Get ivi instrument handle from NISE Session

In TestStand I begin my sequence with an niSE Open Session.vi and I then pass this NISE session reference around to other VI which use the niSE Connect and Disconnect VI's to connect/disconnect routes specified in MAX. This works perfectly for me. How do I convert this NISE session reference into an instrument handle for specific IVI devices in this NISE Session? I want to be able to use the "ni Switch Get Relay Position.vi". I tried using the "ni Get IVI device session.vi" but i get an error that says VI was stopped at IUseDCO. What does this mean? Is it possible to do what I'm asking?
Thanks
I'm using TestStand 3.5 and Labview 8.2
Attachments:
error.JPG ‏25 KB

Hi Chad,
The problem with the find route.vi is it just tells me if the path is available or not. It doesn’t tell me what state the relay is in. When using SPDT relays this is a problem.
I’m using a 2570 card set for SPDT operation. So if I do a find route after a reset on “Com->NO” and “Com->NC” both return path available. I understand this because I have not made a connection call to either one. If I make a call to connect “Com->NC” the relay changes states. The connection then returns a path exists. My problem comes when it comes time to disconnect. Since it is a SPDT I have to first disconnect “Com->NC” then make a call to connect “Com->NO” (which is very annoying). If someone just calls disconnect and I try to read the path availability both return path available again and the relay has changed state. How do I know for sure which pole the common is connected to?
If I open Switch Soft Front Panel it shows exactly what position the relay is in. How do I get this info to labview? This is why I was trying to get the instrument handle to the underlying IVI session so that I can look at individual relays instead of paths between endpoints.
I hope this makes sense. I know I can’t be the first one to have this problem, so if anyone has another solution I would appreciate any help.
Thanks

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What is the best way to open close and pass instrument handles from labview in teststand parallel model?

I have a number of test systems that use a parallel model with labview. We have a good number of instruments(PXI).
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Hi,
No, Below is a bit from the Session Manager Help
Currently, Session Manager supports the following instrument session types:
IVI Sessions—Use an IVI session to obtain the C-based instance handle for an IVI logical or virtual instrument name. NI Session Manager does not support IVI-COM drivers at this time. When IVI-COM drivers are available, you can use an IVI session to obtain an ActiveX interface reference to an IVI-COM driver.
VXIplug&play Sessions—Use a VXIplug&play session to obtain a C-based instance handle for a VXIplug&play logical or virtual instrument name. Configure VXIplug&play names in the <VXIplug&play directory>\<Platform directory>\NISessionMgr.ini file.
VISA Sessions—Use a VISA instrument session to obtain a C-based viSession handle to a VISA resource or logical name. Configure VISA logical names in the <VXIplug&play directory>\<Platform directory>\NISessionMgr.ini file.
Custom Sessions—Use a custom session to create a data container object that shares ActiveX objects you create or other data between software components you write. Use the Attach and Get methods to attach data to and retrieve data from a session. A custom session does not initialize, close, or own an instrument handle. The data you share with a custom session does not have to be instrumentation related. You can create a custom session with any name you request.
Regards
Ray Farmer
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IVI instrument handle data type and palette?

Hi Folks,
I'm programming a LabVIEW VI that uses the NI-Scope VIs to talk to a USB-5133. Everything seems to work well, but after calling NI-SCOPE Initialize, I have an 'insturment handle' that needs to be routed to all other NI-SCOPE calls. I'd like to bundle the 'instrument handle' into a cluster to reduce the number of shift registers in the VI, rather than route the handle through its own shift register and as a separate wire everywhere. Can you tell me the data type of 'instrument handle', and where in the palettes to find one, so I can drop it into a cluster?
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Hey rogersct,
The data type for this instrument handle would be an "IVI session of class niScope". The easiest way to place a constant of this type on your block diagram would be to right-click on the instrument handle output terminal of niScope Initialize.vi and select Create >> Constant. This should give you a constant of the appropriate data type that you can use to initialize your cluster.
You can also create a IVI session control from the front panel under I/O >> IVI Logical Name. You would then need to right-click on the control and select: Select IVI Class >> IviScope >> niScope. I always use the first method however as it is the quickest. This should be what you need but if you have any questions please don't hesitate to ask. Thanks for posting and have a great day!
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How to get access via RMI from a session bean to a remote session bean?

