Thread.ExternallySuspended method with asychronous vi

Hi,
My sequence launches a labview queued state machine using the "launch vi asynchronously" step type in teststand. The vi runs for the duration of my sequence, waiting and acting upon queue messages, initiated by certain teststand steps that call an "enqueue" labview vi. I want teststand to pause while work is being done in the vi, until the vi finishes and waits for another queue message. From what I gather reading on page 3-7 in the teststand reference manual, using the "Testand - Set thread externally suspeded.vi" in teststand palette should accomplish this. Based on reading this, I am thinking, once a queued string is recieved in the vi, set Thread.ExternallySuspended true, and after the work in the vi, set it false again to let the sequence resume. But on first experimentation, behavior did not seem to be according to this. The seqeunce continued anyway regardless of setting Thread.ExternallySuspended true. The help file says "to allow TestStand to suspend the parent execution thread while still executing code in the code module." The "allow" word implies I need to do something on the teststand side in addition, to get it to pause? If so, what?
Thanks
David J.
Solved!
Go to Solution.

David,
It sounds like you are trying to use Thread.ExternallySuspend as a synchronization mechanism. That is not its purpose. The purpose of Thread.ExternallySuspended is to let TestStand know it can treat your thread as suspended when determining whether all threads are suspended for a breakpoint. Normally, all threads within an execution must be suspended before a breakpoint can be shown.
Also, trying to synchronize things by telling teststand to suspend an execution is not likely to be the correct approach because all of the threads in TestStand are running asynchronously so by the time you tell teststand to suspend it might have already run any number of steps in other threads after you wanted it to stop, but before it got your command.
Instead, what it sounds like you are trying to do is a classic handshaking synchronization of passing some work off to a worker thread and waiting until it's done, but you are missing part of that synchronization. What I would suggest is that when you enqueue a message to the asynchronously running VI, that you should also enqueue (perhaps as part of an enqueued cluster) a labview notification as well. Then your enqueuing VI can simply wait on that notification after it does the enqueue and the asynchronous VI can simply set the notification when it is done with the work. Basically, rather than thinking about the problem from the idea of stopping the TestStand execution you can think about it from the idea of the enqueing VI needs to wait until the enqueued work is done.
If I am misunderstanding what you are trying to do and the solution I proposed is not sufficient. Please let me know in more detail what you are trying to do and perhaps I can come up with a better solution.
Hope this helps,
-Doug

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How do you invoke a method with native int array argument?

Hi,
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Jeff

Sorry, my bad. I was able to invoke static methods and instance methods with all data types except native int, short, double and float, not sure the proper ways to declare them.
After many frustrating hours, I posted the message for help, but at that time, my mind was so numb that I created a faulted example because I cut and pasted the static method invocation example to test the instance method passing int array argument.
As your post suggested, "args[0] = intArray;", that works. Thanks!
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I will honestly slap my hand three times.
jml

Trying to Imitate the html POST method with an applet

I am trying to imitate the POST method with an applet, so that I can eventually send sound from a microphone to a PHP script which will store it in a file on a server. I am starting out by trying to post a simple line of text by making the PHP script think that it is receiving the text within a POST-ed file. The reason I am doing things this way is in part because I am, for the time being, limited to a shared server without any support for servlets or any other server side java.
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link:
http://forum.java.sun.com/thread.jspa?threadID=530399&messageID=2603608
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//InputStream isFromServer;
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Here's the code:
public class AudioUptest1 extends Applet{
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AudioFormat audioFormat;
TargetDataLine targetDataLine;
SourceDataLine sourceDataLine;
DataOutputStream osToServer;
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final JButton captureBtn = new JButton("Capture");
final JPanel btnPanel = new JPanel();
public void init(){
System.out.println("Started the applet");
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catch(IOException e)
System.out.println ("Error etc. etc.");
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postsim();
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);//end addActionListener()
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setSize(250,70);
setVisible(true);
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byte tempOutBuffer[] = new byte[100];
byte tempInBuffer[] = new byte[100];
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//******The next four lines are supposed to imitate a POST upload from a form******
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Hi All,
I was trying to write a signed applet that helps the
user of the applet to browse the local hard disk and
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from Swing is what I used in my applet. The problem
is with the policy file. I am not able to trace the
exact way to write a policy file which gives a total
access to read,write,delete,execute on all the drives
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I am successful in signing the applets and performing
operations : read,write,delete & execute on a single
file but failing to grant permission for the entire
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Any help would be highly appreciated.Which policy file are you using? there might be more than one policy file.
also, u have to specify the alias of the signed certificate in the policy file to grant the necessary priviledges to the signed applet.

