Help with functional global
Thsi is my first time experementing with functional globals
Having been recomended to read this thread http://forums.ni.com/ni/board/message?board.id=170&message.id=240328&query.id=5387854#M240328
I have decided to start with just a functional global
(I like that term better as a FG should be just that, a global variable, and not perform any actions beyond holding data)
What I have is "VI-A" writing to the FG and "VI-B" reading the FG
The problem I am having is:
I can open the FG-VI in "VI-A" and see it updating.
If I open the FG-VI in "VI-B" the FG-VI is running but the controls and indicators are always in their default state and not being updated by VI-A
I have checked and checked and checked to make sure there is only one instance of the FG-VI on my machine.
I have even gone as far as dragging the FG-VI directly from the block diagram of "VI-A" to the block diagram of "VI-B"
Solved!
Go to Solution.
GerdW wrote:
Hi RTSLVU,
also throwing together two small test VIs to get rid of all your HW accesses, to show the FGV is working...
So maybe it wasn't a good idea to "I threw together the chg-cycle VI rather quickly, it's messy...". Remove the unwired default values and check again what's happening in your VIs!
Yeah well I am not using that VI anymre anyway, besides it was a quick and dirty test that worked fine the day I needed it... The origonal chg-cycle had the comunication VI's built in it. I was just using it to learn the FG concept. The idea I had was VI-A would run and continusly update so you could see what the UUT was doing and VI-B could pull in the data it needs from the FG... Like I do with my measurement instrument (The Measurments global in teh chg-cycle vi)
Anyway I changed the FG back to how I first made it (no unwired defaults), but it still does not work as expected. The read in VI-B is always empty
Attachments:
FG-1.png 46 KB
FG-2.png 43 KB
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[8i] Help with function with parameters (for workday calculation)
Let me start by saying, I've never written a function before, and I don't have access to create a function in my database (i.e. I can't test this function). I'm trying to come up with a function that I can ask my IT department to add for me. I'm hoping someone can take a look at what I've written and tell me if it should work or not, and if this is the right way to go about solving my problem.
I am trying to create a function to do a very simple workday calculation (adding/subtracting a particular number of workdays from a calendar date).
The database I'm working with has a table with the workday calendar in it. Here is a sample table and sample data, representative of what's in my workday calendar table:
CREATE TABLE caln
( clndr_dt DATE,
shop_days NUMBER(5)
CONSTRAINT caln_pk PRIMARY KEY (clndr_dt)
INSERT INTO caln
VALUES (To_Date('01/01/1980','mm/dd/yyyy'),0);
INSERT INTO caln
VALUES (To_Date('01/02/1980','mm/dd/yyyy'),1);
INSERT INTO caln
VALUES (To_Date('01/03/1980','mm/dd/yyyy'),2);
INSERT INTO caln
VALUES (To_Date('01/04/1980','mm/dd/yyyy'),3);
INSERT INTO caln
VALUES (To_Date('01/05/1980','mm/dd/yyyy'),3);
INSERT INTO caln
VALUES (To_Date('01/06/1980','mm/dd/yyyy'),3);
INSERT INTO caln
VALUES (To_Date('01/07/1980','mm/dd/yyyy'),4);
INSERT INTO caln
VALUES (To_Date('01/08/1980','mm/dd/yyyy'),5);
INSERT INTO caln
VALUES (To_Date('01/09/1980','mm/dd/yyyy'),6);
INSERT INTO caln
VALUES (To_Date('01/10/1980','mm/dd/yyyy'),7);
INSERT INTO caln
VALUES (To_Date('01/11/1980','mm/dd/yyyy'),8);
INSERT INTO caln
VALUES (To_Date('01/12/1980','mm/dd/yyyy'),8);
INSERT INTO caln
VALUES (To_Date('01/13/1980','mm/dd/yyyy'),8);
INSERT INTO caln
VALUES (To_Date('01/14/1980','mm/dd/yyyy'),9);The actual table includes from 1/1/1980 though 12/31/2015.
