No. of Detail Rows

Hi,
A challenge for you all!
I am building a product details system in Portal forms.
One of the screens is a Product Ingredients form with Product as the master block and ingredients as the Detail block. There can be between 1 and 20 ingredients in any 1 product and as these all have to sum to a volume percentage of 100% the client would like to see all ingredients for a product on 1 screen and not have to do Next/Previous to see them all.
As you increase detail rows on a master detail form the performance of the form decreases dramatically so I would like to minimise the number of detail rows displayed for each product to maximise performance.
To this end I wish to dynamically modify the number of detail rows displayed to match the number of ingredients on a product as that product is queried.
I can handle figuring out how many rows I want to set the page to but have not been able to figure out how to change the number of detail rows displayed at run time.
Anyone know how (or if!) this is possible ?
All help gratefully recieved
Andy

Hi,
You can only specify the number of details rows at design time. There is no option to change it at run time.
Thanks,
Sharmila

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New inserted detail row is not showing through accessor

I have to insert master and detail row. I insert row in master view and then I get detail row using getAttribute on master view. Then I insert row into detail row. Result is one inserted master row and no data display in detail view.
How ever in managed bean when I get master view using finditerator and then get detail row also using finditerator on the specific page then rows inserted on master and detail view appear.
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Hi,
its a classical programming mistake you do. You create a new row on the model layer and not the binding layer. The proper way of doing this would be to
1) either create a method binding for the "CreateInsert" operation in the PageDef file and call it from there
or
2) DCIteratorBinding dcIter = ADFUtils.findIterator("PlotMst1Iterator");
    Row rw = dcIter.getRowSetIterator().createRow();
Same for your attempt to create the detail row. Again you can expose the createInsert operation in the PageDef file or use the RowSetIterator. As you create a master and detail row at the same time, be aware of a constraint problem that may arise from this as you have no guarantee that the master is inserted first. Read this http://docs.oracle.com/cd/E35521_01/web.111230/e16182/bcentities.htm#CEGJAFCF to learn about the problem.
Note that use case often matters. While I can see where your coding goes wrong, I can't tell if your approach in general could be chosen better
Frank

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Dear,
I have a test application that runs for years on apex.oracle.com.
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Kind regards
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I have a 1 to many master to detail view link and 2 vo's one for each of the master and detail table.
I am trying unsuccsessfully to create 7 unique detail rows up front to populate at a later stage.
I have created a master record with primary key being staff number and week ending date.
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I am using
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newRow1.setAttribute("Day", "Sun");
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Thanks

John thanks for reply.
I have tried the following and still i get 2 rows created but the first one gets overwritten with the last one. I'm confused as to why the inbuilt insert row doesnt move it on to the next available row. Any idea what i'm not doing in between inserting rows?
ViewObject vo1 = this.getmyVO1();
vo1.executeQuery();
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newRow1.setAttribute("Staff Number","123456A");
newRow1.setAttribute("Week_end_date", "2010-04-04");
newRow1.setAttribute("Date", "2010-04-01");
newRow1.setAttribute("Day", "Sun");
vo1.insertRow(newRow1);
Row newRow2 = vo1.createRow();
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newRow2.setAttribute("Week_end_date", "2010-04-04");
newRow2.setAttribute("Date", "2010-04-03");
newRow2.setAttribute("Day", "Sat");
vo1.insertRow(newRow2);
P.S Yes they are dates but i made them strings for the time being until i get this working thanks for noticing.
Edited by: user13012264 on 20-Apr-2010 04:19
Edited by: user13012264 on 20-Apr-2010 04:20

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Use PRE-UPDATE trigger (Master block).
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Hi,
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Srini,
Should I set the 'Target Data Source' to the detail iterator?
I want detail rows displayed in column 3 for all rows in the table on page load, not on row selection.
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Hi,
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Thank you.

So is there a way to tell ADF to automatically create the first-level detail row (since the master is known) ? or i should manually check that such a row doesn't exists in the first-level detail table and thus create it before creating the row in the second-level detail table?
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go_block(detail)
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Srini,
Should I set the 'Target Data Source' to the detail iterator?
I want detail rows displayed in column 3 for all rows in the table on page load, not on row selection.
The page on load should display the table in below manner, irrespective of row selection all rows' detail values should be rendered.
S No.
Master key
Detail values
1
master1
detail1-1
detail1-2
detail1-3
2
master2
detail2-1
detail2-2
detail2-3
detail2-4
3
master3
detail3-1
detail3-2
detail3-3
Thanks!

No. of Detail Rows

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