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

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Vehicle Passing Summary table structure
          PsngSmry_ID(Number),Vehicle_iD(Number),PsngSmryTime(datetime)
Vehicle table structure
          Vehicle_iD(Number),VehicleName(VarChar2),VehicleType(VarChar2)
Here Vehicle_iD is the Primary Key
Equipment Table Structure
          Eqpmt_id(Number),Vehicle_iD(Number),EqpmtName(VarChar2),EqpmtType(VarChar2)
Here Eqpmt_id is the Primary Key and Vehicle_iD is the foreign Key
Equipment Component Table Structure
          Eqpmt_Cmpnt_id(Number) ,Eqpmt_id(Number),EqpmtCmpntName(VarChar2),EqpmtCmpntName(VarChar2),Parent_Eqpmnt_ID(Number)
Here Eqpmt_Cmpnt_id is the Primary Key and Eqpmt_id is the foreign Key
The rows in the Vehicle Passing Summary table
     PsngSmry_ID Vehicle_ID     PsngSmryTime
     111111          80986246     2010/10/11
     111112          80986247     2010/10/12
     111113          80986248     2010/10/10
The rows in the Vehicle Table
     Vehicle_iD     VehicleName     VehicleType
     80986246          Lorry          Four Wheeler
     80986247          Van          Four Wheeler
     80986248          Bus          Four Wheeler
The rows in the Equipment Table:
     Eqpmt_id     Vehicle_iD     EqpmtName          EqpmtType
     109846          80986246          2 Axle Lorry          CAR
109821          80986246          4 Axle Lorry          CAR
109825          80986246          4 Axle Lorry          CAR
     109562          80986247          2 Axle VAn          CAR
109555          80986247          3 Axle VAn          CAR
109777          80986247          3 Axle VAn          CAR
     109587          80986248          2 Axle Bus          CAR
The rows in the Equipment Component Table :
     Eqpmt_Cmpnt_id Eqpmt_id EqpmtCmpntName Parent_Eqpmnt_ID
     20904146          109846          Truck
     20904147          109846          Truck
     20904148          109846          Axle               20904146
     20904159          109846          Axle               20904146
     20904167          109846          Wheel               20904148
     20904177          109846          Wheel               20904148
     20904185          109846          Wheel               20904159
     20904325          109846          Wheel               20904159
     20904188          109846          Axle               20904147
     20904189          109846          Axle               20904147
     20904195          109846          Wheel               20904188
     20904196          109846          Wheel               20904188
     20904197          109846          Wheel               20904189
     20904398          109846          Wheel               20904189
     10904146          109562          Truck
     10904147          109562          Truck
     10904148          109562          Axle               10904146
     10904159          109562          Axle               10904146
     10904167          109562          Wheel               10904148
     10904177          109562          Wheel               10904148
     10904185          109562          Wheel               10904159
     10904325          109562          Wheel               10904159
     10904188          109562          Axle               10904147
     10904189          109562          Axle               10904147
     10904195          109562          Wheel               10904188
     10904196          109562          Wheel               10904188
     10904197          109562          Wheel               10904189
     10904398          109562          Wheel               10904189
Note : In Equipment Component Table,the hierarchy will be Truck-->Axle-->Wheel.So
1.the Parent_Eqpmnt_ID of Axle is Truck's Eqpmt_Cmpnt_id.
2.the Parent_Eqpmnt_ID of Wheel is Axle's Eqpmt_Cmpnt_id.
Now I want to write the store procedure which will take "PsngSmry_ID(Number)" as input and the o/p will be in the format :
     Eqpmt_Cmpnt_id Eqpmt_id EqpmtCmpntName Parent_Eqpmnt_ID
     20904146          109846      Truck
     20904148          109846      Axle               20904146
     20904167          109846      Wheel               20904148
     20904177          109846      Wheel               20904148
     20904159          109846      Axle               20904146
     20904185          109846      Wheel               20904159
     20904325          109846      Wheel               20904159
     20904147          109846      Truck
     20904188          109846      Axle               20904147
     20904195          109846      Wheel               20904188
     20904196          109846      Wheel               20904188
     20904189          109846      Axle               20904147
     20904197          109846      Wheel               20904189
     20904398          109846      Wheel               20904189
     10904146          109562          Truck
     10904148          109562          Axle               10904146
     10904167          109562          Wheel               10904148
     10904177          109562          Wheel               10904148
     10904159          109562          Axle               10904146
     10904185          109562          Wheel               10904159
     10904325          109562          Wheel               10904159
     10904147          109562      Truck
     10904188          109562      Axle               10904147
     10904195          109562      Wheel               10904188
     10904196          109562      Wheel               10904188
     10904189          109562      Axle               10904147
     10904197          109562      Wheel               10904189
     10904398          109562      Wheel               10904189
**Please add these columns in the o/p **
1.EqpmtName and EqpmtType from Eqpmt table
2.VehicleName and Vehicle Type from Vehicle table
3.PsngSmryTime from PassingSummary table **
Can anyone tell me the solution?
Edited by: 865216 on Jun 22, 2011 2:14 AM