I've written (and validated) this parameter query which does my workday (mday) calculation:
SELECT cal.clndr_dt
FROM CALN cal
SELECT cal.shop_days+:mdays AS new_shop_days
FROM CALN cal
WHERE cal.clndr_dt =:start_date
) a
WHERE cal.shop_days = a.new_shop_days
AND ROWNUM =1
ORDER BY cal.clndr_dt;Based on this query, I've created the following function (and I have no clue if it works or if the syntax is right, etc.):
CREATE OR REPLACE FUNCTION add_mdays
(start_date IN DATE,
mdays IN NUMBER(5))
RETURN DATE
IS
new_date DATE;
BEGIN
SELECT cal.clndr_dt
FROM CALN cal
SELECT cal.shop_days+mdays AS new_shop_days
FROM CALN cal
WHERE cal.clndr_dt =start_date
) a
WHERE cal.shop_days = a.new_shop_days
AND ROWNUM =1
ORDER BY cal.clndr_dt;
RETURN new_date;
END add_mdays; //edit 9:31 AM - noticed I left off this bitI'm also not sure how to have the function handle results that would return a date outside of the date range that is in the table (Before 1/1/1980 or after 12/31/2015--or, another way to look at it is, before the MIN value of caln.clndr_dt or after the MAX value of caln.clndr_dt).
My goal is to be able to use the function in a situation like the following:
First, here's a sample table and data:
CREATE TABLE orders
( ord_no NUMBER(5),
plan_start_dt DATE,
CONSTRAINT orders_pk PRIMARY KEY (ord_no)
INSERT INTO orders
VALUES (1,To_Date('01/08/1980','mm/dd/yyyy'));
INSERT INTO orders
VALUES (2,To_Date('01/09/1980','mm/dd/yyyy'));
INSERT INTO orders
VALUES (3,To_Date('01/10/1980','mm/dd/yyyy'));And here is how I would like to use my function:
SELECT orders.ord_no
, orders.plan_start_dt
, add_mdays(orders.plan_start_dt, -3) AS prep_date
FROM ordersThus, the function would allow me to return, for every order in my orders table, the date that is 3 workdays (mdays) prior to the plan start date of each order.
Am I going about this the right way? Do I need to create a function to do this, or is there a way for me to incorporate my query (that does my mday calculation) into the sample query above (eliminating the need to create a function)?
Thanks much in advance!
Edited by: user11033437 on Feb 2, 2010 8:55 AM
Fixed a couple typos in the last insert statements
Edited by: user11033437 on Feb 2, 2010 9:31 AM (fixed some syntax in the function)Hi,
Ah, mentioning Oracle 8 and not being able to test your own code makes me nostalgic for the good old days, when you typed your cards, and brought them to a window at the computer center, and waited an hour for the job to run, and then saw the printout to find that you had made a typo.
If you're going to write functions, you really need to test them yourself. Like all code, functions whould be written in baby steps: write a line or two (or sometimes just part of what will later become one line), test, make sure it's running correctly, and repeat.
Ideally, your employer should create a developement schema in a development database for you to use.
You can legally download your own instance of Oracle Express Edition for free; just be careful not to use features that aren't available in the database where the code will be deployed.
You don't need a function to get the results you want:
SELECT o.ord_no
, o.plan_start_dt
, MIN (e.clndr_dt) AS prep_date
FROM orders o
, caln l
, caln e
WHERE l.clndr_dt = o.plan_start_dt
AND e.shop_days = l.shop_days - 3
GROUP BY o.ord_no
, o.plan_start_dt
;This would be more efficient (and a little simpler) if you added a column (let's call it work_day) that identified if each row represented a work_day or not.
For each value of shop_days, exactly 1 row will be marked as a work day.
Then the query might be something like:
SELECT o.ord_no
, o.plan_start_dt
, e.clndr_dt AS prep_date
FROM orders o
, caln l
, caln e
WHERE l.clndr_dt = o.plan_start_dt
AND e.shop_days = l.shop_days - 3
AND e.work_day = 1
;You could use the analytic LAG function to populate the work_day column.
A function would certainly be handy, though perhaps slower.
The function you posted has a few mistakes:
(a) An argument can't be declared as NUMBER (5); just NUMBER.
(b) When you SELECT in PL/SQL, like you're doing, you have to SELECT INTO some variable to hold the results.
(c) ROWNUM is arbitrary (which makes it useless in this problem) unless you are drawing from an ordered sub-query. I don't think you can use ORDER BY in sub-queries in Oracle 8. Use the analytic ROW_NUMBER function instead.
(d) The function must end with an END statement.
