How to call static VI reference

Sir , I have problem to call static VI refernce in my main Program of ODE solver.Give solution to my problem.this is example problem given in labVIEW 8 i.e.,ODE circuit.
Attachments:
rlcmain.vi ‏25 KB

The Help for that function tells you what to do:
ODE F(X,t) is a strictly typed reference to the VI that
implements the right-hand side of an ordinary differential equation
dX/dt=F(X,t). Create this VI by starting from the VI template located in labview\vi.lib\gmath\ode.llb\ODE rhs.vit.
There are also several examples that ship with LabVIEW showing you how to use ODE Solver.

Similar Messages

Is there a tutorial on - how to call static java methods

I have defined external JAVA resource using a .jar file and have successfully catalogged the same. Now I need to pass variables to a static method in a class and also get the return variable mapped into a BPM variable.
Can someone share sample Java Invokation code, how to call methods in a class, how to instantiate a singleton or reference an existing instance of singleton class.
Any sample code or sample projects will be useful.
Also can I se ethe java system.out.println output in BPM Logviewer
Arvind

Hi Arvind,
Sure you've done this, but the first step is to catalog the Jar file. Before an Oracle BPM project can use the Java component, the appropriate Java JAR files must be added to the project.
Add the Jar File(s) to the External Resources:
1. Right-click the External Resources item in the Project Navigator tab
2. From the pop-up menu, select New External Resource.
3. Name this new Java resource "MyNewJavaComponents" and ensure its type is Java Class Library.
4. Add the Java jar file(s)
Catalog and Expose the Java Components:
5. Add a new module in the Catalog called "IntegrationComponents".
6. Generate a Java integration component by right-clicking the IntegrationComponents module and select "Catalogue Component" -> "Java".
7. Using the Java configuration you just created called MyNewJavaComponents, click the Next button to automatically introspect the Java libraries.
8. Select the class where your method(s) are located and click the Next -> Finish buttons to have Oracle BPM generate the integration component for you.
9. If you expand the newly exposed Java component, you can see a method has been created for each public method (attributes would also be automatically created if this class had any public attributes). If you've included the appropriate BeanInfo class in the JAR, you'll note that the method parameters are appropriately named.
How to Invoke Public Java methods Exposed in the Catalog:
10. Open the method editor for an automatic activity in the process (or any BPM Object method with its "Server Side" property set to "Yes").
11. Drag one of the Java methods you just exposed inside your IntegrationComponents module into the automatic activity's method. Once you drag it in, here's what you might see if you're using the Java syntax in Oracle BPM's method editor:
(PdfGenerator).generate(outputFilename : "", contents : { }, logoImageURL : null, signatureImageURL : null);
Assuming you have "outputFilename", "sampleContent", "logoURL" and "signatureURL" variables already created in your process, change the method you just dragged in to:
IntegrationComponents.Pdfservice.PdfGenerator.generate(outputFilename : outputFilename, contents : sampleContent,
logoImageURL : logoURL, signatureImageURL : signatureURL);
Hope this helps,
Dan

JUNIT : how to call static methods through mock objects.

Hi,
I am writing unit test cases for an action class. The method which i want to test calls one static method of a helper class. Though I create mock of that helper class, but I am not able to call the static methods through the mock object as the methods are static. So the control of my test case goes to that static method and again that static method calls two or more different static methods. So by this I am testing the entire flow instead of testing the unit of code of the action class. So it can't be called as unit test ?
Can any one suggest me that how can I call static methods through mock objects.

The OP's problem is that the object under test calls a static method of a helper class, for which he wants to provide a mock class
Hence, he must break the code under test to call the mock class instead of the regular helper class (because static methods are not polymorphic)
that wouldn't have happened if this helper class had been coded to interfaces rather than static methods
instead of :
public class Helper() {
    public static void getSomeHelp();
public class MockHelper() {
    public static void getSomeHelp();
}do :
public class ClassUnderTest {
    private Helper helper;
    public void methodUnderTest() { // unchanged
        helper.getSomeHelp();
public interface Helper {
    public void getSomeHelp();
public class HelperImpl implements Helper {
    public void getSomeHelp() {
        // actual implementation
public class MockHelper implements Helper {
    public void getSomeHelp() {
        // mock implementation
}

How to call static files?

I have uploaded two documents, one MSWord and the other excel, to Shared Components / Static Files. Can someone tell me how to call these from a linked list?
Thanks

could any reply to this question, how to access the uploaded statis files.
I would also like to know can we access documents which are available on NT shares without uploading the document.

Reflection: how to call static method?

You can call an instance method for an object via
Method method = myClass.getDeclaredMethod(mName, mTypes);
Object value = method.invoke(instance, mValues);But how do you call a static method (that is perhaps in an abstract class)? Is it save to have the instance variable null?

Is it save [sic] to have the instance variablenull?Please refrain to mock at that, Peter. Even the
English often confuse "loose" and "lose", don't be
that critical to foreigners. :-)Is there something wrong? I just serach via google:
"is it save to" ... results: 800 ...
Okay, "is it safe to" : 636.000 ... :-)

Why are static methods called with null references,valid ?

This is my code :
package inheritance;
public class inh6{
     public static void method(){
     System.out.println("Called");
     public static void main(String[] args){
          inh6 t4 = null;
     t4.method();
O/P :
CalledHere t4 is a null reference and yet we are able to call a method on it,why is null pointerexception not thrown.Why are we able to call static methods using null references ?
t4 is null means it doesnot refer to any memeory address,hence how is method() called correctly.
I hope i am clear. :)
Thank you for your consideration.

punter wrote:
jverd wrote:
Memory addresses have nothing to do with it. I doubt memory addresses are even mentioned once in the JLS.
By memory address i mean the memory location the reference is pointing to.I know what you mean. But if you think it's relevant, can you show me where in the JLS it says anything about memory locations?
>
You can do that because a) t4's type is "reference to inh6" and b) method() is declared static, which means that you don't need an object to call it, just the class. That class comes from the compile time type of t4. The fact that t4 is null at runtime is irrelevant.
So at compile time the type of t4 is inh6 and hence the method is called.Is it ? Had method() not been static a NullPointerException would have been thrown.Correct.
With non-static, non-private, non-final methods, which implementation of the method gets called is determined at runtime, buy the class of the object on which it's being called. If any one of those "non"s goes away, then the method is entirely determined at compile time, and in the case of static methods, there's no instance necessary to call the method in the first place.