I have 2 J2EE applications in two different Sun Application Servers (8.0 PE). I would like to get access from one Session Bean "SB1" into Application A to Session Bean "BrickFacade" within Application B.
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"IOP00110603: (BAD_PARAM) Bad host address in -ORBInitDef"
and
Invalid URL or IOR: corbaloc:iiop://161.90.176.213:3700
javax.naming.ConfigurationException: Invalid URL or IOR: corbaloc:iiop://161.90.176.213:3700 [Root exception is org.omg.CORBA.BAD_PARAM:   vmcid: SUN minor code: 603 completed: No]
Could anyone help me? Many thanks!
Stacktrace:
"IOP00110603: (BAD_PARAM) Bad host address in -ORBInitDef"
org.omg.CORBA.BAD_PARAM: vmcid: SUN minor code: 603 completed: No
     at com.sun.corba.ee.impl.logging.NamingSystemException.insBadAddress(NamingSystemException.java:148)
     at com.sun.corba.ee.impl.logging.NamingSystemException.insBadAddress(NamingSystemException.java:166)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.badAddress(CorbalocURL.java:104)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.handleColon(CorbalocURL.java:140)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.handleIIOPColon(CorbalocURL.java:115)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.<init>(CorbalocURL.java:67)
     at com.sun.corba.ee.impl.naming.namingutil.INSURLHandler.parseURL(INSURLHandler.java:41)
     at com.sun.corba.ee.impl.resolver.INSURLOperationImpl.operate(INSURLOperationImpl.java:103)
     at com.sun.corba.ee.impl.orb.ORBImpl.string_to_object(ORBImpl.java:774)
     at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:338)
     at com.sun.jndi.cosnaming.CNCtx.initUsingCorbanameUrl(CNCtx.java:321)
     at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:247)
     at com.sun.jndi.cosnaming.CNCtx.createUsingURL(CNCtx.java:85)
     at com.sun.jndi.url.iiop.iiopURLContextFactory.getUsingURLIgnoreRest(iiopURLContextFactory.java:56)
     at com.sun.jndi.url.iiop.iiopURLContext.getRootURLContext(iiopURLContext.java:44)
     at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:182)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
     at com.sun.enterprise.naming.NamingManagerImpl.lookup(NamingManagerImpl.java:702)
     at com.sun.enterprise.naming.java.javaURLContext.lookup(javaURLContext.java:108)
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     at de.emilberlinerstudios.va.ejb.testrh.sb.TestRemoteEjbBean.getBrickFacade(TestRemoteEjbBean.java:108)
     at de.emilberlinerstudios.va.ejb.testrh.sb.TestRemoteEjbBean.startTest(TestRemoteEjbBean.java:79)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.enterprise.security.SecurityUtil$2.run(SecurityUtil.java:146)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.enterprise.security.application.EJBSecurityManager.doAsPrivileged(EJBSecurityManager.java:930)
     at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:151)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:128)
     at $Proxy7.startTest(Unknown Source)
     at de.emilberlinerstudios.va.ejb.testrh.sb._TestRemoteEjb_Stub.startTest(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.forte4j.j2ee.ejbtest.webtest.InvocableMethod$MethodIM.invoke(InvocableMethod.java:231)
     at com.sun.forte4j.j2ee.ejbtest.webtest.EjbInvoker.getInvocationResults(EjbInvoker.java:96)
     at com.sun.forte4j.j2ee.ejbtest.webtest.DispatchHelper.getForward(DispatchHelper.java:189)
     at org.apache.jsp.dispatch_jsp._jspService(dispatch_jsp.java:75)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:102)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:282)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:263)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:210)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:168)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:144)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:133)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:539)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:272)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:114)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