Hi,
I am new to this technology;But, just wanted to help you.
Please refer the code it might be atleast helpful for you.
But am facing PL/SQL: ORA-00933: error and unable to resolve it.could anyone please correct this code.
sorry if my code is totally wrong.
Thank you,
Rupa
create or replace procedure Equipment_proc
is
begin
DECLARE
TYPE EQP_record IS RECORD (
Vehicle_iD Vehicle.Vehicle_iD%TYPE,
Eqpmt_Cmpnt_id Equipment_Component.Eqpmt_Cmpnt_id%type,
EqpmtCmpntName Equipment_Component.EqpmtCmpntName%type,
Parent_Eqpmnt_ID Equipment_Component.Parent_Eqpmnt_ID%type,
Eqpmt_id Equipment.Eqpmt_id%type,
vehicleId NUMBER);
EQP_rec EQP_record;
CURSOR EQP_cursor IS
select a.Vehicle_iD,c.Eqpmt_Cmpnt_id,b.Eqpmt_id,c.EqpmtCmpntName,c.Parent_Eqpmnt_ID
from Vehicle a,Equipment b,Equipment_Component c
where a.Vehicle_iD=b.Vehicle_iD
and b.Eqpmt_id=c.Eqpmt_id
and a.vehicle_id=&EQP_rec.vehicleId;
BEGIN
OPEN EQP_cursor;
     FETCH EQP_cursor INTO EQP_rec;
     dbms_output.put_line(EQP_rec.Vehicle_iD,EQP_rec.Eqpmt_Cmpnt_id||','||EQP_rec.Eqpmt_id||','||EQP_rec.EqpmtCmpntName||','||EQP_rec.Parent_Eqpmnt_ID);
CLOSE EQP_cursor;
END;
END;

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04/08/27 16:57:29      at oracle.jbo.server.ViewObjectImpl.notifyRowDeleted(ViewObjectImpl.java:6565)
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04/08/27 16:57:29      at oracle.adf.controller.lifecycle.PageLifecycle.processComponentEvents(PageLifecycle.java:447)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:246)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.processComponentEvents(DataAction.java:440)
04/08/27 16:57:29      at oracle.adf.controller.lifecycle.PageLifecycle.handleLifecycle(PageLifecycle.java:114)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.handleLifecycle(DataAction.java:233)
04/08/27 16:57:29      at com.awiweb.om.ext.AWIDataAction.handleLifecycle(AWIDataAction.java:191)
04/08/27 16:57:29      at oracle.adf.controller.struts.actions.DataAction.execute(DataAction.java:163)
04/08/27 16:57:29      at org.apache.struts.action.RequestProcessor.processActionPerform(RequestProcessor.java:484)
04/08/27 16:57:29      at org.apache.struts.action.RequestProcessor.process(RequestProcessor.java:274)
04/08/27 16:57:29      at org.apache.struts.action.ActionServlet.process(ActionServlet.java:1485)
04/08/27 16:57:29      at org.apache.struts.action.ActionServlet.doPost(ActionServlet.java:527)
04/08/27 16:57:29      at javax.servlet.http.HttpServlet.service(HttpServlet.java:760)
04/08/27 16:57:29      at javax.servlet.http.HttpServlet.service(HttpServlet.java:853)
04/08/27 16:57:29      at com.evermind.server.http.ResourceFilterChain.doFilter(ResourceFilterChain.java:65)
04/08/27 16:57:30      at oracle.security.jazn.oc4j.JAZNFilter.doFilter(Unknown Source)
04/08/27 16:57:30      at com.evermind.server.http.EvermindFilterChain.doFilter(EvermindFilterChain.java:16)
04/08/27 16:57:30      at oracle.adf.model.servlet.ADFBindingFilter.doFilter(ADFBindingFilter.java:228)
04/08/27 16:57:30      at com.evermind.server.http.ServletRequestDispatcher.invoke(ServletRequestDispatcher.java:600)
04/08/27 16:57:30      at com.evermind.server.http.ServletRequestDispatcher.forwardInternal(ServletRequestDispatcher.java:317)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.processRequest(HttpRequestHandler.java:790)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:270)
04/08/27 16:57:30      at com.evermind.server.http.HttpRequestHandler.run(HttpRequestHandler.java:112)
04/08/27 16:57:30      at com.evermind.util.ReleasableResourcePooledExecutor$MyWorker.run(ReleasableResourcePooledExecutor.java:192)
04/08/27 16:57:30      at java.lang.Thread.run(Thread.java:534)