How to change parameters of Static VI Reference

Can anyone let me know how to change the parameters of a static vi reference please? right now when I right click on it, just says "Strictly Typed VI". I don't know how to add/delete/change the parameters of it.
Thanks,
Solved!
Go to Solution.

Hello Triple H,
This is Andrew Brown, an Applications Engineer with National Instruments. You will need to go through the process to create a new strictly typed VI reference in order to update the parameters of your Call by Reference Node. An article that details this process is Creating a Strictly Typed VI Reference That Calls VIs Dynamically.
Please let me know if you have additional questions or issues in this area.
Regards,
Andrew Brown
Applications Engineer
National Instruments

How to access a property in a static vi reference

Hi,
I'm completely new to Labview and I'm working on a project that includes controlling CANalyzer from LabView by an ActiveX control.
In CANalyzer I have a CAPL function that I need to call from LV. The problem is that the function must be created in the onInit event when starting a canalyzer measurement. The only way I have found to create the function is to use a "reg event call back" and create the function in a "static vi reference". This works and I can call the funtion from that vi, but I'm not able to call the function from anywhere else but from the "static vi reference" and since it must be strictly typed I can not add any output connector where I can add a reference.
I've been trying to solve this for thee days now and it's starting to feel hope less.
In VB the complete code would look something like:
    Dim WithEvents gCANApp As CANalyzer.Application
    Dim WithEvents gMeasurement As CANalyzer.Measurement
    Dim gSendFunction As CANalyzer.CAPLFunction
    Dim Y
    Set gCANApp = New CANalyzer.Application
    gCANApp.Open ("C:\...xxxx.cfg")
    Set gMeasurement = gCANApp.Measurement
    gMeasurement.Start
    gSendFunction.Call
   'Measurement OnInit event handler
   Private Sub gMeasurement_OnInit()
       Set gSendFunction = gCANApp.CAPL.GetFunction("MyFunction")
   End Sub
This would work fine since I have a reference to gSendFunction in my main code.
My LV code looks like this:
and my static vi ref looks like this:
What I think I need is a reference to the data thread coming from "GetFunction"
If any one can help me solve this I would be very happy!
Best Regards
Henrik

Hi,
you could add another input to your static vi ref where you input the reference to a reference display element which sits in your other vi (upper image).
Then you could make a signaling value change to the reference display element from within your static vi ref.
In your other vi set up an event structure to detect the value change. In that event close the vi - this will let you have the desired reference as output of that vi.
Regards Florian

How to call a web Service from Oracle Applications?

Hi friends,
I've posted this question on OA Framework forum , but may be it's more appropiated put it here. Sorry for do it again:
It's about how to call a web service from a Form or a .sql (via Request) in Oracle Applications:
Could you please explain here the detailed steps (with code example if it's possible) to invoke a webservice from Oracle Applications?.. how did yo do it...?
I've read differents posts here and the 33097.1 metalink note (by the way, the first recommended link in this note is broken...), but there are lots of theorical concepts and no real examples to see how/from where invoke the WS
I'll have to call one webservice (I suppose the customer will give me the interface implementation)...but I've never did it with Applications so that's why I ask you for all the detailed steps...
I work with Forms 6i, Apps 11.5.10.2 and DB 9.2.0.7.
Thanks a lot.
Jose.

