Deleting a row from a UIData table

I am trying to select a row from a jsf table then call a backing bean method to delete it using this backing bean method.
void deleterow(){
dataitem =(item) dataTable.getrowdata();
List newlist = new ArrayList();
table = model.getwrappeddata();
for (int i=0; i<table.size(); i++){
    product = (product)table.get(i);
   if (!product.name.equals(dataitem.name)){
      newlist.add(product);
model.setwrappeddata(newlist);
}all the getter/setter methods are set and it does seem to work.However the results are very inconsistent,sometimes rows are deleted and then magically reappear on the the table latter! Anyone knows of a fail proof method of achieving this?
Ta.

A decent IDE ships with a code debugger which allows you tracking variables and running code step by step. If you don't use an IDE or you're unable to use it, then just add some sysouts which prints the desired variables at strategic locations and/or moments.

Similar Messages

Deleting a row from the item table

Hi All,
I have a requirement where I need to put a button to delete the selected row from the item table and for this I have written the following code:
DATA lo_nd_t_bseg TYPE REF TO if_wd_context_node.
    DATA lo_el_t_bseg TYPE REF TO if_wd_context_element.
    DATA ls_t_bseg TYPE wd_this->element_t_bseg.
    data: it_tab type table of wd_this->element_t_bseg.
lo_nd_t_bseg = wd_context->path_get_node( path = `Z.T_BSEG` ).
lo_el_t_bseg = lo_nd_t_bseg->get_element( ).
lo_el_t_bseg->get_static_attributes(
    IMPORTING
      static_attributes = ls_t_bseg ).
    lo_nd_t_bseg = wd_context->path_get_node( path = `Z.T_BSEG` ).
    lo_el_t_bseg = lo_nd_t_bseg->get_element( ).
    IF lo_el_t_bseg IS not INITIAL.
      lo_nd_t_bseg->remove_element( lo_el_t_bseg ).
    ENDIF.
Now the problem is although it's deleteing the selected line correctly but because of this I am losing one line on the screen for the user to enter... my form has a fixed number of lines and in my case it's 10... so everytime I am using deleting a line item I am losing one line to enter..... can you please tell me how can I avoid this?
Edited by: rajatg on Aug 4, 2011 3:12 PM

lets say...
i have 1,2,3 documents
i have cleared , document 2....
1. when the user selects this record.... you can read the context_element....using the context element you can get the values and clear those values and set the blank values...
when the user click on save ...you can have only those two records in the table.
2. conitnue with your logic .... remove_element. once it is done ,,, create_element at the deleted index...
3. when clicked on delete ...remove_element ( current code).... bind the table to the node... and you will have ur values

Deleting multiple rows from SUD dialog table

Hi,
I have some SUD dialog tables that I would like to delete some rows from. I can select and delete all or one row (using a SUD button that finds out which one row was selected or if all, and then deleting them with the table.rows.remove command), but I seem to have troubles if I want to select multiple rows (either in a range, ex: rows 3-10, or non-sequential, ex: 1, 4, 6 and 23). I just started working on this but thought maybe someone has already done this and can save me the trouble!
Thanks!
Julia Moeller

Hi Julia,
Just a quick guess-- try looping backwards and deleting the last rows first:
FOR i = 10 TO 3 Step -1
table.rows.remove i
NEXT
Haven't tested it, so no guarantees,
Brad Turpin
DIAdem Product Support Engineer
National Instruments

How to delete the row from the ADF table using popup box

Hi,
I have one requirement like need to delete a record from the table, but that time need to show one popup window for confirmation of the deletion. I am using Delete buttom from the vo operations. I am able to delete the row with out popup but when i used the popup that time deletion is not happening.
Can any one help me in this.
Regards,

Issue was resolved.

How to soft delete a row from the target table?

