Calling cvi functions from test stand using structs

WE got some Issue regarding the process of calling cvi function using test stand

I'm sorry to hear that you have some issues calling cvi functions. There is a shipping example that demonstrates how to call a CVI function and pass a structure. The example can be found in <TestStand>\Examples\StructPassing\C\Struct Passing to a C DLL.seq.
If the example program does not resolve your issues, post again and please describe the problem in detail.
Regards,
Shannon R.
Applications Engineer
National Instruments

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Calling .jsx functions from .js files using HTML Widget

Hi there,
I'm using the HTML Widget in a panel to load an html file along with some javascript files. Is there a way to call .jsx Adobe functions from a .js file? I've successfully been able to call an alert() of a .jsx file from the html but have not been able to do anything further than that.
For example:
.js file:
var x = foo('bar');
alert(x);
.jsx file:
function foo(x) {
    alert('This works');
    var dir = $.fileName;
    alert('This doesn't work because of $.fileName');
    return 'Directory: ' + dir;}
So, ultimately I would like to have an HTML Widget in my panel, press a link that will call fiddle with the open document and layer, then return some values back to the HTML Widget's js file.
Thanks

To the client browser, JSP is just HTML. Adding JS makes it DHTML, which provides the kind of applet/web page interaction you were referring to in the first post. Note that the applet and JS are both being run 'client side', whereas the JSP is generated 'server side'.
A JSP environment can in some cases replace the JS (e.g. submit a form with values to the server, and use JSP to write the resulting applet page). This can be handy in the event that the end user does not have JS enabled, in that you can offer a 'pure HTML' solution. OTOH though, it is slower (requires a round trip to the server to do what the user asked for) and most users prefer the quicker 'click and see' philosophy of the Java/JS combo.
So, my advice to you is that JSP adds very little value, here.

Is there a max number of parameters that can be passed to a C function in test stand v. 1.0.1

I have had an issue with test stand version 1.0.1 (yes, I know; it's quite old) and calling a C function thru an action step. when I call this function with 18 parameters, it seems to hang. I have called a function with 16 and it seems to work. Is this a limit of the software? I am calling the function from a windows DLL that we've created. When I try to pull the function from the dll into test stand I also get a { error...but I get that in the other function's call and it seems to work fine. Any ideas?

ok, upon re-reading what I posted I can clearly see your confusion. haha. I think there are two separate issues.
1) Are there a maximum number of parameters one can use when calling a C function from a DLL? Yes, i'm trying to call a C function from test stand.
2) when I select the "module" tab, and select which DLL contains my function, the prototype has no information associated with it (by clicking the reload prototype button). I'm not sure why, as I'm using a declspec to send the function information out of the dll, but that's another topic. So I click on the source file tab and point the window to the .cpp of my function (within the DLL's project workspace) and when it begins to parse the file, I get an error about mis-matched curly brackets and if I wish to continue, and skip the rest of the parsing.
I click "OK" and when I go back to the module tab, I am able to see all my functions, along with the parameters in the drop down menu below. I fill in all the parameters and everything looks ok; no syntax errors, or anything else seemingly suspicious. I then run my test stand code and when I get to the step which calls this function, the system hangs and cannot proceed.
Any thoughts as to what might cause these issues?

How integrate a CVI code in Test Stand

Hi,
I'm learning my self to use both Labwindows and Test Stand and i have some problems.
I want to generate 5V from my NI PCI 6509 in order to drive relays so i think to use the C code from Finder Examples in Labwindows(WriteDigChan.prj).
I tried to call this CVI code from Test Stand but I couldn't.I need to insert the WriteDigChan.dll in "Module".I don't find the .dll so i tried to create it but it dosen't work at all.
Is that .dll necessary?
Any suggestion please!
Best Regards,

It always shows me this error
Attachments:
erreur.jpg ‏144 KB

How can I pass a variable from Test Stand to CVI by reference

Hi!
I can't to pass numeric or boolean variable from Test Stand (for example: FileGlobals.StopFlag) into the step (CVI function).
Function prototype:
void __declspec(dllexport) __cdecl PC2_WaitWhileResponceAppear(tTestData *testData, tTestError *testError, int *iStopFlag).
When variable has bin changed I can't see this change from my function.
CVI 2010, Test Stand 2010
Can anybody help me?

