Passing local variable to subsequence
I have a sequence that sets a local variable, Locals.LowPassFreqGhz = 1.800.
Then it runs 5 subsequences.
The Local is set to a new value and then the same 5 subsequences are run again.
Now I have new model numbers where the pair is different and soon will have models where there will be groups of 4 frequencies instead of two. Therefore I would like to put the 5 seqs into a subseq and pass the freq based on a select statement. In my limited understanding and knowledge of TestStand I think the subsequence would have its own Local.variables. How should I pass this local to a subsequence, convert to a File.global?
thanx,
jvh
Solved!
Go to Solution.
there is another way also to
Teststand give us an option of "Propagation" of a variable to subseqeunce.
we need to create a local variable both in main and sub sequence with same name and use "Propogate to subsequence" in main seqeunce and " allowpropagation from caller" in sub seqeunce.
This option of propagation one can see by right click of a variable in variables pane. This allows us to get the values of variables in main seqeuence to sub seqeunce.
But need to remember that both variable names in main and sub sequence should be the same.
Regards,
Praveen.
Similar Messages
-
How to pass local variables between different sequence files?
Actually i want to pass the data (local variable) from my process model file to a client file. The client file only has the callbacks and those callbacks require some parameters as input which is available in local variables of my process model sequence file. I do not want to use Station Globals.
Please tell me any other way by which i can pass that data.Which Locals do you want from the model. Every sequence has it's own Locals and there are a bunch of sequences in every process model. Do you want the entry point's Locals? A callback's Locals? Just one of the sequence's Locals? Some Models have way more entry points than others. What if your sequence file is ran with a different entry point?
One option is to create your own callback in the model and pass the data to it as parameters. Then add that callback to your client sequence file and get it out of the parameters.
If you simply want the entry point's locals and you are in your Main Sequence then you could use RunState.Caller.Locals.VariableName. This assumes you will use the same entry point every time you run that sequence file. Or assumes that every entry point you run has the same Local variable name.
Maybe there is an API method that exposes what you are looking for. What is your goal?
Regards,
jigg
CTA, CLA
teststandhelp.com
~Will work for kudos and/or BBQ~ -
How to use local variables to pass an image mask correctly
I'm kind of new to labview but i'll try to explain the problem as best as i can: I'm trying to pass an image mask (basically an image) to the next iteration of a while loop using local variables. I think the image passes through the loop with the local variable but i can't read from it correctly for some reason. And I don't think the problem has to do with local variables because i've tried using shift registers and that didnt work either. I think the problem is that you need to do something to read the image correctly again, like using IMAQ copy or something (that didnt work tho), but i can't figure out what the problem is. Does anyone know what the problem is? I know this isnt a great explanation and if its too confusing i could send some snapshots of the program or something. Any help would be greatly appreciated though.
Thanks,
WillSo i attached 2 snapshots of the program to give a better idea of the problem. The first snapshot shows an image getting written to the local variable SavedMask. The second snapshot, which is run on the next iteration of a while loop, shows the local variable SavedMask being read to other image operations. When i run the program, the SavedMask image is always displayed correctly on the front panel, but i can't read from it for whatever reason. I think the problem could be like you said, that im only passing an imaq reference, and i think theres a certain way to extract the image data. Do you know the correct way to extract the image data or how to pass the image data and not just a reference to the data.
Attachments:
first.jpg 81 KB
second.jpg 68 KB -
How do I pass a local variable as a parameter to a JSP Tag File?
I wrote a custom JSP tag file, and I want to pass a local variable to it through a parameter, like this:
<% Integer someValue = new Integer(-5); %>
<my:TestTag value="someValue"/>
This doesn't work though - the result is the string someValue. Trying to do this doesn't work either:
<% Integer someValue = new Integer(-5); %>
<my:TestTag value="someValue"/>
the value attribute ends up being null.
I know I can work arount by putting the local variable in the request attributes then using ${}, but that seems like a lot of unecessary work. Does anyone know I can just pass a local variable to the custom tag through the custom tags parameter list?I'm far from beeing an expert, but this may be a clue (?)
Basically, the rule is: everything you want to be considerred as Java must be in a
JSP tag.
As an example, think of how you would do to pass the litteral string "someValue" otherwise. Then you may imagine other related issues... -
Can you have a local variable to handle wfm information?
