Accessing Oracle8i Spatial Objects
Friends,
Could anyone suggest me any API so that I can access Spatial data using C++ API?
I mean, I am searching an alternative for SDE C API.
Bye,
Srikrishna
The SDO_UTIL package has lots of options to help output spatial data to other formats, and you may be able to use some of them to help.
Some that come to mind are:
SDO_UTIL.TO_WKTGEOMETRY
SDO_UTIL.TO_GMLGEOMETRY
SDO_UTIL.TO_KMLGEOMETRY
This is covered in chapter 32 of the Oracle® Spatial Developer's Guide 11g Release 2 (11.2).
Similar Messages
-
Accessing Oracle spatial objects (SDO_GEOMETRY) through ODBC/OLEDB
Hello.
I tried googling and reading through these forums and Oracle documentation, but I'm still uncertain on this question:
Are Oracle spatial objects (of type SDO_GEOMETRY) accessible through ODBC and/or OLE DB drivers? Can I retrieve them with SELECT clause? Can I write them to database?
I'm limited to these options because I'm developing Delphi application based on ADO and it must work with different DB servers. However I certainly don't want to implement different ways of accessing database for each server.
If geometry objects aren't suported by ODBC/OLEDB, is there any way to convert SDO_GEOMETRY to (and from) BLOB or string or whatever, so I can read and write them like a normal data field?
Thanks in advance.
Edited by: user13816863 on 25.01.2011 20:35
Edited by: user13816863 on 25.01.2011 21:57The SDO_UTIL package has lots of options to help output spatial data to other formats, and you may be able to use some of them to help.
Some that come to mind are:
SDO_UTIL.TO_WKTGEOMETRY
SDO_UTIL.TO_GMLGEOMETRY
SDO_UTIL.TO_KMLGEOMETRY
This is covered in chapter 32 of the Oracle® Spatial Developer's Guide 11g Release 2 (11.2). -
Accessing Oracle8i CORBA from C++ client
Did anybody successfully wrote C++ CORBA client that uses Oracle8i CORBA object? If so, some examples would be greatly appreciated.
According to documentation it is possible to access Oracle8i CORBA object from any CORBA client including C++, but it doesn't say how. Even "pure corba" java example that you can find on Oracle8i CD uses some proprietary "aurora" classes.
Please help.
Anatoliy Chikhalenko
[email protected]Thank u for taking care of me
But the hint given by u is not apt to my query.
If any new suggestion pls send again -
Oracle Spatial Object types in Designer 6
Hi all,
I'm trying to design a database that uses the new Oracle Spatial Object types (MDSYS.SDO_GEOMETRY) etc. I have been able to capture the object types from Oracle8i but when i try to save the design in the repository it fails. I am assuming that the version of Oracle Designer I am using does not support MDSYS.SDO_GEOMETRY. Is this correct and if so what version of Designer should I be using?
MartinHi Saso,
I'm sorry I don't have any help for you but maybe yo can answer a question for me relating to sdo_geometry. I'm trying to capture a database schema which contains tables with sdo_geometry columns & this fails because I don't have that object defined.
So how do I access the Oracle Object Types branch to define MDSYS.SDO_GEOMETRY? Is it in the object navigator or designer?
Thanks,
Jim Greetham -
Web-UI error message "Access via 'NULL' object reference not possible"
I need some help, I'm not a Basis person but I need to get this connection problem resolve.
This problem is in our DEV ICWeb system. After logging in to Web-UI, I got a error message "Access via 'NULL' object reference not possible". We have 3 clients (100, 220, & 310) in DEV and all 3 clients are giving me the same error message.
From the help.sap.com, I found this topic http://help.sap.com/saphelp_nwes70/helpdata/en/84/43f0d786304e19a652a8f80909a8ec/content.htm
but in the document it asked to go to SM59 to check the ESH_APPL_WS_TEMPLATEENGINE destination. But we don't have that destination setup in all our systems.
Here is the complete error message:
Error when processing your request
What has happened?
The URL http://crm-dev.staff.copa:8000/sap/bc/bsp/sap/crm_ui_frame/BSPWDApplication.do was not called due to an error.
Note
■The following error text was processed in the system CD1 : Access via 'NULL' object reference not possible.
■The error occurred on the application server CRM-DEV_CD1_00 and in the work process 0 .
■The termination type was: RABAX_STATE
■The ABAP call stack was:
Method: GET_DATA_LOSS_HANDLER of program CL_CRM_UI_CORE_APPL_CONTROLLERCP
Method: GET_DATA_LOSS_HANDLER of program CL_CRM_UI_CORE_APPL_CONTROLLERCP
Method: EH_TRIGGER_NAVIGATION of program CL_CRM_UI_CORE_APPL_CONTROLLERCP
Method: SET_WORKAREA_CONTENT of program CL_CRM_UI_CORE_APPL_CONTROLLERCP
Method: PROCESS_NAV_QUEUE of program CL_BSP_WD_VIEW_MANAGER========CP
Method: DO_INIT of program CL_CRM_UI_FRAME_APP_CONTROLLERCP
Method: DO_INIT of program CL_BSP_CTRL_ADAPTER===========CP
Method: GET_PAGE_CONTEXT_CURRENT of program CL_BSP_CONTEXT================CP
Method: ON_REQUEST_ENTER of program CL_BSP_RUNTIME================CP
Method: ON_REQUEST of program CL_BSP_RUNTIME================CP
What can I do?