JSR 172: error while invoking methods with the same signature

Hi
I am facing a peculiar problem which is not making sense to me. This is what I have done:
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2. Deployed this web service (document/literal) type on Axis 1.2
3. Generated the stub classes from the wsdl file using Sun Wireless Toolkit's Stub Generator
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I enabled SOAPMonitor on Axis and saw the SOAP Request and SOAP Response messages. I observed the following:
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Any help in this regard will be greatly appreciated.
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Hi, I'm closing this thread and opening the same in another as the content got pasted in reader un friendly format and i'm unable to change the format.
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Can't fill ByteArray in EJB-Method with generated Model-Class from WD-Model

Hello everybody,
i try to call an ejb-method with data from an FileUpload-UI-Element in WD. The EJB-Method is receiving the byte-data to create a document in KM via a Web-Service.
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public FObject putFileDataSimple (byte [] btContent, String fullFileName, String username, String password)
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Request_X_putFileDataSimple
+---btContent (Node)
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+ password
btContent is of the generated Type Byte_Item, which is itself a generated Model-Class of modelClassType ARRAY
item is of Type byte
But i simply have problems to fill the context node (or the binded model-object). i tried different ways and looked at thread [https://www.sdn.sap.com/irj/scn/thread?messageID=1954223] but i cant get it work.
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try
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wdContext.currentRequest_X_putFileDataSimpleElement().setPassword("xxx");
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int j = 0;
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wdContext.currentRequest_X_putFileDataSimpleElement().modelObject().execute();
Doing this results in Error-Messages like:
Model-Object is not a complex type for every byte added this way.
And finally an IllegalArgumentException at java.lang.reflect.Array.set(Native Method)
The second way i tried is:
public boolean putKMDataSimple( com.sap.tc.webdynpro.services.sal.datatransport.api.IWDResource fin ) {
try
wdContext.currentRequest_X_putFileDataSimpleElement().setFullFileName("abc");
wdContext.currentRequest_X_putFileDataSimpleElement().setUsername("def");
wdContext.currentRequest_X_putFileDataSimpleElement().setPassword("xxx");
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int i = 1;
int j = 0;
while (i!=-1)
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     if (i!=-1)
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wdContext.currentRequest_X_putFileDataSimpleElement().modelObject().execute();
Trying so results in:
java.lang.ClassCastException: class java.lang.Byte:null incompatible with interface com.sap.tc.cmi.model.ICMIModelClass:library:com.sap.tc.cmi(at-sign)[email protected]@alive
whenn calling the setBtContent Method
I don't what to do now to fill the context/model-object the right way.
Any helpfull hints are very welcome
Edited by: Matthias Hayk on Dec 1, 2008 5:51 PM
Edited by: Matthias Hayk on Dec 2, 2008 10:56 AM

Ok Vesselin and thanx for your idea,
so i adapted the source in the way you told like the following:
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execute
[EXCEPTION]
java.lang.IllegalArgumentException
at java.lang.reflect.Array.set(Native Method)
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Rhino calling overloaded Java methods with Array parameters

Has anyone had any problems writing JavaScript code that calls overloaded Java methods?
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public void function(String s) { /* Function A */ }
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param = java.lang.reflect.Array.newInstance(java.lang.String, 2);
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haha...I can't even find my other thread :(
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Why not to use static methods - with example