I am very new to test stand. Can you have a local variable to handle wfm information?
Also how do you use parameters? Do you need to have a parameter of the same name in the main sequence and subsequence?
Thanks,
Brian
Electrical Engineer
L3 CommunicationHi Brian
Parameters are one way you can pass data from a calling sequence to a subsequence. From the main sequence, right-click on your subsequence and select "Specify Module...". In the "Parameters" section of the dialog box, you should see any parameters that you have for your subsequence. You can then assign these subsequence parameters to have the same value as a parameter from the calling sequence, a local variable from the calling sequence, a constant, etc. In regards to your question about naming parameters, you do not need to have parameters of the same name in both the calling sequence and the subsequence, although you could have them be the same name.
Russell G.
NI Applications Engineering -
I am currently using Station Globals for sharing values among the main sequence and subsequence files. But I constantly need to add the variables on the many computers we own.
I tried using the File Globals in the main sequence file, but the variables are not displayed in or passed to the subsequence file. It works just like a local variable.
I also tried selecting the option "propagnate to subsequence" for the local variable in the main sequence, but still didn't get passed to the subsequence.
Thanks!
ph2ph2 wrote:
I am currently using Station Globals for sharing values among the main sequence and subsequence files. But I constantly need to add the variables on the many computers we own.
I tried using the File Globals in the main sequence file, but the variables are not displayed in or passed to the subsequence file. It works just like a local variable.
I also tried selecting the option "propagnate to subsequence" for the local variable in the main sequence, but still didn't get passed to the subsequence.
Thanks!
ph2
I'd recommend you consider using sequence parameters rather than globals. If you use globals, and you someday want to switch to a multi-socket test system, you might have to make signficant changes to your code because you likely would not want all of the threads using the same globals. If you use parameters instead, then every thread already would automatically have its own copy of the variables. Also parameters do not have the problem you are asking about here.
-Doug -
How to use local variable in member formula?
Hi Expert,
We would like to use a {local variable} in a member formula, so that it can pick up the prompt from webform upon save. Would like to know if it is possible to do? If so, what is the correct syntax?
We attempted to use brace {scenario}, blacket [scenario], blacket with quote ["scenario"]. None of these work.
We are using 11.1.2.1 version, EPMA, Hyperion Planning.
Thanks in advance for your help!One other pointer. Where did you define your variable? Hopefully you went into Calc Manager and selected <Tools>, <Variables>. From there, navigate to your application or database. Right-click on your application or database and select "New". In the bottom panel, you'll need to select your Variable Type. Make sure you select "Member", and not "Members". You cannot pass "Members" (plural) to a web input form. Also, if you want to define a variable for a custom dimension, you'll need to do it at the database level. Standard dimension member variables can be defined at the app level. (Not sure why this is the case, especially when my custom dimension exists in all plan types . . . . )
Anyway, hope this helps,
- Jake -
Problem using local variable in event loop
I have a state machine from which I want to monitor various controls, including "Start" and "Stop" buttons. Not every state needs to monitor the controls. At present, most states run timed loops. In the first state that reads the front panel, I have an Event structure (inside a While loop) that monitors the various controls' Change Value events. For numeric controls, I update variables (in shift registers) as needed. The "Start" button is used to end the While loop controlling the Event structure, allowing the State to exit to the next state.
My problem comes in subsequent states that employ this same idea. Here, I put a Local Variable bound to the Start button and use the same code, but it frequently happens that when I enter this particular state, I cannot "turn on" the control -- I push the button, but it stays off. Curiously, if it was On when I enter, I can turn it off, but then I'm stuck not being able to turn it on.
I mocked up a very simply routine that illustrates this. There are two sequences (corresponding to the two states). Both use an Event loop with a local variable bound to my Stop button (really this is an LED control with custom colors). I've deliberately moved the "initialization" (the declaration of the control in the block diagram) out of the Event loops -- putting it inside the first loop modifies the behavior in another strange way.