This looks like a bug in TreeBinding. Please file this as a bug/tar with OracleSupport with your reproducible testcase (or steps to reproduce). Thanks.

How do I select rows from the same table that have multiple occurances

Hi Everybody,
I am trying to select records from a detail table by grouping it. The table has more than 1 million records and the query is not performing well. The basic question is how to select a distinct record from a table which matches all values in one column and any in the other.
desc SCV
ID NUMBER PK (ID + SCRID)
SCRID NUMBER FK(SC)
ID SCRID
1 1
2 1
3 1
4 2
5 2
6 3
7 4
8 4
desc PROJECTS
ID NUMBER PK
NAME VARCHAR2(100)
ID NAME
1 PROJECT1
2 PROJECT2
3 PROJECT3
4 PROJECT4
desc PJS
ID NUMBER
PROID NUMBER FK (PROJECTS)
SCRID NUMBER FK (SCV(SCRID + SCVID)
SCVID NUMBER
ID PROID SCRID SCVID
1 1 1 1
2 1 1 2
3 1 2 5
4 1 3 6
5 1 4 7
6 2 1 3
7 2 2 4
8 2 2 5
9 2 4 7
There are over 1 million records in PJS.
desc TBP
SCRID NUMBER
SCVID NUMBER
SCRID SCVID
1 1
1 2
1 3
2 4
2 5
3 6
4 7
4 8
The requirement is to select projects that have matching SCRID, SCVID from TBP such that
all distinct SCRID should match and within that and any SCVID match will do. (A "AND" between each SCRID and an "OR" for each SCVID in that SCRID like 'SCRID = 1 AND (SCVID = 1 OR SCVID = 2 OR SCVID = 3) AND SCRID = 2 AND (SCVID =....)
So, for the sample data it should return us PROID = 1
I have few queries written for this:
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 1
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 2
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 3
INTERSECT
SELECT PROID FROM PJS,TBP WHERE TBP.SCVID = PJS.SCVID AND TBP.SCRID = 4
This query performs well but the cost is very high, hardcoding, sorting.
The 2nd option is to:
SELECT pjs.PROID proid
FROM TBP tbp,
PJS pjs
WHERE pjs.SCVID = tbp.SCVID
AND pjs.SCRID = tbp.SCRID
GROUP BY pjs.PROID
HAVING COUNT(DISTINCT pjs.SCRID) = (SELECT COUNT(DISTINCT SCRID ) FROM TBP)
This has a low cost but runs slowly.
One more way I tried was with the IN operator like
SELECT DISTINCT PROID FROM PJS A,TBP T WHERE T.SCRID = 1 AND T.SCVID = A.SCVID
AND PROID IN (SELECT PROID FROM PJS A,TBP T WHERE T.SCRID = 2 AND T.SCVID = A.SCVID
AND PROID IN (...SO ON with each DISTINCT SCRID.
Again this involves too much of sorting.
Any help will be appriciated.
Thanks in advance.

Hi Andrew,
Use DELETE t_itab statement inside the loop.
I have modified your code. It is perfectly working.See bellow -
LOOP AT it_zmember01 INTO wa_zmember01.
WRITE: / wa_zmember01-mnumber UNDER 'NUMBER',
wa_zmember01-mname UNDER 'NAME',
wa_zmember01-mdob UNDER 'DOB'.
WRITE / '-----------------------------------------------------------------'.
DELETE it_zmember01. " Modified
ENDLOOP.
DELETE it_zmember01. statement inside the loop will delete the current row of the table.
Regards
Pinaki

Deleting a row from the item table

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