Could someone help me on this requirement?
How to implement the below logic using only ODI? I am able to implement the below logic with the "DELETE_FLAG" as "N".
I want to make the latest record with the flag as "N" and all the previous other records with the flag as "D".
Thanks a lot in advance.
I have a source table "EMP".
EMP
EMPID FIRST_NAME
1 A
2 B
First name is changed from A to C and then, C to D etc. For each data change, I would add a target row and mark the latest row as "N" and the rest as "D". The target table would contain the following data:
Target_EMP
EMPID FIRST_NAME DELETE_FLAG
1 A D
1 C D
1 D N

The problem is that I can't delete the row cause it demands from me to fill the mandatory field previously. It takes place when the key field is ROWID. In other cases delete is succesful.

How to delete multiple rows from ADF table

How to delete multiple rows from ADF table

Hi,
best practices when deleting multiple rows is to do this on the business service, not the view layer for performance reasons. When you selected the rows to delete and press submit, then in a managed bean you access thetable instance (put a reference to a managed bean from the table "binding" property") and call getSeletedRowKeys. In JDeveloper 11g, ADF Faces returns the RowKeySet as a Set of List, where each list conatins the server side row key (e.g. oracle.jbo.Key) if you use ADF BC. Then you create a List (ArrayList) with this keys in it and call a method exposed on the business service (through a method activity in ADF) and pass the list as an argument. On the server side you then access the View Object that holds the data and find the row to delte by the keys in the list
Example 134 here: http://blogs.oracle.com/smuenchadf/examples/#134 provides you with the code
Frank

Deleting a row from a table control through right-click menu

I have a table control. I want to delete a row from it when a user right clicks on a particular row and selects "Delete row" menu item. I have managed the creation of menu item but have not been able to delete the row which is right clicked and the menu item "Delete row" is selected. Guidance required! Thanks!

smercurio_fc wrote:
It's irrelevant whether the table is a control or indicator. See attached VI.
Hi smercurio,
please see the attached picture. In my previous post i mean the different in the menu. The red marked function is not available, if the table is an indicator. LV8.5!
Mike
Message Edited by MikeS81 on 04-18-2008 05:19 PM
Attachments:
Unbenannt.PNG ‏22 KB

Deleting a row from a table using jsp

Given a table in a jsp, can an user click on a row of that table and retrieve the information so that the program can delete a record from a database table?
most of the tables that I have seen are static, the user cannot interact with them(specially when the user wants to delete several records from a database table).
Can anyone suggests a good book or way of deleting a row from table using jsp.

eg use a column in the table that has a radio button or check box,
on submit, get all the rows that are checked, using the row as an index into your db store, get the key and use the key to issue the sql delete command.

Deleting a row from parent table

Dear Guru's
I am having two table with parent - child relationship. My problem is when I am deleting a row from parent table the curresponding child row from child table also should be deleted.
My Primary table 'Employee, EMPID Primary key
Child table 'Privilage' inthis EMPID referencing the EMPID of Employee table
My need is when I am deleting a row from parent table the curresponding child row from child table also should be deleted
I issued the SQL query like,
delete from employee where empid='12345' cascade constraints;
Then it showing me error like,
ERROR at line 1:
ORA-00933: SQL command not properly ended
Please resolve my issue , Its Top urgent
Thanks & Cheers
Antony