■If the termination type was RABAX_STATE, then you can find more information on the cause of the termination in the system CD1 in transaction ST22.
■If the termination type was ABORT_MESSAGE_STATE, then you can find more information on the cause of the termination on the application server CRM-DEV_CD1_00 in transaction SM21.Hi Michael,
Refer to the link below and check the procedure.
http://help.sap.com/saphelp_nwes70/helpdata/en/84/43f0d786304e19a652a8f80909a8ec/content.htm
Regards,
Arjun -
Problem with Dynamically accessing EJB Class objects in WL 7.0 SP1
I am trying to build a component which has the ability to instantiate and execute
an known EJB method on the fly.
I have managed to build the component but when I try and execute it I get a ClassNotFoundException.
I know that the EJB I am trying to invoke is deployed and available on the server,
as I can see it in the console, I also seen to have been able to get the remote
interface of the object, my problem occurs when I try and access the class object
so I can perform a create on the object and then execute my method
The code I have written is below:
private Object getRemoteObject(Context pCtx, String pJNDIName, String pHomeBean)
throws Exception {
String homeCreate = "create";
Class []homeCreateParam = { };
Object []homeCreateParamValues = {};
try {
//This call seems to work and doesn't throw an exception
Object home = pCtx.lookup(pJNDIName);
//However this call throws a java.lang.ClassNotFoundException
Class homeBean = Class.forName(pHomeBean);
Method homeCreateMethod = homeBean.getMethod(homeCreate,homeCreateParam);
return homeCreateMethod.invoke(home, homeCreateParamValues);
} catch (NamingException ne) {
logStandardErrorMessage("The client was unable to lookup the EJBHome.
Please make sure ");
logStandardErrorMessage("that you have deployed the ejb with the JNDI
name "+pJNDIName+" on the WebLogic server ");
throw ne;
} catch (Exception e) {
logStandardErrorMessage(e.toString());
throw e;
Any advice would be really appreciated, I'm fast running out of ideas, I suspect
it has something to do with the class loader but I'm not sure how to resolve it
Regards
Jo CorlessHello Joanne,
Congratulations! I'm very happy that you've managed to fix your problem. It's
always essential to understand how to package applications when deploying on BEA
WebLogic. Usually, by throwing everything into an EAR file solves just about all
the class loader problems. :-) Let us know if you have any further problems that
we can assist you with.
Best regards,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
"Joanne Corless" <[email protected]> wrote:
>
>
I've fixed it!!!!!!!!
Thanks to everyone who gave me help!!!!
The class loader was the culprit which is what I suspected all along.
As soon
as I put the 2 jar files I was using into an EAR file the problem went
away!!!!!
Thanks again
Jo Corless
"Ryan LeCompte" <[email protected]> wrote:
Hello Joanne,
As Mr. Woollen mentioned, I also believe it's a problem with the class
loader.
You need to be careful how you arrange your EJBs, because WebLogic has
a specific
method in which it loads classes in an EAR, JAR, and WAR file(s). Please
refer
to http://dev2dev.bea.com/articles/musser.jsp for more information about
BEA WebLogic
class loading mechanisms and caveats. Also, try printing out the various
methods
that are available on the object that was returned to you via reflection.
For
example, use the getMethods() method, which returns an array of Method
objects
that you can subsequently cycle through and print out the various method
names.
This way you can discover if the class found/returned to you is indeed
the one
you intend to locate.
Hope this helps,
Ryan LeCompte
[email protected]
http://www.louisiana.edu/~rml7669
Rob Woollen <[email protected]> wrote:
I believe the issue is the home interface class for this EJB is not
available in the class loader which is doing the reflection.
If you do:
getClass().getClassLoader().loadClass(homeInterfaceClassName)
I suspect it will fail. Reflection still requires that the class be
loadable.
-- Rob
Joanne Corless wrote:
Hi Slava,
If I make my code look like you describe below I get a compliationerror telling
me that
home.getMethod() is not recognised (no such method)
If I change it slightly and use
Method homeCreateMethod =
home.getClass().getMethod(homeCreate,homeCreateParam);
The code will compile OK but when executed it still throws a NoSuchMethodException
Any ideas ?
Thanks for your help so far
Regards
Jo Corless
Your code should look like
Object home = pCtx.lookup(pJNDIName);
Method homeCreateMethod =
home.getMethod(homeCreate,homeCreateParam);
return homeCreateMethod.invoke(home, homeCreateParamValues);
Regards,
Slava Imeshev
"Joanne Corless" <[email protected]> wrote in message
news:[email protected]...
Hi Ryan,
I also wanted to mention that if you do a "header search" in this
particular
newsgroup
with the search query as "reflection", you will see many previousmessages
regarding
reflection and EJBs. I believe you could learn a lot from thedifficulties
that
others have faced and solved.I tried that and although there was a number of similar cases noneof them
actually
seem to fix my issue. Thanks for the suggestion though
Are the EJBs that you are trying to access accessible via your
system
classpath?