Here's my thinking on how I would expect this to work: The code outside Event Loop 1 should have little effect. Assume the Stop button is initially Off. You will "sit" in Event Loop 1 until you push the Stop button, changing its value to True; this value will be passed out of the Event case and cause the first While loop to exit. You now enter the second sequence. As I understand the Exit tunnel, it defaults to "False", so I'd expect to stay in the second Event loop until I turn the Stop button from On to Off, which will pass out a False, and keep me in the While for one more button push. However, this doesn't happen -- I immediately exit, as though the "True" value of the Stop local variable is being seen and recognized by the Event loop (even though it hasn't changed, at least not in the context of this second loop).
An even more curious thing occurs if I start this routine with the Stop button turned on. Now I start in my Event loop waiting for a change, but this time the change will be from On to Off, which won't cause an exit from the frame. This will be reflected by having the While loop count increment. We should now be in the state of the example above, i.e. in an Event loop waiting for the control to be pushed again, and turned On. However, clicking the control has no effect -- I cannot get it to "turn on".
Where am I going astray in my thinking? What is it about this method of doing things that violates the Labview paradigm? As far as I can tell, what I'm doing is "legal", and I don't see the flaw in my reasoning, above (of course not -- otherwise I'd have fixed it myself!). Note that because I'm using local variables inside Event loops (and I'm doing this because there are two places in my code where I want to do such testing), the Stop control is not latching (as required). Is there something that gets triggered/set when one reads a latched control? Do I need to do this "manually" using my local variable?
I'll try to attach the simple VI that illustrates this behavior.
Bob Schor
Attachments:
Simple Stop Conundrum.vi 14 KBaltenbach wrote:
Ravens Fan wrote:
NEVER have multiple event structures that share the same events.
Actually, that's OK. NOT OK is having multiple event structures in the same sequence structure.
See also: http://forums.ni.com/ni/board/message?board.id=170&message.id=278981#M278981
That's interesting. I had always thought I read more messages discouraging such a thing rather than saying it was okay. Your link lead me to another thread with this message. http://forums.ni.com/ni/board/message?board.id=170&message.id=245793#M245793. Now that thread was mainly concentrating on registered user events which would be a different, but related animal.
So if you have 2 event structures they each have their own event queue? So if you have a common event, one structure pulls it off its event queue and it does not affect the other structure's event queue? I guess the inherent problem with this particular VI was that the second event structure locked the front panel. Since the code never got to that 2nd event structure because the first loop never stopped because the change was from true to false. After reading your post and the others, I did some experimentation and turned off the Lock front panel on the 2nd structure, and that prevented the lockup of the program.
Overall, the example VI still shows problems with the architecture and I think your answer should put the original poster on the right track. I think as a rule I would probably never put the same event in multiple structures, I feel there are better ways to communicate the same event between different parts of a program, but I learned something by reading your reply and about how the event structures work in the background. Thanks. -
Error in assigning value to local variable
i am writing a stored procedure in which i have pass parameter if parameter value is zero then i assign a previously declared variable null else that value
syntax is this
create or replace
PROCEDURE usp_Add_Update_Insurance
p_CityID IN NUMBER DEFAULT NULL
as
v_CityID number(10,0);
begin
IF p_CityID = 0 THEN
BEGIN
v_CityID := NULL;-----giving error in this line
else
v_CityID:=p_CityID;
END;
END IF;
end
begin
///some query
end
please help someoneI think there is no added value by putting those Begin/End.
The simplest solution is just remove them
Create Or Replace
Procedure Usp_Add_Update_Insurance (
P_Cityid In Number Default Null
) As
V_Cityid Number(10,0);
Begin
If P_Cityid = 0 Then
V_Cityid := Null;
Else
V_Cityid:=P_Cityid;
End If;
-- do something with V_Cityid
End; The only reason for having Begin/End is if you want to catch some exceptions or perform some strange local variable declarations. But it does not seems to be case here.
MJ -
Final attributes and local variables - performance ??
Hi all,
I and a colleague have done some performance testing regarding the use of final attributes and final local variables, e.g.
with final:
public class MyClass {
private final int i;
public final void myMethod() {
final int j = 5;
// do something with i and j
}vs. non-final:
public class MyClass {
private int i;
public final void myMethod() {
int j = 5;
// do something with i and j
}I couldn't find any speed differences in a small test program, but my colleague did so in his application. Who is right ??
Still, I will have do some formal testing next week and I will post the results.