     at java.lang.Thread.run(Thread.java:534)
|#]
[#|2006-10-02T13:52:55.390+0200|INFO|sun-appserver-pe8.0.0_01|javax.enterprise.system.stream.out|_ThreadID=11;|2006-10-02 13:52:55 [8080-Processor4] INFO .va.ejb.testrh.sb.TestRemoteEjbBean - RemoteException when getting BrickFacade. Message:Invalid URL or IOR: corbaloc:iiop://161.90.176.213:3700
javax.naming.ConfigurationException: Invalid URL or IOR: corbaloc:iiop://161.90.176.213:3700 [Root exception is org.omg.CORBA.BAD_PARAM:   vmcid: SUN minor code: 603 completed: No]
     at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.java:367)
     at com.sun.jndi.cosnaming.CNCtx.initUsingCorbanameUrl(CNCtx.java:321)
     at com.sun.jndi.cosnaming.CNCtx.initUsingUrl(CNCtx.java:247)
     at com.sun.jndi.cosnaming.CNCtx.createUsingURL(CNCtx.java:85)
     at com.sun.jndi.url.iiop.iiopURLContextFactory.getUsingURLIgnoreRest(iiopURLContextFactory.java:56)
     at com.sun.jndi.url.iiop.iiopURLContext.getRootURLContext(iiopURLContext.java:44)
     at com.sun.jndi.toolkit.url.GenericURLContext.lookup(GenericURLContext.java:182)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
     at com.sun.enterprise.naming.NamingManagerImpl.lookup(NamingManagerImpl.java:702)
     at com.sun.enterprise.naming.java.javaURLContext.lookup(javaURLContext.java:108)
     at javax.naming.InitialContext.lookup(InitialContext.java:347)
     at de.emilberlinerstudios.va.ejb.testrh.sb.TestRemoteEjbBean.getBrickFacade(TestRemoteEjbBean.java:108)
     at de.emilberlinerstudios.va.ejb.testrh.sb.TestRemoteEjbBean.startTest(TestRemoteEjbBean.java:79)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.enterprise.security.SecurityUtil$2.run(SecurityUtil.java:146)
     at java.security.AccessController.doPrivileged(Native Method)
     at com.sun.enterprise.security.application.EJBSecurityManager.doAsPrivileged(EJBSecurityManager.java:930)
     at com.sun.enterprise.security.SecurityUtil.invoke(SecurityUtil.java:151)
     at com.sun.ejb.containers.EJBObjectInvocationHandler.invoke(EJBObjectInvocationHandler.java:128)
     at $Proxy7.startTest(Unknown Source)
     at de.emilberlinerstudios.va.ejb.testrh.sb._TestRemoteEjb_Stub.startTest(Unknown Source)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at com.sun.forte4j.j2ee.ejbtest.webtest.InvocableMethod$MethodIM.invoke(InvocableMethod.java:231)
     at com.sun.forte4j.j2ee.ejbtest.webtest.EjbInvoker.getInvocationResults(EjbInvoker.java:96)
     at com.sun.forte4j.j2ee.ejbtest.webtest.DispatchHelper.getForward(DispatchHelper.java:189)
     at org.apache.jsp.dispatch_jsp._jspService(dispatch_jsp.java:75)
     at org.apache.jasper.runtime.HttpJspBase.service(HttpJspBase.java:102)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
     at org.apache.jasper.servlet.JspServletWrapper.service(JspServletWrapper.java:282)
     at org.apache.jasper.servlet.JspServlet.serviceJspFile(JspServlet.java:263)
     at org.apache.jasper.servlet.JspServlet.service(JspServlet.java:210)
     at javax.servlet.http.HttpServlet.service(HttpServlet.java:861)
     at sun.reflect.NativeMethodAccessorImpl.invoke0(Native Method)
     at sun.reflect.NativeMethodAccessorImpl.invoke(NativeMethodAccessorImpl.java:39)
     at sun.reflect.DelegatingMethodAccessorImpl.invoke(DelegatingMethodAccessorImpl.java:25)
     at java.lang.reflect.Method.invoke(Method.java:324)
     at org.apache.catalina.security.SecurityUtil$1.run(SecurityUtil.java:246)