Try to avoid having them accessible via the main system classpath,and
only bundle
them in your appropriate EJB jar files (contained in an EAR file,for
example).Maybe I should have laid the problem out a little clearer.
I have a number of EJB's bundled up in a JAR file which is hot deployedto
the
server. Within this first JAR file is an EJB (SSB) component that
needs
to
be
able to invoke a known method on another EJB. This second EJB may
or
may
not be
within the first JAR file but it also will be hot deployed.
The component trying to invoke the method on the 2nd EJB has to
be
able to
create
an instance of the 2nd EJB without actually knowing anything bar
a
JNDI
Name which
is passed in at runtime.
I can get as far as doing the
Object home = pCtx.lookup(pJNDIName);
This returned a class with the name
"com.csc.edc.projects.allders.httppostoffice.postman.PostmanBean_mp8qy2_Home
Impl_WLStub"
My problem seems to occur when I try and invoke the create method
Method homeCreate = home.getClass().getMethod("create", new Class[0]);
My code throws a java.lang.NoSuchMethodException at this point so
I
am
unable
to progress to the next step of :
Object bean = homeCreate.invoke(home, null);
So I can return the instantiated bean back to the calling client.
Why am I getting the NoSuchMethodException, is is because I am gettinga
stub
back rather than the home interface and if so how do I get the truehome
interface
from the bean
Thanks in advance
Jo Corless -
Hi all ,
Im getting the below error , actually recently i created my own custom table zstudent, later i wrote select query to fetch data from the same and dump at internal table and then bind this to the table node.
But im getting below error, even i removed the select query still same error is occuring.
Error when processing your request
What has happened?
The URL http://********00.*****b.com:8000/sap/bc/webdynpro/sap/zdemo_student/ was not called due to an error.
Note
The following error text was processed in the system IDS : Access via 'NULL' object reference not possible.
The error occurred on the application server axsids00_IDS_00 and in the work process 0 .
The termination type was: RABAX_STATE
The ABAP call stack was:
Method: WDDOINIT of program /1BCWDY/YUSM2Q74A826Y0JY1I4V==CP
Method: IF_WDR_COMPONENT_DELEGATE~WD_DO_INIT of program /1BCWDY/YUSM2Q74A826Y0JY1I4V==CP
Method: DO_INIT of program CL_WDR_DELEGATING_COMPONENT===CP
Method: INIT_CONTROLLER of program CL_WDR_CONTROLLER=============CP
Method: INIT_CONTROLLER of program CL_WDR_COMPONENT==============CP
Method: INIT of program CL_WDR_CONTROLLER=============CP
Method: INIT of program CL_WDR_CLIENT_COMPONENT=======CP
Method: INIT of program CL_WDR_CLIENT_APPLICATION=====CP
Method: IF_WDR_RUNTIME~CREATE of program CL_WDR_MAIN_TASK==============CP
Method: HANDLE_REQUEST of program CL_WDR_CLIENT_ABSTRACT_HTTP===CPThanks Rama,
Acutally i accidentally commented the lo_nd_student = wd_context ....etc
this line was commented .
i have one small requirement to fetch data from local customised table and fill the same to internal table and bind that to table node.
my table node is student having attributes as name , city and number , all are of type strings.
now i created one custom table zstudent having ID - char of length 10,
name of type string
city of type string
num of type string
i have inserted records
but when i use select query to fill data from this zstudent to my internal table of type lt_student type wd_this->elements_student ,
im getting same above error. -
How can i access all the objects of one schema from another schema
Dear All,
How can i access all the objects(Tables,Views,Triggers,Procedures,Functions,Packages etc..) and do the modifications of one schema from another schema (Without using synonyms concept).
Thanks in advance,
MahiFirst of all, synonyms only help you easy reference the object. It doesn't have any implication of object privilege.
As long as you have proper privilege on target object. You can access it with or without synonyms.
Assuming you have proper privilege of objects, you can use following command to assume schema owner.
ALTER SESSION SET CURRENT_SCHEMA = Schema_owner -
Dump - Access using NULL object reference is not possible!!!
Hi,
I'm using the BCS class for sending HTM format email so i use the below code for that its working,
DATA: gr_document TYPE REF TO cl_document_bcs,
gr_document = cl_document_bcs=>create_document(
i_type = 'HTM'
i_text = t_html
i_importance = '5'
i_subject = gc_subject ).
Next task is to send the image so i'm creating an another object to the same class, below code
*Image from MIME
DATA: o_mr_api TYPE REF TO if_mr_api.
DATA is_folder TYPE boole_d.
DATA l_img1 TYPE xstring.
DATA l_img2 TYPE xstring.
DATA l_loio TYPE skwf_io.
DATA: lo_document TYPE REF TO cl_document_bcs.
IF o_mr_api IS INITIAL.
o_mr_api = cl_mime_repository_api=>if_mr_api~get_api( ).
ENDIF.
