Thomas Andraschko

why not just upload the file in your controller to an API?

@anuragnz would you like to contribute this feature via a PR?

Similar to: https://github.com/primefaces/primefaces/issues/3424

@jan-tosovsky-cz would you like to contribute this feature?

Please provide a reproducer

when our Renderer hits row=10, it checks if the a summary row must be encoded (DataTableRender#isInSameGroup) so it compares row 10 and row 11 but when setting the rowIndex to...

after debugging further, when calling UIData#setRowIndex(10) (row = 11, it begins with 0): it calls getDataModel().setRowIndex(10); but getDataModel().getRowIndex() returns 0 https://github.com/primefaces/primefaces/blob/master/primefaces/src/main/java/org/primefaces/model/LazyDataModel.java#L185 this makes 10 -> 0

NEVERMIND: i thought it works in 8.0 but not in 12.0

i commited a prototype maybe we should revisit why LazyDataModel needs to care about the pageSize and remove this in future it would just be great if anyone could provide...

@sebsoftware would you like to provide a intergration test based on your example? would be great contribution and it wont break again in future