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Mar 19, 2012 at 04:57 PM

xSteps: how to add nodes through ABAP

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I need to add a xStep node in the tree of a process order. I'm trying to do it through the CMX_XS* classes' methods, but I'm stuck with the if_cmx_xs_root->edit method.

The problem is that method calls a CO_BT* function module that checks a in-memory internal table, where my order is NOT because I'm not changing the order through standard transactions. I think it must exist a way to say the system I'm changing that order, but I cannot find it.

Up to now, my code looks like:

DATA: myfac TYPE REF TO if_cmx_xs_factory,

mylib TYPE REF TO if_cmx_xs_library,

mychange TYPE REF TO if_cmx_xs_change_object,

myroot TYPE REF TO if_cmx_xs_root,

mynode TYPE REF TO if_cmx_xs_node,

mycopy TYPE REF TO if_cmx_xs_node,

myex TYPE REF TO cx_cmx_xs_exception,

myerr TYPE string,

t_children TYPE cmx_xs_t_node.

myfac = cl_cmx_xs_system=>get_factory( ).

mylib = cl_cmx_xs_system=>get_library( ).

* Well, it seems we need another child, not the first one đŸ¤ª

TRY.

IF mychange IS INITIAL.

mychange = myfac->create_change_object_nonhist( ).

ENDIF.

CALL METHOD mylib->get_root_by_nid

EXPORTING

nid = <child>-parent_oid

change_object = mychange

RECEIVING

root = myroot.

CATCH cx_cmx_xs_exception INTO myex.

myerr = myex->if_message~get_text( ).

ENDTRY.

IF myerr IS INITIAL.

TRY.

CALL METHOD myroot->get_children

RECEIVING

children = t_children.

CATCH cx_cmx_xs_exception INTO myex.

myerr = myex->if_message~get_text( ).

ENDTRY.

IF myerr IS INITIAL.

READ TABLE t_children INTO mynode INDEX 3.

IF sy-subrc = 0.

TRY.

CALL METHOD mynode->get_copy

RECEIVING

result = mycopy.

CATCH cx_cmx_xs_exception INTO myex.

myerr = myex->if_message~get_text( ).

ENDTRY.

IF myerr IS INITIAL.

TRY.

myroot->edit( ).

myroot->append_child( mycopy ).

CATCH cx_cmx_xs_exception INTO myex.

myerr = myex->if_message~get_text( ).

ENDTRY.

ENDIF.

ENDIF.

ENDIF.

ENDIF.

In the last TRY you can see the myroot->edit call, that triggers the excepcion message "Order xxxxx hass not been loaded."

I cannot get the message's information because it's not in the cx_cmx_xs_exception class (or I've not been able to find it yet).

Any hint would be appreciated. Thanks in advance,

Vic