Hi Everyone,
I'd like to continue the below thread about "why not to use static methods"
Why not to use static methods
with a concrete example.
In my small application I need to be able to send keystrokes. (java.awt.Robot class is used for this)
I created the following class for these "operations" with static methods:
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Thanks for any comments in advance,
lemonboston

maheshguruswamy wrote:
lemonboston wrote:
maheshguruswamy wrote:
I think a singleton might be a better approach for you. Just kill the public constructor and provide a getInstance method to provide lazy initialization.Thanks maheshguruswamy for advising on the steps to create a singleton from this class.
Could you maybe advise also about why do you say that it would be better to use singleton? What's behind it? Thanks!In short, it seems to me that a single instance of your class will be able to coordinate actions across your entire application. So a singleton should be enough.But that doesn't answer why he should prefer a singleton instead over a bunch of static methods. Functionally the two are almost identical. In both cases there's only one "thing" on which to call methods--either a single instance of the class, or the class itself.
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     return s;
}actually in the above code below part does that all, in the below code the printf statement printing correctly
JNIEXPORT jstring JNICALL
Java_HelloWorld_print(JNIEnv *env, jobject obj)
       int n;
     GetSystemTimesAddress();
     jstring s=(jstring)cpuusage();
     printf("CPU Usage from C++: %3d%%\r",s);
     return s;
}and the NPE i get is
Exception in thread "main" java.lang.NullPointerException
     at HelloWorld.print(Native Method)
     at HelloWorld.main(HelloWorld.java:10)
CPU Usage from C++:   6%any solution?
Thanks
R
Edited by: LoveOpensource on Apr 28, 2008 12:38 AM

See the function you wrote:
JNIEXPORT jstring JNICALL Java_HelloWorld_print(JNIEnv *env, jobject obj)
       int n;
     GetSystemTimesAddress();
     _jstring s=(jstring)cpuusage();_
     printf("CPU Usage from C++: %3d%%\r",s);
     return s;
}Here you try to cast from char to jstring, this is your problem, jstring Object should be created:
char str[20];
sprintf(str, "%3d", (int)cpuusage());
printf("CPU Usage from C++: %s%%\r",str);
jstring s=env->NewStringUTF(str);
return s;

Issue with SharePoint foundation 2010 to use Claims Based Auth with Certificate authentication method with ADFS 2.0