     at java.security.AccessController.doPrivileged(Native Method)
     at javax.security.auth.Subject.doAsPrivileged(Subject.java:500)
     at org.apache.catalina.security.SecurityUtil.execute(SecurityUtil.java:268)
     at org.apache.catalina.security.SecurityUtil.doAsPrivilege(SecurityUtil.java:162)
     at org.apache.catalina.core.ApplicationFilterChain.internalDoFilter(ApplicationFilterChain.java:236)
     at org.apache.catalina.core.ApplicationFilterChain.access$000(ApplicationFilterChain.java:55)
     at org.apache.catalina.core.ApplicationFilterChain$1.run(ApplicationFilterChain.java:145)
     at java.security.AccessController.doPrivileged(Native Method)
     at org.apache.catalina.core.ApplicationFilterChain.doFilter(ApplicationFilterChain.java:141)
     at org.apache.catalina.core.StandardWrapperValve.invoke(StandardWrapperValve.java:220)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardContextValve.invokeInternal(StandardContextValve.java:214)
     at org.apache.catalina.core.StandardContextValve.invoke(StandardContextValve.java:168)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardHostValve.invoke(StandardHostValve.java:144)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at org.apache.catalina.valves.ErrorReportValve.invoke(ErrorReportValve.java:133)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.valves.AccessLogValve.invoke(AccessLogValve.java:539)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.webservice.EjbWebServiceValve.invoke(EjbWebServiceValve.java:134)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.security.web.SingleSignOn.invoke(SingleSignOn.java:272)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at com.sun.enterprise.web.VirtualServerValve.invoke(VirtualServerValve.java:209)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.StandardEngineValve.invoke(StandardEngineValve.java:114)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:109)
     at com.sun.enterprise.web.VirtualServerMappingValve.invoke(VirtualServerMappingValve.java:166)
     at org.apache.catalina.core.StandardValveContext.invokeNext(StandardValveContext.java:107)
     at org.apache.catalina.core.StandardPipeline.invoke(StandardPipeline.java:522)
     at org.apache.catalina.core.ContainerBase.invoke(ContainerBase.java:936)
     at org.apache.coyote.tomcat5.CoyoteAdapter.service(CoyoteAdapter.java:165)
     at org.apache.coyote.http11.Http11Processor.process(Http11Processor.java:683)
     at org.apache.coyote.http11.Http11Protocol$Http11ConnectionHandler.processConnection(Http11Protocol.java:604)
     at org.apache.tomcat.util.net.TcpWorkerThread.runIt(PoolTcpEndpoint.java:542)
     at org.apache.tomcat.util.threads.ThreadPool$ControlRunnable.run(ThreadPool.java:647)
     at java.lang.Thread.run(Thread.java:534)
Caused by: org.omg.CORBA.BAD_PARAM: vmcid: SUN minor code: 603 completed: No
     at com.sun.corba.ee.impl.logging.NamingSystemException.insBadAddress(NamingSystemException.java:148)
     at com.sun.corba.ee.impl.logging.NamingSystemException.insBadAddress(NamingSystemException.java:166)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.badAddress(CorbalocURL.java:104)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.handleColon(CorbalocURL.java:140)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.handleIIOPColon(CorbalocURL.java:115)
     at com.sun.corba.ee.impl.naming.namingutil.CorbalocURL.<init>(CorbalocURL.java:67)
     at com.sun.corba.ee.impl.naming.namingutil.INSURLHandler.parseURL(INSURLHandler.java:41)
     at com.sun.corba.ee.impl.resolver.INSURLOperationImpl.operate(INSURLOperationImpl.java:103)
     at com.sun.corba.ee.impl.orb.ORBImpl.string_to_object(ORBImpl.java:774)
     at com.sun.jndi.cosnaming.CNCtx.setOrbAndRootContext(CNCtx.j|#]

