Mathscript node access to class data

I am trying to implement some code which I developed in Matlab in Labview. The code uses functions from the Control and Optimization toolboxes, and looks like it will port easily to Mathscript. I need to parameterize a state-space model of several drugs from several parameter (age, height,weight, gender). I can see how to create an lvclass Patient with a control which uses these four parameters in the private data. I'd like to be able to duplicate the Matlab-style syntax of Patient.Age, etc, by just wiring the Patient object to a Mathscript node. There doesn't seem to be a way to do this without unbundling first. This seems inelegant, as it requires me to hard-code the names of the private data fields in the mathscript node interface. Is there a simple way to define lvclass data in a class VI's mathscript node?
Matlab 2008a, Labview 8.6, MacPro OSX 10.5.

Hello,
The MathScript syntactical element you are referring to is a structure. Unfortunately, we do not have support for structures or cell arrays in MathScript at this time. It is a limitation we are aware of and investigating for a future release. You have discovered the workaround. You will need to unbundle your class data and create separate variables for each member variable in the MathScript node.
Grant M.
Staff Software Engineer | LabVIEW Math & Signal Processing | National Instruments

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>
Gaurav Khare wrote:
> hi Kiran,
>
> you can not access the public methods of the private class because you can not create the object of that private class......
>
> Thanks and Regards
> Gaurav Khare
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How can I access another class in a MembershipRule's Expression

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try{
ServiceFactory factory = ServiceFactory.newInstance();
                    Service service = factory.createService(new QName("OutlookReminderService"));
                    QName port =new QName("OutlookReminderService","OutlookServerPort");
                    Call call =service.createCall(port);
                    call.setTargetEndpointAddress("http://localhost:8080/outlook-reminder-service/outlook?wsdl");
                    call.setProperty(Call.SOAPACTION_USE_PROPERTY, new Boolean(true));
                    call.setProperty(Call.SOAPACTION_URI_PROPERTY, "");
                    call.setProperty(ENCODING_STYLE_PROPERTY, URI_ENCODING);
                    call.getReturnType();
                    call.setOperationName(new QName(BODY_NAMESPACE_VALUE, "getList"));
                    QName QNAME_TYPE_STRING = new QName(NS_XSD, "string");
                    call.addParameter("String_1", QNAME_TYPE_STRING, ParameterMode.IN);
                    //http://ws.aftek.com/outlook-reminder/schemas
                    QName QNAME_TYPE_VO = new QName("http://schemas.xmlsoap.org/soap/encoding/", "Array");
                    System.out.println("Before Add Parameter");
               //     call.addParameter("result", QNAME_TYPE_VO, ParameterMode.OUT);
                    call.setReturnType(QNAME_TYPE_VO,ArrayList.class);
                    System.out.println("After Add Parameter");
                    Object[] params ={oUserVO.getUserName()};
                    oArrayList =(ArrayList)call.invoke(params);
                    System.out.println("After Invoked");
                    //System.out.println("invoked"+ arrayList);
               catch(SOAPFaultException faultException)
                    moLogger.debug("SOAPFaultException : ", faultException);
               catch(RemoteException oremoteException)
                    moLogger.debug("RemoteException", oremoteException);
          catch(ServiceException oServiceException)
                    moLogger.debug("ServiceException", oServiceException);          }
Error got is :
trailing block elements must have an id attribute
     at com.sun.xml.rpc.encoding.SOAPDeserializationContext.deserializeMultiRefObjects(SOAPDeserializationContext.java:81)
     at com.sun.xml.rpc.client.StreamingSender._send(StreamingSender.java:239)
     at com.sun.xml.rpc.client.dii.CallInvokerImpl.doInvoke(CallInvokerImpl.java:103)
     at com.sun.xml.rpc.client.dii.BasicCall.invoke(BasicCall.java:492)
     at com.ail.dhg.poc.business.dao.ContactDAO.getList(ContactDAO.java:255)
     at com.ail.dhg.poc.business.facade.ContactFacade.getList(ContactFacade.java:189)
     at com.ail.dhg.poc.business.AcceptInput.main(AcceptInput.java:72)
java.lang.NullPointerException
     at com.ail.dhg.poc.business.dao.ContactDAO.getList(ContactDAO.java:277)
     at com.ail.dhg.poc.business.facade.ContactFacade.getList(ContactFacade.java:189)
     at com.ail.dhg.poc.business.AcceptInput.main(AcceptInput.java:72)
Message was edited by:
trupti_d