CALL METHOD o_mr_api->get
EXPORTING
i_url = '/SAP/PUBLIC/ZDEMO/tick.png'
IMPORTING
e_is_folder = is_folder
e_content = l_img1
e_loio = l_loio
EXCEPTIONS
parameter_missing = 1
error_occured = 2
not_found = 3
permission_failure = 4
OTHERS = 5.
CALL METHOD o_mr_api->get
EXPORTING
i_url = '/SAP/PUBLIC/ZDEMO/Delete.png'
IMPORTING
e_is_folder = is_folder
e_content = l_img2
e_loio = l_loio
EXCEPTIONS
parameter_missing = 1
error_occured = 2
not_found = 3
permission_failure = 4
OTHERS = 5.
*Convert XSTRING to ITAB
DATA :lt_hex1 TYPE solix_tab,
lt_hex2 TYPE solix_tab,
ls_hex LIKE LINE OF lt_hex1,
lv_img1_size TYPE sood-objlen,
lv_img2_size TYPE sood-objlen.
CLEAR : lt_hex1, lt_hex2, ls_hex, lv_img1_size, lv_img2_size.
WHILE l_img1 IS NOT INITIAL.
ls_hex-line = l_img1.
APPEND ls_hex TO lt_hex1.
SHIFT l_img1 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
WHILE l_img2 IS NOT INITIAL.
ls_hex-line = l_img2.
APPEND ls_hex TO lt_hex2.
SHIFT l_img2 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
*Findthe Size of the image
DESCRIBE TABLE lt_hex1 LINES lv_img1_size.
DESCRIBE TABLE lt_hex2 LINES lv_img2_size.
lv_img1_size = lv_img1_size * 255.
lv_img2_size = lv_img2_size * 255.
*Attach Images
clear: lo_document.
lo_document->add_attachment(
EXPORTING
i_attachment_type = 'png' " Document Class for Attachment
i_attachment_subject = 'img1' " Attachment Title
i_attachment_size = lv_img1_size " Size of Document Content
i_att_content_hex = lt_hex1 " Content (Binary)
lo_document->add_attachment(
EXPORTING
i_attachment_type = 'png' " Document Class for Attachment
i_attachment_subject = 'img2' " Attachment Title
i_attachment_size = lv_img2_size " Size of Document Content
i_att_content_hex = lt_hex2 " Content (Binary)
but it throws the dump " Access using NULL object reference is not possible" when i tries to access for method add_attachment...
Thanks,
SivaYes there is commit work after that, Below code
gr_document = cl_document_bcs=>create_document(
i_type = 'HTM'
i_text = t_html
i_importance = '5'
i_subject = gc_subject ).
*Image from MIME
DATA: o_mr_api TYPE REF TO if_mr_api.
DATA is_folder TYPE boole_d.
DATA l_img1 TYPE xstring.
DATA l_img2 TYPE xstring.
DATA l_loio TYPE skwf_io.
DATA: lo_document TYPE REF TO cl_document_bcs.
IF o_mr_api IS INITIAL.
o_mr_api = cl_mime_repository_api=>if_mr_api~get_api( ).
ENDIF.
CALL METHOD o_mr_api->get
EXPORTING
i_url = '/SAP/PUBLIC/ZDEMO/tick.png'
IMPORTING
e_is_folder = is_folder
e_content = l_img1
e_loio = l_loio
EXCEPTIONS
parameter_missing = 1
error_occured = 2
not_found = 3
permission_failure = 4
OTHERS = 5.
CALL METHOD o_mr_api->get
EXPORTING
i_url = '/SAP/PUBLIC/ZDEMO/Delete.png'
IMPORTING
e_is_folder = is_folder
e_content = l_img2
e_loio = l_loio
EXCEPTIONS
parameter_missing = 1
error_occured = 2
not_found = 3
permission_failure = 4
OTHERS = 5.
*Convert XSTRING to ITAB
DATA :lt_hex1 TYPE solix_tab,
lt_hex2 TYPE solix_tab,
ls_hex LIKE LINE OF lt_hex1,
lv_img1_size TYPE sood-objlen,
lv_img2_size TYPE sood-objlen.
CLEAR : lt_hex1, lt_hex2, ls_hex, lv_img1_size, lv_img2_size.
WHILE l_img1 IS NOT INITIAL.
ls_hex-line = l_img1.
APPEND ls_hex TO lt_hex1.
SHIFT l_img1 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
WHILE l_img2 IS NOT INITIAL.
ls_hex-line = l_img2.
APPEND ls_hex TO lt_hex2.
SHIFT l_img2 LEFT BY 255 PLACES IN BYTE MODE.
ENDWHILE.
*Findthe Size of the image
DESCRIBE TABLE lt_hex1 LINES lv_img1_size.
DESCRIBE TABLE lt_hex2 LINES lv_img2_size.
lv_img1_size = lv_img1_size * 255.
lv_img2_size = lv_img2_size * 255.
*Attach Images
create object lo_document type cl_document_bcs.
lo_document->add_attachment(
EXPORTING
i_attachment_type = 'png' " Document Class for Attachment
i_attachment_subject = 'img1' " Attachment Title
i_attachment_size = lv_img1_size " Size of Document Content
i_att_content_hex = lt_hex1 " Content (Binary)
lo_document->add_attachment(
EXPORTING
i_attachment_type = 'png' " Document Class for Attachment
i_attachment_subject = 'img2' " Attachment Title
i_attachment_size = lv_img2_size " Size of Document Content
i_att_content_hex = lt_hex2 " Content (Binary)
"Add document to send request
CALL METHOD gr_send_request->set_document( gr_document ).
