Build SAP ALV tree Hierarchy
The following ABAP code and information shows you how to build the tree hierarchy for the example ALV tree report. Simply follow the below instructions and copy and paste the ABAP code into the appropriate includes(PBO and FORM include).
* Add following code to 'STATUS_0100'(PBO module)
*-----------------------------------------------*
* Create ALVtree Hierarchy
PERFORM create_alvtree_hierarchy.
* Add following code to 'Z......F01' INCLUDE
*--------------------------------------------------*
*&-------------------------------------------------------------*
*& Form CREATE_ALVTREE_HIERARCHY
*&-------------------------------------------------------------*
* text
*--------------------------------------------------------------*
* Builds ALV tree display, (inserts nodes, subnodes etc)
*--------------------------------------------------------------*
form create_alvtree_hierarchy.
data: ls_sflight type sflight,
lt_sflight type sflight occurs 0.
data: ld_ebeln_key type lvc_nkey,
ld_ebelp_key type lvc_nkey.
loop at it_ekko into wa_ekko.
perform add_ekko_node using wa_ekko
''
changing ld_ebeln_key.
loop at it_ekpo into wa_ekpo where ebeln eq wa_ekko-ebeln.
perform add_ekpo_line using wa_ekpo
ld_ebeln_key
changing ld_ebelp_key.
endloop.
endloop.
* calculate totals
call method gd_tree->update_calculations.
* this method must be called to send the data to the frontend
call method gd_tree->frontend_update.
endform. " CREATE_ALVTREE_HIERARCHY
*&---------------------------------------------------------------------*
*& Form ADD_EKKO_NODE
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* -->P_WA_EKPO text
* -->P_0553 text
* <--P_EBELN_KEY text
*----------------------------------------------------------------------*
form add_ekko_node using ps_ekko like wa_ekko
value(p_relate_key)
changing p_node_key.
data: ld_node_text type lvc_value,
ls_sflight type sflight.
* Set item-layout
data: lt_item_layout type lvc_t_layi,
ls_item_layout type lvc_s_layi.
ls_item_layout-t_image = '@3P@'.
ls_item_layout-fieldname = gd_tree->c_hierarchy_column_name.
ls_item_layout-style = cl_gui_column_tree=>style_default.
ld_node_text = ps_ekko-ebeln.
append ls_item_layout to lt_item_layout.
* Add node
call method gd_tree->add_node
exporting
i_relat_node_key = p_relate_key
i_relationship = cl_gui_column_tree=>relat_last_child
i_node_text = ld_node_text
is_outtab_line = ps_ekko
it_item_layout = lt_item_layout
importing
e_new_node_key = p_node_key.
endform. " ADD_EKKO_NODE
*&---------------------------------------------------------------------*
*& Form ADD_EKPO_LINE
*&---------------------------------------------------------------------*
* text
*----------------------------------------------------------------------*
* -->P_WA_EKPO text
* -->P_LD_EBELN_KEY text
* <--P_LD_EBELP_KEY text
*----------------------------------------------------------------------*
form add_ekpo_line using ps_ekpo like wa_ekpo
value(p_relate_key)
changing p_node_key.
data: ld_node_text type lvc_value,
ls_sflight type sflight.
* Set item-layout
data: lt_item_layout type lvc_t_layi,
ls_item_layout type lvc_s_layi.
ls_item_layout-t_image = '@3P@'.
ls_item_layout-fieldname = gd_tree->c_hierarchy_column_name.
ls_item_layout-style = cl_gui_column_tree=>style_default.
ld_node_text = ps_ekpo-ebelp.
append ls_item_layout to lt_item_layout.
* Add node
call method gd_tree->add_node
exporting
i_relat_node_key = p_relate_key
i_relationship = cl_gui_column_tree=>relat_last_child
i_node_text = ld_node_text
is_outtab_line = ps_ekpo
it_item_layout = lt_item_layout
importing
e_new_node_key = p_node_key.
endform. " ADD_EKPO_LINE
Return to the full list of instructions on how to create an example ALV tree report and find the next steps required to create the fully working demo.
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