Abap custom class dump flight tables

Helo experts,
I created a class to select data from scustom, spfli, sflight and sbook into txt files for each table. But mt code only works with the scustom table. I tried to execute for all tables, for each table, but always occurs the same dump - except for scustom.
Please, help me.
*& Report ZCL01                                                       *
REPORT zcl01                                   .
*----- Class itab definition
CLASS itab DEFINITION.
PUBLIC SECTION.
*----- Methods
    METHODS: read_tab IMPORTING itab TYPE table,
             write_tab,
             txt_data IMPORTING patch TYPE string.
PRIVATE SECTION.
    TYPES: BEGIN OF st,
             field TYPE string,
           END OF st.
    DATA: struct TYPE TABLE OF st,
           linha LIKE LINE OF struct.
ENDCLASS.                    "itab DEFINITION
*----- Class itab implementation
CLASS itab IMPLEMENTATION.
*----- method txt data
METHOD txt_data.
    CALL FUNCTION 'GUI_DOWNLOAD'
      EXPORTING
        filename = patch
      TABLES
        data_tab = struct.
ENDMETHOD.                    "itab
*----- method read itab
METHOD read_tab.
    FIELD-SYMBOLS: <it> TYPE table,
                   <wa> TYPE ANY.
    ASSIGN itab TO <it>.
    REFRESH struct.
    LOOP AT <it> ASSIGNING <wa>.
      CLEAR linha.
      linha-field = <wa>.
      APPEND linha TO struct.
    ENDLOOP.
ENDMETHOD.                    "itab
*----- method write itab
METHOD write_tab.
    ULINE.
    LOOP AT struct INTO linha.
      WRITE: / linha-field.
    ENDLOOP.
    ULINE.
ENDMETHOD.                    "itab
ENDCLASS.                    "itab IMPLEMENTATION
START-OF-SELECTION.
DATA: it TYPE REF TO itab,
        ti_scustom TYPE STANDARD TABLE OF scustom,
        ti_spfli   TYPE STANDARD TABLE OF spfli,
        ti_sflight TYPE STANDARD TABLE OF sflight,
        ti_sbook   TYPE STANDARD TABLE OF sbook.
SELECT * FROM scustom INTO TABLE ti_scustom.
PERFORM gera_txt USING 'c:\sap\ti_scustom.txt' ti_scustom.
SELECT * FROM spfli   INTO TABLE ti_spfli.
PERFORM gera_txt USING 'c:\sap\ti_spfli.txt' ti_spfli.
SELECT * FROM sflight INTO TABLE ti_sflight.
PERFORM gera_txt USING 'c:\sap\ti_sflight.txt' ti_sflight.
SELECT * FROM sbook   INTO TABLE ti_sbook.
PERFORM gera_txt USING 'c:\sap\ti_sbook.txt' ti_sbook.
END-OF-SELECTION.
FORM gera_txt
--> P_ARQUIVO
--> P_TABLE
FORM gera_txt USING p_arquivo
                    p_table.
IF sy-subrc EQ 0.
    IF it IS INITIAL.
      CREATE OBJECT it.
    ENDIF.
    CALL METHOD it->read_tab( p_table ).
    CALL METHOD it->write_tab.
    CALL METHOD it->txt_data( p_arquivo ).
ENDIF.
FREE it.
ENDFORM.                    "gera_txt

Thanks to the answers, the dum msg is:
Runtime errors         UC_OBJECTS_NOT_CONVERTIBLE
       Occurred on     25.06.2007 at 16:06:50
Data objects in a Unicode program are not convertible.
What happened?
Error in ABAP application program.
The current ABAP program "!CL01 " had to be terminated because one of the
statements could not be executed.
This is probably due to an error in the ABAP program.
What can you do?
Print out the error message (using the "Print" function)
and make a note of the actions and input that caused the
error.
To resolve the problem, contact your SAP system administrator.
You can use transaction ST22 (ABAP Dump Analysis) to view and administer
termination messages, especially those beyond their normal deletion
date.
Transaction ST22 allows you to display and manage short dumps. It
is especially useful if you want to keep a particular message.
Error analysis
The statement
"MOVE src TO dst"
requires the operands "dst" and "src" to be comvertible.
Since this statement occurs in a Unicode program, the special
convertibility rules for Unicode programs apply. In this case, the
following rules have been broken:
How to correct the error
Make sure the operands "dst" and "src" are comparable in the statement
"MOVE src TO dst".
Probably the only way to eliminate the error is to correct the program.
You may able to find an interim solution to the problem
in the SAP note system. If you have access to the note system yourself,
use the following search criteria:
"UC_OBJECTS_NOT_CONVERTIBLE" C
"!CL01 " or "!CL01 "
"READ_TAB"
If you cannot solve the problem yourself, please send the
following documents to SAP:
1. A hard copy print describing the problem.
   To obtain this, select the "Print" function on the current screen.
2. A suitable hardcopy prinout of the system log.
   To obtain this, call the system log with Transaction SM21
   and select the "Print" function to print out the relevant
   part.
3. If the programs are your own programs or modified SAP programs,
   supply the source code.
   To do this, you can either use the "PRINT" command in the editor or
   print the programs using the report RSINCL00.
4. Details regarding the conditions under which the error occurred
   or which actions and input led to the error.
System environment
SAP Release.............. "610"
Application server....... "GTCDES13"
Network address.......... "169.254.25.129"
Operating system......... "Windows NT"
Release.................. "5.1"
Hardware type............ "2x Intel 801586"
Database server.......... "GTCDES13"
Database type............ "ADABAS D"
Database name............ "WA1"
Database owner........... "SAPR3"
Thanks Rich, your code works so fine!
Message was edited by:
        Rodrigo Paisante