I'd prefer the version using final anyway because I find it better readable, but the issue I am having is whether I'll spend 2-3 days going through the program making everything final or not.I made some tests with final arguments to a method: I could not find any difference between final and non-final arguments. code is posted below
import java.io.*;
import java.net.*;
import java.rmi.*;
import java.util.*;
import javax.ejb.*;
import javax.naming.*;
import javax.rmi.PortableRemoteObject;
import junit.framework.*;
import junit.extensions.*;
public final class FinalVariablesTest extends TestCase /* from junit */ {
* Constructors
public FinalVariablesTest(String name) {
super(name);
* helper methods/classes
protected void setUp() throws Exception {
super.setUp();
protected void tearDown() throws Exception {
super.tearDown();
* Test Suite
public static void main(String[] args) {
junit.textui.TestRunner.run(suite());
public static Test suite() {
return new TestSuite(FinalVariablesTest.class);
* Test Cases
/** tests the effect of passing an (final or non-final) int parameter
to a method which uses the variable in a for loop.
<p>
Linux System:
cat /proc/cpuinfo
processor : 0
vendor_id : GenuineIntel
cpu family : 6
model : 8
model name : Pentium III (Coppermine)
stepping : 1
cpu MHz : 501.146
cache size : 256 KB
fdiv_bug : no
hlt_bug : no
sep_bug : no
f00f_bug : no
coma_bug : no
fpu : yes
fpu_exception : yes
cpuid level : 2
wp : yes
flags : fpu vme de pse tsc msr pae mce cx8 sep mtrr pge mca cmov pat pse36 mmx fxsr xmm
bogomips : 999.42
</pre>
<p>
Results:
<pre>
java version "1.4.0"
Java(TM) 2 Runtime Environment, Standard Edition (build 1.4.0-b92)
Java HotSpot(TM) Client VM (build 1.4.0-b92, mixed mode)
final non-final
498 500
491 494
491 493
491 494
534 494
492 494
491 494
492 493
491 494
495 494
4966 4944 (Totals)
</pre>
public final void testIntParametersToForLoop() {
final int RUNS = 10;
final int INNER = 1000000;
final int OUTER = 10;
System.out.println("-----------------------");
System.out.println("testIntParametersToForLoop");
for(int i=0; i<RUNS; i++) {
outerFinalIntParametersToForLoop(INNER, OUTER);
outerNonFinalIntParametersToForLoop(INNER, OUTER);
private final void outerFinalIntParametersToForLoop(final int INNER,
final int OUTER) {
// with final var in for loop
long start0 = System.currentTimeMillis();
for(int i=0; i<OUTER; i++) {
innerFinalIntParametersToForLoop(INNER * i);
long end0 = System.currentTimeMillis();
System.out.println(" final: " +
( end0 - start0 ) + " milliseconds");
private final void outerNonFinalIntParametersToForLoop(final int INNER,
final int OUTER) {
// with non-final var in for loop
long start1 = System.currentTimeMillis();
for(int i=0; i<OUTER; i++) {
innerNonFinalIntParametersToForLoop(INNER * i);
long end1 = System.currentTimeMillis();
System.out.println(" non final: " +
( end1 - start1 ) + " milliseconds");
private final void innerFinalIntParametersToForLoop(final int INNER) {
for(int i=0; i<INNER; i++) {
int testVar = i * INNER;
private final void innerNonFinalIntParametersToForLoop(int loops) {
for(int i=0; i<loops; i++) {
int testVar = i * loops; -
How many ways to read and write a local variable in a called VI?
Ciao!
I'm producing my first TestStand sequence. It is called "FirstAttempt" and it is made by a single step which calls a VI. One of the first dilemmas i encountered realizing this sequence is how to read and write a local variable (created going in Variables -> Locals ('FirstAttempt') -> <right click to insert local>) in the called VI.
The first way (the only one i tried) is to create a control and an indicator on the VI front panel, connect them to their respective terminals in the connector pane and then specify (going in Step Settings -> Module) that these connectors (shown in the Parameter Name column) are linked to the local variable (selected in the Value column).
The second way (not tried) consists in using TestStand API: create a Sequence Context reference on the VI front panel, link it to a property node in the block diagram, select the property "Locals" and extract from this the local variable name and value which, i think, can be readable and writable.