Choosing How Foreign Keys Enforce Referential Integrity
Oracle Database allows different types of referential integrity actions to be enforced, as specified with the definition of a FOREIGN KEY constraint:
Prevent Delete or Update of Parent Key The default setting prevents the deletion or update of a parent key if there is a row in the child table that references the key. For example:
CREATE TABLE Emp_tab (
FOREIGN KEY (Deptno) REFERENCES Dept_tab);Delete Child Rows When Parent Key Deleted The ON DELETE CASCADE action allows parent key data that is referenced from the child table to be deleted, but not updated. When data in the parent key is deleted, all rows in the child table that depend on the deleted parent key values are also deleted. To specify this referential action, include the ON DELETE CASCADE option in the definition of the FOREIGN KEY constraint. For example:
CREATE TABLE Emp_tab (
    FOREIGN KEY (Deptno) REFERENCES Dept_tab
        ON DELETE CASCADE); Set Foreign Keys to Null When Parent Key Deleted The ON DELETE SET NULL action allows data that references the parent key to be deleted, but not updated. When referenced data in the parent key is deleted, all rows in the child table that depend on those parent key values have their foreign keys set to null. To specify this referential action, include the ON DELETE SET NULL option in the definition of the FOREIGN KEY constraint. For example:
CREATE TABLE Emp_tab (
    FOREIGN KEY (Deptno) REFERENCES Dept_tab
        ON DELETE SET NULL);
SQL> conn scott/tiger
Connected.
SQL> create table ppk ( no number primary key);
Table created.
SQL> begin for inn in 1..10 loop insert into ppk values (inn); end loop; end;
PL/SQL procedure successfully completed.
SQL> create table ffk ( no number references ppk(no));
Table created.
SQL> begin for inn in 1..10 loop insert into ffk values (inn); end loop; end;
PL/SQL procedure successfully completed.
SQL> drop table ppk cascade constraints;
Table dropped.Message was edited by:
user52
Message was edited by:
user52
Message was edited by:
user52

Deleting a row from a table containing CLOB as one of the columns

When i delete a row from a table which contains a CLOB (internal clob) i.e. CLOB or BLOB column, Will the CLOB data will also be deleted ? I understand that what exactly stored in the CLOB column is the clob locator which points to the actual data.
So, when I delete this row, the clob locator will be deleted, but will the actual data what this locator is pointing to is also deleted ??? if not what is the process to delete the data the locator is pointing to when the row containing the locator is deleted ? If this is not happening then the actual data might become an orphan data which nobody has access to, will automatic garbage cleaning occurs on a frequent intravels to delete unaddressed data residing on the database server ?
Thanks in advance for the help, can email me at [email protected] alternatively.
Regards,
Srinivasa C.

Michael,
Thanks very much for your inputs, here are the results i got when i tried the way you explained in your answer, the TRUNCATE command made the actual size back to normal, but the delete is not the same, so, how can i delete the data that a particular clob locator may point to ?
truncate would delete all the rows of the table, which might not serve my purpose, i would like to delete a row and also it's associated clob data from the database! is there anyway to do this ?
is there any limitation on the ool_sample size? i am basically a c++ programmer, i am looking for some function like FREE which would free the allocated memory to the clob once the locator is deleted.
your help is greatly appreciated - Thanks!
:-) Srini.
==========================
My Results:
==========================
SQL> create table sample (
2 id integer primary key,
3 the_data CLOB default empty_clob() )
4 lob (the_data) store as ool_sample;
Table created.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
20K
SAMPLE
10K
SQL> select count(*) from sample;
COUNT(*)
0
SQL> begin
2 for i in 1..1000
3 loop
4 insert into sample values (i, RPAD('some data', 4000) );
5 end loop;
6 end;
7 /
PL/SQL procedure successfully completed.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> delete sample;
1000 rows deleted.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> commit;
Commit complete.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
6420K
SAMPLE
70K
SQL> begin
2 for i in 1..1000
3 loop
4 insert into sample values (i, rpad('some data', 4000));
5 end loop;
6 end;
7 /
PL/SQL procedure successfully completed.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
9616K
SAMPLE
70K
SQL> truncate table sample;
Table truncated.
SQL> select segment_name, round(sum(bytes)/1024, 2) || 'K' as sotrage_consumed
2 from user_segments
3 where segment_name in ('SAMPLE', 'OOL_SAMPLE')
4 group by segment_name;
SEGMENT_NAME
SOTRAGE_CONSUMED
OOL_SAMPLE
20K
SAMPLE
10K

