For loop code migration
I found this code in an AS2 .fla and would like to use it in AS3. (The idea is to throw a random number of copies of the movieclip "star_mc" on the stage via AS).
for (var i =0;i<50;i++) {
star_mc.duplicateMovieClip("star"+i,i,{_x:Math.random()*350,_y:Math.random()*150});
this["star"+i].gotoAndPlay(Math.random());
I get this error message: TypeError: Error #1006: duplicateMovieClip is not a function.
at many_fla::MainTimeline/frame1()
The duplicateMovieClip method was removed in AS3 and does not have an equivalent directly replacing it. In order to do what you want you will have to assign a class identifier to the object in the library (via the Linkage option) and use that to create new instances...
for (var i:int=0;i<50;i++) {
var star:Star = new Star();
star.name = "star"+String(i);
star.x = Math.random()*350;
star.y:Math.random()*150);
addChild(star);
star.gotoAndPlay(1);
Similar Messages
-
Please help me.. how to rewrite the following java- for loop code in ada
int i, j, n = 100;
for (i = 0, j = 17; i < n; i++, j-- )
sum += i * j + 3;how to rewrite the following java- for loop code in ada
You should have a programming manual for Ada first. If you mean it the other way round, I think you subject line confused me. -
Imagine a method that searches a specified array list and then returns a result. Something along the lines of
public String searchArray(String textToFind, String arrayToSearch)
for (int i = 0 ; i < arraryToSearch.size(); i++)
// code to search would be here
}All well and good but the code above doesn't seem to work.
What special notation do I have to use in order to get
it to use the value of arraryToSearch rather than the
actual variable itself?
Thank you in advance,
GI assumed that if I put the name of the arraylist in
as a string then Java would be able to see that the
string was a reference to an object and therefore
perform the search on that object. Just for interests
sake, is there a way of doing that?I'm at a complete loss as to why you thought that would work.
If you want to pass an ArrayList as a parameter, then pass it, and make the parameter type ArrayList (or even better, the interface it implements, List).
Bet it's Perl that causes these strange notions.
Sylvia. -
How to recover the for loop or seq() from a sequence result
assume generate a sequence with code
for i in 1..2 do
append 1 to a list to represent outer loop
for j in 1..3 do
append 2 to list to represent inner loop
result in [1,2,2,2,1,2,2,2]
is it possible to recover for loop code and seq() function code from [1,2,2,2,1,2,2,2] ?
with fold or unfold or other method?
computing nightmareYes; and in doing so, your program will converge towards being an exemplar of the generalization of
Greenspun's tenth rule to any arbitrary language (rather than just 'C' or Fortran). -
I've attached a sample VI that I just cannot figure out how to get working the way that I want. I've labeled the some sections with black-on-yellow text boxes for clarity during the description that follows in the next few sentences. Here's what I want:
1) overall -- i'm intend for this to be a subVI that will do data acquisition and write the data to a file. I want it to use a producer/consumer approach. The producer construct is the 'parallel for loop' that runs an exact number of times depending on user input (which will come from the mainVI that is not included). For now I've wired a 1-D array w/ 2 elements as a test case. During the producer loop, the data is acquired and put into a queue to be delt with in the consumer loop (for now, i just add a random number to the queue).
2) the consumer construct is the 'parallel while loop'. It will dequeue elements and write them to a file. I want this to keep running continuously and parallel until two conditions are met.
i. the for loop has finished execution
ii. the queue is empty.
when the conditions are met, the while loop will exit, close the queue, and the subVI will finish. (and return stuff to mainVI that i can deal with on my own)
Here's the problems.
1) in the "parallel for loop" I have a flat sequence structure.. I haven't had time to incorporate some data dependency into these two sequential sections, but basically, I just care that the "inner while loop" condition is met before the data is collected and queued. I think I can do this on my own, but if you have suggestions, I'm interested.
2) I can easily get the outer for and while loops to run sequentially, but I want them to run in parallel. My reasoning for this is that that I anticipate the two tasks taking very different amounts of time. .. basically, I want the while loop to just keep polling the queue to get everything out of it (or I suppose I could somehow use notifiers - suggestions welcome)... the thing is, this loop will probably run faster than the for loop, so just checking to see that the queue is empty will not work... I need to meet the additional condition that nothing else will be placed in the queue - and this condition is met when the for loop is complete. basically, I just can't figure out how to do this.
3) for now, I've placed a simple stop button in the 'parallel while loop', but I must be missing something fundamental here, because the stop button is totally unresponsive. i.e. - when I press it, it stays depressed, and nothing happens.
suggestions are totally welcome!
thanks,
-Z
Attachments:
daq01v1.vi 59 KBI'd actually like to add a little more, since I thought about it a bit and I'm still not quite certain I understand the sequence of events...
altenbach wrote:
zskillz wrote:
So i read a bit more about the 'dequeue element' function, and as I understand it, since there is no timeout wired to the dequeue element function, it will wait forever, thus the race condition I suggested above can never happen!
Yes, you got it!
As I've thought about it a bit more, there's a few things that surprise me... first, the reason the 'dequeue element while loop' errors is not because there's nothing in the queue, it's becaues the queue has been released and it's trying to access that released queue... However the problem I have is this --- Even though there's no timeout wired to the dequeue element, I still would think that the while loop that contains it would continue to run at whatever pace it wanted -- and as i said before.. most of the time, it would find that there is nothing to dequeue, but once in a while, something is there. however, it seems that this loop only runs when something has been enqueued. the reason I say this is illustrated in the next code sample MODv2 that's attached below. I've added a stop button to the "queue size while loop" so the program runs until that is pressed. I've also added a simple conditional in the "dequeue while loop" that generates a random number if it a button is pressed... but this button is totally non-responsive... which means to me that the "dequeue while loop" isn't actually continuously running, but only when an element is added to the queue. this still seems almost like the 'dequeue while loop" waits for a notifier from the queue telling it to run. can you explain this to me? because it is different from what I expect to be happening.
rasputin wrote:
I tried to open your VIs but it doesn't work. LV
is launched, the dialog box (new, open, configure...) opens and then...
nothing. Not even an error message. I guess it isn't a problem of LV
version or a dialog box would appear saying this. Could you, please,
send a image of the code?