So...
Are the shown ways correct?
Are there other ways?
Knowing that a "local" variable can be considered "global" within the whole sequence, is there the possibility to simply create a reference to the local variable and use the reference in the called VI block diagram in order to save space in the connector pane (if using method 1) or in the block diagram (if using method 2)?
Thanks!
Message Edited by aRCo on 09-17-2009 05:09 AMHi,
Before TestStand 3 you would use the second way you quoted as its the only way.
But now you would use the first way you quoted. You may still what to pass the SequenceContext if you were going to use the TestStand API. For TestStand 3.x and above you would use this way as the first chose. (Personnelly, I would not pass the SequenceContext into a VI if I know it was never going to be used in that VI.)
Not sure I understand your final comment, maybe you are liking it to passing the reference of a control to a subVI so that the control can be updated from within the subVI.
If this is the case and you had a situation where you had a step that was running in parallel with the rest of the steps in the sequence either as a separate thread or execution and were dependent on the contents of the local variable changing from that parallel running step, then you would have to use the API SetVal method to change the local.
Hope this is clear.
Regards
Ray Farmer
Regards
Ray Farmer -
Hi everyone,
I just installed SP09 and i was testing the solution. And I found a problem with the approvals tasks.
I configured a simple ROLE approval task for validate add event. And when the runtime executes the task, the dispatcher log shows a error:
ERROR: Evaluation of approvalid failed with Exception: while trying to invoke the method java.lang.String.length() of an object loaded from local variable 'aValue'
And the notifications configured on approval task does not start either.
The approval goes to the ToDO tab of the approver, but when approved, also the ROLE stays in "Pending" State.
I downgraded the Runtime components to SP08 to test, and the approvals tasks works correctly.
Has anyone passed trough this situation in SP09?
I think there is an issue with the runtime components delivered with this initial package of SP09.
Suggestions?Hi Kelvin,2016081
The issue is caused by a program error in the Dispatcher component. A fix will be provided in Identity Management SP9 Patch 2 for the Runtime component. I expect the patch will be delivered within a week or two.
For more info about the issue and the patch please refer to SAPNote 2016081.
@Michael Penn - I might be able to assist if you provide the ticket number
Cheers,
Kristiyan
IdM Development -
Local variable needs to be declared final
This is the error code I am getting:
C:\javacode\Notepad>javac FinalProgram.java
FinalProgram.java:60: local variable textfield1 is accessed from within inner class; needs to be declared final
System.out.println("It is detected " + pressed +
textfield1);
^
1 error
Here is my code:
comments relevant to this topic are //ALL IN CAPS
import java.awt.*; //declare packages needed
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.JMenuBar;
public class FinalProgram extends JFrame
implements ActionListener {
static JFrame frame;
public void actionPerformed (ActionEvent e) {
String answer = (e.getActionCommand());
if (answer == "Get Data") {
JInternalFrame iFrame = new JInternalFrame("Get Data . ", false, true, false, false);
iFrame.setLayout(new GridLayout(8,2));
JLabel label1 = new JLabel("First Name");
JLabel label2 = new JLabel("Last Name");
JLabel label3 = new JLabel("Street");
JLabel label4 = new JLabel("City");
JLabel label5 = new JLabel("State");
JLabel label6 = new JLabel("Zip");
JLabel label7 = new JLabel("Phone");
JLabel label8 = new JLabel("Click Button to Submit Form -->");
JTextField textfield1 = new JTextField(10);
JTextField textfield2 = new JTextField(10);
JTextField textfield3 = new JTextField(10);
JTextField textfield4 = new JTextField(10);
JTextField textfield5 = new JTextField(10);
JTextField textfield6 = new JTextField(10);
JTextField textfield7 = new JTextField(10);
JButton button1 = new JButton("Submit Data");
//textfield1.addActionListener(this);
textfield1.addActionListener(this);
textfield2.addActionListener(this);
textfield3.addActionListener(this);
textfield4.addActionListener(this);
textfield5.addActionListener(this);
textfield6.addActionListener(this);
textfield7.addActionListener(this);
button1.addActionListener(new ActionListener() { //start button1.addActionListener
public void actionPerformed(ActionEvent a) { //start button1 actionPerformed
String pressed = ((JButton) a.getSource()).getText();
System.out.println("button press is detected " + pressed + textfield1); //THIS SYSTEM OUT PRINT IS A TEST, IT WORKS WHEN I DON'T HAVE THE "+ textfield1" PART, IT GIVES ME THE ERROR MESSAGE POSTED ABOVE ABOUT DECLARING IT FINAL.