Given your current caln table, here's how I would write the function:
CREATE OR REPLACE FUNCTION add_mdays
( start_date IN DATE DEFAULT SYSDATE,
mdays IN NUMBER DEFAULT 1
RETURN DATE
DETERMINISTIC
IS
-- add_mdays returns the DATE that is mdays working days
-- after start_date. (If mdays < 0, the DATE returned
-- will be before start_date).
-- Work days do not include Saturdays, Sundays or holidays
-- as indicated in the caln table.
new_date DATE; -- to be returned
BEGIN
SELECT MIN (t.clndr_dt)
INTO new_date
FROM caln f -- f stands for "from"
, caln t -- t stands for "to"
WHERE f.clndr_dt = TRUNC (start_date)
AND t.shop_days = f.shop_days + TRUNC (mdays)
RETURN new_date;
END add_mdays;
SHOW ERRORSProduction code whould be robust (that includes "idiot-proofing").
Try to foresee what errors people might make in calling your function, and correct for them when possible.
For example, if it only makes sense for start_date to be midnight, or mdays to be an integer, then use TRUNC in the function in case soembody passes a bad value.
Allow for default arguments.
Comment your function. Put all comments within the function (that is, after CREATE and before the final END) so that they will be kept in the data dictionary.
If, given the same arguments, the function always returns the same value, mark it as DETERMINISTIC, for efficiency. This means the system may remember values passed back rather than call the function every time it is told to.
I wish I could mark questions as "Correct" or "Helpful"; you'd get 10 points for sure.
You posted CREATE TABLE and INSERT statements (without even being begged).
You gave a clear description of the problem, including desired results.
The code is nicely formatted and easy to read.
All around, one of the most thoughtful, well-written questions I've seen.
Well done! Keep up the good work!
Edited by: Frank Kulash on Feb 2, 2010 1:10 PM
Added my own version of the function. -
First off let me put out the disclaimer that I am not the bit knowledgeable in PL/SQL. I am using this from an example posted in the APEX forum.
I need the function to return values based on user role. I know, this is probably the ugliest pl/sql you may have seen yet ;) I hope you guys can decipher the logic I am using. Obviously this code does not validate.
Could you guys help me with this?
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RETURN art_table_type
AS
v_data art_table_type := art_table_type ();
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RETURN art_table_type
AS
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l_cnt integer;
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SELECT 1
INTO l_cnt
FROM dual
WHERE EXISTS(
SELECT 1
FROM gbl_people p,
gbl_access a
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AND p.person_id = a.person_id
AND a.art_role = 9
IF( l_cnt = 1 )
THEN
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BULK COLLECT INTO v_data
FROM gbl_people;
ELSE
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BULK COLLECT INTO v_data
FROM (SELECT person_id, reverse_name
FROM gbl_people
WHERE upper(userid) = upper(app_user)
AND current_flag is not null
UNION
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FROM gbl_people
WHERE mgr_person_id = (SELECT person_id
FROM gbl_people
WHERE upper(userid) = upper( app_user )
AND current_flag is not null)
AND current_flag is not null);
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END;If that doesn't work (I don't have you table definitions, so I can't try to compile it myself), please post all the compilation errors (including line numbers).
Justin -
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mfg
Skarinija -
hello
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13
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1
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2 FUNCTION S_LEVEL RETURN NUMBER
3 AS
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8 INTO v_cnt
9 FROM dual
10 CONNECT BY rownum < 2;
11
12 RETURN v_cnt;
13
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context = la_context
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bapiadtlx = it_adtlx
bapiadsmtp = it_adsmtp
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Let me know if you have questions . -
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and then proceed to the frame in which the desired page (eg news
section) is located. What i want to happen though is for the movie
clip to play from start to finish(goes for about 30 frames) and
then i want it to display the frame. At the moment the new frame
appears while the movie is still playing.One easy way.....You just need a keyframe at the end of your
movie,ie after
the 30 frames, and that keyframe will have your content (or
content
movieclip) in it. Make sure that the keyframe at the
beginning of the
movieclip doesn't have your content in it.
Adam :) -
RT executable causes functional global variable VIs to become non-reentrant
Hi,
I am having a small issue with functional global variables (Repositories). The attached VI is a sample functional global variable I created that stores double precision numeric values. The VI properties are set to normal execution. I use this VI to pass data between loops running in real time on a PXI platform. When running my application from the project explorer (not creating executable) the VI functions as it should and passes data between my loops with no issues. But when I create a real time executable of my application and run it on the PXI, it does not share data between instances of the VI. My work around this issue is to change the VI properties execution priority to Subroutine but it forces me to modify my VI slightly for this to work (I have to remove the property node). I am not sure why this is happing. I have seen some applications with this VI that appear to function normally in development and in executable with the VI properties execution priority set to Normal. Any comments or suggestions are welcomed.