Issue while deleting a row from a table

Dear friends,
i am getting an issue while deleting a row from a table, pls check screen shots , the first screen shot is my table contents
when i delete 2 row , the second row is deleting properly like below screen shot
but i want like below screen shot , Col1 contents should be like pic 1 . could any one pls let me know how to solve this issue.
Thanks
Vijaya

Hi vijaya,
please try this code, it will help you.
DATA : it_rows TYPE wdr_context_element_set,
          wa_rows LIKE LINE OF it_rows.
   DATA lo_nd_table TYPE REF TO if_wd_context_node.
    DATA lt_table TYPE wd_this->elements_table.
   DATA lo_el_table TYPE REF TO if_wd_context_element.
   DATA ls_vbap TYPE wd_this->element_table.
DATA: ld_index TYPE i.
data value TYPE sy-index.
* navigate from <CONTEXT> to <table> via lead selection
   lo_nd_table= wd_context->get_child_node( name = wd_this->wdctx_table ).
* @TODO handle non existant child
* IF lo_nd_table IS INITIAL.
* ENDIF.
* get element via lead selection
* alternative access via index
* lo_el_table = lo_nd_table->get_element( index = 1 ).
* @TODO handle not set lead selection
   IF lo_el_table IS INITIAL.
   ENDIF.
* navigate from <CONTEXT> to <table> via lead selection
   lo_nd_table = wd_context->get_child_node( name = wd_this->wdctx_table ).
* @TODO handle non existant child
* IF lo_nd_table IS INITIAL.
* ENDIF.
   lo_nd_table->get_static_attributes_table( IMPORTING table = lt_table ).
* @TODO handle non existant child
* IF lo_nd_table IS INITIAL.
* ENDIF.
** @TODO compute values
** e.g. call a model function
* navigate from <CONTEXT> to <table> via lead selection
   lo_nd_table = wd_context->get_child_node( name = wd_this->wdctx_table ).
* @TODO handle non existant child
* IF lo_nd_table IS INITIAL.
* ENDIF.
** @TODO compute values
** e.g. call a model function
it_rows = lo_nd_table>get_selected_elements( ).
   CALL METHOD lo_nd_table->GET_LEAD_SELECTION_INDEX
   RECEIVING
     INDEX = value .
LOOP AT it_rows INTO wa_rows.
     CALL METHOD wa_rows->get_static_attributes
       IMPORTING
              static_attributes = ls_table.
     READ TABLE lt_table INTO ls_table WITH KEY col1 = ls_table-col1.
      ld_index = value.
          ENDLOOP.
   CLEAR : ls_table-col2,
         ls_table-col2.
   MODIFY lt_table INDEX ld_index FROM ls_table.
lo_nd_table->bind_table( new_items = lt_table set_initial_elements = abap_true ).

Best practice for deleting multiple rows from a table , using creator

Hi
Thank you for reading my post.
what is best practive for deleting multiple rows from a table using rowSet ?
for example how i can execute something like
delete from table1 where field1= ? and field2 =?
Thank you

Hi,
Please go through the AppModel application which is available at: http://developers.sun.com/prodtech/javatools/jscreator/reference/codesamples/sampleapps.html
The OnePage Table Based example shows exactly how to use deleting multiple rows from a datatable...
Hope this helps.
Thanks,
RK.

Problem in deleting row from database in table component

Hi,
I have a table component that its content change by diffrent links.
in this table i have a hyperlink in each row to deleting that row from dataBase.
so i must get the current row .
i do it like this:
define a rowset in the page that have a delete query :
delete from response where responseID=?
in action of delete hyperlink ,i have:
Integer responseId=(Integer)responseDataProvider.
getValue("#{currentRow.value['responseID']}") ;
getSessionBean1().getResponseRowSet().setObject(1,responseId);
getSessionBean1().getResponseRowSet().execute();
but in first line occure a exception:
illigalArgument #{currentRow.value['responseID']}
thanks.