Hello Jose,
I did using java program to call BPEL web services in 11.5.10.
I pasted below the metalink note for your reference (Note:250964.1)
The idea is first write a java program to call the webservice (in my case it is calling an BPEL web service, so this may not help directly), test it.
Then port the java program as specified in the note, so that you could call your web service through concurrent manager scheduler.
Is this ok?
Thanks
Arun.
======================================================
Checked for relevance on 25-Apr-2007
Application Install - Version: 11.5.8 to 11.5.10
Goal
====
How to register and create a Java concurrent program for Oracle Applications
Release 11i
Solution
========
1. Create your Java Concurrent Program (JCP) , using a text editor.
/*===========================================================================+
| Concurrent Processing Sample Code |
| |
| FILENAME |
| Hello.java |
| |
| DESCRIPTION |
| Sample Java concurrent program |
| About the simplest possible program, just writes a message to the |
| logfile and output file. |
| |
| HISTORY |
| $Log$ |
| |
+===========================================================================*/
package oracle.apps.fnd.cp.sample;
import oracle.apps.fnd.cp.request.*;
public class Hello implements JavaConcurrentProgram {
public static final String RCS_ID = "$Header$";
public void runProgram(CpContext ctx) {
ctx.getLogFile().writeln("-- Hello World! --", 0);
ctx.getOutFile().writeln("-- Hello World! --");
ctx.getReqCompletion().setCompletion(ReqCompletion.NORMAL, "");
=======================================
End Sample
=======================================
2. Create a sample directory under $JAVA_TOP:
$ mkdir $JAVA_TOPoracle/apps/fnd/cp/sample
3. Copy Hello.java into $JAVA_TOP/oracle/apps/fnd/cp/sample:
$ cp $HOME/Hello.java $JAVA_TOP/oracle/apps/fnd/cp/sample
4. Compile your java program:
javac $JAVA_TOP/oracle/apps/fnd/cp/sample/Hello.java
5. Test at the command line with following syntax:
jre -Ddbcfile=$FND_TOP/secure/your_dbc_file.dbc \
-Drequest.outfile=./outfile \
oracle.apps.fnd.cp.request.Run \
oracle.apps.fnd.cp.sample.Hello
6. Register your custom java concurrent program with Oracle Applications.
a. Navigate: Concurrent > Program > Executable
b. Enter details into the form
Executable: JCPHELLO
Shortname: JCPHELLO
Application: Application Object Library
Execution Method: Java Concurrent Program
Execution File Name: Hello (Insert a name that does not contain space or period)
Execution File Path: oracle.apps.fnd.cp.sample
c. Save the details
d. Navigate: Concurrent > Program > Define
e. Enter details into the form
Program Name: JCPHELLO
Program Shortname: JCPHELLO
Application: Application Object Library
Executable: Choose JCPHELLO from LOV
Executable Options :
f. Save the details
7. Add this new concurrent request to your responsibility request group.
a. Navigate > Security > Responsiblity > Request
b. Query System Administrator
c. Add new row and choose TestJava
d. Save the changes.
8. Run your new Hello Java Concurrent Program
Navigate: Request > Run
References
~~~~~~~~~~~
Oracle Applications Developers Manual for Release 11i A75545-01
====================================================

How to call a shell script from a java code

Hello can any one suggest me how to call a shell script from a java program that takes three parameters.
i have a shell script (msp_restore_gui) when i run this script in the command line in a RHEL5 ,SUSE10 and Debian machine it works fine .I even tested to call it from a java program and it also worked fine but when i used the same in a J2ee application where the user when clicks the restore button in a webserver this inturn sends the request to a java file named BackupManager.java where i call the shell script.But here it fails.Waiting for your suggestions.If you want i can put the code also here

yes the script is in /usr/local/mss/tools/backup and the script (msp_restore_gui) is as follows
#!/bin/sh
TIMESTAMP=`date +%d_%b_%y-%H-%M`
touch /var/backups/mss/mss_restore_"$TIMESTAMP".log
LOGFILE="/var/backups/mss/mss_restore_"$TIMESTAMP".log"
### Explode tgz file
cd /
# Checks to be done:
# root login
# assume he passes the parameter as msp_backup_<timestamp>
# check for the existence of the .tz and fileList.txt
# Checking for the root login and if not logged on as root
# permission will be denied to execute this script
logmsg(){
echo "`date`: $*" >> $LOGFILE 2>&1
echo "$*"
#usage of this script
while [ $# -ne 0 ]
do
case $1 in
-n)
shift
ARCHIVE_NAME=`find / $ -name "$1.tz" -o -name "$1.tgz" $ 2>/dev/null`
FILE_NAME=`find / -name $1_filesList.txt 2>/dev/null`
if [ x$ARCHIVE_NAME = x -a y$FILE_NAME = y ]
then
logmsg "ERROR: Files not found, Restore cannot proceed"
usage
else
tar tvzf $ARCHIVE_NAME > /dev/null 2>&1
if [ $? -ne 0 ]
then
echo "ERROR: The tar file $ARCHIVE_NAME is not proper. Restore cannot proceed"
exit 1
else
          echo "Backedup files are present, proceeding with restore......" >> $LOGFILE 2>&1
fi
fi
usage
SKIP_CLEANUP=1
STATUS=1
exit
esac
shift
done
rm -rf ./newfile
curr_ver_file="/usr/local/mss/etc/version"
/usr/local/mss/tools/backup/check_version $curr_ver_file $FILE_NAME
ret_code=$?
echo "Exit value of check_version is $ret_code"
if [ "$ret_code" != 0 ]
then
logmsg "MSP Version not matching. Exiting from restore now...."
errormsg=`cat /usr/local/mss/temp/ver_err_mesg`
logmsg $errormsg
rm -f /usr/local/mss/temp/ver_err_mesg
exit 1
else
echo "Version check is successful"
fi
#### ShutDown MSS########
/etc/init.d/mss stop
sleep 2
### Shutdown semm
/etc/init.d/semm stop
sleep 2
rm -rf `grep -v "MSP Version:" $FILE_NAME`
logmsg "MSP restore in progress......"
tar mxvfz $ARCHIVE_NAME >> $LOGFILE
sleep 5
### Call mysql restore script
/usr/local/mss/bin/mysql_alldb_restore.sh >> $LOGFILE 2>&1
if [ $? -ne 0 ]; then
logmsg "Database restore Failed. Cannot proceed further"
exit 1 ;
else
logmsg "Database restore Succeeded."
fi
### Remove DB Dump Files
rm -f /var/lib/mysql-dumps/*
### Trigger cleanup of airprism database tables
#touch /usr/local/mss/airprism/server/config/reinitdb
### Trigger re-import of software packages
touch /usr/local/mss/swdepot/reimport
### Remove log files under the "apps" directory
find /usr/local/mss/apps -name '*.log*' | xargs rm -f
find /usr/local/mss/logs -follow -name '*[._]log*' | xargs rm -f
if [ $? -ne 0 ]; then
logmsg "MSP restore Failed. Cannot proceed further"
exit 1 ;
else
logmsg "MSP restore Succeeded."
fi
# reinstall_patch is touched so that patches are re-installed after restoring of MSP.
touch /usr/local/mss/patch/bin/reinstall_patch