Problem solved:
configuration in jndi-name was wrong:
<jndi-name>corbaname:iiop:161.90.176.213:3700#ejb/BrickFacade</jndi-name>

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I have the following problem with NI-Session-Manager:
I use Session Manager a lot on my test systems. Now that I have a test system running that makes many Session Manager Calls I noticed that after a while the system gets slower and slower. I�ve attached a Sequence File, which demonstrates this problem.
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Although my example uses a COM
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Herbert Koltschik
Sagem Communication Austria
[email protected]
Attachments:
sessionmgr_-_slow_down_problem.zip ‏63 KB

Herbert -
Thanks for the feedback. I will look into item (1).
The design of the session manager was to solve the problem of only having to share an instrument within a multithread application. If the session already exists, than you get the same session and thus the same handle, and the instrument is only initialize once and closed after the session no longer exists.
In the case of a C++ based program you would have to add the session as a member variable that has a specific lifetime. When the object is release, so will the session.
In the case of an application like TestStand, you just attach the session to the execution. Once the execution goes away, the session may go away if no other execution is using it.
In the case of L
abVIEW being called from TestStand, you are using VIs as subroutines, so either the application (TestStand) must manage the lifetime of the session, or the VI subroutine must deligate the lifetime control to a "global" VI. The item you attach to the global could be the refnum itself or the SMgr session. One way of doing this would be to create a VI that serves the refnum to you but internally manages the lifetime of the ActiveX references to the Session Manager sessions. This would be a simple vector of names and their sessions. When called the VI would lookup and return a refnum from an existing session or create a new session and return a refnum for it.
Scott Richardson
Scott Richardson
National Instruments

VISA session to an instrument handle

I tried to aquire data from TEKTDS 220. I use "set condition" to "aqu
status",
then "read waveform" subVIs. So there is a problem: I need to connect the
"VISA
session" to "instrument handle", but it doesn't work. Could you please tell
me
how to connect these two type of wires?
Thanks a lot!

It looks like you're trying to mix the tktds2x0 IVI driver with the tktds2xx LabVIEW native driver. The IVI driver has an "instrument handle" which is an IVI session, and the LabVIEW driver has a "VISA session". The two wires are not compatible. You should either use just the IVI driver or just the LabVIEW driver.

How to get Multiple Values for a key from a session object?

Hi,
It might seem dumb but I am facing a problem here with the session object. I'll paste the session object's content from the netbeans "Local Variables" window for clarity -
Name Type Value
hsession StandardSessionFacade #66
session LWSFSession #69
inherited
attributes Hashtable #80
[0] Hashtable$Entry "cart"=>#115
key String "cart"
value DummyCart #115
item null
submit null
v Vector
[0] String Full Metal Jacket
[1] String As Good As It Gets
[2] String Tim
What I want is to get the values "Full Metal Jacket", "As Good As It Gets" and "Tim" from the session obejct?
The problem I am facing is that if I do a session.getAttribute("cart"), I'll get a single value in return. What will that value be? Will it be "item", "submit" or "v"? And if I want all the values in v above, how can I get them?
Thanks.

None of the above.
HttpSession.getAttribute() will return what you put into it using HttpSession.setAttribute(). In your case, it'll return an Object which you need to cast to DummyCart. Then you can access the data in DummyCart using the API of the DummyCart class.
hth

How to Use AccessibleObjectFromWindow API in VBA to Get Excel Application Object from Excel Instance Window Handle