I am running LabVIEW 2009, PXI-8186, and Windows XP
Thanks
Attachments:
RT Repository DBL Numeric Command Ver 2.ctl 5 KB
RT Repository DBL Numeric Element Ver 2.ctl 5 KB
RT Repository DBL Numeric Ver 2.vi 25 KBMany properties require the front panel to be loaded in memory; the property you're using, NumItems, appears to be one of them (look at the help, you'll see that it says "Loads the front panel into memory.") However, VIs running in an executable on RT do not have front panels, so those property nodes will not work. If you were to log the error out terminal from the property node in your executable, you should see that an error occurs. As a result, you're getting a 0 value out of the property node, causing your VI to output unexpected results.
My recommendation is that you replace the property node with the function GetNumericInfo found in vi.lib\utility\VariantDataType. It has an output called EnumNames. Take the size of the EnumNames array and use that in place of the output from the property node. This will work on RT.
Note that this has nothing to do with re-entrancy, and the key hint is that the VI works when you remove the property node. -
[8i] Need help with some workday calculations
At the beginning of the month, I got help with a workday calculation in: [8i] Help with function with parameters (for workday calculation)
Now, as it turns out, I was able to locate a function in the database that does what I want, however, it is much slower to use the function than to join two copies of the CALN table (Please see referenced thread for details. I can copy them to this thread if necessary.) I need to verify that the pre-existing function has 'DETERMINISTIC' in it, as I would guess that if it doesn't, it would be much slower than it could be.
But now, I've come across a situation where I have to do multiple workday calculations in the same query--enough that I have to join 6 copies of my CALN table. I can't imagine that is at all efficient. I believe it was Frank K. who said (in the original thread) that if the function was slow, I should consider alternatives. Can anyone help me identify some of those alternatives? I'm definitely at that point now. (This query is one I'm using as the base for a report in Oracle BI, and let's just say it doesn't like my query, even though my syntax appears to be correct, and I would guess that joining 6 copies of one table is at least partly to blame for this).
Note: I'm working with Oracle 8iOK, I finally have some sample data... I tried to make it thorough. I've included data in the CALN table YTD + tomorrow, so that any workday calculations using SYSDATE will work.
CREATE TABLE caln
( clndr_dt DATE NOT NULL
, clndr_yr NUMBER
, shop_day NUMBER
, shop_dt DATE
, shop_wk NUMBER
, shop_yr NUMBER
, shop_days NUMBER
, clndr_days NUMBER
CONSTRAINT caln_pk PRIMARY KEY (clndr_dt)
INSERT INTO caln
VALUES (To_Date('12/23/2009','mm/dd/yyyy'),2009,247,To_Date('12/23/2009','mm/dd/yyyy'),51,2009,7631,10950);
INSERT INTO caln
VALUES (To_Date('01/01/2010','mm/dd/yyyy'),2010,0,To_Date('12/23/2009','mm/dd/yyyy'),52,2009,7631,10959);
INSERT INTO caln
VALUES (To_Date('01/02/2010','mm/dd/yyyy'),2010,0,To_Date('12/23/2009','mm/dd/yyyy'),52,2009,7631,10960);
INSERT INTO caln
VALUES (To_Date('01/03/2010','mm/dd/yyyy'),2010,0,To_Date('12/23/2009','mm/dd/yyyy'),1,2010,7631,10961);