TRY.
CALL METHOD gr_send_request->SET_SEND_IMMEDIATELY
EXPORTING
I_SEND_IMMEDIATELY = 'X'.
* CATCH CX_SEND_REQ_BCS INTO BCS_EXCEPTION .
**Catch exception here
ENDTRY.
DATA: LO_SENDER TYPE REF TO IF_SENDER_BCS VALUE IS INITIAL.
TRY.
LO_SENDER = CL_SAPUSER_BCS=>CREATE( SY-UNAME ). "sender is the logged in user
* Set sender to send request
gr_send_request->SET_SENDER(
EXPORTING
I_SENDER = LO_SENDER ).
* CATCH CX_ADDRESS_BCS.
****Catch exception here
ENDTRY.
"Send email
CALL METHOD gr_send_request->send(
EXPORTING
i_with_error_screen = 'X'
RECEIVING
result = gv_sent_to_all ).
IF gv_sent_to_all = 'X'.
WRITE 'Email sent!'.
ENDIF.
"Commit to send email
COMMIT WORK.
"Exception handling
CATCH cx_bcs INTO gr_bcs_exception.
WRITE:
'Error!',
'Error type:',
gr_bcs_exception->error_type.
ENDTRY. -
Hi Guru's,
i am new for WebDynpro programming.I am trying to use select-options tutorial.
System showing select options and table binding on screen when i test the application.
I have using search button to get the value which user will i/p.for that onaction method created, i have writen the code to get the values which user will input.
Method given below is of componentcontroler
method wddoinit .
data: lt_range_table type ref to data,
rt_range_table type ref to data,
read_only type abap_bool,
lt_range_table1 type ref to data.
data: lr_componentcontroller type ref to ig_componentcontroller,
l_ref_cmp_usage type ref to if_wd_component_usage.
create the used component
l_ref_cmp_usage = wd_this->wd_cpuse_select_options( ).
if l_ref_cmp_usage->has_active_component( ) is initial.
l_ref_cmp_usage->create_component( ).
endif.
wd_this->m_wd_select_options = wd_this->wd_cpifc_select_options( ).
wd_this->m_handler = wd_this->m_wd_select_options->init_selection_screen( ).
wd_this->m_handler->set_global_options(
i_display_btn_cancel = abap_false
i_display_btn_check = abap_false
i_display_btn_reset = abap_false
i_display_btn_execute = abap_false ).
lt_range_table = wd_this->m_handler->create_range_table( i_typename = 'S_CARR_ID' ).
wd_this->m_handler->add_selection_field( i_id = 'CARRID'
it_result = lt_range_table i_read_only = read_only ).
call method wd_this->m_handler->add_horizontal_divider
exporting
i_id = 'LINE'.
endmethod.
Method given below is of VIEW.
method ONACTIONSEARCH .
DATA: NODE_FLIGHTS TYPE REF TO IF_WD_CONTEXT_NODE.
DATA: RT_CARRID TYPE REF TO DATA.
DATA: ISFLIGHT TYPE TABLE OF SFLIGHT.
DATA: WSFLIGHT TYPE SFLIGHT.
FIELD-SYMBOLS: <FS_CARRID> TYPE TABLE.
Retrieve the data from the select option
RT_CARRID = WD_THIS->M_HANDLER->GET_RANGE_TABLE_OF_SEL_FIELD( I_ID = 'S_CARR_ID' ).
Assign it to a field symbol
ASSIGN RT_CARRID->* TO <FS_CARRID>.
CLEAR ISFLIGHT. REFRESH ISFLIGHT.
SELECT * INTO CORRESPONDING FIELDS OF TABLE ISFLIGHT FROM SFLIGHT
WHERE CARRID IN <FS_CARRID>.
NODE_FLIGHTS = WD_CONTEXT->GET_CHILD_NODE( NAME = `FLIGHTS` ).
NODE_FLIGHTS->BIND_ELEMENTS( ISFLIGHT ).
endmethod.
while executing appln. error is trigger on line given below
RT_CARRID = WD_THIS->M_HANDLER->GET_RANGE_TABLE_OF_SEL_FIELD( I_ID = 'S_CARR_ID' ).
Err: The following error text was processed in the system BCD : Access via 'NULL' object reference not possible.
please help me out on this issue.
Thanks and Regards
Vinayak Sapkalhi ,
The attribute M_HANDLER is an attirbute of component controller (as told by your post) and so you cannot access it as you have done it.
You will have to access it as .
WD_COMP_CONTROLLER->M_HANDLER->GET_RANGE_TABLE_OF_SEL_FIELD(I_ID = 'S_CARR_ID' ).
Try doing it.
Or else , if you have created a similar attribute in your view itself , then it is "INITIAL" and hence you are getting the dump.