Use lower case letters for your variable names (name, pwd). The code works then.
package com.bluenile.bean;
import java.io.*;
public class Bean1 implements Serializable
private String name="Uname";
private String pwd="Pword";
public String getName()
return name;
public String getPwd()
return pwd;
void setName(String name)
this.name = name;
void setPwd(String pwd)
this.pwd = pwd;
<HTML>
<BODY BGCOLOR="#FFFFFF">
<%@ page language="java" contentType="text/html" %>
<jsp:useBean id="b1" class="com.bluenile.bean.Bean1" />
<ul>
<li>Name : <jsp:getProperty name="b1" property="name" />
<li>Pwd : <jsp:getProperty name="b1" property="pwd" />
</ul>
</BODY>
</HTML>

IXML - Checking if a specific node exists in XML data

Hi,
I´m reading XML data by using iXML classes. One XML file I´m reading contains header and
item data.
Right now I´m starting with reading the header attributes and then read all nested nodes and their attribute data. That works all fine, but now I had the error, that the XML file wrongly didn´t contain the items.
My XML reading method then ended up in a dump because the node was null:
l_node = l_iterator->get_next( ).
Can anybody give me an advice, how to check at the beginning of reading my xml data, if a specific node (in my case the node for items) exists in the XML data? If not, I want to stop with an error message. I want to check that at the beginning, before reading all element data, to keep my method structured.
Thank you very much!

Hi,
You can create a filter and set that filter to the iterator. If this is done the iterator returns you only the node with a specific node name or node ID.
You can also check the parsing in the following WIKI code gallery
https://wiki.sdn.sap.com/wiki/x/JoDmAQ
Subroutines create_set_filter_attribute and parse_xml_file would be helpful.

How to synchronize concurrent access to static data in ABAP Objects

Hi,
1) First of all I mwould like to know the scope of static (class-data) data of an ABAP Objects Class: If changing a static data variable is that change visible to all concurrent processes in the same Application Server?
2) If that is the case. How can concurrent access to such data (that can be shared between many processes) be controlled. In C one could use semaphores and in Java Synchronized methods and the monitor concept. But what controls are available in ABAP for controlling concurrent access to in-memory data?
Many thanks for your help!
Regards,
Christian

Hello Christian
Here is an example that shows that the static attributes of a class are not shared between two reports that are linked via SUBMIT statement.
*& Report ZUS_SDN_OO_STATIC_ATTRIBUTES
REPORT zus_sdn_oo_static_attributes.
DATA:
gt_list        TYPE STANDARD TABLE OF abaplist,
go_static      TYPE REF TO zcl_sdn_static_attributes.
<i>* CONSTRUCTOR method of class ZCL_SDN_STATIC_ATTRIBUTES:
**METHOD constructor.
*** define local data
** DATA:
**    ld_msg    TYPE bapi_msg.
** ADD id_count TO md_count.
**ENDMETHOD.
* Static public attribute MD_COUNT (type i), initial value = 1</i>
PARAMETERS:
p_called(1) TYPE c DEFAULT ' ' NO-DISPLAY.
START-OF-SELECTION.
<b>* Initial state of static attribute:
*    zcl_sdn_static_attributes=>md_count = 0</b>
syst-index = 0.
WRITE: / syst-index, '. object: static counter=',
           zcl_sdn_static_attributes=>md_count.
DO 5 TIMES.
<b>*   Every time sy-index is added to md_count</b>
    CREATE OBJECT go_static
      EXPORTING
        id_count = syst-index.
    WRITE: / syst-index, '. object: static counter=',
             zcl_sdn_static_attributes=>md_count.
<b>*   After the 3rd round we start the report again (via SUBMIT)
*   and return the result via list memory.
*   If the value of the static attribute is not reset we would
*   start with initial value of md_count = 7 (1+1+2+3).</b>
    IF ( p_called = ' ' AND
         syst-index = 3 ).
      SUBMIT zus_sdn_oo_static_attributes EXPORTING LIST TO MEMORY
        WITH p_called = 'X'
      AND RETURN.
      CALL FUNCTION 'LIST_FROM_MEMORY'
        TABLES
          listobject = gt_list
        EXCEPTIONS
          not_found = 1
          OTHERS     = 2.
      IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
      CALL FUNCTION 'DISPLAY_LIST'
*       EXPORTING
*         FULLSCREEN                  =
*         CALLER_HANDLES_EVENTS       =
*         STARTING_X                  = 10
*         STARTING_Y                  = 10
*         ENDING_X                    = 60
*         ENDING_Y                    = 20
*       IMPORTING
*         USER_COMMAND                =
        TABLES
          listobject                  = gt_list
        EXCEPTIONS
          empty_list                  = 1
          OTHERS                      = 2.
      IF sy-subrc <> 0.
* MESSAGE ID SY-MSGID TYPE SY-MSGTY NUMBER SY-MSGNO
*         WITH SY-MSGV1 SY-MSGV2 SY-MSGV3 SY-MSGV4.
      ENDIF.
    ENDIF.
ENDDO.
<b>* Result: in the 2nd run of the report (via SUBMIT) we get
*         the same values for the static counter.</b>
END-OF-SELECTION.
Regards
Uwe