INSERT INTO caln
VALUES (To_Date('01/04/2010','mm/dd/yyyy'),2010,1,To_Date('01/04/2010','mm/dd/yyyy'),1,2010,7632,10962);
INSERT INTO caln
VALUES (To_Date('01/05/2010','mm/dd/yyyy'),2010,2,To_Date('01/05/2010','mm/dd/yyyy'),1,2010,7633,10963);
INSERT INTO caln
VALUES (To_Date('01/06/2010','mm/dd/yyyy'),2010,3,To_Date('01/06/2010','mm/dd/yyyy'),1,2010,7634,10964);
INSERT INTO caln
VALUES (To_Date('01/07/2010','mm/dd/yyyy'),2010,4,To_Date('01/07/2010','mm/dd/yyyy'),1,2010,7635,10965);
INSERT INTO caln
VALUES (To_Date('01/08/2010','mm/dd/yyyy'),2010,5,To_Date('01/08/2010','mm/dd/yyyy'),1,2010,7636,10966);
INSERT INTO caln
VALUES (To_Date('01/09/2010','mm/dd/yyyy'),2010,0,To_Date('01/08/2010','mm/dd/yyyy'),1,2010,7636,10967);
INSERT INTO caln
VALUES (To_Date('01/10/2010','mm/dd/yyyy'),2010,0,To_Date('01/08/2010','mm/dd/yyyy'),2,2010,7636,10968);
INSERT INTO caln
VALUES (To_Date('01/11/2010','mm/dd/yyyy'),2010,6,To_Date('01/11/2010','mm/dd/yyyy'),2,2010,7637,10969);
INSERT INTO caln
VALUES (To_Date('01/12/2010','mm/dd/yyyy'),2010,7,To_Date('01/12/2010','mm/dd/yyyy'),2,2010,7638,10970);
INSERT INTO caln
VALUES (To_Date('01/13/2010','mm/dd/yyyy'),2010,8,To_Date('01/13/2010','mm/dd/yyyy'),2,2010,7639,10971);
INSERT INTO caln
VALUES (To_Date('01/14/2010','mm/dd/yyyy'),2010,9,To_Date('01/14/2010','mm/dd/yyyy'),2,2010,7640,10972);
INSERT INTO caln
VALUES (To_Date('01/15/2010','mm/dd/yyyy'),2010,10,To_Date('01/15/2010','mm/dd/yyyy'),2,2010,7641,10973);
INSERT INTO caln
VALUES (To_Date('01/16/2010','mm/dd/yyyy'),2010,0,To_Date('01/15/2010','mm/dd/yyyy'),2,2010,7641,10974);
INSERT INTO caln
VALUES (To_Date('01/17/2010','mm/dd/yyyy'),2010,0,To_Date('01/15/2010','mm/dd/yyyy'),3,2010,7641,10975);
INSERT INTO caln
VALUES (To_Date('01/18/2010','mm/dd/yyyy'),2010,11,To_Date('01/18/2010','mm/dd/yyyy'),3,2010,7642,10976);
INSERT INTO caln
VALUES (To_Date('01/19/2010','mm/dd/yyyy'),2010,12,To_Date('01/19/2010','mm/dd/yyyy'),3,2010,7643,10977);
INSERT INTO caln
VALUES (To_Date('01/20/2010','mm/dd/yyyy'),2010,13,To_Date('01/20/2010','mm/dd/yyyy'),3,2010,7644,10978);
INSERT INTO caln
VALUES (To_Date('01/21/2010','mm/dd/yyyy'),2010,14,To_Date('01/21/2010','mm/dd/yyyy'),3,2010,7645,10979);
INSERT INTO caln
VALUES (To_Date('01/22/2010','mm/dd/yyyy'),2010,15,To_Date('01/22/2010','mm/dd/yyyy'),3,2010,7646,10980);
INSERT INTO caln
VALUES (To_Date('01/23/2010','mm/dd/yyyy'),2010,0,To_Date('01/22/2010','mm/dd/yyyy'),3,2010,7646,10981);
INSERT INTO caln
VALUES (To_Date('01/24/2010','mm/dd/yyyy'),2010,0,To_Date('01/22/2010','mm/dd/yyyy'),4,2010,7646,10982);
INSERT INTO caln
VALUES (To_Date('01/25/2010','mm/dd/yyyy'),2010,16,To_Date('01/25/2010','mm/dd/yyyy'),4,2010,7647,10983);
INSERT INTO caln
VALUES (To_Date('01/26/2010','mm/dd/yyyy'),2010,17,To_Date('01/26/2010','mm/dd/yyyy'),4,2010,7648,10984);
INSERT INTO caln
VALUES (To_Date('01/27/2010','mm/dd/yyyy'),2010,18,To_Date('01/27/2010','mm/dd/yyyy'),4,2010,7649,10985);
INSERT INTO caln
VALUES (To_Date('01/28/2010','mm/dd/yyyy'),2010,19,To_Date('01/28/2010','mm/dd/yyyy'),4,2010,7650,10986);
INSERT INTO caln
VALUES (To_Date('01/29/2010','mm/dd/yyyy'),2010,20,To_Date('01/29/2010','mm/dd/yyyy'),4,2010,7651,10987);
INSERT INTO caln
VALUES (To_Date('01/30/2010','mm/dd/yyyy'),2010,0,To_Date('01/29/2010','mm/dd/yyyy'),4,2010,7651,10988);
INSERT INTO caln