You will have to assign the view attribute "M_HANDLER" with the value of your component controller attribute "M_HANDLER" ,because all the initializations are done in WDDOINIT of comp controller and on component controller atribute "M_HANDLER".
Thanks,
aditya. -
I have a requirement where I have to give the list of users who can access a specific computer define in AD.
I am new with PS.
Do you have a script to list users that can access a computer object of AD ?
I have executed the following script but it does not give me the access rights of who can access the computer 'computername'
How can i have this information. please help
Import-Module activedirectory
$computer=get-adcomputer "computername" -properties ntSecurityDescriptor
$omputer.ntsecurityDescriptor.Access | select-object -expandproperty IdentityReference | sort-object -uniqueI would say that, since the OP has so little info, there are no policies in use. It there were then this question would never be asked the way it is being asked.
I had a client call with a letter from their insurance company; an accountant with malpractice insurance. THey asked the same question inmuch the same way. "What computer can you users access?" The question should be more like
"Do you have a policy that restricts access to computers and do you audit for compliance?"
I have had other clients whose insurance asked the question in that way. It produces a better view of what should be happening and how to show compliance.
I recommend that companies being asked these questions by their legal departments or insurance companies should contract with a god computer security consultant to assist with answering these very tricky questions. Of course if it is just you boss's
curiosity then you may need to discuss his requirements with him in more depth.
¯\_(ツ)_/¯ -
Access vis NULL object reference.
Hi experts,
I have a component having context->node1->usernr
usernr is one of the attributes in node1.
node1 has cardinality 0..n
I have two views, view1 and view2 in the window.
both the view contexts have mapping with node1 of component controller context.
View1 has a table that shows usernr as a column and view2 has an inputfield, the value of which is bound to usernr.
On clicking a button in view1, I am creating an element of node1 and binding it to the node. this os working fine. Also I am firing the outplug of view1 which is connected to inplug of view2.
I debugged the view2 and it is going upto the HANDLEIN_view2_inputplug
Then I just get this dump "Access via 'NULL' object reference not possible."
Error in the ABAP Application Program
The current ABAP program "CL_WDR_VIEW_ELEMENT_ADAPTER===CP" had to be terminated because it has come across a statement that unfortunately cannot be executed.
Error analysis
You attempted to use a 'NULL' object reference (points to 'nothing') access a component (variable: " ").
An object reference must point to an object (an instance of a class) before it can be used to access components.
Either the reference was never set or it was set to 'NULL' using the CLEAR statement.
Information on where terminated
Termination occurred in the ABAP program "CL_WDR_VIEW_ELEMENT_ADAPTER===CP" - in "GET_ATTRIBUTE_EXTERNAL".
The main program was "SAPMHTTP ".
In the source code you have the termination point in line 10 of the (Include) program "CL_WDR_VIEW_ELEMENT_ADAPTER===CM00Q".
Source Code Extract
Line SourceCde
1 method get_attribute_external.
2
3 data data_container type ref to cl_wdr_data_container.
4 data attribute type wdr_attribute_pointer.
5 data client_component type ref to cl_wdr_client_component.
6
7 attribute-attribute_name = i_binding->attribute_name.
8 attribute-element ?= get_bound_element( i_binding ).
9 client_component ?= attribute-element->node->controller->component->data_container_superio
11 data_container = client_component->data_container.
12
13 e_value = data_container->get_and_format( attribute = attribute ).
14
15 endmethod.
Error is at line 9
Chosen variables
Name
Val.
No. 21 Ty. METHOD
Name CL_WDR_VIEW_ELEMENT_ADAPTER=>GET_ATTRIBUTE_EXTERNAL
I_BINDING
0000000C
D0000002
E_VALUE
SY-REPID
CL_WDR_VIEW_ELEMENT_ADAPTER===CP
0000000000000000000000000000000000000000
0000000000000000000000000000000000000000
4455455544554444445544455453334522222222
3CF742F6957F5C5D5E4F1410452DDD3000000000
%_DUMMY$$
0000
0000
2222
0000
ATTRIBUTE-ATTRIBUTE_NAME
USERNR
000000
000000
554545
5352E2
I_BINDING->ATTRIBUTE_NAME
USERNR
000000
=======================================================================
The thing that is worrying me is that nothing like this was happening at all earlier. I tested the application quite a few number of times and then suddenly this started. Since then it has not stopped.
I am unable to understand the reason for this. Pl help.
Regards,
Reema.
Edited by: Reema Shahbazkar on Jun 12, 2008 3:28 AMHey Reema,
Were you able to resolve this error. I am facing exactly the same issue currently . My primary data container nodes belong to the component controller. I did verify the same for any change in the cardinality and dont see anythign thats changed which could be impacting my views. In any case, I had kept the cardinality as 0...n initially to be safe since there cud be scenarios where no values can exist for the same at runtime.
Please do let me know how you happened to resolve this.
Thanks,
Puja. -
Runtime error in WebDynpro - Access via 'NULL' object reference not possibl
Hi,
Structure of the CONTEXT in the VIEW::
WDSCREEN1
--> IMPORTING
--> S_KUNNR <- its a select option
--> EXPORTING
--> T_REPORT <- Which is table to hold the output data (with 4 fields)
In the context area i have root node (WDSCREEN1) and Sub nodes are IMPORTING and EXPORTING and child nodes as shown above. When i am referring them everything is fine except T_REPORT.