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REPORT zblog_abap_proxy.
DATA prxy TYPE REF TO zblogco_proxy_interface_ob.
CREATE OBJECT prxy.
DATA it TYPE zblogemp_profile_msg.
TRY.
it-emp_profile_msg-emp_name = 'Sarvesh'.
it-emp_profile_msg-empno = '01212'.
it-emp_profile_msg-DEPARTMENT_NAME = 'NetWeaver'.
CALL METHOD prxy->execute_asynchronous
EXPORTING
output = it.
commit work.
CATCH cx_ai_system_fault .
DATA fault TYPE REF TO cx_ai_system_fault .
CREATE OBJECT fault.
WRITE :/ fault->errortext.
ENDTRY.
Receiver adapter configurations should be done in the integration directory and the necessary sender/receiver binding should be appropriately configured. We need not do any sender adapter configurations as we are using proxies.
5. To receive data into R/3 system we use INBOUND PROXY. In this case data is picked up by XI and send it to R/3 system via XI adapter into proxy class. Inside the inbound proxy we careate an internal table to take the data from XI and then simply by using the ABAP code we update the data inot R/3 table. BAPI can also be used inside the proxy to update the data into r/3.
I hope this will clear few doubts in proxy.
Just go through these links:
http://help.sap.com/saphelp_nw04/helpdata/en/14/555f3c482a7331e10000000a114084/frameset.htm
ABAP Server Proxies By Siva Maranani
/people/siva.maranani/blog/2005/04/03/abap-server-proxies
/people/sravya.talanki2/blog/2006/07/28/smarter-approach-for-coding-abap-proxies
/people/vijaya.kumari2/blog/2006/01/26/how-do-you-activate-abap-proxies
/people/ravikumar.allampallam/blog/2005/03/14/abap-proxies-in-xiclient-proxy
File to R/3 via ABAP Proxy with good example
/people/prateek.shah/blog/2005/06/14/file-to-r3-via-abap-proxy
http://help.sap.com/saphelp_nw2004s/helpdata/en/48/d5a1fe5f317a4e8e35801ed2c88246/frameset.htm
Generating java proxies..
/people/prasad.ulagappan2/blog/2005/06/27/asynchronous-inbound-java-proxy
/people/rashmi.ramalingam2/blog/2005/06/25/an-illustration-of-java-server-proxy
Synchronous Proxies:
Outbound Synchronous Proxy
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/profile/abap%2bproxy%2boutbound%2bprogram%2b-%2bpurchase%2border%2bsend
Inbound Synchronous Proxy
https://www.sdn.sap.com/irj/sdn/wiki?path=/display/profile/abap%2bproxy%2binbound%2bprogram%2b-%2bsales%2border%2bcreation
Regards,
Sarvesh

ABAP OO Class and Change Documents

I have created a class based on the IF_WORKFLOW interface. I created a couple of events. I created a workflow task assigned to a custom method of the class. I setup the Material Change Document to trigger the class event when there is a change. The workflow task does trigger when I change a material, but I don't know how to pass the key of the Change Document (matnr) to the workflow task/method using the ABAP OO Class interface. Any help?
Thanks,
Kenneth

Thanks for the reply Florin. Yes, I have seen Joclyn Dart's Whitepaper and blogs. They are very helpful, but I haven't seen much information within them about Change Documents. I tried your suggestions, but the material key is still not being filled when I trigger the change document and workflow task using tcode MM02.
Here is what I have done:
Created an Attribute 'Material' type mara-matnr and checked 'Key Attribute'.
Created an Attribute M_POR type SIBFLPOR.
Here are the methods:
Constructor with parameter 'Material' *
METHOD constructor.
me->m_por-catid = 'CL'.
me->m_por-typeid = 'ZMM_WF_MATTEC'.
me->m_por-instid = me->material.
ENDMETHOD.
Find_by_lpor with parameters LPOR and RESULT (default params) *
METHOD bi_persistent~find_by_lpor.
DATA: p_material TYPE matnr.
MOVE lpor-instid TO p_material.
TRY.
      CREATE OBJECT result
        TYPE
          zmm_wf_mattec
        EXPORTING
          material      = p_material.
    CATCH cx_bo_error .
      EXIT.
ENDTRY.
LPOR with parameter RESULT (default param) *
method BI_PERSISTENT~LPOR.
result = me->m_por.
endmethod.
ENDMETHOD.
Custom method MAT_CHANGED with parameter 'Material' * (not coded yet)
This is the task being triggered by the Change Documents *
METHOD mat_changed.
ENDMETHOD.
Edited by: Kenneth Moore on Nov 4, 2008 11:00 AM

How to indicate a message by a planning function type in an ABAP-OO-Class

Hello,
I integrated a message with following statement " MESSAGE i003(upf1) WITH v1 v2." in an ABAP-OO-Class, which is used by a Planning Function Type. The function type works but it´s not indecated after executing the Planning Sequence, neither from web template nor in the planning modeller.
Does anybody know this problem/behavior?
Thank for response
Andreas

Hi Joerg,
how about this:
data: l_dummy type char100.
MESSAGE i003(upf1) WITH v1 v2 into l_dummy.
i_r_msg->add_msg( ).
You do not need to take special care about the variables. Just raise the message as you want it to be raised. The only thing you need to do is to raise the message into a string (..into l_dummy). The interface IF_RSPLFA_MSG and the implemetation of add_msg is going to read the standard message variables (SY-MSGNO, SY-MSGID, SY-MSGTY, MSGV1 ...). You just need to throw the message
and call i_r_msg->add_msg( ) e.g. in the execute method of your customer planning function.
Please give it a try and take a look at it in the debugger.
Hope this helps.
Matthias Nutt
SAP Consulting Switzerland

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