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Resolved Filter a nested datawindow in Power builder 2017

  1. How-to
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  1. systems tcc
    systems tcc
  2. PowerBuilder
  3. Friday, 13 November 2020 06:32 AM UTC

Hi,

 

I have a datawindow "dw_1" for purchase enquiry report. 

 

in dw_1 , there is a dataobject "r_enqlist" which is dynamically set.

 

in r_enqlist there are two dataobjects "r_enqdetails" and "r_enq_annexure"

 

When i retrieve dw_1 i get a single report with enquiry details of multiple parties. I want to filter this report for a single party by clicking a button placed in the window.

 

How can i achieve that ?

I assume that dw_child cannot be used with nestd datawindow.

 

please help.

 

 

 

 

 

 

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Responses (3)
systems tcc
systems tcc Accepted Answer Pending Moderation
  1. Saturday, 14 November 2020 04:41 AM UTC
  2. PowerBuilder
  3. # 1

 

 

Hi

 

I have a datawindow dw_1. The data object for  this datawindow  "r_enqlist" is set at run time. 

 

r_enqlist has two data windows dw_1 and dw_2.

 

dw_1 has data object r_enqdetails and i want to filter this datawindow.

 

When i  alert  Messagebox("Alert",String(dw_1.object.dw_2.dataobject)) r_enqdetails is being displayed.

When i  alert Messagebox("Alert",String(dw_1.Object.dw_2.Object.DataWindow.Column.Count)), i get correct column count of r_enqdetails .

 

So I think I get the correct reference to it. But when i try to filter it by 

 

dw_1.object.dw_2.object.filter(). I get error "error accessing external object property.....".

 I also tried with some change like dw_1.object.dw_2.filter() but got same error.

 

Hope it is clear to you. 

 

If you still need screenshots i shall attach them.

 

Please help

 

 

 

Comment
Chris Pollach @Appeon
  1. Chris Pollach @Appeon
  2. Saturday, 14 November 2020 13:42 PM UTC
Hi;

You cannot use a command like Filter () in DW DOT notation. You would need to use a GetChild() command to get a pointer to the child DWO and then issue the filter from there.

Regards ... Chris
  1. Helpful
Olan Knight
  1. Olan Knight
  2. Sunday, 15 November 2020 18:52 PM UTC
Yes, exactly. :)
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Olan Knight
Olan Knight Accepted Answer Pending Moderation
  1. Friday, 13 November 2020 14:00 PM UTC
  2. PowerBuilder
  3. # 2

Another trick is to use two DWOs and share them, making the primary DWO a grid format and the display DWO whatever format you need. Filter the primary.

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Miguel Leeuwe
Miguel Leeuwe Accepted Answer Pending Moderation
  1. Friday, 13 November 2020 10:12 AM UTC
  2. PowerBuilder
  3. # 3

Hi,

To understand well what you mean, it would be very helpful if you could make a dummy window with your report / datawindow and the nested reports and attach it here

In the help on GetChild():

Nested reports

"You cannot use GetChild to get a reference to a report in a composite DataWindow when the report itself is a composite or nested DataWindow."

 

There might be a little trick to get around that limitation by doing a Modify and change the type of dw to be temporarily of type Grid, if I recall well (processing attribute). I'm not sure if this is what is limiting you, hence the request for you to attach a sample app, so I can try out the "little trick".

 

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