* Declaration
DATA: node TYPE REF TO if_wd_context_node,
node_exporting TYPE REF TO if_wd_context_node,
node_importing TYPE REF TO if_wd_context_node,
node_report TYPE REF TO if_wd_context_node,
node = wd_context->get_child_node( wd_this->wdctx_wdscreeb1 ).
node_exporting = node->get_child_node( wd_this->wdctx_exporting ).
node_importing = node->get_child_node( wd_this->wdctx_importing ).
* Bind the data to the context
node_report = node_exporting->get_child_node( name = 'T_REPORT` ).
node_report->bind_elements( lt_report ).
Its giving run time error 'Access via 'NULL' object reference not possible. ' when it comes to ' node_report->bind_elements( lt_report ).' I checked the content while debugging and found that it was initial. Not sure why Node_report is initial. all others have data.
node ->
node_exporting ->
node_importing ->
node_report ->http://wiki.sdn.sap.com/wiki/display/EP/PointersforTroubleshootingPortalRuntime+Errors
Hope this helps.
-Veer -
Imlementing synchronized access to shared objects in LabVIEW OOP
Many objects in object-oriented programming have an
identity, such as a file, a front-panel object or a hardware device.
These objects cannot be modelled using present LabVOOP (LabVIEW Object Oriented Programming) objects as
LabVOOP objects gets copied as wire is branched; multiple different
wires cannot all represent a single object. This issue has been
irritating the community of LabVIEW users since the release of LabVOOP
a few months ago.
It seems that there is a huge demand for
objects with unique identity i.e. by-reference objects in LabVIEW. The
central problem why LabVOOP propably doen't have these objects is the
difficulty in implementing synchronized access to these objects from
multiple parallel threads. The problem of synchronized access can be
divided into two different separate topics. First how the
sychronization should be implemented in LabVIEW runtime engine. Second
how this synchronization mechanism should be visible to the developer.
I'd like to start this thread to discuss these two issues.
Synhronization under the hood
Traditionally
people talk about locking of an object and about get-modify-set pass
when accessing the object. Locking is traditionally done by acquiring a
mutex for an object, modifying the object and releasing the mutex so
that other threads can access the same object instance. This is how
inter-thread synchronization is traditionally done. However, besides
the mutex based locking, the computer science community has innovated
also different kinds of methods on synchronizing the access to objects.
One way to get object-level synchronization is modify the
runtime engine so that it only allows a single method of a synchronized
object to run at any time. This mechanism of syncrhonization is
implemented in programming languages like O'Haskell, which is a Haskell
variant with object orirented features.
Also different
transactional mechanisms[1,2] have been successful. In transactional
mechanisms multiple threads are allowed to access a synchronized object
simultaneously. As each method accessing an object commits their
changes, they verify that no other object has modified the object
simultaneously in a manner than would break the transaction. If such a
modification has occurred, everything is rolled back. Transactional
mechanism do not suit to every possible situation as not everything can
be rolled back. For example it's hard to roll back an action that
somehow modifies the physical world.
User experience of synchronization
How
the synchronization is generally implemented in LabVIEW shouldn't be
directly visible to the developer end-user. The developer should
understand the general concepts of synchronization to take full
advantage of it, but in general the synhronization mechanism should be
integrated directly to development environment. There should in general
be no need to acquire a mutex by calling acquire mutex node but instead
the end-user should be able to specify which data needs synhronized
access in more sophisticated way.
In the following I propose a
mechanism of integrating the synchronized access of by-ref objects to
the development environemnt of LabVIEW. The proposal is very
preliminary but I hope it breaks the ice and the community would start
innovating in how should NI implement the syncrhonization support in
the user interface of LabVIEW.
Wire level synchronization
Only
methods can access object private data members. In synchronized access
to the object, it's the methods accessing the private data members that
need to be synchronized. The private data members are accessed by
applying unbundle node to the class wire and data is written back to
the object using bundle node.
What I propose is the following.
An unbundle node could either be normal or "synchronized". A
synchronized unbundle would guarantee the access to the private data
members in synchronized manner. All data wires originating from
synchronized unbundle would be of synchronized type, in a little
similar manner as a dynamic dispatch wire is of special dynamic
dispatch type. Such a wire must evetually be connected to a bundle
node. When the wire is bundled back to the originating object, the
synchronization requirement is released.
These synchronized
wires would look somewhat different from normal wires so that the
developer instantly knows that the wire is synchronized. The developer
can branch the wire, but only one wire branch can own the synchronized
type. The developer could easily select which wire would be
syncrhonized by Ctrl+clicking the wire. Such a wire can be considered
as a combination of a data and a mutex, even though mutexes don't need
to be the underlying synchronization method. The wire just guarantees
that there is a mechanism in the runtime engine that makes sure the
access to the wire data is synchronized.
There is a need to wire
data originating from a non-synchronized wire to a synchronized wire so
that it can replace the private data member of the class. This is
accomplished with a new node similar to bundle node, that would allow
replacing the data in a syncrhonized wire with some data originating
from a non-synchronized wire.