VALUES (To_Date('01/31/2010','mm/dd/yyyy'),2010,0,To_Date('01/29/2010','mm/dd/yyyy'),5,2010,7651,10989);
INSERT INTO caln
VALUES (To_Date('02/01/2010','mm/dd/yyyy'),2010,21,To_Date('02/01/2010','mm/dd/yyyy'),5,2010,7652,10990);
INSERT INTO caln
VALUES (To_Date('02/02/2010','mm/dd/yyyy'),2010,22,To_Date('02/02/2010','mm/dd/yyyy'),5,2010,7653,10991);
INSERT INTO caln
VALUES (To_Date('02/03/2010','mm/dd/yyyy'),2010,23,To_Date('02/03/2010','mm/dd/yyyy'),5,2010,7654,10992);
INSERT INTO caln
VALUES (To_Date('02/04/2010','mm/dd/yyyy'),2010,24,To_Date('02/04/2010','mm/dd/yyyy'),5,2010,7655,10993);
INSERT INTO caln
VALUES (To_Date('02/05/2010','mm/dd/yyyy'),2010,25,To_Date('02/05/2010','mm/dd/yyyy'),5,2010,7656,10994);
INSERT INTO caln
VALUES (To_Date('02/06/2010','mm/dd/yyyy'),2010,0,To_Date('02/05/2010','mm/dd/yyyy'),5,2010,7656,10995);
INSERT INTO caln
VALUES (To_Date('02/07/2010','mm/dd/yyyy'),2010,0,To_Date('02/05/2010','mm/dd/yyyy'),6,2010,7656,10996);
INSERT INTO caln
VALUES (To_Date('02/08/2010','mm/dd/yyyy'),2010,26,To_Date('02/08/2010','mm/dd/yyyy'),6,2010,7657,10997);
INSERT INTO caln
VALUES (To_Date('02/09/2010','mm/dd/yyyy'),2010,27,To_Date('02/09/2010','mm/dd/yyyy'),6,2010,7658,10998);
INSERT INTO caln
VALUES (To_Date('02/10/2010','mm/dd/yyyy'),2010,28,To_Date('02/10/2010','mm/dd/yyyy'),6,2010,7659,10999);
INSERT INTO caln
VALUES (To_Date('02/11/2010','mm/dd/yyyy'),2010,29,To_Date('02/11/2010','mm/dd/yyyy'),6,2010,7660,11000);
INSERT INTO caln
VALUES (To_Date('02/12/2010','mm/dd/yyyy'),2010,30,To_Date('02/12/2010','mm/dd/yyyy'),6,2010,7661,11001);
INSERT INTO caln
VALUES (To_Date('02/13/2010','mm/dd/yyyy'),2010,0,To_Date('02/12/2010','mm/dd/yyyy'),6,2010,7661,11002);
INSERT INTO caln
VALUES (To_Date('02/14/2010','mm/dd/yyyy'),2010,0,To_Date('02/12/2010','mm/dd/yyyy'),7,2010,7661,11003);
INSERT INTO caln
VALUES (To_Date('02/15/2010','mm/dd/yyyy'),2010,31,To_Date('02/15/2010','mm/dd/yyyy'),7,2010,7662,11004);
INSERT INTO caln
VALUES (To_Date('02/16/2010','mm/dd/yyyy'),2010,32,To_Date('02/16/2010','mm/dd/yyyy'),7,2010,7663,11005);
INSERT INTO caln
VALUES (To_Date('02/17/2010','mm/dd/yyyy'),2010,33,To_Date('02/17/2010','mm/dd/yyyy'),7,2010,7664,11006);
INSERT INTO caln
VALUES (To_Date('02/18/2010','mm/dd/yyyy'),2010,34,To_Date('02/18/2010','mm/dd/yyyy'),7,2010,7665,11007);
INSERT INTO caln
VALUES (To_Date('02/19/2010','mm/dd/yyyy'),2010,35,To_Date('02/19/2010','mm/dd/yyyy'),7,2010,7666,11008);
INSERT INTO caln
VALUES (To_Date('02/20/2010','mm/dd/yyyy'),2010,0,To_Date('02/19/2010','mm/dd/yyyy'),7,2010,7666,11009);
CREATE TABLE ords
( ord_nbr NUMBER NOT NULL
, sub_nbr NUMBER NOT NULL
, ord_stat VARCHAR2(2)
, ord_qty NUMBER
, part_nbr VARCHAR2(5)
CONSTRAINT ords_pk PRIMARY KEY (ord_nbr, sub_nbr)
INSERT INTO ords
VALUES (1,1,'CL',10,'PART1');
INSERT INTO ords
VALUES (1,2,'CL',5,'PART1');
INSERT INTO ords
VALUES (25,1,'CL',15,'PART2');
INSERT INTO ords
VALUES (14,1,'OP',12,'PART3');
INSERT INTO ords
VALUES (33,1,'CL',25,'PART1');
INSERT INTO ords
VALUES (33,2,'CL',15,'PART1');
INSERT INTO ords
VALUES (33,3,'OP',10,'PART1');
INSERT INTO ords
VALUES (7,1,'PL',18,'PART2');
INSERT INTO ords
VALUES (96,1,'PL',10,'PART3');
INSERT INTO ords
VALUES (31,1,'CL',20,'PART2');
CREATE TABLE oops
( ord_nbr NUMBER NOT NULL
, sub_nbr NUMBER NOT NULL
, op_nbr VARCHAR2(4) NOT NULL
, mach_id VARCHAR2(4)
, oper_stat VARCHAR2(2)
, plan_start_dt DATE