Class-data versus data and methods versus class-methods in OO ABAP

Hi
I was going thorugh following OO ABAP code.
CLASS vessel DEFINITION.
PUBLIC SECTION.
    METHODS: constructor,
             drive IMPORTING speed_up TYPE i,
             get_id RETURNING value(id) TYPE i.
    CLASS-METHODS: start,
                   objects,
                   inheritance,
                   interfaces,
                   events.
PROTECTED SECTION.
    DATA: speed TYPE i,
          max_speed TYPE i VALUE 100.
PRIVATE SECTION.
    CLASS-DATA object_count TYPE i.
    DATA id TYPE i.
ENDCLASS.
Whats is difference between methods and class-methods ?
What is the difference between data and class-data ?

Hi Rajesh,
There are two types of componenets in a class
1)Static components
2) Instance components
Instance components exist for every instance of the class, while static exist only once for any number of instances of the class.
Components of the class are methods, attributes, events etc.
static attributes are represented by CLASS-DATA and instance attributes are represented by DATA.
static methods hence are done by CLASS-METHODS and can access only static attributes.
Instance methods are done by METHODS and can access any attribute.
For eg: supposing that in a class, there is a static attribute. Suppose after one instance is created, we are setting this static attribute value as 10. Now we are creating another instance of the same class. Now when you try to display the value of this attribute, it will be 10.ie. it needs to be initialized once and can be shared between instances.
Just go through this document..You will get nice info from this.
http://esnips.com/doc/5c65b0dd-eddf-4512-8e32-ecd26735f0f2/prefinalppt.ppt
http://esnips.com/doc/2c76dc57-e74a-4539-a20e-29383317e804/OO-abap.pdf
If you want to go deeper, like object persistence and all, just refer this document.
http://esnips.com/doc/92be4457-1b6e-4061-92e5-8e4b3a6e3239/Object-Oriented-ABAP.ppt
Regards,
SP.

Calling a .m file from inside a mathscript node

hello all i am hoping someone can help me out, I am in the process of converting our version 7.11 matlab node vi's to mathscript (I hope) AND I HAVE RUN INTO AN ISSUE. we have a very simple matlab script that bundled the data and sent it to another matlab sub routine. when i copy this script over to mathscript I get the following eror: Unknown symbol on line 13: Pre_Process_Function_Pulse. Is there a way I can call and run these subroutines from the mathscript node? Do i need to convert the sub routines into a mathscript file? or do i just need to change the syntax for my call? bmp of the offending line in mathscript attached. please forgive if this is an easy question, I am not really a matlab programmer, the files that we are running are provided from elsewhere, and i get to integrate them any and all help is always appreciated thanks Chris
Attachments:
mathscript.JPG ‏51 KB

Hello again,
Ok I am still having issues running the matlab script in mathscript. I have gone back to the original scripts with all the nested sup routines. and the mathscript code is just a call to the first .m file subroutine. but for some reason mathscript will not recognize the function call as a call? I recreated the original matlab node in a sequence, so the matlab node runs (successfully) and then the next sequence is the identical call in mathscript. I have set the path in mathscript to the directory where all the .m files are located. The pre-process_function_pulse .m file sequentially calls 6 very small .m subroutine files. all are located in the same directory. and this directory is the only one listed under path and working directory in Mathscript preferences. Additionally from the last suggestions all traces of the original japanese comments have been deleted from all the .m files. The inputs and outputs are the same for the matlab and mathscript nodes. so i am basically at a loss here.
Any and all help will be greatly appreciated.
thank you
Chris
Attachments:
mathscript.doc ‏138 KB

Mathscript node access to class data

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