I would love some help with this issue. I have configured my SharePoint foundation 2010 site to use Claims Based Auth with Certificate authentication method with ADFS 2.0 I have a test account set up with lab.acme.com to use the ACS.
When I log into my site using Windows Auth, everything is great. However when I log in and select my ACS token issuer, I get sent, to the logon page of the ADFS, after selected the ADFS method. My browser prompt me which Certificate identity I want
to use to log in and after 3-5 second
and return me the logon page with error message “Authentication failed”
I base my setup on the technet article
http://blogs.technet.com/b/speschka/archive/2010/07/30/configuring-sharepoint-2010-and-adfs-v2-end-to-end.aspx
I validated than all my certificate are valid and able to retrieve the crl
I got in eventlog id 300
The Federation Service failed to issue a token as a result of an error during processing of the WS-Trust request.
Request type: http://schemas.xmlsoap.org/ws/2005/02/trust/RST/Issue
Additional Data
Exception details:
Microsoft.IdentityModel.SecurityTokenService.FailedAuthenticationException: MSIS3019: Authentication failed. ---> System.IdentityModel.Tokens.SecurityTokenValidationException:
ID4070: The X.509 certificate 'CN=Me, OU=People, O=Acme., C=COM' chain building failed. The certificate that was used has a trust chain that cannot be verified. Replace the certificate or change the certificateValidationMode. 'A certification chain processed
correctly, but one of the CA certificates is not trusted by the policy provider.
at Microsoft.IdentityModel.X509CertificateChain.Build(X509Certificate2 certificate)
at Microsoft.IdentityModel.Tokens.X509NTAuthChainTrustValidator.Validate(X509Certificate2 certificate)
at Microsoft.IdentityModel.Tokens.X509SecurityTokenHandler.ValidateToken(SecurityToken token)
at Microsoft.IdentityModel.Tokens.SecurityTokenElement.GetSubject()
at Microsoft.IdentityServer.Service.SecurityTokenService.MSISSecurityTokenService.GetOnBehalfOfPrincipal(RequestSecurityToken request, IClaimsPrincipal callerPrincipal)
--- End of inner exception stack trace ---
at Microsoft.IdentityServer.Service.SecurityTokenService.MSISSecurityTokenService.GetOnBehalfOfPrincipal(RequestSecurityToken request, IClaimsPrincipal callerPrincipal)
at Microsoft.IdentityServer.Service.SecurityTokenService.MSISSecurityTokenService.BeginGetScope(IClaimsPrincipal principal, RequestSecurityToken request, AsyncCallback callback, Object state)
at Microsoft.IdentityModel.SecurityTokenService.SecurityTokenService.BeginIssue(IClaimsPrincipal principal, RequestSecurityToken request, AsyncCallback callback, Object state)
at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustServiceContract.DispatchRequestAsyncResult..ctor(DispatchContext dispatchContext, AsyncCallback asyncCallback, Object asyncState)
at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustServiceContract.BeginDispatchRequest(DispatchContext dispatchContext, AsyncCallback asyncCallback, Object asyncState)
at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustServiceContract.ProcessCoreAsyncResult..ctor(WSTrustServiceContract contract, DispatchContext dispatchContext, MessageVersion messageVersion, WSTrustResponseSerializer responseSerializer, WSTrustSerializationContext
serializationContext, AsyncCallback asyncCallback, Object asyncState)
at Microsoft.IdentityModel.Protocols.WSTrust.WSTrustServiceContract.BeginProcessCore(Message requestMessage, WSTrustRequestSerializer requestSerializer, WSTrustResponseSerializer responseSerializer, String requestAction, String responseAction, String
trustNamespace, AsyncCallback callback, Object state)
System.IdentityModel.Tokens.SecurityTokenValidationException: ID4070: The X.509 certificate 'CN=Me, OU=People, O=acme., C=com' chain building
failed. The certificate that was used has a trust chain that cannot be verified. Replace the certificate or change the certificateValidationMode. 'A certification chain processed correctly, but one of the CA certificates is not trusted by the policy provider.
at Microsoft.IdentityModel.X509CertificateChain.Build(X509Certificate2 certificate)
at Microsoft.IdentityModel.Tokens.X509NTAuthChainTrustValidator.Validate(X509Certificate2 certificate)
at Microsoft.IdentityModel.Tokens.X509SecurityTokenHandler.ValidateToken(SecurityToken token)
at Microsoft.IdentityModel.Tokens.SecurityTokenElement.GetSubject()
at Microsoft.IdentityServer.Service.SecurityTokenService.MSISSecurityTokenService.GetOnBehalfOfPrincipal(RequestSecurityToken request, IClaimsPrincipal callerPrincipal)
thx
Stef71

This is perfectly correct on my case I was not adding the root properly you must add the CA and the ADFS as well, which is twice you can see below my results.
on my case was :
PS C:\Users\administrator.domain> $root = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2("C:\
cer\SP2K10\ad0001.cer")
PS C:\Users\administrator.domain> New-SPTrustedRootAuthority -Name "domain.ad0001" -Certificate $root
Certificate : [Subject]
CN=domain.AD0001CA, DC=domain, DC=com
[Issuer]
CN=domain.AD0001CA, DC=portal, DC=com
[Serial Number]
blablabla
[Not Before]
22/07/2014 11:32:05
[Not After]
22/07/2024 11:42:00
[Thumbprint]
blablabla
Name : domain.ad0001
TypeName : Microsoft.SharePoint.Administration.SPTrustedRootAuthority
DisplayName : domain.ad0001
Id : blablabla
Status : Online
Parent : SPTrustedRootAuthorityManager
Version : 17164
Properties : {}
Farm : SPFarm Name=SharePoint_Config
UpgradedPersistedProperties : {}
PS C:\Users\administrator.domain> $cert = New-Object System.Security.Cryptography.X509Certificates.X509Certificate2("C:\
cer\SP2K10\ADFS_Signing.cer")
PS C:\Users\administrator.domain> New-SPTrustedRootAuthority -Name "Token Signing Cert" -Certificate $cert
Certificate : [Subject]
CN=ADFS Signing - adfs.domain
[Issuer]
CN=ADFS Signing - adfs.domain
[Serial Number]
blablabla
[Not Before]
23/07/2014 07:14:03
[Not After]
23/07/2015 07:14:03
[Thumbprint]
blablabla
Name : Token Signing Cert
TypeName : Microsoft.SharePoint.Administration.SPTrustedRootAuthority
DisplayName : Token Signing Cert
Id : blablabla
Status : Online
Parent : SPTrustedRootAuthorityManager
Version : 17184
Properties : {}
Farm : SPFarm Name=SharePoint_Config
UpgradedPersistedProperties : {}
PS C:\Users\administrator.PORTAL>