I'M A BEGINNER, MY GOAL HERE, IN EASY ENGLISH, IS TO GRAB THE DATA FROM EACH TEXTFIELD AND STORE THEM IN VARIABLES, OR MORE IDEALLY IN AN ARRAY SO THAT THE REST OF MY CODE BELOW CAN WRITE THEM TO FILE, I'VE BEEN TRYING THE PAST FEW DAYS ON THIS EXPERIMENTING AND ANY SUGGESTIONS WOULD BE APPRECIATED
try {
String directoryName = "c:\\javacode\\Notepad";
String fileName = "program.txt";
File output = new File(directoryName,fileName);
output.createNewFile();
if (! output.isFile()) {
System.out.println("File creation of" + output.getPath() + "failed");
return;
BufferedWriter out = new BufferedWriter(new FileWriter(output.getPath(), true));
String[] text = {"This is the text that will be written. \r", //we pass an array, which holds the text to append to the file
"The text will be written to the file \r",
"in append mode. If the file does not \r",
"exist it will be created.\r"}; //WHAT YOU SEE HERE IS JUST A TEST, IN PLACE, I WOULD LIKE TO HAVE THE INFORMATION FOR MY TEXTFIELDS SO THAT I CAN PASS THEM THROUGH A FOR LOOP AS BELOW AND WRITE DATA FOR EACH OF THE TEXTFIELDS TO MY EXTERNAL TEXT FILE
for(int i = 0; i < text.length; i++) { //using the length of the text message we use out.Write() to write out the data. Notice that all of the code is placed into a try-catch block so we can check for any IOExceptions that occur
out.write(text[i] + "\n");
//Here I create the code to grab the actions(grab the text) from the textFields and store them into variables OR into an array
//after I have created my container to hold the information for my various textFields, then I want to create a for loop to go through each textField and write that information to a text file, separating each textField on its own line
out.close();
catch(IOException d) {
System.out.println("Error writing to file " + d);
} //end button1.addActionListener
} //end button1 actionPerformed
); //end actionListener statement
//textfield1.setSize(10, 10);
iFrame.add(label1);
iFrame.add(textfield1);
iFrame.add(label2);
iFrame.add(textfield2);
iFrame.add(label3);
iFrame.add(textfield3);
iFrame.add(label4);
iFrame.add(textfield4);
iFrame.add(label5);
iFrame.add(textfield5);
iFrame.add(label6);
iFrame.add(textfield6);
iFrame.add(label7);
iFrame.add(textfield7);
iFrame.add(label8);
iFrame.add(button1);
iFrame.setSize(200, 500);
iFrame.setVisible(true);
add(iFrame);
if (answer == "Display Data") {
JInternalFrame iFrame = new JInternalFrame("Display Data . ", false, true, false, false);
JTextArea text = new JTextArea();
JScrollPane scroller = new JScrollPane();
scroller.getViewport().add(text);
iFrame.getContentPane().add(scroller);
iFrame.setSize(200, 150);
iFrame.setVisible(true);
add(iFrame);
public FinalProgram() {
super ("Menu Example");
JMenuBar jmb = new JMenuBar();
JMenu file = new JMenu("Functions");
JMenuItem item;
file.add(item = new JMenuItem("Get Data"));
item.addActionListener (this);
file.add(item = new JMenuItem("Display Data"));
item.addActionListener (this);
jmb.add(file);
addWindowListener(new ExitListener());
setJMenuBar (jmb);
public static void main(String[] args) {
FinalProgram window = new FinalProgram();
window.setTitle("Final Program");
window.setSize(600, 600);
window.setVisible(true);
}hi,
Updated Code,
import java.awt.*; //declare packages needed
import java.awt.event.*;
import java.io.*;
import java.util.*;
import javax.swing.*;
import javax.swing.JMenuBar;
public class FinalProgram extends JFrame
implements ActionListener {
static JFrame frame;
JLabel label1 = new JLabel("First Name");
JLabel label2 = new JLabel("Last Name");
JLabel label3 = new JLabel("Street");
JLabel label4 = new JLabel("City");
JLabel label5 = new JLabel("State");
JLabel label6 = new JLabel("Zip");
JLabel label7 = new JLabel("Phone");
JLabel label8 = new JLabel("Click Button to Submit Form -->");
JTextField textfield1 = new JTextField(10);
JTextField textfield2 = new JTextField(10);
JTextField textfield3 = new JTextField(10);
JTextField textfield4 = new JTextField(10);
JTextField textfield5 = new JTextField(10);