Thanks,
Hi Rasputin, I'm using LV8. I assume that was your problem, but who knows. I've attached a pic of of altenbach's solution since it's what I needed.
thanks
-Z
Message Edited by zskillz on 10-20-2006 11:49 AM
Attachments:
daq01v1MODv2.vi 63 KB
daq01v1MODpic.JPG 116 KB -
Simulation Loop: Code could not be generated correctly for this VI
Running LabView Simulation 8.2 on Windows XP laptop. I have a Simulation Loop that keeps generating the following error message:
"Simulation Loop: Code could not be generated correctly for this VI"
The only reference I can find in my searches is to using an RTX target, which does not apply. When I click on Show Error it just highlights the Sim Loop
Any ideas on how to debug this?Perhaps you can start removing things until you don't get the error any more. How big is the code in the loop?
Mike...
Certified Professional Instructor
Certified LabVIEW Architect
LabVIEW Champion
"... after all, He's not a tame lion..."
Be thinking ahead and mark your dance card for NI Week 2015 now: TS 6139 - Object Oriented First Steps -
Code for looping the write_form
Hi
can anyone give me the code that u have developed inthe past for looping the write_form F.M. please...Hi,
TABLES :
scarr,
spfli,
sflight.
*PARAMETERS :
* p_carrid LIKE sflight-carrid,
* p_connid LIKE sflight-connid.
DATA :
BEGIN OF fs_sflight,
carrid LIKE sflight-carrid,
connid LIKE sflight-connid,
fldate LIKE sflight-fldate,
price LIKE sflight-price,
currency LIKE sflight-currency,
seatsmax LIKE sflight-seatsmax,
seatsocc LIKE sflight-seatsocc,
END OF fs_sflight.
DATA :
t_scarr LIKE
STANDARD TABLE
OF scarr.
DATA :
t_spfli LIKE
STANDARD TABLE
OF spfli.
DATA :
t_sflight LIKE
STANDARD TABLE
OF fs_sflight.
DATA :
fs_options TYPE itcpo.
START-OF-SELECTION.
PERFORM selection.
PERFORM open_form.
LOOP AT t_sflight INTO fs_sflight.
AT NEW connid.
PERFORM start_form.
READ TABLE t_spfli INTO spfli WITH KEY carrid = fs_sflight-carrid
connid = fs_sflight-connid.
READ TABLE t_scarr INTO scarr WITH KEY carrid = fs_sflight-carrid.
ENDAT.
PERFORM write_form.
AT END OF carrid.
PERFORM end_form.
ENDAT.
ENDLOOP.
PERFORM close_form.
*& Form selection
* text
* --> p1 text
* <-- p2 text
FORM selection .
SELECT *
FROM scarr
INTO TABLE t_scarr.
* WHERE carrid = p_carrid.
SELECT *
FROM spfli
INTO TABLE t_spfli.
* WHERE carrid = p_carrid
* AND connid = p_connid.
SELECT carrid
connid
fldate
price
currency
seatsmax
seatsocc
FROM sflight
INTO TABLE t_sflight.
* WHERE carrid = p_carrid
* and connid = p_connid.
ENDFORM. " selection
*& Form open_form
* text
* --> p1 text
* <-- p2 text
FORM open_form .
fs_options-tdcopies = 2.
fs_options-tddest = 'LP01'.
fs_options-tdpreview = 'X'.
fs_options-tdnoprint = 'X'.
CALL FUNCTION 'OPEN_FORM'
EXPORTING
* APPLICATION = 'TX'
* ARCHIVE_INDEX =
* ARCHIVE_PARAMS =
* DEVICE = 'PRINTER'
dialog = ' '
* form = 'FORM1'
* LANGUAGE = SY-LANGU
options = fs_options
* MAIL_SENDER =
* MAIL_RECIPIENT =
* MAIL_APPL_OBJECT =
* RAW_DATA_INTERFACE = '*'
* IMPORTING
* LANGUAGE =
* NEW_ARCHIVE_PARAMS =
* RESULT =
EXCEPTIONS
canceled = 1
device = 2
form = 3
options = 4
unclosed = 5
mail_options = 6
archive_error = 7
invalid_fax_number = 8
more_params_needed_in_batch = 9
spool_error = 10
codepage = 11
OTHERS = 12
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " open_form
*& Form write_form
* text
* --> p1 text
* <-- p2 text
FORM write_form .
CALL FUNCTION 'WRITE_FORM'
EXPORTING
element = 'FLIGHTINFO'
* FUNCTION = 'SET'
* TYPE = 'BODY'
* WINDOW = 'MAIN'
* IMPORTING
* PENDING_LINES =
EXCEPTIONS
element = 1
function = 2
type = 3
unopened = 4
unstarted = 5
window = 6
bad_pageformat_for_print = 7
spool_error = 8
codepage = 9
OTHERS = 10
IF sy-subrc <> 0.
WRITE 'Write_Error'.
ENDIF.
ENDFORM. " write_form
*& Form close_form
* text
* --> p1 text
* <-- p2 text
FORM close_form .
CALL FUNCTION 'CLOSE_FORM'
* IMPORTING
* RESULT =
* RDI_RESULT =
* TABLES
* OTFDATA =
* EXCEPTIONS
* UNOPENED = 1
* BAD_PAGEFORMAT_FOR_PRINT = 2
* SEND_ERROR = 3
* SPOOL_ERROR = 4
* CODEPAGE = 5
* OTHERS = 6
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " close_form
*& Form start_form
* text
* --> p1 text
* <-- p2 text
FORM start_form .
CALL FUNCTION 'START_FORM'
EXPORTING
* ARCHIVE_INDEX =
form = 'FORM1'
* LANGUAGE = ' '
* STARTPAGE = ' '
* PROGRAM = ' '
* MAIL_APPL_OBJECT =
* IMPORTING
* LANGUAGE =
EXCEPTIONS
form = 1
format = 2
unended = 3
unopened = 4
unused = 5
spool_error = 6
codepage = 7
OTHERS = 8
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " start_form
*& Form end_form
* text
* --> p1 text
* <-- p2 text
FORM end_form .
CALL FUNCTION 'END_FORM'
* IMPORTING
* RESULT =
EXCEPTIONS
unopened = 1
bad_pageformat_for_print = 2
spool_error = 3
codepage = 4
OTHERS = 5
IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
* WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
ENDIF.
ENDFORM. " end_form
Regards,
Swapna.
Edited by: NagaSwapna Thota on Jul 4, 2008 9:14 AM -
How to speed up my code inside the for loops,
how to speed up my code inside the for loops using c# WinForm.
Hi John,
Please take a look at the reply from Wyck in the following thread.
How to speed up for loop?
His answer is very comprehensive. Thanks.
Best regards,
kristin
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HERE to participate the survey. -
Commit after every three UPDATEs in CURSOR FOR loop
DB Version: 11g
I know that experts in here despise the concept of COMMITing inside loop.
