Hello –
I’m running into a condition where USE ENTITY SELECTION is not working with an
entity selection that is built with entitySeletion.add() command. I’m wondering
if I’m using it correctly. I’m running 4Dv17r6. Here is a simplified version of
what I’m trying to do:
C_Object($sel;$sel_d;$sel_find)
C_Date(vFindDate)
vFindDate:=Date(ALERT("Enter date:"))
$sel_d:=ds.People.query("Receive_Mail = :1";True) //all records to be
compared
$sel_find:=ds.People.newSelection() //empty entity
For each ($item;$sel_d)
$sel:=ds.Entries.query("People_ID = :1 order by Entry_Date
desc";$item.LinkID)
If ($sel.length#0) //anything found?
If ($sel[0].Entry_Date<=vFindDate)
//compare date of first entry
$sel_find.add($item)
End if
End if
End for each
USE ENTITY SELECTION($sel_find)
I can trace this and see that the $sel_find is a selection of entities from
People. However, when I try to pull that entity selection back into a normal
selection it does nothing. The selection of records in the People table is the
same selection as it was before the method was ran.
Can you use the entitySelection.add command to build the entity and then later
use the USE ENTITY SELECTION command? I had this working using classic 4D
commands and thought I’d convert it to ORDA. I’m wondering if I’m understanding
the .add command correctly or if something else needs to be done with that
object before I call the USE ENTITY SELECTION.
Thanks!
Matt Bollwitt
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