JTextField textfield6 = new JTextField(10);
JTextField textfield7 = new JTextField(10);
JButton button1 = new JButton("Submit Data");
public void actionPerformed (ActionEvent e) {
String answer = (e.getActionCommand());
if (answer == "Get Data") {
JInternalFrame iFrame = new JInternalFrame("Get Data . ", false, true, false, false);
iFrame.setLayout(new GridLayout(8,2));
//textfield1.addActionListener(this);
textfield1.addActionListener(this);
textfield2.addActionListener(this);
textfield3.addActionListener(this);
textfield4.addActionListener(this);
textfield5.addActionListener(this);
textfield6.addActionListener(this);
textfield7.addActionListener(this);
button1.addActionListener(new ActionListener() { //start button1.addActionListener
public void actionPerformed(ActionEvent a) { //start button1 actionPerformed
String pressed = ((JButton) a.getSource()).getText();
System.out.println("button press is detected " + pressed + textfield1.getText());
try {
String directoryName = "c:\\javacode\\Notepad";
String fileName = "program.txt";
File output = new File(directoryName,fileName);
output.createNewFile();
if (! output.isFile()) {
System.out.println("File creation of" + output.getPath() + "failed");
return;
BufferedWriter out = new BufferedWriter(new FileWriter(output.getPath(), true));
String[] text = {"This is the text that will be written. \r", //we pass an array, which holds the text to append to the file
"The text will be written to the file \r",
"in append mode. If the file does not \r",
"exist it will be created.\r"}; //WHAT YOU SEE HERE IS JUST A TEST, IN PLACE, I WOULD LIKE TO HAVE THE INFORMATION FOR MY TEXTFIELDS SO THAT I CAN PASS THEM THROUGH A FOR LOOP AS BELOW AND WRITE DATA FOR EACH OF THE TEXTFIELDS TO MY EXTERNAL TEXT FILE
for(int i = 0; i < text.length; i++) { //using the length of the text message we use out.Write() to write out the data. Notice that all of the code is placed into a try-catch block so we can check for any IOExceptions that occur
out.write(text[i] + "\n");
//Here I create the code to grab the actions(grab the text) from the textFields and store them into variables OR into an array
//after I have created my container to hold the information for my various textFields, then I want to create a for loop to go through each textField and write that information to a text file, separating each textField on its own line
out.close();
catch(IOException d) {
System.out.println("Error writing to file " + d);
} //end button1.addActionListener
} //end button1 actionPerformed
); //end actionListener statement
//textfield1.setSize(10, 10);
iFrame.add(label1);
iFrame.add(textfield1);
iFrame.add(label2);
iFrame.add(textfield2);
iFrame.add(label3);
iFrame.add(textfield3);
iFrame.add(label4);
iFrame.add(textfield4);
iFrame.add(label5);
iFrame.add(textfield5);
iFrame.add(label6);
iFrame.add(textfield6);
iFrame.add(label7);
iFrame.add(textfield7);
iFrame.add(label8);
iFrame.add(button1);
iFrame.setSize(200, 500);
iFrame.setVisible(true);
add(iFrame);
if (answer == "Display Data") {
JInternalFrame iFrame = new JInternalFrame("Display Data . ", false, true, false, false);
JTextArea text = new JTextArea();
JScrollPane scroller = new JScrollPane();
scroller.getViewport().add(text);
iFrame.getContentPane().add(scroller);
iFrame.setSize(200, 150);
iFrame.setVisible(true);
add(iFrame);
public FinalProgram() {
super ("Menu Example");
JMenuBar jmb = new JMenuBar();
JMenu file = new JMenu("Functions");
JMenuItem item;
file.add(item = new JMenuItem("Get Data"));
item.addActionListener (this);
file.add(item = new JMenuItem("Display Data"));
item.addActionListener (this);
jmb.add(file);
addWindowListener(new ExitListener());
setJMenuBar (jmb);
public static void main(String[] args) {
FinalProgram window = new FinalProgram();
window.setTitle("Final Program");
window.setSize(600, 600);
window.setVisible(true);
class ExitListener extends WindowAdapter {
public void windowClosing(WindowEvent event) {
System.exit(0);
} -
Make list of names in local variable list appear in alphabetical order?