, plsu NUMBER
, plrn NUMBER
CONSTRAINT ords_pk PRIMARY KEY (ord_nbr, sub_nbr, op_nbr)
-- NOTE:
-- for the orders with a status of 'CL' or 'PL' in the 'ords' table, I'm not bothering to put
-- in more than two operations (though in reality more would be there) since they should be
-- ignored in the final result anyway
INSERT INTO oops
VALUES (1,1,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (1,1,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (1,2,'0010','123A','CP',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (1,2,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (25,1,'0005','123A','CP',TO_DATE('01/18/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (25,1,'0030','110C','CL',TO_DATE('01/19/2010','mm/dd/yyyy'),4,0.1);
INSERT INTO oops
VALUES (14,1,'0010','127A','CP',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (14,1,'0025','110C','CL',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (14,1,'0040','050C','CP',TO_DATE('01/13/2010','mm/dd/yyyy'),1.3,0.15);
INSERT INTO oops
VALUES (14,1,'0050','220B','WK',TO_DATE('01/14/2010','mm/dd/yyyy'),4,0.25);
INSERT INTO oops
VALUES (14,1,'0065','242B','AV',TO_DATE('01/18/2010','mm/dd/yyyy'),1.5,0.1);
INSERT INTO oops
VALUES (14,1,'0067','150G','NA',TO_DATE('01/19/2010','mm/dd/yyyy'),2,0.1);
INSERT INTO oops
VALUES (14,1,'0100','250G','NA',TO_DATE('01/20/2010','mm/dd/yyyy'),2.1,0.2);
INSERT INTO oops
VALUES (33,1,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,1,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,2,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,2,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,3,'0010','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (33,3,'0015','259B','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (33,3,'0020','220B','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1.7,0.15);
INSERT INTO oops
VALUES (33,3,'0030','150G','NA',TO_DATE('01/13/2010','mm/dd/yyyy'),1.3,0.05);
INSERT INTO oops
VALUES (33,3,'0055','150G','NA',TO_DATE('01/15/2010','mm/dd/yyyy'),2.1.,0.1);
INSERT INTO oops
VALUES (7,1,'0005','123A','NA',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.2);
INSERT INTO oops
VALUES (7,1,'0030','110C','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.15);
INSERT INTO oops
VALUES (96,1,'0010','127A','NA',TO_DATE('01/11/2010','mm/dd/yyyy'),2,0.25);
INSERT INTO oops
VALUES (96,1,'0025','110C','NA',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
INSERT INTO oops
VALUES (31,1,'0005','123A','CL',TO_DATE('01/11/2010','mm/dd/yyyy'),1.9,0.2);
INSERT INTO oops
VALUES (31,1,'0030','110C','CP',TO_DATE('01/12/2010','mm/dd/yyyy'),1,0.1);
CREATE TABLE mach
( mach_id VARCHAR2(4) NOT NULL
, desc_short VARCHAR2(9)
, group VARCHAR2(7)
CONSTRAINT ords_pk PRIMARY KEY (mach_id)
INSERT INTO mach
VALUES ('123A','desc here','GROUPH1');
INSERT INTO mach
VALUES ('259B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('110C','desc here','GROUPJ1');
INSERT INTO mach
VALUES ('050C','desc here','GROUPK2');
INSERT INTO mach
VALUES ('220B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('242B','desc here','GROUPH2');
INSERT INTO mach
VALUES ('150G','desc here','GROUPL1');
INSERT INTO mach
VALUES ('250G','desc here','GROUPL2');
INSERT INTO mach
VALUES ('242B','desc here','GROUPH2'); -
How to use functional global with a large amount of variables?