But most of the UPDATEs being fired by the code below are updating around 1 million records and it is breaking our UNDO tablespace.
begin
for rec in
(select owner,table_name,column_name
from dba_tab_cols where column_name like 'ABCD%' and owner = p_schema_name)
loop
begin
execute immediate 'update '||rec.owner||'.'||rec.table_name||' set '||rec.column_name|| ' = '''||rec.owner||'';
end;
end loop;
end;We are not expecting ORA-01555 error as these are just batch updates.
I was thinking of implementing something like
FOR i IN 1..myarray.count
LOOP
DBMS_OUTPUT.PUT_LINE('event_key at' || i || ' is: ' || myarray(i));
INSERT INTO emp
empid,
event_id,
dept,
event_key
VALUES
v_empid,
3423,
p_dept,
myarray(i)
if(MOD(i, p_CommitFreq) = 0) --- When the loop counter becomes fully divisible by p_commit_frequency, it COMMITs
then
commit;
end if;
END LOOP;(Found from an OTN thread)
But i don't know how to access the loop counter value in a CURSOR FOR loop.To be fair, what is really despised is code that takes an operation that could have been performed in a single SQL statement and steps through it in the slowest possible way, committing pointlessly as it goes along (exactly like the example you found). Your original version doesn't do that - it looks more like some sort of one-off migration where you have to set every value of every column that matches some naming standard pattern to a constant. If that's the case, and if there are huge volumes involved and you can't simply add a bit more undo, then I don't see much wrong with committing after each update, especially if you track how far you've got so you can restart cleanly if it fails.
If you really want an incrementing counter in an unnamed cursor, apart from the explicit variable others have suggested, you could add rownum to the cursor (alias it to something that isn't an Oracle keyword), although it could complicate the ORDER BY that you might be considering for the restart logic. You could have that instead of the redundant 'owner' column in your example which is always the same as the constant p_schema_name.
Another approach would be to keep track of SQL%ROWCOUNT after each update by adding it to a variable, and commit when the total number of rows updated so far reaches, say, a million.
Could the generated statement use a WHERE clause, or does it really have to update every row in every table it finds?
Could there be more than one column to update per table? If so it might be worth generating one multi-column update statement per table, although it'll complicate things a bit.
btw you don't need the inner 'begin' and 'end' keywords, and whoever supplied the MOD example you found should know that three or four spaces usually make a good indent and you don't need brackets around IF conditions. -
Select statement in a for loop
Hi all,
Can a select stmt be used in the body of the for loop/ nested for loop ?
I tries using (even if its very simple for loop) it gives the following error
PL/SQL: ORA-00933: SQL command not properly ended...
code is
DECLARE
CURSOR C1 is select 'Monday' from dual
union all
select 'Tuesday' from dual
union all
select 'Wednesday' from dual
union all
select 'Thursday' from dual
union all
select 'Friday' from dual
union all
select 'Saturday' from dual
union all
select 'Sunday' from dual;
type rec_info is record
name varchar2(20),
FNAME varchar2(20),
LNAME varchar2(20)
type ty_info is table of rec_info;
info ty_info;
type rec_abc is record
day varchar2(3000)
type ty_abc is table of rec_abc;
abc ty_abc;
Cursor C2 is
select t.name, u.first_name, u.last_name
from territories t, users u, territories_users tu
where t.ID = tu.TERRITORY_ID
and tu.USER_ID = u.ID ;
BEGIN
OPEN C1;
Loop
FETCH C1 into abc;
EXIT when C1%notfound;
DBMS_OUTPUT.PUT_LINE(abc);
END LOOP;
CLOSE C1;
OPEN C2;
FETCH C2 BULK COLLECT into info;
CLOSE C2;
for i in info.first .. info.last
LOOP
for j in abc.first .. abc.last
LOOP
select --info(i).name, info(i).FNAME, info(i),LNAME,'AM' "AM/PM",
to_char(c.name)||' '||ct.PRIMARY_ADDRESS_CITY||','||ct.PRIMARY_ADDRESS_STATE||','||ct.PRIMARY_ADDRESS_COUNTRY
from
territories t, territories_users tu,
users u, calls_users cu, calls c,
calls_contacts cc, contacts ct
where
tu.TERRITORY_ID = t.id
and t.name = info(i).name
and u.first_name = info(i).FNAME
and u.last_name = info(i).LNAME
and (c.date_start between trim(next_day(sysdate,abc(j).day)) and trim(next_day(sysdate,abc(j).day)))
and tu.USER_ID = u.id
and cu.USER_ID = u.id
and cu.CALL_ID = c.id
and to_char(c.time_start,'hh24') < '12'
and cc.CALL_ID = c.ID
and cc.CONTACT_ID = ct.id
and rownum < 2
END LOOP;
END LOOP;
END;"Can a select stmt be used in the body of the for loop/ nested for loop "
Yes.... but with an INTO part.....
select c1 , c2 , c3 into var1 , var2 , var3 from table1
Sim -
If statement doesn't affect for loop
I wrote a function within a function to control 2 Tweens.
(the 2nd one isnt in the function, it's called)
My problem is... is that it works for the first time.. the button is hovered over and all the other buttons show themselves and then disappear again, except the one you're over. Then I do it a 2nd time and it doesn't work. why is it only working right one time? and why isn't the if statement I put in the local function affecting the for loop? The 2nd time it takes the button you're hovering over with it and fades it out. (even though the if statement registers according to trace)
this is the code
import fl.transitions.Tween;
import fl.transitions.easing.*;
var shortInst:Array = [btn1, btn2, btn3, exit];
var objTween:Tween;
function mouseOff(e:Event):void {
if (e.currentTarget.alpha !== 0) {
objTween = new Tween(e.currentTarget, "alpha", None.easeOut, 1, 0, 0.25, true);
var eTimer:Timer = new Timer(3000, 1); //timer that only runs once (in ms)
function navFX(e:Event):void {
for (var i:Number = 0; i < shortInst.length; i++) {
objTween = new Tween(shortInst[i], "alpha", None.easeOut, 0, 1, 0.25, true);
eTimer.addEventListener(TimerEvent.TIMER, local);
eTimer.start();
function local(t:TimerEvent):void {
trace("e.target in local func: " + e.target);
for (var i:Number = 0; i < shortInst.length; i++) {
if (shortInst[i] !== e.target) {
shortInst[i].dispatchEvent(new Event(MouseEvent.MOUSE_OUT));is this what you want?