A question about a method with generic bounded type parameter

Hello everybody,
Sorry, if I ask a question which seems basic, but
I'm new to generic types. My problem is about a method
with a bounded type parameter. Consider the following
situation:
abstract class A{     }
class B extends A{     }
abstract class C
     public abstract <T extends A> T someMethod();
public class Test extends C
     public <T extends A> T someMethod()
          return new B();
}What I want to do inside the method someMethod in the class Test, is to
return an instance of the class B.
Normally, I'm supposed to be able to do that, because an instance of
B is also an instance of A (because B extends A).
However I cannot compile this program, and here is the error message:
Test.java:16: incompatible types
found   : B
required: T
                return new B();
                       ^
1 errorany idea?
many thanks,

Hello again,
First of all, thank you very much for all the answers. After I posted the comment, I worked on the program
and I understood that in fact, as spoon_ says the only returned value can be null.
I'm agree that I asked you a very strange (and a bit stupid) question. Actually, during recent months,
I have been working with cryptography API Core in Java. I understood that there are classes and
interfaces for defining keys and key factories specification, such as KeySpec (interface) and
KeyFactorySpi (abstract class). I wanted to have some experience with these classes in order to
understand them better. So I created a class implementing the interface KeySpec, following by a
corresponding Key subclass (with some XOR algorithm that I defined myself) and everything was
compiled (JDK 1.6) and worked perfectly. Except that, when I wanted to implement a factory spi
for my classes, I saw for the first time this strange method header:
protected abstract <T extends KeySpec> T engineGetKeySpec
(Key key, Class<T> keySpec) throws InvalidKeySpecExceptionThat's why yesterday, I gave you a similar example with the classes A, B, ...
in order to not to open a complicated security discussion but just to explain the ambiguous
part for me, that is, the use of T generic parameter.
The abstract class KeyFactorySpi was defined by Sun Microsystem, in order to give to security
providers, the possibility to implement cryptography services and algorithms according to a given
RFC (or whatever technical document). The methods in this class are invoked inside the
KeyFactory class (If you have installed the JDK sources provided by Sun, You can
verify this, by looking the source code of the KeyFactory class.) So here the T parameter is a
key specification, that is, a class that implements the interface KeySpec and this class is often
defined by the provider and not Sun.
stefan.schulz wrote:
>
If you define the method to return some bound T that extends A, you cannot
return a B, because T would be declared externally at invocation time.
The definition of T as is does not make sense at all.>
He is absolutely right about that, but the problem is, as I said, here we are
talking about the implementation and not the invocation. The implementation is done
by the provider whereas the invocation is done by Sun in the class KeyFactory.
So there are completely separated.
Therefore I wonder, how a provider can finally impelment this method??
Besides, dannyyates wrote
>
Find whoever wrote the signature and shoot them. Then rewrite their code.
Actually, before you shoot them, ask them what they were trying to achieve that
is different from my first suggestion!
>
As I said, I didn't choose this method header and I'm completely agree
with your suggestion, the following method header will do the job very well
protected abstract KeySpec engineGetKeySpec (Key key, KeySpec key_spec)
throws InvalidKeySpecException and personally I don't see any interest in using a generic bounded parameter T
in this method header definition.
Once agin, thanks a lot for the answers.

Enhance method with new parameter

How can I enhance an existing method with a new Parameter?
In some tutorial is written that this should be possible. But there is no exact description.