Hey Rombar,
It is certainly possible to pass variables by reference; for example, if you go to <TestStand Directory>/Examples/Demo/C and open the computer.seq file, you can see one of the example sequences that uses CVI modules. If you click on one of these steps, you'll see that some of the parameters, such as the error information, is passed with pointers. This is a pass by reference.
To help narrow this down, it'd be good for us to figure out a few things about how the code is run. First, if you go to Configure > Adapters, select the CVI adapter and choose Configure, you can see options for this adapter. Do you have it configured to run in an external instance of CVI or as an in-process call?
Also, if you're wanting to see a change made in TestStand in your external code, this makes me think that you're wanting to run the code and then continue to execute your TestStand sequence while the code runs. How did you configure this behavior? For example, are you calling this code as a separate sequence in a new thread, or are you using another method to run this code while the sequence continues to run?
Finally, if we could see a screenshot of how you're configuring the parameters on the TestStand step, that might be helpful as well.
Daniel E.
TestStand Product Support Engineer
National Instruments

Calling a function from a dll written by using visual studio c++

Hi, how can i call a function from a dll which is written by visual studio c++ in test stand? Although the functions in dll are exported and i've chosen c/c++ adapter, i saw no function in test stand. Is there a different step while i'm calling a function from a dll written by c++ than calling a function from a dll written by cvi?

Hey Sadik,
Selecting the C/C++ DLL Adapter Module should be sufficient for this. When you drag an action step for this onto the Main Step and navigate to the location of the DLL, the function list should populate and you should be able to select the function you want to use. If this is not the case, would you be able to post this DLL so that we can test this on our end?
Regards,
Jackie
DAQ Product Marketing Engineer
National Instruments

Can I call a function from a dll in LabVIEW that returns:double*string and int.?

I have a function from a dll that return a double* string and an integer. How can I call this function from LabVIEW? There is a possibility to work in LabVIEW with a double* string?

pcbv wrote:
> Hello all, The header of the function is:
>
> "HRESULT WRAPIEnumerateDevices(WRAPI_NDIS_DEVICE **ppDeviceList, long *plItems);"
>
> where WRAPI_NDIS_DEVICE have this form:
>
> typedef struct WRAPI_NDIS_DEVICE { 
> WCHAR *pDeviceName; 
> WCHAR *pDeviceDescription; }
> WRAPI_NDIS_DEVICE; 
>
> The function is from WRAPI.dll, used for communication with wireless card.
> For my application I need to call in LabVIEW this function.
Two difficulties I can see with this.
First the application seems to allocate the array of references
internally and return a pointer to that array. In that case there must
be another function which then deallocates that array again.
Then you would need to setup the function call to have a pointer to an
int32 number for the deviceList parameter and another pointer to int32
one for the plItems parameter.
Then create another function in your DLL similar to this:
HRESULT WRAPIEnumExtractDevice(WRAPI_NDIS_DEVICE *lpDeviceList, long i,
CHAR lpszDeviceName, LONG lenDeviceName,
CHAR lpszDeviceDesc, LONG lenDeviceDesc)
if (!lpDeviceList)
return ERROR_INV_PARAMETER;
if (lpDeviceList[i].pDeviceName)
WideCharToMultiByte(CP_ACP, 0,
pDeviceList[i].pDeviceName, -1,
lpszDeviceName, lenDeviceName,
NULL, NULL);
if (lpDeviceList[i].pDeviceName)
WideCharToMultiByte(CP_ACP, 0,
pDeviceList[i].pDeviceDescription, -1,
lpszDeviceDesc, lenDeviceDesc,
NULL, NULL);
return NO_ERROR;
Pass the int32 you got from the first parameter of the previous call as
a simple int32 passed by value to this function (and make sure you don't
call this function with a higher index than (plItems - 1) returned from
the first function.
Rolf Kalbermatter
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Can LabVIEW call a function from a .sys file or is LabVIEW limited to dll access?