When you select a variable name from the drop down list of a local variable the list appears to be in chronological order. Is there any to make this list appear in alphabetical order?
GeorgeHi George:
You said that local variables list appears in chronological order, but you wanted to appear in alphabetic order.
You just need to set apropiate names and then use SetTabbingOrder
You can use SetTabbingOrder to order all controls and indicators of your front panel, treating every control you see in the block diagram as one
(A cluster is one of the controls you can order, but the elements inside the cluster must be ordered with ReorderControlsInCluster right-clicking the cluster)
Returning. To SetTabbingOrder you have to click on VI's EDIT menu and select Set Tabbing Order.
The front panel will turn it's color to somethin darker, and every control will be shown with a number.
That number is it's tabbing index.
At the beginning you see a 0 in the top, that means that if you click in a control, that control will become number 0, and then the number it the top will pass to be 1, so you can select the next control in order.
If your first 23 elements are ordered, you don't need to click all 23, you can just set the top number to 23 and continue ordering.
When you reorder an element, all elements before that remain the same, and the rest are added by one.
When you are don, click on OK, or discard changes with x
This SetTabbingOrder you can do with elements in your front panel, can be done with elements into a cluster and elements into a Tab Control. Only change de name (in clusters is "Reorder controls in cluster" and in Tabs is "Reorder controls in page"), but they work the same
You might be interested in reordering in groups than reordering alphabetically?
Hope it helps,
Aitortxo. -
No difference between using a local variable and a notifier in timed parallel loops?
The example code "Pass Data With Notifiers.vi" that came with LV 7.1 illustrates using notifiers with parallel loops. Just looking at two of the loops, the one that generates the sine wave and the one for "User 1", you can change the timing of the two loops and you can change the condition of the "Ignore Previous" status on the "Wait on Notification". I have a special case of this to consider, where I'm wondering if there's any reason not to use a local variable instead of the notifier:
Set the delay on the generator portion (which contains the Send Notification) to something very short, say 5 ms. Set the delay on the User 1 (which contains the Wait on Notification) to something relatively longer, say 200 ms. Set the Wait on Notification to False. Now you have a situation where the User 1 loop action is contingent only upon the loop delay time, since each time the loop timer runs the loop there will always be a value in the notifier. In this case it seems to behave just like the case where you update a local variable in the fast loop and read it in the slow one.
Is my understanding correct? Would there be a performance difference between the two methods? What do you prefer in this situation and why?
Thanks,
HoseheadHi H.,
I think your idea is to write to a Global Variable in the data-producer VI, and read it in the data-consumer VI(?)
One reason this might be less efficient than using Notifiers is if you want to graph every new value in the "consumer" - or make sure the value read in the consumer has changed at least once since the last loop.
> since each time the [consumer] loop timer runs the loop there will always be a value in the notifier...
> Would there be a performance difference between the two methods?
If you don't use the Notification "event" to synchronize the producer and consumer, then to be sure the consumer gets a new vaue, you've made the producer loop faster - every 5 ms - a waste of cpu-cycles. More often the situation is reversed, that is, there's a consumer that needs to see every single new value, and (without events) the consumer must loop faster than the producer (to catch every new value) - this is called polling and it wastes cpu-cycles.
Just about anytime one's tempted to make a loop execute "fast" to check on some value (or to make sure there's a fresh value,) there's an opportunity to improve performance through synchronization with events (including notifiers, queues, occurrances, semaphores, and rendezvous')
tbd
Message Edited by tbd on 07-09-2006 03:51 AM
"Inside every large program is a small program struggling to get out." (attributed to Tony Hoare)
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