Thx Rich Heilman
but in the Doku "Enhancements to Global Classes and Interfaces"
http://help.sap.com/saphelp_nw70/helpdata/en/58/4fb541d3d52d31e10000000a155106/content.htm
you find:
You can enhance the components of a global class or global interface by:
● Inserting new, optional formal parameters for existing methods (but no new exceptions)

Building a method with more than one result data

Hi, everyone:
I'm a little shy to ask this question, however, it's been hanging in my mind for so long, so I think I'd rather make a confession on it. You may laugh at me if you want, I'm ready for that, but I more look forward to that someone can really give me the light, or even the link, or some hint....
For your ease of reading, I give the question first, and my whole story behind:
When I need a method which can provide more than one result( in other words, multiple outputs), how can I do it in Java? As I know, either you pass and object, or the result of the function is an object will do , for the object contains the datas you want, but that means your needs for those data have to be defined in object format in advance, won't that be inconvinient? Or Java has a better solution for that?
//And here's the whole story....
I began my career as a programmer by starting with LabVIEW, it's a graphical programming language made by National Instrument, and it's powerful on DAQ, and industrial field. One of the most important issues on design is to devide your system into multiple functions( in its own term: subVI), I think it's just like applying structured analysis method.
When we dealing with functions in LabVIEW, a programmer can define his own function with mulitiple inputs and outputs, for example, I can design a function called SumAndDevide, which accepts two input ( two variables to be summed and devided) and gives two results( result of summing and that of deviding).
The methodology has its power, at least it provide the functional decomposition, and you can compose a suitable solution in certain circumstance even they are not the smallest unit function. And testing is easy. It affects me so large that I look the trail of it when I come to other programming languages. In COBOL( well, that is a VERY old COBOL version ), I was scared to find there is no protection to the inner data on the performed sections, while making a outside subroutine to be called is cubersome and really a hard work. When I came to Delphi, I knew that using the result of a function cannot satisfy me, for it give only one output, even you can define it as variant, but I think it's vague to realize. So I use the difference of called by value and called by reference to handle the problem, that is: a value parameter for the input, and a variable paramter for the output.
Well, when I came to Java, I am stunned again, now there is no passing by reference mechanism in Java, otherwise you have to pass it as an object, but that means when you need multiple outputs, the output has to be defined in object form in advance. And that will be very inconvinient!! I tried to find some solutions, but I can't. So is there any way that in Java you can define a method with multiple output? or Java handles the problem in totally different way?
Any comments will be appreciated!!
Thanks!!
aQunx from Taiwan

You missed the most common OO solution - separation of concerns and implementation hiding.
If you have a function which returns a string, that is one method of the object that provides the service.
If you have a function which returns a real, that is a different method of the object.
If both functions require common code, move that into a private method which is called by both. If the method is costly, cache the result.
eg an aerodynamics properties class, which could be done as a multivalued return of (lift, drag), refactored to independent lift() and drag() methods, which delegate to an interpolate() method, which caches the interpolated value and uses mach, pressureHeight and _alpha to determine whether it should recalculate: /**
   * Calculates the aerodynamic drag force at a given mach, alpha and pressure height.
public double drag (final double aMach, final double aPressureHeight, final double aAlpha) {
    interpolate(aMach, aPressureHeight, aAlpha);
    return _drag;
   * Calculates the aerodynamic lift force at a given mach, alpha and pressure height.
public double lift (final double aMach, final double aPressureHeight, final double aAlpha) {
    interpolate(aMach, aPressureHeight, aAlpha);
    return _lift;
private void interpolate (final double aMach, final double aPressureHeight, final double aAlpha) {
    if (aMach != _mach) {
      setMach(aMach);
      _pressureHeight = Double.NaN;
    if (aPressureHeight != _pressureHeight) {
      setPressureHeight(aPressureHeight);
      _alpha = Double.NaN;
    if (aAlpha != _alpha) {
      setAlpha(aAlpha);
... actual interpolation happens in the private setXXX methods.

Thread.ExternallySuspended method with asychronous vi

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