My vendor has sent me a .sys file with functions accessing their hardware. Can i call these function from labview directly or do I have to wrapper the .sys with a dll?

Well a sys file is a kernel device driver. LabVIEW does not have any direct way of accessing such a driver. The way kernel drivers are accessed is usually through a DLL which makes calls to WinAPI functions such as CreateFile(), ReadFile(), WriteFile(), CloseHandle() and DeviceIORequest(). Since these WinAPI calls are basically just DLL calls too, you could theoretically use the Call Library Node to call them and access the kernel device driver in such a way.
However for any kernel device driver with more than one or two device driver calls, it will certainly be easier in terms of development, debugging and maintenance of the code, to write actually a dedicated DLL in C/C++ for this device driver and access that DLL from LabVIEW, especially if you consider the LabVIEW datatype limitations when designing the DLL interface (Basically this same DLL can then be called from any other Windows development environment, be it Visual Basic (similar datatype limitation as LabVIEW), Delphi, (Visual) C, LabVIEW or also various scripting environments like Python and Lua.
Some of the necessary WindAPI calls are rather involved and pose quite a bit of trouble to get the parameter data right in LabVIEw.
Rolf Kalbermatter
CIT Engineering Netherlands
a division of Test & Measurement Solutions

Calling user function from Interface mapping

I am getting error "Bad query:ORA-00904: invalid identifier" while calling function in the mapping of an interface.
Can some one provide the syntax of calling user function from interface mapping.
Thanks,
RP

user452108 wrote:
Can some one provide the syntax of calling user function from interface mapping.Oracle's Call Iinterface, the OCI, does not work differently when coding using a Dvorak keyboard, or writing code using a pretty pink font in the editor.. or coding the call from an interface mapping (whatever the hell that that is).
You have 2 types of calls. SQL and PL/SQL.
To call a function via SQL, it can be done using a the standard cursor interface. E.g.
select MyFunkyFunction from dualIt will return the function value via a single row with a single column. The standard cursor fetch and close cursor calls are used.
To call it via PL/SQL, an anonymous PL/SQL block is needed, and the caller needs to use a bind variable to receive the value from the function. The anon block will look as follows:
begin
:bindVar := MyFunkyFunction;
end;Refer to your client's abstract layer for interfacing with the Oracle Call Interface, on how to deal with bind variables.

How to call oracle function from ejb3

i'm trying to call an oracle query-function from ejb3.
The oracle function:
create or replace FUNCTION getSecThreadCount(secId in NUMBER,avai in NUMBER)
RETURN SYS_REFCURSOR is cur SYS_REFCURSOR;
m_sql VARCHAR2(250);
BEGIN
m_sql:='select count(thrId) from thread where secId='|| secid||'
and thrAvai='|| avai;
open cur for m_sql;
return cur;
END;
I'v tried several ways to call it,but all failed:
1. the calling code:
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNativeQuery("{call getSecThreadCount(?,?) }");
 query.setParameter(1, secId);
 query.setParameter(2, avai);
 return query.getSingleResult();
but i got the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: ORA-06550: row 1, col 7:
PLS-00221: 'GETSECTHREADCOUNT' not procedure or not defined
ORA-06550: row 1, col 7:
PL/SQL: Statement ignored
2. the calling code:
@SqlResultSetMapping(name = "getSecThreadCount_Mapping")
@NamedNativeQuery(name = "getSecThreadCount",
query = "{?=call getSecThreadCount(:secId,:avai)}",
resultSetMapping = "getSecThreadCount_Mapping",
hints = {@QueryHint(name = "org.hibernate.callable", value = "true"),
 @QueryHint(name = "org.hibernate.readOnly", value = "true")})
public Object getSectionThreadCount(int secId,int avai){
 Query query=manager.createNamedQuery("getSecThreadCount");
 query.setParameter("secId", secId);
 query.setParameter("avai", avai);
 return query.getSingleResult();
but i run into the exception:
Exception in thread "main" javax.ejb.EJBException: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query; nested exception is: javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
javax.persistence.PersistenceException: org.hibernate.exception.SQLGrammarException: could not execute query
Caused by: java.sql.SQLException: lost in index IN or OUT parameter:: 3
By the way, i have successfully called the function from hibernate. And i use oracle 11g, JBoss5 RC1.
Could anyone tell me how to call the function from EJB3?
Thanks.