import fl.transitions.Tween;
import fl.transitions.easing.*;
var shortInst:Array = [btn1,btn2,btn3,exit];
var objTween:Tween;
function mouseOff(e:Event):void
if (e.currentTarget.alpha !== 0)
objTween = new Tween(e.currentTarget,"alpha",None.easeOut,1,0,0.25,true);
function navFX(e:Event):void
var eTimer:Timer = new Timer(3000,1); // <- moved that line here
for (var i:Number = 0; i < shortInst.length; i++)
objTween = new Tween(shortInst[i],"alpha",None.easeOut,0,1,0.25,true);
eTimer.addEventListener(TimerEvent.TIMER, local);
eTimer.start();
function local(t:TimerEvent):void
trace("e.target in local func: " + e.target);
for (var i:Number = 0; i < shortInst.length; i++)
if (shortInst[i] !== e.target)
shortInst[i].dispatchEvent(new Event(MouseEvent.MOUSE_OUT));
for (var i:Number = 0; i < shortInst.length; i++)
shortInst[i].alpha = 0;
shortInst[i].addEventListener(MouseEvent.MOUSE_OVER, navFX);
shortInst[i].addEventListener(MouseEvent.MOUSE_OUT, mouseOff); -
Need help with retrieving data in vector using for-loop
ok for my code, i type in String name, password, phone number and int currentsalary and desiredsalary into the textfields and click Add, and it goes into the vector and name appears on the JList ApplicantList.
what do i add to my listselectionlistener so that by clicking on the name, i can display the details of the person whose name is in the list, back on the texfields?
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.text.*;
import java.util.*;
import java.util.Vector;
import javax.swing.JScrollPane.*;
import javax.swing.event.ListSelectionListener;
public class Employment extends JFrame
//declare class variables
private JPanel jpApplicant, jpEverything,jpWEST, jpCENTRE, jpEAST, jpAddEditDelete,
jpCentreTOP, jpCentreBOT, jpEastTOP, jpEastCENTRE, jpEastBOT,
jpBlank1, panel1, panel2, panel3, panel4;
private JLabel jlblApplicantForm, jlblAppList, jlblName, jlblPhone,
jlblCurrentSalary, jlblPassword, jlblDesiredSalary,
jlblNotes, jlblApplicantSkills, jlblIndustrySkills,
jlblBlank1, jlblBlank2;
private JButton jbtnAdd1, jbtnEdit, jbtnDelete, jbtnSave, jbtnCancel,
jbtnAdd2, jbtnRemove;
private JTextField jtfName, jtfPhone, jtfCurrentSalary, jtfPassword,
jtfDesiredSalary;
String name,password,phone,currentsalary,desiredsalary,textareastuff;
String selectedname;
private JTabbedPane tabbedPane;
private DefaultListModel listModel,listModel2;
private ListSelectionModel listSelectionModel;
JList ApplicantList, ApplicantSkillsList, IndustrySkillsList;
protected JTextArea NotesList;
Label ApplicantListLabel, NotesListLabel, ApplicantSkillsLabel,
IndustrySkillsLabel;
Vector details = new Vector();
public static void main(String []args)
Employment f = new Employment();
f.setVisible(true);
f.setDefaultCloseOperation(EXIT_ON_CLOSE);
f.setResizable(false);
}//end of main
public Employment()
setSize(800,475);
setTitle("E-commerce Placement Agency");
JPanel topPanel = new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add( topPanel );
createPage1();
createPage2();
createPage3();
createPage4();
tabbedPane = new JTabbedPane();
tabbedPane.addTab( "Applicant", panel1 );
tabbedPane.addTab( "Job Order", panel2 );
tabbedPane.addTab( "Skill", panel3 );
tabbedPane.addTab( "Company", panel4 );
topPanel.add( tabbedPane, BorderLayout.CENTER );
public void createPage1()//PAGE 1
panel1 = new JPanel();
panel1.setLayout( new BorderLayout());
jpApplicant= new JPanel();
jpApplicant.setLayout(new BorderLayout());
Font bigFont = new Font("TimesRoman", Font.BOLD,24);
jlblApplicantForm = new JLabel("\t\t\t\tAPPLICANT FORM ");
jlblApplicantForm.setFont(bigFont);
jpApplicant.add(jlblApplicantForm,BorderLayout.EAST);
panel1.add(jpApplicant,BorderLayout.NORTH);
/*****************************************WEST*********************************/
jpWEST = new JPanel();
jpWEST.setLayout( new BorderLayout());
//Applicant List
listModel2=new DefaultListModel();
ApplicantList = new JList(listModel2);
listSelectionModel = ApplicantList.getSelectionModel();
listSelectionModel.addListSelectionListener(new SharedListSelectionHandler());
JScrollPane scrollPane3 = new JScrollPane(ApplicantList);
ApplicantListLabel = new Label( "Applicant List:");
jpWEST.add(ApplicantListLabel,"North");
jpWEST.add(scrollPane3,"Center");
panel1.add(jpWEST,BorderLayout.WEST);
/*********CENTRE*********/
jpCENTRE = new JPanel();
jpCENTRE.setLayout(new GridLayout(2,1));
jpCentreTOP = new JPanel();
panel1.add(jpCENTRE,BorderLayout.CENTER);
jpCENTRE.add(jpCentreTOP);
jpCentreTOP.setLayout(new GridLayout(6,2));
jlblName = new JLabel( "Name:");
jlblBlank1 = new JLabel ("");
jtfName = new JTextField(18);
jlblBlank2 = new JLabel("");
jlblPhone = new JLabel("Phone:");
jlblCurrentSalary = new JLabel("Current Salary:");
jtfPhone = new JTextField(13);
jtfCurrentSalary = new JTextField(7);
jlblPassword = new JLabel("Password:");
jlblDesiredSalary = new JLabel("Desired Salary:");
jtfPassword = new JTextField(13);
jtfDesiredSalary = new JTextField(6);
jpCentreTOP.add(jlblName);
jpCentreTOP.add(jlblBlank1);
jpCentreTOP.add(jtfName);
jpCentreTOP.add(jlblBlank2);
jpCentreTOP.add(jlblPhone);
jpCentreTOP.add(jlblCurrentSalary);
jpCentreTOP.add(jtfPhone);
jpCentreTOP.add(jtfCurrentSalary);
jpCentreTOP.add(jlblPassword);
jpCentreTOP.add(jlblDesiredSalary);
jpCentreTOP.add(jtfPassword);
jpCentreTOP.add(jtfDesiredSalary);
//Noteslist
jpCentreBOT = new JPanel();
jpCentreBOT.setLayout( new BorderLayout());
jpCENTRE.add(jpCentreBOT);
jpBlank1 = new JPanel();