by using data table
first you should get current record (row that recived action)
then delete it by using data provider.
I do not think that you could execute delete statement using rowSets because they just can provide Select statements.
btw , following code will retrive clicked row from data table and
delete that row
try {
RowKey rk = getTableRowGroup1().getRowKey();
if (rk != null) {
testDataProvider.removeRow(rk);
testDataProvider.commitChanges();
} catch (Exception ex) {
log("ErrorDescription", ex);
error(ex.getMessage());
hth
masoud

Deleting Multiple Rows From Multiple Tables As an APEX Process

Hi There,
I'm interesting in hearing best practice approaches for deleting multiple rows from multiple tables from a single button click in an APEX application. I'm using 3.0.1.008
On my APEX page I have a Select list displaying all the Payments made and a user can view individual payments by selecting a Payment from the Select List (individual items are displayed below using Text Field (Disabled, saves state) items with a source of Database Column).
A Payment is to be deleted by selecting a custom image (Delete Payments Button) displayed in a Vertical Images List on the same page. The Target is set as the same page and I gave the Request a name of DELETEPAY.
What I tried to implement was creating a Conditional Process On Submit - After Computations and Validations that has a source of a PL/SQL anonymous block as follows:
BEGIN
UPDATE tblDebitNotes d
SET d.Paid = 0
WHERE 1=1
AND d.DebitNoteID = :P7_DEBITNOTEID;
INSERT INTO tblDeletedPayments
( PaymentID,
DebitNoteID,
Amount,
Date_A,
SupplierRef,
Description
VALUES
( :P7_PAYMENTID,
:P7_DEBITNOTEID,
:P7_PAID,
SYSDATE,
:P7_SUPPLIERREF,
:P7_DESCRIPTION
DELETE FROM tblPayments
WHERE 1=1
AND PaymentID = :P7_PAYMENTID;
END;
The Condition Type used was Request = Expression 1 where Expression 1 had a value of DELETEPAY
However this process is not doing anything!! Any insights greatly appreciated.
Many thanks,
Gary.

...the "button" is using a page level Target,...
I'm not sure what that means. If the target is specified in the definition of a list item, then clicking on the image will simply redirect to that URL. You must cause the page to be submitted instead, perhaps by making the URL a reference to the javaScript doSubmit function that is part of the standard library shipped with Application Express. Take a look at a Standard Tab on a sample application and see how it submits the page using doSubmit() and emulate that.
Scott

Deleting rows from very large table

Hello,
I need to delete rows from a large table, but not all of them, so I can't use truncate. The delete condition is based on one column, something like this:
delete from very_large_table where col1=100;
There's an index (valid, B-tree) on col1, but it still goes very slow. Is there any instruction which can help delete rows faster?
Txh in adv.
A.

Your manager doesn't agree to your running an EXPLAIN PLAN? What is his objection? Sounds like the prototypical 'pointy-hair boss'.
Take a look at these:
-- do_explain.sql
spool explain.txt
-- do EXPLAIN PLAN on target queries with current index definitions
truncate table plan_table
set echo on
explain plan for
<insert query here>
set echo off
@get_explain.sql
-- get_explain.sql
set linesize 120
set pagesize 70
column operation     format a25
column query_plan     format a35
column options          format a15
column object_name     format a20
column order           format a12
column opt           format a6
select     lpad(' ',level) || operation "OPERATION",
     options "OPTIONS",
     decode(to_char(id),'0','COST = ' || NVL(to_char(position),'n/a'),object_name) "OBJECT NAME",
     cardinality "rows",
     substr(optimizer,1,6) "OPT"
from     plan_table
start     with id = 0
connect by prior id = parent_id
There are probably newer, better ways, but this should work with all living versions of Oracle and is something I've had in my back pocket for several years now. It's not actually executing the query or dml in question, just running an explain plan on it.

Deleting a row from a UIData table

Similar Messages

Maybe you are looking for