Here's a working model:
package.procedure: (created in example schema scott)
CREATE OR REPLACE package body data_pkg as
type c_refcursor is ref cursor;
-- function that return all emps of a certain dept
function getEmployees ( p_deptId in number
return c_refcursor
is
 l_refcursor c_refcursor;
begin
 open l_refcursor
 for
 select e.empno as emp_id
 , e.ename as emp_name
 , e.job as emp_job
 , e.hiredate as emp_hiredate
 from emp e
 where e.DEPTNO = p_deptId;
 return l_refcursor;
end getEmployees;
end data_pkg;
/entity class:
package net.app.entity;
import java.io.Serializable;
import java.util.Date;
import javax.persistence.Column;
import javax.persistence.Entity;
import javax.persistence.GeneratedValue;
import javax.persistence.GenerationType;
import javax.persistence.Id;
import javax.persistence.NamedNativeQuery;
import javax.persistence.QueryHint;
import javax.persistence.SequenceGenerator;
import javax.persistence.Table;
@SuppressWarnings("serial")
@Entity
@Table (name="emp")
@SequenceGenerator(name = "EmployeeSequence", sequenceName = "emp_seq")
@NamedNativeQuery( name = "getEmpsByDeptId"
 , query = "{ ? = call data_pkg.getEmployees(?)}"
 , resultClass = Employee.class
 , hints = { @QueryHint(name = "org.hibernate.callable", value = "true")
 , @QueryHint(name = "org.hibernate.readOnly", value = "true")
public class Employee implements Serializable
 @Id
 @Column(name="emp_id")
 @GeneratedValue(strategy = GenerationType.SEQUENCE, generator = "EmployeeSequence")
 private int id;
 @Column(name="emp_name")
 private String name;
 @Column(name="emp_job")
 private String job;
 @Column(name="emp_hiredate")
 private Date hiredate;
 // constructor
 public Employee (){}
 // getters and setters
 public int getId()
 return id;
etc...session bean:
package net.app.entity;
import java.util.ArrayList;
import java.util.List;
import javax.ejb.Stateless;
import javax.persistence.EntityManager;
import javax.persistence.PersistenceContext;
import javax.persistence.Query;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
@Stateless
public class ScottAdminImpl implements ScottAdmin
 @PersistenceContext
 private EntityManager entityManager;
 @SuppressWarnings("unchecked")
 public List<Employee> getEmployeesByDeptId(int deptId)
 ArrayList<Employee> empList;
 try
 Query query = entityManager.createNamedQuery("getEmpsByDeptId");
 query.setParameter(1, deptId);
 empList = (ArrayList<Employee>) query.getResultList();
 return empList;
 catch (Exception e)
 e.printStackTrace(System.out);
 return null;
}client:
package net.app.client;
import java.util.List;
import javax.naming.InitialContext;
import javax.naming.NamingException;
import net.app.entity.Employee;
import net.app.iface.ScottAdmin;
public class ScottClient
 public static void main(String[] args)
 try
 // create local interface
 InitialContext ctx = new InitialContext();
 ScottAdmin adminInterface = (ScottAdmin) ctx.lookup("ScottAdminImpl/remote");
 // select employees by deptno
 int deptno = 20;
 List<Employee> empList = adminInterface.getEmployeesByDeptId(deptno);
 // output
 System.out.println("Listing employees:");
 for (Employee emp : empList)
 System.out.println(emp.getId() + ": " + emp.getName() + ", " + emp.getJob() + ", " + emp.getHiredate());
 catch (NamingException e)
 e.printStackTrace(System.out);
}Basically you just ignore the refcursor outbound parameter.
This is a stored function, have yet to try outbound refcursor parameters in stored procedures...
Edited by: _Locutus on Apr 2, 2009 2:37 PM