JTextArea Noteslist=new JTextArea();
JScrollPane scroll3=new JScrollPane(Noteslist);
scroll3.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scroll3.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
//scroll3.setSize(new Dimension(1,1));
NotesListLabel = new Label( "Notes:");
jpCentreBOT.add(NotesListLabel,"North");
jpCentreBOT.add(scroll3,"Center");
jpCentreBOT.add(jpBlank1,"South");
panel1.add(jpCENTRE,BorderLayout.CENTER);
/**********EAST**********/
//Applicant Skills Panel
//EAST ==> TOP
jpEAST = new JPanel();
jpEAST.setLayout( new BorderLayout());
jpEastTOP = new JPanel();
jpEastTOP.setLayout( new BorderLayout());
listModel = new DefaultListModel();
ApplicantSkillsList = new JList(listModel);
ApplicantSkillsLabel = new Label( "Applicant Skills");
// JScrollPane scrollPane1 = new JScrollPane(ApplicantSkillsList,
// JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JScrollPane scrollPane1 = new JScrollPane(ApplicantSkillsList);
scrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
ApplicantSkillsList.setVisibleRowCount(6);
jpEastTOP.add(ApplicantSkillsLabel,"North");
// ApplicantSkillsList.addItemListener(new selectNameListener());
jpEastTOP.add(scrollPane1,"Center");
jpEAST.add(jpEastTOP,BorderLayout.NORTH);
panel1.add(jpEAST,BorderLayout.EAST);
//Add & Remove Buttons
//EAST ==> CENTRE
jpEastCENTRE = new JPanel();
jpEAST.add(jpEastCENTRE,BorderLayout.CENTER);
jbtnAdd2 = new JButton("Add");
jbtnRemove = new JButton("Remove");
//add buttons to panel
jpEastCENTRE.add(jbtnAdd2);
jpEastCENTRE.add(jbtnRemove);
//add listener to button
jbtnAdd2.addActionListener(new Add2Listener());
jbtnRemove.addActionListener(new RemoveListener());
//Industry Skills Panel
//EAST ==> BOTTOM
jpEastBOT = new JPanel();
jpEastBOT.setLayout( new BorderLayout());
String[] data = {"Access97", "Basic Programming",
"C++ Programming", "COBOL Programming",
"DB Design", "Fortran programming"};
IndustrySkillsList = new JList(data);
JScrollPane scrollPane = new JScrollPane(IndustrySkillsList);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
IndustrySkillsLabel = new Label( "Industry Skills:");
jpEastBOT.add(IndustrySkillsLabel,"North");
jpEastBOT.add(scrollPane,"Center");
jpEAST.add(jpEastBOT,BorderLayout.SOUTH);
//BOTTOM
jpAddEditDelete= new JPanel();
jbtnAdd1= new JButton("Add");
jbtnEdit= new JButton("Edit");
jbtnDelete= new JButton("Delete");
jbtnSave= new JButton("Save");
jbtnCancel= new JButton("Cancel");
jpAddEditDelete.add(jbtnAdd1);
jpAddEditDelete.add(jbtnEdit);
jpAddEditDelete.add(jbtnDelete);
jpAddEditDelete.add(jbtnSave);
jpAddEditDelete.add(jbtnCancel);
//jbtnEdit.addActionListener(new EditListener());
jbtnAdd1.addActionListener(new Add1Listener());
jbtnCancel.addActionListener(new CancelListener());
panel1.add(jpAddEditDelete,BorderLayout.SOUTH);
public void createPage2()//PAGE 2
panel2 = new JPanel();
panel2.setLayout( new GridLayout(1,1) );
panel2.add( new JLabel( "Sorry,under construction" ) );
public void createPage3()//PAGE 3
panel3 = new JPanel();
panel3.setLayout( new GridLayout( 1, 1 ) );
panel3.add( new JLabel( "Sorry,under construction" ) );
public void createPage4()//PAGE 4
panel4 = new JPanel();
panel4.setLayout( new GridLayout( 1, 1 ) );
panel4.add( new JLabel( "Sorry,under construction" ) );
public class Add1Listener implements ActionListener
public void actionPerformed(ActionEvent e)
//String name,password,phone,currentsalary,desiredsalary,textareastuff;
name = jtfName.getText();
password = jtfPassword.getText();
phone = jtfPhone.getText();
currentsalary = jtfCurrentSalary.getText();
int i= Integer.parseInt(currentsalary);
desiredsalary = jtfDesiredSalary.getText();
int j= Integer.parseInt(desiredsalary);
StoringData person = new StoringData(name,password,phone,i,j);
//textareastuff = NotesList.getText();
details.add(person);
listModel2.addElement(name);
jtfName.setText("");
jtfPassword.setText("");
jtfPhone.setText("");
jtfCurrentSalary.setText("");
jtfDesiredSalary.setText("");
// NotesList.setText("");
// NotesList.append("");
// details.addElement(name);
public class Add2Listener implements ActionListener
public void actionPerformed(ActionEvent e)
String temp1;
temp1 = (String)IndustrySkillsList.getSelectedValue();
listModel.addElement(temp1);
public class RemoveListener implements ActionListener
public void actionPerformed(ActionEvent e)
int index = ApplicantSkillsList.getSelectedIndex();
listModel.remove(index);
public class EditListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class DeleteListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class SaveListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class CancelListener implements ActionListener
public void actionPerformed(ActionEvent e)
jtfName.setText("");
jtfPassword.setText("");
jtfPhone.setText("");
jtfCurrentSalary.setText("");
jtfDesiredSalary.setText("");
public class SharedListSelectionHandler implements ListSelectionListener
public void valueChanged(ListSelectionEvent e)
selectedname =ApplicantList.getSelectedValue().toString();
// ListSelectionModel lsm = (ListSelectionModel)e.getSource();
System.out.println(selectedname);
// for(selectedname==n)
// System.out.println(ApplicantList.getSelectedValue().toString());
// jtfName.setText(n);
//int firstIndex = e.getFirstIndex();
//int lastIndex = e.getLastIndex();
//boolean isAdjusting = e.getValueIsAdjusting();
/*if (lsm.isSelectionEmpty())
System.out.println("hahahhaa");
} else {
// Find out which indexes are selected.