I need to get the Excel.application object from a window handle using AccessibleObjectFromWindow. I can't seem to make the code work. First, I successfully search for the XLMAIN windows. Then, when I get a handle, I execute the AccessibleObjectFromWindow
function. It seems to return a value of -2147467262 in all cases. Therefore, I believe that it is returning an error value. I can't figure out how to determine the meaning of this value.
If it is an error value, I believe that one or more arguments are in error. My best guess at present is that the GUID argument is incorrect. I have tried two GUID values: {00020400-0000-0000-C000-000000000046} and {90140000-0016-0409-0000-0000000FF1CE}.
I have seen both used in conjunction with OBJID_NATIVEOM. Neither one seems to work. I really would prefer not to use the second one as it has an Excel major and minor version number. I would hate to have to change this code, if a new minor version appeared.
The attached code has been commented to show which parts have been shown to work and which not. I'm at my wits end and really need help.
Thanks
'This module is located in Access 2010, but this is an Excel question.
Option Compare Database
Option Explicit
' Module-Level Declarations
'The GetDesktopWindow function and FindWindowEx function work just fine.
Public Declare Function GetDesktopWindow Lib "user32" () As Long
Public Declare Function FindWindowEx Lib "user32" Alias "FindWindowExA" _
(ByVal hWnd1 As Long, _
ByVal hWnd2 As Long, _
ByVal lpsz1 As String, _
ByVal lpsz2 As String) _
As Long
'I'm not getting the expected output from this function (see below)
Private Declare Function AccessibleObjectFromWindow& Lib "oleacc.dll" _
(ByVal hwnd&, _
ByVal dwId&, _
riid As GUID, _
xlwb As Object)
Type GUID
lData1 As Long
iData2 As Integer
iData3 As Integer
aBData4(0 To 7) As Byte
End Type
Function ExcelInstances() As Long
' Procedure-Level Declarations
' Value of OBJID_NATIVEOM verified by checking list of Windows API constants _
on this site: http://www.lw-tech.com/q1/base.htm
Const OBJID_NATIVEOM = &HFFFFFFF0
Dim hWndDesk As Long 'Desktop window
Dim hWndXL As Long 'Child window
Dim objExcelApp As Object 'Final result wanted: Excel application object
'Following variable (xlapp) to be set by AccessibleObjectFromWindow function
Dim xlapp As Object
Dim IDispatch As GUID 'GUID used in call to AccessibleObjectFrom Window function
'Set up GUID to be used for all instances of Excel that are found
Dim tmp1 As Variant 'Return value from AccessibleObjectFromWindow
' Executable Statements
SetIDispatch IDispatch
IDispatch = IDispatch
'Get a handle to the desktop
hWndDesk = GetDesktopWindow 'This seems to work
Do
'Get the next Excel window
'The following statement seems to work. We are finding and counting _
correctly all the instances of Excel. hWndXL is non-zero for each _
instance of Excel
hWndXL = FindWindowEx(GetDesktopWindow, hWndXL, "XLMAIN", vbNullString)
'If we got one, increment the count
If hWndXL > 0 Then
'This works. We correctly count all _
instances of Excel
ExcelInstances = ExcelInstances + 1
'Here is the problem. The following statement executes and returns a value of _
-2147467262. xlapp, which is passed by reference to AccessibleObjectFromWindow, _
is set to nothing. It should be set to the object for Excel.application. _
I believe that this value is not an object. I tried to reference tmp1. in the _
immediate window. There was no Intellisense.
'I think that the function in returning an error value, but I can't figure _
out what it is. I believe that AccessibleObjectFromWindow returns error _
values, but I don't know where to find their values so I can interpret the _
function's results.
'As best I can tell, the hWndXL parameter is correct. It is the handle for _
an instance of Excel. OBJID_NATIVEOM is set correctly (see constant declaration _
above). xlapp is passed by reference as a non-initialized object variable, which _
will be set by AccessiblObjectFromWindow. IDispatch may be the problem. It is set _
as shown below in the procedure SetIDispatch(ByRef ID As GUID). This procedure _
appears to work. I can see that IDispatch is set as I intended and correctly _
passed to AccessibleObjectFromWindow.
tmp1 = AccessibleObjectFromWindow(hWndXL, OBJID_NATIVEOM, IDispatch, xlapp)
'Need to write code to test tmp1 for error. If none, then set objExcelApp = _
object. Also, I exect xlapp to be set to Excel.application
End If
'Loop until we've found them all
Loop Until hWndXL = 0
End Function
Private Sub SetIDispatch(ByRef ID As GUID)
'Defines the IDispatch variable. The interface _
ID is {90140000-0016-0409-0000-0000000FF1CE}.
'NOT USING {00020400-0000-0000-C000-000000000046}, _
which could be the problem
'9 is release version - first version shipped (initial release)
'0 is release type - retail/oem
'14 is major version
'0000 is minor version
'0016 is product ID - MS Excel 2010
'0409 is language identifier - English
'0 is x86 or x64 - this is x86
'000 reserved
'0 is debug/ship
'000000FF1CE is office family ID
With ID
.lData1 = &H90140000
.iData2 = &H16
.iData3 = &H409
.aBData4(0) = &H0
.aBData4(1) = &H0
.aBData4(2) = &H0
.aBData4(3) = &H0
.aBData4(4) = &H0
.aBData4(5) = &HF
.aBData4(6) = &HF1
.aBData4(7) = &HCE
End With
End Sub
DaveInCalabasas