Calling a function from SQL prompt that returns a record

Hi,
I've been trying to execute a function that is present on a different database. for eg. I am loged on to a database say 'A' and trying to execute a function present in database 'B'. this function is present in a package 'X' which has 2 functions and two procedures. From the packages i am able to execute the two procedures and one of the function.
So i guess it is not a problem with the access permissions. The function that i am trying to call say function I has got 3 OUT
parameters and 1 IN parameter. the Function returns a record. When i try to execute this function i get an error. Can you please let me know as to how exactly i need to call this function from the SQL prompt...
thanx in advance
null

Hi Anand,
As your function has 3 OUT parameters and it returns a record you can not just call it from SQL Plus. You need to write small PL/SQL program and use variables to hold the OUT values and the returned record.
Good Luck,
RajKiran
null

Calling a function from within a movieclip

How do I do this, and Is it wrong to do it this way?
I have a movieclip on the timeline and within that movieclip
it has buttons which I've placed listeners. I'm doing it this way
rather than putting the code in the document class because the
buttons don't appear right away in the movieclip (not until around
frame 10). The function is defined in the document class because it
is used with other movieclips.
Anyone have an idea on how to properly do this?

Well, I'm at least not getting an error - however, nothing is
happening when I click the button to call the function (which is
indeed public). Inside the function is a simple trace. I've even
added a param to the function just for fun, and there's no error
when calling the function from the button.