The synchronized wire can be
connected to a front panel controls of special syncrhonized type. This
way the synchronized wire can originate from a method and allow passing
the synchronized data to the calling VI and back to another method.
This is practical for example in a situation when the developer wants
to run different analyzes to a data class but don't want to rewrite all
the existing data analysis tools as class members. So the developers
writes a syncrhonization acquiring getData method that let's the
calling VI to access the syncrhonized data. Then the developer passes
this data to an analysis VI and passes the result back to a setData
method that writes the result back to the class wire.
There
will probably be technical problems in allowing the user to connect
such a synchronized wire to all existing VIs since these VIs. Therefore
the programming model for all nodes that do not support such
synchronized wires will be branching the wire and passing the
non-synchronized wire branch to the node and then bundling the result
back to the synchronized wire.
To increase performance and
decrease unnecessary buffer copies when a syncrhonized wire is
branched, if the syncrhonized wire continues directly to the new bundle
synchronized wire node, no buffer copy is made.
Discussion
The
syncrhonized access to a by-ref LabVOOP objects can be implemented in
multiple ways by National Instruments. The synchronized access should
be divided to two different and independent parts: 1) the user
experience of synchronization and 2) the runtime engine synchronization
mechanisms. As LabVOOP objects have special properties compared to
other LabVIEW data types, optimal user experience can be gained by
designing the user experience specifically for LabVOOP objects. From
user experience point-of-view this syncrhonization mechanism may not
work for other data types. Separating object syncrhonization from
synchronization of other data types is advantageous also for other
reasons. Due to the fact that object data can only be accessed via
object methods, more advanced synchronization methods may be used with
objects than can be used with other data types. O'Haskell
synchronization implementation is an example of this. Integrating the
synchronization directly to the user interface allows NI to change the
mehcanisms under the hood, when computer science comes up with more
advanced methods. Therefore NI could begin with traditional and quite
easy mutex-based synchronization and later move to more advanced
perhaps transaction based syncrhonization methods or even combinations
of multiple different methods.
I hope this topic generates
discussion that would help NI to implement an excellent synchronization
mechanism in LabVOOP. I hope that all talented individuals in the
community participate this discussion to help NI to reach this goal. I
also hope that if you just have time, it would be great if you could
surf the computer science resources to find out what kinds of new
techniques there exists for synchronizing access to shared resources. A
Large community may find much more innovative solutions than a few engineers at NI. Let's give NI the power of open source design
Tomi MailaHello Tomi,
First, thank you for taking the time to write such a well
though-out suggestion. Are you familiar
with the “LabVIEW Object-Oriented Programming: The Decisions Behind the Design”
document? I think the reason we chose to implement a ‘by
value’ strategy, is that is more in line with the LabVIEW programming paradigm
of dataflow, and would make sense to most of our LabVIEW users.
I think your suggestion is interesting, and it does
highlight the need to think outside of the conventional LabVIEW box and look to
some of the innovative things other languages do. However, I think we all agree that
synchronization takes careful planning and extra work for the programmer. Even with an ‘ideal’ solution I see no way
around this. For LabVIEW users today,
one great way to get synchronized ‘by reference’ semantics with your objects is
to use a single-element queue to pass your object. The queue itself is passed ‘by reference’ and
is inherently synchronized! The does
have the disadvantage of adding one more small layer of complexity to your
program, but some complexity would have to be introduced in any situation. The other disadvantage with this is that it
is not always an intuitive way to implement your program and requires some
amount of LabVIEW knowledge before one would generally come across this
technique.
In any case, I appreciate the time and effort you put in to
your suggestion. Please make sure that
you submit the suggestion formally through the NI Product Suggestion Center so
that it can be reviewed by some of the decision makers here.
Thanks again,
Travis M
LabVIEW R&D
National Instruments -
ORA-13050:unable to construct spatial object in using SDO_INTERSECTION
Hi Specialists,
I am using Oracle Spatial and getting the ORA-13050 error when using the SDO_Intersection procedure. Below are the details of this.
Objective: To find the addresses whose boundary lie within a user defined polygon.
Input: List of coordinates for the user defined poygon.
Query I am using: SELECT SDO_GEOM.SDO_INTERSECTION (add.boundary, SDO_GEOMETRY(2003,8311,NULL, SDO_ELEM_INFO_ARRAY(1,1003,1),
SDO_ORDINATE_ARRAY( 149.986507,-36.727242,149.985898,-36.726819,149.986756,-36.726512,149.987288,-36.726803,149.986507,-36.727242)), 0.000001)
FROM address add
WHERE add.id = '254378298'
Error Received:
ORA-13050: unable to construct spatial object
ORA-06512: at "MDSYS.SDO_3GL", line 715
ORA-06512: at "MDSYS.SDO_3GL", line 745
ORA-06512: at "MDSYS.SDO_GEOM", line 3016
ORA-06512: at "MDSYS.SDO_GEOM", line 3065
Please can any one help me in this issue very urgent.
Thanks,
AshishHi All,
The problem has been resolved by transforming the user defined polygon coordinates into the database specific coordinate system.
Thanks
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