I don't think you can return a reference to Excel's main window like that as you are attempting to do.
Ref:
http://msdn.microsoft.com/en-us/library/windows/desktop/dd317978(v=vs.85).aspx
It's relatively straightforward to return any workbook's window in any given instance, and in turn it's parent Excel app. Try the following and adapt as required (and include error handling) -
Option Explicit
Private Declare Function FindWindowEx Lib "User32" Alias "FindWindowExA" _
(ByVal hWnd1 As Long, ByVal hWnd2 As Long, ByVal lpsz1 As String, _
ByVal lpsz2 As String) As Long
Private Declare Function IIDFromString Lib "ole32" _
(ByVal lpsz As Long, ByRef lpiid As GUID) As Long
Private Declare Function AccessibleObjectFromWindow Lib "oleacc" _
(ByVal hWnd As Long, ByVal dwId As Long, ByRef riid As GUID, _
ByRef ppvObject As Object) As Long
Private Type GUID
Data1 As Long
Data2 As Integer
Data3 As Integer
Data4(7) As Byte
End Type
Private Const S_OK As Long = &H0
Private Const IID_IDispatch As String = "{00020400-0000-0000-C000-000000000046}"
Private Const OBJID_NATIVEOM As Long = &HFFFFFFF0
Sub test()
Dim i As Long
Dim hWinXL As Long
Dim xlApp As Object ' Excel.Application
Dim wb As Object ' Excel.Workbook
hWinXL = FindWindowEx(0&, 0&, "XLMAIN", vbNullString)
While hWinXL > 0
i = i + 1
Debug.Print "Instance_" & i; hWinXL
If GetXLapp(hWinXL, xlApp) Then
For Each wb In xlApp.Workbooks
Debug.Print , wb.Name
Next
End If
hWinXL = FindWindowEx(0, hWinXL, "XLMAIN", vbNullString)
Wend
End Sub
'Function GetXLapp(hWinXL As Long, xlApp As Excel.Application) As Boolean
Function GetXLapp(hWinXL As Long, xlApp As Object) As Boolean
Dim hWinDesk As Long, hWin7 As Long
Dim obj As Object
Dim iid As GUID
Call IIDFromString(StrPtr(IID_IDispatch), iid)
hWinDesk = FindWindowEx(hWinXL, 0&, "XLDESK", vbNullString)
hWin7 = FindWindowEx(hWinDesk, 0&, "EXCEL7", vbNullString)
If AccessibleObjectFromWindow(hWin7, OBJID_NATIVEOM, iid, obj) = S_OK Then
Set xlApp = obj.Application
GetXLapp = True
End If
End Function
Note as written if an instance does not have any loaded workbooks a reference will not be returned (though a workbook can be added using DDE, but convoluted!)
FWIW there are two other very different approaches to grab all running Excel instances though something along the lines of the above is simplest.
Peter Thornton

In ldap how doe you get your role from your session.

i am getting the role from the request in ldap how do you get it from the from the session.
<%if(request.isUserInRole("management")){%>

Hi,
who writes it to the session and which attribute name is used ?
Frank

How to deploy a VO Bind variable to get value from user session....

Hello everbody...
A JSF Page has a table based on VO with two parameters. One of this parameters I will pass by operation ExecuteWithParams.
but the other parameter I need to pass a value from User session.
Is that possible? How would I do that? I´m using jdev10.1.3
Thankyou...

When you created a binding for executeWithParams in your pageDef, the action binding should have had NamedData elements for each of the parameters. These would have been assigned values from a variableIterator up in the executables section. The parameter that gets its value from user input should be left alone. For the parameter that gets its value from the user session, change the EL expression that defines its NDValue attribute so that it references the session information that you want to use. This can be a sessionScope variable that you set earlier in the session, as Frank suggests, a property of a managed bean in session scope, or some other variable.

Where can i get more instruments from?