Hi all,
I'm currently developping a LV program which control and acquired data from a device. Up to now I used global variables ( very conveniente to use for experimental parameters). But now my program is become to be too large and I have too much "global" variables to continue to use a global.vi.
I'm wondering if functional global can help me. If someone has an exemple of how use functional global with a large amount of variables...
thanksI agree with Ben.
Using queues is better than a number of Globals or Action Engines (Functional Globals). If you need to pass data to a sub-vi, you can simply wire the queue out to a queue control of a sub-vi, or a reference. See attached example of passing data to a sub-vi using a queue. The example is an extremely simple, undocumented tid-bit of code that sends the loop count to the consumer VI.
Run the main program called QueueProducer.vi.
R
Attachments:
QueueProducer.vi 18 KB
QueueConsumer.vi 14 KB -
I've written a plugin layer for a LV executable. When this layer makes a call to the plugins' initialization functions, I want each plugin library to be able to initialize and maintain its own global memory (where things like VISA resource names or ActiveX objects are stored). However, I've found that I can't manage to keep my global VIs "alive." I'm inclined to switch to functional globals, but I suspect that this will be a problem for things like ActiveX objects (that in this particular case reference a CAN interface). I believe that the functional global will indeed store the object from run to run, it's just that I'm somehow disinclined to think that the object will remain valid. I think you'll have to re-initialize it. Can anyone speak for or against this hunch? (If you can't tell, I'm trying to avoid building a whole little test executable just to debug this problem.)
I suppose the more profound question is "Why don't the globals stay in memory?" I'm attaching an image of what the application layer that calls the plugins' intializations looks like. Next I'm attaching an example of an actual initialization routine. You'll notice that I've even gone so far as to explicitly open the ref to the global VI that I want to keep in memory. Then I just leave it there dangling - but it still gets dropped! In my mind I shouldn't even have to do this, since the dynamically-called subVI "MC_CMO Init.vi" actually initializes the globals and runs with AutoDisposeRef = False.
Lastly, this is my first-ever attempt at writting plugin software. So if you look at my code and have any criticisms/pointers, I'll greatly appreciate them.
Thanks in advance,
Nick
"You keep using that word. I do not think it means what you think it means." - Inigo Montoya
Attachments:
AppLayer.JPG 60 KB
InitPlugin.JPG 103 KBI am not sure if I follow you completely on your work-around.
Everything I have to say on this topic is based on obesrvations and threads I have read on Info-LabVIEW. Therefore it is subject to corecttion by those who know better.
LV is smart enough to know when "something" that had been opened, can be closed. It is not perfect.
If for instance you open a VISA refnum and pass the refnum to a LV2 AS A REFNUM the refnum in the LV2 stay alive as long as the VI's are running.
If you start another VI that uses the LV2 to fetch the refnum, it should get a valid ref as long as it starts before the first goes idle.
You then be able to work with refnum usign the VI launched second as long as stays active.
I often create action engine that can be invoked where required throughout an application. If the action engines get a ref in one state (like init) and use it another, I will generally write a "tester" that calls the action engine action to test the engine. In this case, my "tester" stays live and it keeps the ref's fresh.
I suspect if you tried to trick LV you could. If you type cast the ref nums to I32 and stored those in a LV2, I could see how LV could loose track of the resource sharing, but that is something I would avoid.
So I encourage you to do some experimenting with keeping track of who's running when to see if your work-around will work.
If you think you understand it better than I explained it, please post.
Trying to help,
Ben
Ben Rayner
I am currently active on.. MainStream Preppers
Rayner's Ridge is under construction
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