just for the reference when you setup variableRowHeight = true in flex > DataGrid looks like that - > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fibb.co%2FD7K9dLs&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032796956&sdata=ObWKAkYuvpWUcSLf0OHIUk6hc3SdkWi4ApN0QcLTpWY%3D&reserved=0 > > czw., 30 kwi 2020 o 15:51 Piotr Zarzycki <[email protected]> > napisał(a): > > > Hi Carlos, > > > > I also do not see any other option than generate each height of the > row > > based on the largest height in each row. It is definitely not an > option to > > force people use rowHeight - That model definitely fail in our > application > > where there are different portion of text in rows. One row will have > 30 > > height the second one 45 because there more text to display and so > on. > > > > Right now Jewel DataGrid doesn't have variableRowHeight. To me it > should > > in some form appear and if: > > > > variableRowHeight = true - Row height is being calculated > dynamically. > > Each row can have different height. Setup rowHeight when that option > is > > true won't have affect. > > variableRowHeight = false - default state. Setup rowHeight has some > > effect. Each row has some predefined default height ex. 35. > > > > Thoughts ? > > > > Thanks, > > Piotr > > > > pt., 10 kwi 2020 o 17:35 Carlos Rovira <[email protected]> > > napisał(a): > > > >> Hi Piotr, > >> > >> I was taking a look at the issue. Some initial thoughts: > >> > >> List has "variableRowHeight: true" (defined in Theme) and rowHeight > = > >> NaN; by > >> default > >> (as we can see in first List example in TDJ. We can have different > heights > >> for each item renderer, while second example has rowHeight defined > and > >> that > >> makes all items has the same height (Side note: Here there's a bug > since > >> defining rowHeight should remove "variableRowHeight", since both > should be > >> mutually exclusive). > >> > >> In DataGrid, we have lots of Lists becoming columns. So to make DG > work as > >> List I think we need to sync all rows to match the bigger height per > >> renderer in all lists. > >> > >> I think there's no other way to do this. > >> > >> If not, other options is to avoid DG have "variableRowHeight" and > force > >> people to use "rowHeight". > >> > >> I don't remember what Flex allow to do here, but maybe is something > to > >> discuss a bit to see what could be the best for Royale Jewel > DataGrid. > >> > >> Thanks > >> > >> Carlos > >> > >> > >> > >> > >> El vie., 10 abr. 2020 a las 15:45, Piotr Zarzycki (< > >> [email protected]>) escribió: > >> > >> > Hi Carlos, > >> > > >> > We have switched in our application to DataGrid. There are > unfortunately > >> > some custom adjustment to have it properly working, but we can > move > >> forward > >> > with that. > >> > However I have found something which I believe should be fixed > sooner > >> than > >> > later. > >> > > >> > When rowHeight is not set and there are different amount of data > in data > >> > grid cells rows are being cut and data are not displaying fully. > I have > >> > pushed to TourDeJewel example which shows the issue. > >> > > >> > Thanks, > >> > -- > >> > > >> > Piotr Zarzycki > >> > > >> > Patreon: * > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032796956&sdata=x7Rr2YwXLyUtAi7JeVpuy07FFB%2BMJJrZMudvcsWp%2Fno%3D&reserved=0 > >> > < > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=xJUAK%2F5QnB4MpgNjhW%2BiCAhRnPYCz%2BjCa5rlUNwsUgM%3D&reserved=0 > >* > >> > > >> > >> > >> -- > >> Carlos Rovira > >> > https://nam04.safelinks.protection.outlook.com/?url=http%3A%2F%2Fabout.me%2Fcarlosrovira&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=sLZ%2F4%2Fhhiy0S%2BMQQzWRdTwfA%2FXAHjzj1hrqkbxgFVNM%3D&reserved=0 > >> > > > > > > -- > > > > Piotr Zarzycki > > > > Patreon: * > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=xJUAK%2F5QnB4MpgNjhW%2BiCAhRnPYCz%2BjCa5rlUNwsUgM%3D&reserved=0 > > < > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=xJUAK%2F5QnB4MpgNjhW%2BiCAhRnPYCz%2BjCa5rlUNwsUgM%3D&reserved=0 > >* > > > > > -- > > Piotr Zarzycki > > Patreon: * > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=xJUAK%2F5QnB4MpgNjhW%2BiCAhRnPYCz%2BjCa5rlUNwsUgM%3D&reserved=0 > < > https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032801936&sdata=xJUAK%2F5QnB4MpgNjhW%2BiCAhRnPYCz%2BjCa5rlUNwsUgM%3D&reserved=0 > >* > > > -- Piotr Zarzycki Patreon: *https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032806916&sdata=jMInrsYoZyFhWu%2FzwX9S2Sb69nOJG%2FZeoWcU6i12QJk%3D&reserved=0 <https://nam04.safelinks.protection.outlook.com/?url=https%3A%2F%2Fwww.patreon.com%2Fpiotrzarzycki&data=02%7C01%7Caharui%40adobe.com%7C352fc1b552e54315c77f08d7ed1bd02f%7Cfa7b1b5a7b34438794aed2c178decee1%7C0%7C0%7C637238576032806916&sdata=jMInrsYoZyFhWu%2FzwX9S2Sb69nOJG%2FZeoWcU6i12QJk%3D&reserved=0>*