/*int minIndex = lsm.getMinSelectionIndex();
int maxIndex = lsm.getMaxSelectionIndex();
/*for (int i = minIndex; i <= maxIndex; i++)
/* if (lsm.isSelectedIndex(i))
System.out.println("hohoho");
System.out.println("haho");*/
}ok i added that part inside my listselectionlistener
it says incompatible types in line 421.
and where do i insert :
StoringData selectedPerson = detailMap.get(selectedName)
and/or
StoringData selectedPerson = ApplicantList.getSelectedValue()
this is what the code looks like after i added the loop u gave me
import java.awt.*;
import java.awt.event.*;
import javax.swing.*;
import javax.swing.event.*;
import java.text.*;
import java.util.*;
import java.util.Vector;
import javax.swing.JScrollPane.*;
//import javax.swing.event.ListSelectionListener;
public class Employment extends JFrame
//declare class variables
private JPanel jpApplicant, jpEverything,jpWEST, jpCENTRE, jpEAST, jpAddEditDelete,
jpCentreTOP, jpCentreBOT, jpEastTOP, jpEastCENTRE, jpEastBOT,
jpBlank1, panel1, panel2, panel3, panel4;
private JLabel jlblApplicantForm, jlblAppList, jlblName, jlblPhone,
jlblCurrentSalary, jlblPassword, jlblDesiredSalary,
jlblNotes, jlblApplicantSkills, jlblIndustrySkills,
jlblBlank1, jlblBlank2;
private JButton jbtnAdd1, jbtnEdit, jbtnDelete, jbtnSave, jbtnCancel,
jbtnAdd2, jbtnRemove;
private JTextField jtfName, jtfPhone, jtfCurrentSalary, jtfPassword,
jtfDesiredSalary;
String name,password,phone,currentsalary,desiredsalary,textareastuff;
String selectedname;
private JTabbedPane tabbedPane;
private DefaultListModel listModel,listModel2;
private ListSelectionModel listSelectionModel;
JList ApplicantList, ApplicantSkillsList, IndustrySkillsList;
protected JTextArea NotesList;
Label ApplicantListLabel, NotesListLabel, ApplicantSkillsLabel,
IndustrySkillsLabel;
Vector details = new Vector();
public static void main(String []args)
Employment f = new Employment();
f.setVisible(true);
f.setDefaultCloseOperation(EXIT_ON_CLOSE);
f.setResizable(false);
}//end of main
public Employment()
setSize(800,475);
setTitle("E-commerce Placement Agency");
JPanel topPanel = new JPanel();
topPanel.setLayout( new BorderLayout() );
getContentPane().add( topPanel );
createPage1();
createPage2();
createPage3();
createPage4();
tabbedPane = new JTabbedPane();
tabbedPane.addTab( "Applicant", panel1 );
tabbedPane.addTab( "Job Order", panel2 );
tabbedPane.addTab( "Skill", panel3 );
tabbedPane.addTab( "Company", panel4 );
topPanel.add( tabbedPane, BorderLayout.CENTER );
public void createPage1()//PAGE 1
panel1 = new JPanel();
panel1.setLayout( new BorderLayout());
jpApplicant= new JPanel();
jpApplicant.setLayout(new BorderLayout());
Font bigFont = new Font("TimesRoman", Font.BOLD,24);
jlblApplicantForm = new JLabel("\t\t\t\tAPPLICANT FORM ");
jlblApplicantForm.setFont(bigFont);
jpApplicant.add(jlblApplicantForm,BorderLayout.EAST);
panel1.add(jpApplicant,BorderLayout.NORTH);
/*****************************************WEST*********************************/
jpWEST = new JPanel();
jpWEST.setLayout( new BorderLayout());
//Applicant List
listModel2=new DefaultListModel();
ApplicantList = new JList(listModel2);
listSelectionModel = ApplicantList.getSelectionModel();
listSelectionModel.addListSelectionListener(new SharedListSelectionHandler());
JScrollPane scrollPane3 = new JScrollPane(ApplicantList);
ApplicantListLabel = new Label( "Applicant List:");
jpWEST.add(ApplicantListLabel,"North");
jpWEST.add(scrollPane3,"Center");
panel1.add(jpWEST,BorderLayout.WEST);
/*********CENTRE*********/
jpCENTRE = new JPanel();
jpCENTRE.setLayout(new GridLayout(2,1));
jpCentreTOP = new JPanel();
panel1.add(jpCENTRE,BorderLayout.CENTER);
jpCENTRE.add(jpCentreTOP);
jpCentreTOP.setLayout(new GridLayout(6,2));
jlblName = new JLabel( "Name:");
jlblBlank1 = new JLabel ("");
jtfName = new JTextField(18);
jlblBlank2 = new JLabel("");
jlblPhone = new JLabel("Phone:");
jlblCurrentSalary = new JLabel("Current Salary:");
jtfPhone = new JTextField(13);
jtfCurrentSalary = new JTextField(7);
jlblPassword = new JLabel("Password:");
jlblDesiredSalary = new JLabel("Desired Salary:");
jtfPassword = new JTextField(13);
jtfDesiredSalary = new JTextField(6);
jpCentreTOP.add(jlblName);
jpCentreTOP.add(jlblBlank1);
jpCentreTOP.add(jtfName);
jpCentreTOP.add(jlblBlank2);
jpCentreTOP.add(jlblPhone);
jpCentreTOP.add(jlblCurrentSalary);
jpCentreTOP.add(jtfPhone);
jpCentreTOP.add(jtfCurrentSalary);
jpCentreTOP.add(jlblPassword);
jpCentreTOP.add(jlblDesiredSalary);
jpCentreTOP.add(jtfPassword);
jpCentreTOP.add(jtfDesiredSalary);
//Noteslist
jpCentreBOT = new JPanel();
jpCentreBOT.setLayout( new BorderLayout());
jpCENTRE.add(jpCentreBOT);
jpBlank1 = new JPanel();
JTextArea Noteslist=new JTextArea();
JScrollPane scroll3=new JScrollPane(Noteslist);
scroll3.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scroll3.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
//scroll3.setSize(new Dimension(1,1));
NotesListLabel = new Label( "Notes:");
jpCentreBOT.add(NotesListLabel,"North");
jpCentreBOT.add(scroll3,"Center");
jpCentreBOT.add(jpBlank1,"South");
panel1.add(jpCENTRE,BorderLayout.CENTER);
/**********EAST**********/
//Applicant Skills Panel
//EAST ==> TOP
jpEAST = new JPanel();
jpEAST.setLayout( new BorderLayout());
jpEastTOP = new JPanel();
jpEastTOP.setLayout( new BorderLayout());
listModel = new DefaultListModel();
ApplicantSkillsList = new JList(listModel);
ApplicantSkillsLabel = new Label( "Applicant Skills");
// JScrollPane scrollPane1 = new JScrollPane(ApplicantSkillsList,
// JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
JScrollPane scrollPane1 = new JScrollPane(ApplicantSkillsList);