##### Start MSS
logmsg "restarting MSP server "
/etc/init.d/mss start
sleep 5
### Start semm
/etc/init.d/semm start
sleep 5
logmsg "MSP server is now restarted"
my jsp page backup.jsp is as follows
<%@taglib uri="portlet.tld" prefix="uif" %>
<%@taglib uri="msp-console.tld" prefix="msp" %>
<uif:defineObjects/>
<%@page import="javax.portlet.*" %>
<%@ page import="java.util.Date" %>
<%@ page import="java.util.Vector" %>
<%@ page import="java.text.DateFormat" %>
<%@ page import="com.symbol.mss.console.admin.backup.BackupManager" %>
<%@ page import="com.symbol.mss.console.admin.system.SystemInfoPortlet" %>
<%
     String STYLE_NAME = request.getParameter("style");
     if (STYLE_NAME == null) STYLE_NAME = STYLE_DEFAULT;
     final String ua = request.getHeader("User-Agent");
     BackupManager helper = null;
     PortletSession portletSession = renderRequest.getPortletSession();
     helper = (BackupManager)portletSession.getAttribute("helper");
     if (helper == null) {
          //System.err.println("Created new BackupManager");
          helper = new BackupManager();
          portletSession.setAttribute("helper", helper);
     final BackupManager backupManager = helper;
     String action = "";
     final String backupName = renderRequest.getParameter("backupName");
     String completePath = backupManager.getBackupDir() + backupName + backupManager.getBackupFileExt();
     if (backupName != null) {
          action = "backup";
     if(backupManager.backup(backupName)) {
          SystemInfoPortlet.beginRestartMSP();
          } else {
               action = "backuperror";
     final String cmd = renderRequest.getParameter("submitButton");
final String selectedBackup = renderRequest.getParameter("selectedBackup");
int tarFileStatus =0;
String backupTarFile ="";
String backupFileList ="";
     if ("Restore".equals(cmd)) {
if (selectedBackup != null) {
     tarFileStatus = backupManager.verifyTarFile(selectedBackup);
     //backupTarFile = backupManager.getRestoreFile(Integer.parseInt(selectedBackup));
     //backupFileList = backupTarFile.substring(0, backupTarFile.lastIndexOf(backupManager.getBackupFileExt()))+"_filesList.txt";
               if (tarFileStatus == 0){
     action = "restore";
     backupManager.restore(selectedBackup);
                    SystemInfoPortlet.beginRestartMSP();
          } else {
               action = "error";
} else if ("Remove".equals(cmd)) {
backupManager.remove(Integer.parseInt(selectedBackup));
     DateFormat dateFormat = DateFormat.getDateInstance(DateFormat.SHORT);
     PortletURL restoreURL = renderResponse.createActionURL();
%>
<%@ include file="/jsp/core/constants.jspf" %>
<% if (action.length() > 0) {
     if ("backup".equals(action))
%>
     <p>The MSP Appliance has been shut down in order to create the <%=backupName %> backup file,
          and will automatically restart as soon as the file has been created.
          To continue your work, please log out of the MSP Console, wait for the appliance
          to restart, and then log back in. The amount of time you'll have to wait for the
          MSP Appliance to come back online depends on the amount of information you have
          stored in the MSP Database.</p>
     <p>The full pathname for the backup file is: <%=completePath %></p>
<%     }
     else if ("restore".equals(action))
%>
     <p>The MSP Appliance has been shut down in order to restore from the <%=backupTarFile%> backup file,
          and will automatically restart as soon as the restore is complete.
          To continue your work, please log out of the MSP Console, wait for the appliance
          to restart, and then log back in. The amount of time you'll have to wait for the
          MSP Appliance to come back online depends on the amount of information you have
          stored in the MSP Database.</p>
<%     } else if ("backuperror".equals(action)) { %>
          <p><img src="images/dialogue/error_16.gif" class="icon" alt="Notify" /> Errors occurred while taking back up of MSP. Please see the backup service log file for more details.
          </P>
<%     } else if ("error".equals(action)) {
          if (tarFileStatus == 4) { %>
               <p><img src="images/dialogue/error_16.gif" class="icon" alt="Notify" /> The backup file <%=backupTarFile%> contains errors. This backup can't be restored. Please restore a valid back up.
               </P>
          <%} else if (tarFileStatus == 3) { %>
               <p><img src="images/dialogue/error_16.gif" class="icon" alt="Notify" /> The backup file list <%=backupFileList %> is missing. This file is required to restoring backup. Please get the backup file list and proceed with restoring backup.</p>
          <%} else if (tarFileStatus == 2) { %>
               <p> <img src="images/dialogue/error_16.gif" class="icon" alt="Notify" /> The backup file <%=backupTarFile%> contains errors and the backup file list <%=backupFileList%> is missing. This backup can't be restored. </p>
          <%} %>
<%     }
} else { %>
<p><strong>Note</strong>: Both backup and restore will shut down MSP temporarily. MSP will be unable to collect data from devices, send notifications, or provide MSP Console access during this time. When the backup or restore operation is complete, MSP will come back online automatically.</p>
<h3>Backup</h3>
<form action="<%= restoreURL.toString() %>" method="post">
<p>Please provide a name for your backup. MSP will provide the date automatically in the list of backups.</p>
<p><label for="<uif:namespace />backupName">Name</label> <input type="text" name="<uif:namespace />backupName" id="<uif:namespace />backupName" size="20" maxlength="256" /> <input type="submit" name="<uif:namespace />submitButton" value="Back up now" onclick="return <uif:namespace/>validateName()"/></p>
</form>
<h3>Restore</h3>
<p>This will restore all databases (device assets, collected device data, software packages, policies, etc.) to their state as of the time the backup was made. Changes since then <em>except for backups</em> will be destroyed.</p>
<%
Vector restoreList = helper.getRestoreEntries();
Vector restoreDates = helper.getRestoreDates();
Vector restoreVersions = helper.getRestoreVersions();
Vector filesStatus = helper.getBackupFilesStatus();
%>
<% if (restoreList.size() == 0) { %>
<p>There are no backups currently available.</p>
<% } else { %>
<form action="<%= restoreURL.toString() %>" method="post">
<table class="input-radios" id="<uif:namespace />existingBackups">
<thead>
<tr>
<th></th>
<th>Name</th>
<th>Date</th>
<th>MSP Version</th>
<th>Remarks </th>
</tr>
</thead>
<tfoot>
<tr>