Problem calling Oracle function from Access 2007 / ADO

Hopefully, I'm posting this in the correct forum. I'm also posting on an Access forum as I'm not entirely sure where the issue lies.
I'm calling an Oracle function from Access 2007 using an ADO Command object.
The function takes three input parameters and has a return value and an output parameter. The output parameter is a BLOB, and the return value is varchar2 (either "T" or "N") based on the outcome of the function.
If I pass correct values to the function, I get the following error message (errs out on the command.execute line):
Run-time error '-2147467259 (80004005)':
[Oracle][ODBC][Ora]ORA-06502: PL/SQL: numeric or value error
ORA-06512: at line 1
Here's the function:
FUNCTION GET_ITEMREV_ATTACH(P_ORGANIZATION_ID IN NUMBER,
P_INVENTORY_ITEM_ID IN NUMBER,
P_REVISION IN VARCHAR2,
X_DRAWING OUT BLOB) RETURN VARCHAR2 IS
RESULT VARCHAR2(1);
BEGIN
RESULT := 'T';
BEGIN
SELECT L.FILE_DATA
INTO X_DRAWING
FROM FND_ATTACHED_DOCUMENTS AD,
MTL_ITEM_REVISIONS_B IR,
FND_DOCUMENTS_TL D,
FND_LOBS L
WHERE AD.ENTITY_NAME = 'MTL_ITEM_REVISIONS' AND
AD.PK1_VALUE = IR.ORGANIZATION_ID AND
AD.PK2_VALUE = IR.INVENTORY_ITEM_ID AND
AD.PK3_VALUE = IR.REVISION_ID AND
AD.CATEGORY_ID = 1001216 AND
D.DOCUMENT_ID = AD.DOCUMENT_ID AND
D.LANGUAGE = 'US' AND
L.FILE_ID = D.MEDIA_ID AND
IR.ORGANIZATION_ID = P_ORGANIZATION_ID AND
IR.INVENTORY_ITEM_ID = P_INVENTORY_ITEM_ID AND
IR.REVISION = P_REVISION;
EXCEPTION
WHEN OTHERS THEN
RESULT := 'N';
END;
RETURN(RESULT);
END GET_ITEMREV_ATTACH;
Here's the VB code I'm using to call the function:
Private Sub Command8_Click()
Dim CMD As New ADODB.Command
Dim conn As ADODB.Connection
Dim Param1 As ADODB.Parameter
Dim Param2 As ADODB.Parameter
Dim Param3 As ADODB.Parameter
Dim ParamBlob As ADODB.Parameter
Dim ParamReturn As ADODB.Parameter
Set conn = New ADODB.Connection
With conn
.ConnectionString = "Driver={Oracle in OraHome92};Dbq=OAPLY;UID=***;PWD=*******"
.CursorLocation = adUseClient
.Open
End With
Set CMD = New ADODB.Command
Set CMD.ActiveConnection = conn
CMD.CommandText = "immi_attach_pub.get_itemrev_attach"
CMD.CommandType = adCmdStoredProc
Set ParamReturn = CMD.CreateParameter("RESULT", adVarChar, adParamReturnValue, 1)
CMD.Parameters.Append ParamReturn
Set Param1 = CMD.CreateParameter("P_ORGANIZATION_ID", adInteger, adParamInput, 1, 6)
CMD.Parameters.Append Param1
Set Param2 = CMD.CreateParameter("P_INVENTORY_ITEM_ID", adInteger, adParamInput, 4, 5207)
CMD.Parameters.Append Param2
Set Param3 = CMD.CreateParameter("P_REVISION", adVarChar, adParamInput, 2, "04")
CMD.Parameters.Append Param3
Set ParamBlob = CMD.CreateParameter("X_DRAWING", adLongVarBinary, adParamOutput, 200000)
CMD.Parameters.Append ParamBlob
CMD.Execute , , adExecuteNoRecords *** this is where the error occurs
conn.Close
MsgBox CMD.Parameters("RESULT")
End Sub
I've tried using different data types for the varchar2 parameters (adVarChar, adBSTR, adChar) with no difference.
If I pass a bogus value for Param3...."'04'"...the function returns "N" indicating that it actually executed something. But, when I pass the correct value "04", it returns the above mentioned error.
I can execute the function in PL/SQL just fine, so I'm thinking there's something wrong with the parameters, datatype, or other definitions on the Access side.
Does anyone have any thoughts? I'm at a dead end with this. Sorry for the long post. Thank you.

I tried your code with 11107 ODBC/client/database (but with a NULL output blob for convenience sake) and got no errors.
If you're using 92 ODBC/client, you may want to try upgrading to something more current, or at least getting the latest patch(9208) to see if that helps. Since it works for me I'm guessing it may be a resolved bug in that version.
Hope it helps,
Greg

Calling ORACLE Functions from within CF Builder report

Hi, I have an ORACLE function that I would like to call from within my CF REPORT.
I know there is a section in the report builder where you can write coldfusion code to perform tasks, but I would rather simply call the ORACLE function for each detail row in the report
I do not want to call this function from within my main ORACLE query that I use for the report, so please don't suggest that.
Thanks so much.
-Jim

6.0.5 is not certified against 10g database, so I suggest to upgrade to 6.0.8.26 (6i patch 17) first to see if the problem is gone.

Calling a Function from another Function within CFC

Hi all,
I have many functions in my CFC that do various things, but
one query is a query that selects absolutely every record from a
table.
The thing is, I need to do a query like this in another
function to obtain only a recordcount of the same table used in
both separate functions. Instead of writing the query out again,
how can I utilise the function already written?
My question is, how can I invoke and use the results of a
query in one cffunction for another cffunction in the same CFC
component?
An example may look like the code attached...
Many thanks for your patience and help!
Mikey.

quote:
Originally posted by:
Dan Bracuk
Generally, to call a function from within a cfc, you do
exactly what you do outside a cfc.
For your specific case, if your requirements permit it, you
might consider caching the big query for a couple of seconds. Then
you can continously call the function and not have to wait for it
to run and bring back the data each time.
Do you mean to say that within a CFC function I can execute
the same cfinvoke tags I use in normal CFM pages?
Mikey.

Calling cvi functions from test stand using structs

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