scrollPane1.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane1.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
ApplicantSkillsList.setVisibleRowCount(6);
jpEastTOP.add(ApplicantSkillsLabel,"North");
// ApplicantSkillsList.addItemListener(new selectNameListener());
jpEastTOP.add(scrollPane1,"Center");
jpEAST.add(jpEastTOP,BorderLayout.NORTH);
panel1.add(jpEAST,BorderLayout.EAST);
//Add & Remove Buttons
//EAST ==> CENTRE
jpEastCENTRE = new JPanel();
jpEAST.add(jpEastCENTRE,BorderLayout.CENTER);
jbtnAdd2 = new JButton("Add");
jbtnRemove = new JButton("Remove");
//add buttons to panel
jpEastCENTRE.add(jbtnAdd2);
jpEastCENTRE.add(jbtnRemove);
//add listener to button
jbtnAdd2.addActionListener(new Add2Listener());
jbtnRemove.addActionListener(new RemoveListener());
//Industry Skills Panel
//EAST ==> BOTTOM
jpEastBOT = new JPanel();
jpEastBOT.setLayout( new BorderLayout());
String[] data = {"Access97", "Basic Programming",
"C++ Programming", "COBOL Programming",
"DB Design", "Fortran programming"};
IndustrySkillsList = new JList(data);
JScrollPane scrollPane = new JScrollPane(IndustrySkillsList);
scrollPane.setHorizontalScrollBarPolicy(JScrollPane.HORIZONTAL_SCROLLBAR_NEVER);
scrollPane.setVerticalScrollBarPolicy(JScrollPane.VERTICAL_SCROLLBAR_ALWAYS);
IndustrySkillsLabel = new Label( "Industry Skills:");
jpEastBOT.add(IndustrySkillsLabel,"North");
jpEastBOT.add(scrollPane,"Center");
jpEAST.add(jpEastBOT,BorderLayout.SOUTH);
//BOTTOM
jpAddEditDelete= new JPanel();
jbtnAdd1= new JButton("Add");
jbtnEdit= new JButton("Edit");
jbtnDelete= new JButton("Delete");
jbtnSave= new JButton("Save");
jbtnCancel= new JButton("Cancel");
jpAddEditDelete.add(jbtnAdd1);
jpAddEditDelete.add(jbtnEdit);
jpAddEditDelete.add(jbtnDelete);
jpAddEditDelete.add(jbtnSave);
jpAddEditDelete.add(jbtnCancel);
//jbtnEdit.addActionListener(new EditListener());
jbtnAdd1.addActionListener(new Add1Listener());
jbtnCancel.addActionListener(new CancelListener());
panel1.add(jpAddEditDelete,BorderLayout.SOUTH);
public void createPage2()//PAGE 2
panel2 = new JPanel();
panel2.setLayout( new GridLayout(1,1) );
panel2.add( new JLabel( "Sorry,under construction" ) );
public void createPage3()//PAGE 3
panel3 = new JPanel();
panel3.setLayout( new GridLayout( 1, 1 ) );
panel3.add( new JLabel( "Sorry,under construction" ) );
public void createPage4()//PAGE 4
panel4 = new JPanel();
panel4.setLayout( new GridLayout( 1, 1 ) );
panel4.add( new JLabel( "Sorry,under construction" ) );
public class Add1Listener implements ActionListener
public void actionPerformed(ActionEvent e)
//String name,password,phone,currentsalary,desiredsalary,textareastuff;
name = jtfName.getText();
password = jtfPassword.getText();
phone = jtfPhone.getText();
currentsalary = jtfCurrentSalary.getText();
int i= Integer.parseInt(currentsalary);
desiredsalary = jtfDesiredSalary.getText();
int j= Integer.parseInt(desiredsalary);
StoringData person = new StoringData(name,password,phone,i,j);
//textareastuff = NotesList.getText();
details.add(person);
listModel2.addElement(name);
jtfName.setText("");
jtfPassword.setText("");
jtfPhone.setText("");
jtfCurrentSalary.setText("");
jtfDesiredSalary.setText("");
// NotesList.setText("");
// NotesList.append("");
// details.addElement(name);
public class Add2Listener implements ActionListener
public void actionPerformed(ActionEvent e)
String temp1;
temp1 = (String)IndustrySkillsList.getSelectedValue();
listModel.addElement(temp1);
public class RemoveListener implements ActionListener
public void actionPerformed(ActionEvent e)
int index = ApplicantSkillsList.getSelectedIndex();
listModel.remove(index);
public class EditListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class DeleteListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class SaveListener implements ActionListener
public void actionPerformed(ActionEvent e)
public class CancelListener implements ActionListener
public void actionPerformed(ActionEvent e)
jtfName.setText("");
jtfPassword.setText("");
jtfPhone.setText("");
jtfCurrentSalary.setText("");
jtfDesiredSalary.setText("");
public class SharedListSelectionHandler implements ListSelectionListener
public void valueChanged(ListSelectionEvent e)
selectedname =ApplicantList.getSelectedValue().toString();
StoringData selectedPerson = null;
for (StoringData person : details)
if (person.getName1().equals(selectedname))
selectedPerson = person;
break;
if (selectedPerson != null)
// set the relevant fields
// ListSelectionModel lsm = (ListSelectionModel)e.getSource();
// System.out.println(selectedname);
// for(selectedname==n)
// System.out.println(ApplicantList.getSelectedValue().toString());
// jtfName.setText(n);
//int firstIndex = e.getFirstIndex();
//int lastIndex = e.getLastIndex();
//boolean isAdjusting = e.getValueIsAdjusting();
/*if (lsm.isSelectionEmpty())
System.out.println("hahahhaa");
} else {
// Find out which indexes are selected.
/*int minIndex = lsm.getMinSelectionIndex();
int maxIndex = lsm.getMaxSelectionIndex();
/*for (int i = minIndex; i <= maxIndex; i++)
/* if (lsm.isSelectedIndex(i))
System.out.println("hohoho");
System.out.println("haho");*/
} -
Help with Mathscipt and for loop
I have a code in Mathscript/matlab and I need to output the array out. One option is my first code,the other option is using a for loop, but I am only getting the last ouput out. I need to get the whole output out.
Any help.
Thanks
Solved!
Go to Solution.
Attachments:
Help with Mathscript_for loop.vi 115 KB
Help with Mathscript_for loop2.vi 84 KBHere's how it should look like.
Message Edited by altenbach on 10-30-2008 05:12 PM
LabVIEW Champion . Do more with less code and in less time .