<td colspan="4" class="actionsOnSelected">
<input type="submit" name="<uif:namespace />submitButton" value="Restore" onclick="return confirm('This action requires MSP and all related services to be shut down. Console will be unavailable if the request is submitted. The server will restart automatically once restore has been completed.');" />
<input type="submit" name="<uif:namespace />submitButton" value="Remove" onclick="return confirm('This action will remove the backup archive. You will no longer be able to restore this backup. Continue?');" />
</td>
</tr>
</tfoot>
<tbody><%-- First one (most recent) is checked by default. Every other row has class="portlet-section-alternate". Note that each ID must be unique and must match the value of the "for" attribute on the corresponding "label" element. --%>
<%
for (int i = 0; i < restoreList.size(); i++) {
%>
<tr <%= (i % 2 == 1) ? " class=\"portlet-section-alternate\"" : "" %>>
<td><input type="radio" name="<uif:namespace />selectedBackup" value="<%= i %>" id="<uif:namespace />selectedBackup-<%= i %>" <%= (i == 0) ? "checked=\"checked\"" : "" %> /></td>
<td><label for="<uif:namespace />selectedBackup-<%= i %>"><%= restoreList.elementAt(i) %></label></td>
<td><%= dateFormat.format((Date)restoreDates.elementAt(i)) %></td>
<td><%= restoreVersions.elementAt(i) %></td>
<td><%= filesStatus.elementAt(i) %></td>
</tr>
<%
%>
</tbody>
</table>
</form>
<% } %>
<% } %>
<script type="text/javascript">
<![CDATA[//><!]]>
</script>
and my BackupManager.java is as follows where the code in bold and italic is called the restore()
//============================================================================
// Symbol Technologies P R O P R I E T A R Y S O U R C E C O D E
// C O N F I D E N T I A L
// Copyright (c) 2003 Symbol Technologies. All Rights Reserved.
// All information contained herein is the property of Symbol Technologies,
// or its Licensors, and are protected copyrights and trade secrets, and may
// be covered by U.S. patents. Any reproduction or dissemination of any
// portion of this document, of the software, or other works derived from it
// is strictly forbidden unless prior written permission is obtained from
// Symbol Technologies.
//============================================================================
package com.symbol.mss.sdf.services.backup;
import java.io.*;
import java.sql.Time;
import java.text.DateFormat;
import java.util.logging.FileHandler;
import java.util.logging.Formatter;
import java.util.logging.LogRecord;
import java.lang.Process;
import java.util.*;
import org.apache.avalon.framework.configuration.Configurable;
import org.apache.avalon.framework.configuration.Configuration;
import org.apache.avalon.framework.configuration.ConfigurationException;
import org.apache.avalon.framework.logger.LogEnabled;
import org.apache.avalon.framework.logger.Logger;
import com.symbol.mss.sdf.admin.AdministratorService;
import com.symbol.mss.sdf.backup.*;
import com.symbol.mss.sdf.data.*;
* @author nramaiah
* Service to perform scheduled backups of the system state.
public class BackupManager implements BackupService, DataHandler,
LogEnabled, Configurable {
// MSS Home Path
private static String mssHome = System.getProperty("phoenix.home", File.separator + "usr" +
File.separator + "local" +
File.separator + "mss" +
File.separator);
// Backup related definitions
private static final String BACKUP_LIST_FILE_NAME = "conf" + File.separator + "files_to_backup.txt";
private static final String BACKED_UP_LIST_FILE_NAME_SUFFIX = "_filesList.txt";
private static final String BACKUP_LOCATION = File.separator + "var" + File.separator + "lib" +
File.separator + "mss-backups" + File.separator;
private static final String BACKUP_PARTITION = File.separator + "var" + File.separator + "lib";
private static final String VERIFY_BACKUP = File.separator + "usr" + File.separator + "local" +
                                                       File.separator + "mss" + File.separator+"tools"+
                                                       File.separator+"backup"+File.separator+"verifyBackup.sh";
// DB backup/restore related definitions
private static final String DB_DUMP_LOCATION = File.separator + "var" + File.separator +
"lib" + File.separator +
"mysql-dumps" + File.separator;
private static final String DB_BACKUP_SCRIPT = "bin" + File.separator + "mysql_alldb_backup.sh";
private static final String DB_RESTORE_SCRIPT = "bin" + File.separator + "mysql_alldb_restore.sh";
// Private variables
private AdministratorService m_admin = null;
private Logger m_logger = null;
private String backupLocation = null;
private String backupListFileName = null;
private String backupPartition = null;
private int backupPartitionLimit = 90;
private String dbDumpLocation = null;
private String dbBackupScript = null;
private String dbRestoreScript = null;
private List servicesBackupList = null;
private String tarFileExtension =".tgz";
private String errFileExtension =".err";
private int exitValue=0;
* Default Constructor
public BackupManager() {
servicesBackupList = new ArrayList();
* Set the administrator service implementation. Link established by Broker service.
* @param admin reference to an implementation of AdministratorService
public void setAdministrator(AdministratorService admin) {
m_admin = admin;
* Set the job publisher service implementation. Link established by Broker service.
* @param jobPublisher reference to an implementation of JobPublisherService
public void setJobPublisher(DataChannel jobPublisher) {
jobPublisher.subscribe(this);
* Gets the backup manager object.
* @return backup manager object
public BackupService getBackupService() {
return this;
* Service lifecycle method.
* @param logger logger object to be used by the service
public void enableLogging(Logger logger) {
m_logger = logger;
* Service lifecycle method.
* @param configuration service configuration object
public void configure(Configuration configuration) throws ConfigurationException {
// Verify MSS Home path
if (!mssHome.endsWith(File.separator))
mssHome += File.separator;
// Get the location where the backup file needs to be placed
backupLocation = configuration.getChild("BackupLocation").getValue(BACKUP_LOCATION);
// Verify backup directory path
if (!backupLocation.startsWith(File.separator))
backupLocation = mssHome + backupLocation;
if (!backupLocation.endsWith(File.separator))
backupLocation += File.separator;
// Get the file listing the files/directories to be backed up
backupListFileName = configuration.getChild("FilesList").getValue(BACKUP_LIST_FILE_NAME);
// Verify backup list file name path