Does anyone know where i can get more instruments from?

evanfromga wrote:
Does anyone know where i can get more instruments from?
you can find some 5,000+ SoundFonts here:
http://www.bulletsandbones.com/GB/PlugInsSoundFonts.html
how to install them (the short story):
http://www.bulletsandbones.com/GB/GBFAQ.html#installsf2s
(Let the page FULLY load. The link to your answer is at the top of your screen)
how to use them (the short story):
http://www.bulletsandbones.com/GB/GBFAQ.html#usesf2s
(Let the page FULLY load. The link to your answer is at the top of your screen)
and all about them (the long, hand-holding tutorial):
http://www.bulletsandbones.com/GB/Tutorials.html#allaboutsoundfonts
(Let the page FULLY load. The link to your answer is at the top of your screen)

Get handle from ActiveXServer (labwindow) under Excel

Hi, I would like to get the handle from ActiveXserver.
I've a software build with Labwindow CVI and this one have a ActiveX server.
In my source code, I use CA_InitActiveXServer(hinst, param_x....) to initialize the server, after that, I've different User's ActiveX server functions.
In this server functions, I get back the handle with CA_serverGetObjHandleFromIface and it's works great.
I've to use Excel to automation this software.
I don't know if I'am right but I think I've to add the .exe of my software Excel ( Excel is the ActiveX Client) . After that I would like to use the differents fonctions to automation my soft.
My problem: I don't know how to get the handle of my software.
My thought : When the software is launch, I can get the handle then use ActiveX server functions to automation this one.
If anyone can help me
Best.
Reply in english or french
Sylvain

I guess you try to call exe from VBA. You can google "call exe from vba".

Can't get IVI Power Meter error query to work properly.

I have been trying to use the IviPwrMeter Error-Query.vi to read possible errors coming from the Power Meter. However, I have found that no errors can be detected using this vi. This is because the returned value 'status' is wired over to the 'error code' input of 'IviPwrMeter Error Converter.vi' and the status value will always be equal to VI_SUCCESS as the attached code signifies.
All of this code was generated by either LabWindows/CVI and/or LabView.
If I wire the error code output of 'IviPwrMeter_error_query' function to the error code input of 'IviPwrMeter IVI error converter.vi', the errors on the Power Meter is at least detected.
Am I doing something wrong here or are there other work arounds?
Source listing of driver call:
ViStatus _VI_FUNC age4418b_error_query (ViSession vi, ViInt32 *errCode,
                                        ViChar errMessage[])
    ViStatus    error = VI_SUCCESS;
    checkErr( Ivi_LockSession (vi, VI_NULL));
    if (errCode == VI_NULL)
        viCheckParm( IVI_ERROR_INVALID_PARAMETER, 2, "Null address for Error Code");
    if (errMessage == VI_NULL)
        viCheckParm( IVI_ERROR_INVALID_PARAMETER, 3, "Null address for Error Message");
if (!Ivi_Simulating(vi))                /* call only when locked */
     ViSession   io = Ivi_IOSession(vi); /* call only when locked */
     checkErr( Ivi_SetNeedToCheckStatus (vi, VI_TRUE));
     viCheckErr( viPrintf(io, "YST:ERR?"));
  viCheckErr( viScanf (io, "%ld,\"%256[^\"]", errCode, errMessage));
else
         /* Simulate Error Query */
     *errCode = 0;
     strcpy (errMessage, "No error.");
Error:
    Ivi_UnlockSession(vi, VI_NULL);
    return error;

Dennis,
I get the same results as you if I don't have a power meter connected. However, this doesn't supprise me because the session handle is probably checked at a higher level.
The calling hiearchy is as follows (I think, because I don't have all of the code) IviPwrMeter Error Query.vi -> IviPwrMeter_error_query (IviPwrMeter.dll) ->age4418b_error_query (age4418b.dll). I would guess that the session is validated in the second layer and not the bottom layer where the actual instrument error query is happening.
Something you may try. If you have any instrument, write a simple program to get a valid handle then call the error query using the error cluster to link them together. Set a breakpoint before the error query, run the program, use MAX to send an invalid command and create an error. Then resume your original program and see if an error is reported in the error cluster after executing the IVI error query.
Bob

Get ivi instrument handle from NISE Session

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