Attachments:
MathscriptInFOR.png 15 KB -
Hi All
So in general why would we use a cursor and a for loop to do update in a stored procedure?
Why wouldnt we just use a single update statement ?
is there compelling reason for using a cursor and a for loop: I am reading some code from a co-worker that the business logic for the select (set need to be updated) is complex but the update logic is simple (just set a flag to (0 or 1 or 2 or 3 or 4).
But eventually the select come down to a key (row_id) so I re-write it using just a single sql statement.
The size of the main table is about 2.6 to 3million rows
Any thoughts on that??
The code below I just do a google for cursor for update example in case for something to play with
-Thanks for all your input
create table f (a number, b varchar2(10));
insert into f values (5,'five');
insert into f values (6,'six');
insert into f values (7,'seven');
insert into f values (8,'eight');
insert into f values (9,'nine');
commit;
create or replace procedure wco as
cursor c_f is
select a,b from f where length(b) = 5 for update;
v_a f.a%type;
v_b f.b%type;
begin
open c_f;
loop
fetch c_f into v_a, v_b;
exit when c_f%notfound;
update f set a=v_a*v_a where current of c_f;
end loop;
close c_f;
end;
exec wco;
select * from f;
drop table f;
drop procedure wco;
Joining multiple tables
create table numbers_en (
id_num number primary key,
txt_num varchar2(10)
insert into numbers_en values (1, 'one' );
insert into numbers_en values (2, 'two' );
insert into numbers_en values (3, 'three');
insert into numbers_en values (4, 'four' );
insert into numbers_en values (5, 'five' );
insert into numbers_en values (6, 'six' );
create table lang (
id_lang char(2) primary key,
txt_lang varchar2(10)
insert into lang values ('de', 'german');
insert into lang values ('fr', 'french');
insert into lang values ('it', 'italian');
create table translations (
id_num references numbers_en,
id_lang references lang,
txt_trans varchar2(10) not null
insert into translations values (1, 'de', 'eins' );
insert into translations values (1, 'fr', 'un' );
insert into translations values (2, 'it', 'duo' );
insert into translations values (3, 'de', 'drei' );
insert into translations values (3, 'it', 'tre' );
insert into translations values (4, 'it', 'quattro');
insert into translations values (6, 'de', 'sechs' );
insert into translations values (6, 'fr', 'six' );
declare
cursor cur is
select id_num,
txt_num,
id_lang,
txt_lang,
txt_trans
from numbers_en join translations using(id_num)
left join lang using(id_lang)
for update of translations.txt_trans;
rec cur%rowtype;
begin
for rec in cur loop
dbms_output.put (
to_char (rec.id_num , '999') || ' - ' ||
rpad (rec.txt_num , 10 ) || ' - ' ||
rpad(nvl(rec.txt_trans, ' '), 10 ) || ' - ' ||
rec.id_lang || ' - ' ||
rpad (rec.txt_lang , 10 )
if mod(rec.id_num,2) = 0 then
update translations set txt_trans = upper(txt_trans)
where current of cur;
dbms_output.put_line(' updated');
else
dbms_output.new_line;
end if;
end loop;
end;
/Edited by: xwo0owx on Apr 25, 2011 11:23 AMAdding my sixpence...
PL/SQL is not that different from a SQL perspective than any other SQL client language like Java or C# or C/C++. PL/SQL simply integrates the 2 languages a heck of a lot better and far more transparent than the others. But make no mistake in that PL/SQL is also a "client" language from a SQL perspective. The (internal) calls PL/SQL make to the SQL engine, are the same (driver) calls made to the SQL engine when using Java and C and the others.
So why a cursor and loops in PL/SQL? For the same reason you have cursors and loops in all these other SQL client languages. There are the occasion that you need to pull data from the SQL engine into the local language to perform some very funky and complex processing that is not possible using the SQL language.
The danger is using client cursor loop processing as the norm - always pulling rows into the client language and crunching it there. This is not very performant. And pretty much impossible to scale. Developers in this case views the SQL language as a mere I/O interface for reading and writing rows. As they would use the standard file I/O read() and write() interface calls.
Nothing could be further from the truth. SQL is a very advance and sophisticated data processing language. And it will always be faster than having to pull rows to a client language and process them there. However, SQL is not Turing complete. It is not the procedural type language that most other languages we use, are. For that reason there are things that we cannot do in SQL. And that should be the only reason for using the client language, like PL/SQL or the others, to perform row crunching using a client cursor loop. -
How to add cursor and for loop
PROCEDURE "TEST" is
bala number;
ins1 number;
ins2 number;
BEGIN
select sum(bal) into bala from (select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum!='SG030001'
group by acp_instruid
union
select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum!='SG030001'
and acp_instruid=c_srm_prntinsid
group by acp_instruid)view1;
dbms_output.put_line(bala);
select acp_instruid into ins1 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001';
dbms_output.put_line('principal'||ins1);
select acp_instruid into ins2 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid;
dbms_output.put_line('parent'||ins2);
update cs_acpos_bkp
set acp_totbal=-bala
where acp_instruid=ins2
and acp_acntnum='SG030001';
END;
i have written this code,i need to use cursor and for loops to get more than one rows and update also.
if there are more than 1 rows in cs_strmap_t,then the procedure throws an error stating that it cannot take 2 rows.
Edited by: 850836 on Apr 7, 2011 11:43 PMPROCEDURE "TEST" is
bala number;
ins1 number;
ins2 number;
CURSOR cur_1 IS
select sum(bal) bala from (select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001'
group by acp_instruid
union
select sum(acp.acp_totbal) bal,acp_instruid from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid
group by acp_instruid)view1;
BEGIN
select acp_instruid into ins1 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and c_srm_prncplinsid=acp_instruid
and acp_acntnum='SG030001';
dbms_output.put_line('principal'||ins1);
select acp_instruid into ins2 from cs_strmap_t map,cs_instru_strips strip,cs_acpos_bkp acp
where c_int_instruid=c_srm_prncplinsid
and acp_acntnum='SG030001'
and acp_instruid=c_srm_prntinsid;
dbms_output.put_line('parent'||ins2);
for var_for in cur_1
loop
update cs_acpos_bkp
set acp_totbal=var_for.bala
where acp_instruid=ins2
and acp_acntnum='SG030001'
and abs(acp_totbal)>abs(bala);
dbms_output.put_line(bala);
end loop;
END;
i wrote the following procedure,but the balance is not getting updated.
Getting this errors when there are more than 1 row in cs_strmap_t table
ORA-01422: exact fetch returns more than requested number of rows
ORA-06512: line 22
ORA-06512: at line 2
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