if (!backupListFileName.startsWith(File.separator))
backupListFileName = mssHome + backupListFileName;
// Get the partition where the backups are kept
backupPartition = configuration.getChild("BackupPartition").getValue(BACKUP_PARTITION);
// Verify backup partition path
if (!backupPartition.startsWith(File.separator))
backupPartition = File.separator + backupPartition;
if (backupPartition.endsWith(File.separator))
backupPartition = backupPartition.substring(0, (backupPartition.length()-1));
// Get the limit on the amount of free space on the backup partition
backupPartitionLimit = configuration.getChild("BackupPartitionLimit").getValueAsInteger(backupPartitionLimit);
// Get the location where the DB dump files will be placed
dbDumpLocation = configuration.getChild("DBDumpLocation").getValue(DB_DUMP_LOCATION);
// Verify DB dump directory path
if (!dbDumpLocation.startsWith(File.separator))
dbDumpLocation = mssHome + dbDumpLocation;
if (!dbDumpLocation.endsWith(File.separator))
dbDumpLocation += File.separator;
// Get the name of DB dump backup script
dbBackupScript = configuration.getChild("DBBackupScript").getValue(DB_BACKUP_SCRIPT);
// Verify backup script path
if (!dbBackupScript.startsWith(File.separator))
dbBackupScript = mssHome + dbBackupScript;
// Get the name of DB dump restore script
dbRestoreScript = configuration.getChild("DBRestoreScript").getValue(DB_RESTORE_SCRIPT);
// Verify restore script path
if (!dbRestoreScript.startsWith(File.separator))
dbRestoreScript = mssHome + dbRestoreScript;
* Individual services can supply a list of files/directories to be backed up.
* These are files apart from the files specified in conf/files_to_backup.txt and
* will be backed up as well.
* @param files list of files/directories
public void filesToBackup(List files) {
synchronized(this) {
if (files != null) {
if (files.size() > 0) {
// Add the list contents to the current backup list
for (int i=0; i<files.size(); i++) {
String tStr = (String)files.get(i);
// Check for absolute or relative path
if (tStr.startsWith(File.separator))
servicesBackupList.add(tStr);
else
servicesBackupList.add(mssHome + tStr);
else
m_logger.info("Empty list of filenames. Nothing added.");
else
m_logger.info("Null list of filenames. Nothing added.");
* Individual services can supply a list of files/directories to be backed up.
* Specified files will be added to the file defining the list of files to be backed up.
* @param files list of files/directories
private void persistFilesToBackup(List files) {
synchronized(this) {
if (files != null) {
if (files.size() > 0) {
// Add the list of files provided to the end of file
try {
File file = new File(backupListFileName);
if ((file == null) || (!file.exists()))
file.createNewFile();
// Seek to the end of the file
RandomAccessFile rFile = new RandomAccessFile(file, "rw");
if (rFile != null) {
rFile.seek(rFile.length());
// Write the list contents to the file
for (int i=0; i<files.size(); i++) {
String tStr = (String)files.get(i);
// Check for absolute or relative path
if (tStr.startsWith(File.separator))
rFile.writeBytes(tStr + "\n");
else
rFile.writeBytes(mssHome + tStr + "\n");
else
m_logger.error("Error opening file " + backupListFileName);
rFile.close();
catch (Exception ex) {
ex.printStackTrace();
m_logger.error("Error adding entries to file " + backupListFileName, ex);
else
m_logger.info("Empty list of filenames. Nothing added.");
else
m_logger.info("Null list of filenames. Nothing added.");
* Command to be run during the backup process. Individual services can
* provide shell commands that will be executed before backing up the files.
* @param command shell command to be executed
private void runCommand(String command) {
* Creates a shell script at the specified location that will backup the
* files listed in the List passed in.
* @param scriptFileName location where the script needs to be created
* @param backupFileName name for the tar file being created
* @param backupList list of files to be backed up
private void createBackupScript(String scriptFileName, String backupFileName, ArrayList backupList) throws Exception {
// Create a new StringBuffer to build the contents to be written to the script file
StringBuffer buffer = new StringBuffer();
// Add the initial comment in the start script
buffer.append("#!/bin/sh\n" + "set -x\n\n");
// Check if the partition has enough space
buffer.append("### Check if the partition has enough space\n" +
// "diskUsed=`df -k | grep \"" + backupPartition + "\" | awk '{print $5}' | cut -d\"%\" -f1`\n" +
               " diskUsed=`df -k \"" + backupPartition + "\" | awk '{print $5}' | cut -d\"%\" -f1 | grep -v Use`\n" +
"echo \"Partition " + backupPartition + " is $diskUsed% used.\"\n" +
"if [ \"$diskUsed\" -lt \"" + backupPartitionLimit + "\" ]\nthen\n" +
" echo \"Starting backup...\"\n\n");
// Shutdown semmd
buffer.append(" ### Shutdown semm\n" + " /etc/init.d/semm stop\n" +
" sleep 2\n\n");
// MSP Limited release and earlier builds stop mysql DB and backup the
// /var/lib/mysql directory as it is. Starting MSP 1.0 GA release, mysql
// dump script will be integrated which will create sql scripts to
// restore the database.
// Check if mysql dump creation script exists
File mysqlDumpScript = new File(dbBackupScript);
if (mysqlDumpScript.exists()) {
// MSP 1.0 GA and later releases
// Run the script that will generate sql scripts that would re-create the DB as it is
buffer.append(" ### Call mysql dump script\n" +
" " + dbBackupScript + "\n\n");
else {
// MSP Limited release
// Add command to shutdown mysql
buffer.append(" ### Shutdown mysql\n" + " /etc/init.d/mysql stop\n\n");
// Change to root directory and create the tgz file
buffer.append(" ### Create tgz file\n" + " cd /\n");
// Build up the tar file name from the current date and time
String fileName = null;
if ((backupFileName != null) && (backupFileName.length() > 0))
fileName = backupFileName;
else {
// File name not provided by user, build one using the timestamp
Calendar cal = Calendar.getInstance();
Date date = cal.getTime();
fileName = "MSS-"
+ DateFormat.getDateInstance().format(date).replaceAll(" ", "").replaceAll(",", "")+ "-"
+ (new Time(cal.getTimeInMillis())).toString().replaceAll(":", "").substring(0,4);
String tarFileName = fileName + ".tgz";
// Get the current MSP Version
String mspVersion = getMSPVersion();
// Gather all the files to be backed up. Add them to the tar command and
// also dump them into the file maintaining the list of files being backed up
String listStr = "";
for (int i=0; i<backupList.size(); i++)
listStr += (String)backupList.get(i) + "\n";
// Dump the current MSP version and the list of files being backed up into a manifest file
String listFileName = fileName + BACKED_UP_LIST_FILE_NAME_SUFFIX;
RandomAccessFile file = new RandomAccessFile(backupLocation + listFileName, "rw");
m_logger.info("List of files/directories being backed up:\n" + listStr);
file.writeBytes("### MSP Version: " + mspVersion + " ###\n");
file.writeBytes(listStr);
file.close();
// Add the tar command to the script
buffer.append(" echo \"Creating " + backupLocation + tarFileName + "...\"\n" +
" tar cvhfz " + backupLocation + tarFileName + " `grep -v \"MSP Version:\" " +
backupLocation + listFileName + "`\n\n");
// Check if free space on the backup partition has reduced below the limit
// If enough space left, backup is retained, "mss" is made the owner of the files,
// "backup" is made the group the files belong to,
// permissions changed to be "0660" and
// backup action declared a success
// Else, backup files are deleted and declared a failure
buffer.append(" ### Check if the partition has enough space left\n" +
//" diskLeft=`df -k | grep \"" + backupPartition + "\" | awk '{print $5}' | cut -d\"%\" -f1`\n" +
" diskLeft=`df -k \"" + backupPartition + "\" | awk '{print $5}' | cut -d\"%\" -f1 | grep -v Use`\n" +
" echo \"Partition " + backupPartition + " is $diskLeft% used.\"\n" +
" if [ \"$diskLeft\" -gt \"" + backupPartitionLimit + "\" ]\n" +
" then\n" +
" ### Failure\n" +
" echo \"Partition " + backupPartition + " does not have enough space.\"\n" +
" echo \"Backup " + backupLocation + tarFileName + " will be removed.\"\n" +
" rm -f " + backupLocation + fileName + "*\n" +
" echo \"Backup Failed.\"\n" +
" else\n" +
                    " tar tvzf " + backupLocation + tarFileName + " > /dev/null 2>&1\n" +
" if [ ! -s " + backupLocation + tarFileName + " -o $? -ne 0 ] \n" +
                    " then\n" +
                    " echo \"MSP Backup operation is not successful. The tar file " + backupLocation + tarFileName + " contains errors.\"\n" +
                    " echo \"Please take the backup again\"\n" +
                    "     touch "+backupLocation+fileName+".err\n" +
" else \n" +
" ### Success\n" +
" ### Change the owner, group and permissions for the backup files\n" +
" chown mss " + backupLocation + fileName + "*\n" +
" chgrp backup " + backupLocation + fileName + "*\n" +
" chmod 0660 " + backupLocation + fileName + "*\n" +
" echo \"Backup Completed.\"\n" +
" fi\n" +
" fi\n\n");
// MSP Limited release and earlier builds re-start mysql. Starting
// MSP 1.0 GA release, mysql is not stopped and so re-start is not
// needed. sql scripts created by the dump script get packed into
// the tar file and so are deleted.
// Check if mysql dump creation script exists
if (mysqlDumpScript.exists()) {
// MSP 1.0 GA and later releases
// Remove DB dump files
buffer.append(" ### Remove DB Dump Files\n" + " rm -f " + dbDumpLocation + "*\n\n");
else {
// MSP Limited release
// Start mysql
buffer.append(" ### Start mysql\n" + " /etc/init

Static vi reference read indicator values

The objective of my code is to open a separate VI when a certain boolean button is clicked, wait for action from the user, then close the separate VI, and return its values to the main function. I have put a static VI reference in my block diagram, and then two invoke nodes: "FP.Open" and "Run VI". That works fine, but I still haven't figured out how to obtain the values of the indicator from the reference. I thought I might use a Property Node, but I couldn't find the right property to select. Any help? Thanks!

And
if you still want to proceed with the idea of calling by reference, set the invoke node 'Run VI' to wait till complete as 'True'.
Then, place another invoke node after it, for Get Control Values. You will get an array of clusters, each cluster with the control/indicator name string and its value in variant data type.
Process that array of clusters.
Post your code if need further help.
i would support 'Christian's first option, of calling the vi as a sub vi and pass the indicator value as a terminal on the connctor pane.

Static VI reference

When do people actually use the static VI reference? It seems to me that it is only useful if you want to hardcode a vi reference with its location into the code. I can only use it with the call by reference node. Is the static VI reference useful elsewhere? I know how to use it with the call by referene node when it is stictly typed, but when it is not strictly type, I don't know when to use it.
Kudos and Accepted as Solution are welcome!

tst wrote:
I use it for two additional things:
If I want to place a free running subVI into a subpanel or otherwise control it programmatically.
If I want to generate reentrant copies of a VI. The static reference ensure that the VI is in memory (included in the build) and you can then use its name or path property to open the new reference.
Number 2 for me as well. This makes reentrant calls to dynamically called VIs work nicely in EXEs as well. If I just reference a VI by name I need to be sure that that VI is in memory. This use to mean include it in the build in an EXE, and then build the path to it (my.exe\reentrant.vi) and call it. But this means I need to remember to add this to a build ever time I use this VI that calls the reentrant VI. With the static reference, the calling VI knows that the reentrant VI is needed and a dependency so it will be included by the application builder. Then when I need to call it I can get the name from the static reference it self, so again I don't even need to know the name of the VI.
Unofficial Forum Rules and Guidelines - Hooovahh - LabVIEW Overlord
If 10 out of 10 experts in any field say something is bad, you should probably take their opinion seriously.

Using static VI references in an application

Hello all you helpful forum-goers!
I am using 4 different static VI references hooked directly to "Run VI" invoke nodes, with the "Wait Until Done" and "Auto Dispose Ref" parameters both False, to run four VIs dynamically, each of which does nothing except call my re-entrant serial port input/output VI with a different COM port index number. Overall this is working pretty well. However, I have a couple questions about improving my setup.
1) Is it possible to somehow set an input parameter to the re-entrant serial port VI, and thereby be able to Invoke it directly four times in a for loop, each with a different input value? I'm not sure how I would do that, except that I've heard that you can set the value of a control of a VI using a reference to it. I also worry that using the same static VI reference to Invoke the VI 4 times would somehow re-start the same dynamic VI instance 4 times, instead of spawning 4 copies of it. However, this solution would allow me to delete the 4 VIs which do nothing except call the re-entrant VI, and my code would be simpler and more expandable (e.g. making it easy to interact with 8 serial ports in the future just by increasing the number of for loop iterations).
2) It seems to be required for me to add the 4 VIs which I Invoke dynamically to my lvproj file, and then add to the "Always Included" section of my application build properties in order for them to be included in my application executable. This was what I had to do in previous versions of my code when I referenced the VIs via a path name, but now that I changed to using static VI references, I thought they would be included automatically. LabVIEW already knows to automatically load them in memory (e.g. when I do a search it searches them even when they are not open), and they are included in the Dependencies list in my LabVIEW project, so why would they not be built in to my executable? I'd prefer not to have to add them explicitly, as it is just one more thing to forget if I change it in the future. Is there a setting or something somewhere which I can change so that they will be included in the executable automatically?
Thank you very much for your time and assistance, as always!
-Joe
Solved!
Go to Solution.

Nope. If you look at the Help for the "Run VI" method, you find the following information for "Auto Dispose Ref":
"If TRUE, the target VI detaches the reference from the main VI. When the target VI finishes executing, LabVIEW automatically disposes of the reference, along with the parallel data space. If FALSE, the main VI retains control of the target VI."
So by setting "Auto dispose" to T, you pass control of the reference to the subVI itself, and LabVIEW will dispose of the reference when the subVI finishes running.
I will second Jeff and urge you to get rid of the global variable! I haven't used a global variable in something like 14 years. I haven't needed to. Myself, I love a good notifier and would urge you to use a notifier instead of a queue if you're going to be spawning VIs. Why? Because the first instance of your spawned VI to receive the "stop" message from the queue will remove that message from the queue, thus preventing the other instances from receiving the message. So you'll have to send the message repeatedly and hope that everyone eventually receives it. If you use a notifier, anything that contains a "Wait on Notification" with that notifier reference will receive the message. I think you want multiple listeners here, right?
Ok, this afternoon I'll try to write some dummy code with a statically called VI in it, compile it into an exe, and see if I can duplicate your problem...
One question, were you just using the static VI reference by itself to call your VI, or were you using it the same way I showed in my earlier post, with "Open VI reference"? I'm just trying to look for differences between what I've done in the past which has worked, and what you're doing now which isn't working...
Jeff, what say you?

How to call variable SlideID

Hi all,
I recently started using the export function for captions for translating purpose. That´s when I first saw the variable "Slide ID". It´s apparantly not a default user or system variable but I would like to use the Slide ID as reference for bigger projects as it´s unique and doesn´t change unlike slide number. I´ve tried messing around with the available system variables, adding SlideID instead of SlideNumber and stuff like but no luck so far. Does anyone know how to call that particular variable?
Any help is appreciated.
Thanks,
goldmundig

Aside from using AS3 in a widget, I'm not sure how you could accomplish it. If you're using AS3, you can access the movieXML variable off of the maintimeline and that XML has unique identifiers for the slides as well. But that only helps you in widget scenarios. Maybe you could concatenate the slide label with some static text for a meaningful unique ID? Possibly create a variable for each slide and assign the value on slide entry?... probably more work than it's worth. It would be nice to have the Slide ID exposed...
Jim Leichliter

How to call Subroutines,Standard Text & using Internal Table in SmartForm

Hi all,
need help in the following areas.Its very urgent!
1.How to CAll Subroutines in Smart Forms
2.How to CAll Standard Text in Smart Forms
Situation:
We have an Internal Table T_SALES with all the data which am going to display in the smartform,How to retrive data from an internal table in Smart forms
Any Help in this direction would be highly appreciated.
Regards
Ramu

Hi,
When you are using quantity or currency fields, you have to mentiong the reference fileds in a tab called CURRENCY/QUANTITY FILEDS in the GLOBAL DATA node.
Specifying a Currency or Quantity Reference
Use
In the ABAP Dictionary, you can assign a currency or quantity field to a table field. In the output of these fields, the system can then insert the relevant currency or unit:
·        If the value field is in the same table as the corresponding currency or quantity field, the system recognizes the reference automatically, and formats the value field according to the currency or unit in the assigned field.
·        If the value field is in a different table from the currency or quantity field, the system cannot recognize this reference automatically.
In the second case, you must indicate this reference to the system in the form, to ensure that the value field is formatted correctly.
Procedure
You want to assign a currency or quantity field in one table (for example, CURTAB) to a value field in another table (for example, VALTAB).
       1.      Create the reference to the currency field by entering the following values:
-         Field Name: VALTAB-VALUE, if this is the value field of VALTAB that you want to display.
-         Reference Field: CURTAB-CURRENCY, which is the currency field of CURTAB.
       2.      Under Data Type, specify whether the data type is a currency or quantity.
Result
In the output of the PDF-based print form, the system formats the value field VALTAB-VALUE according to the assigned value in the currency or quantity field of the global variable CURTAB-CURRENCY.
Thanks and Regards,
Bharat Kumar Reddy.V
Message was Added by: Bharat Reddy V
Message was Added by: Bharat Reddy V

How to call static VI reference

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