MM 获取抬头条件净价
SE24IF_PURCHASE_ORDER_MM
IM_HEADER是个接口，由系统负责实例化。
其中GET_CONDITIONS是获取抬头条件TAB页数据，可是直接通过IM_HEADER调用方法，返回的是空值。
查看方法GET_CONDITIONS，根据行号获取指定的条件定价值。全部的条目在变量po_tkomv_hash_table或tkomv中，可以尝试指针指向这两个变量。
观察行上获取条件净价的方法，标准方法通过宏命令mmpur_dynamic_cast强转my_parent，直接通过l_header调用get_tkomv获取。查看l_header方法GET_TKOMV是继承自接口IF_PURCHASING_DOCUMENT。可以用如下代码获取抬头条件净价
DATA: lo_po_doc TYPE REF TO if_purchasing_document .
DATA: lt_tkomv TYPE mmpur_tkomv .
lo_po_doc ?= ir_header.
lo_po_doc->get_tkomv( IMPORTINGex_tkomv = lt_tkomv ) .SAP标准代码
抬头获取条件净价
METHOD if_purchase_order_mm~get_conditions .
DATA: ls_cond_entry TYPE komv,
l_kposn TYPE komv-kposn.
CLEAR ex_conditions.
READ TABLE po_tkomv_hash_table WITH KEY kposn = l_kposn BINARY SEARCH
TRANSPORTING NO FIELDS.
IF sy-subrc IS INITIAL.
LOOP AT po_tkomv_hash_table INTO ls_cond_entry FROM sy-tabix.
IF ls_cond_entry-kposn NE l_kposn.
EXIT.
ENDIF.
APPEND ls_cond_entry TO ex_conditions.
ENDLOOP.
ELSE.
PERFORM mepo_badi_get_conditions IN PROGRAM saplmepo
USING l_kposn
CHANGING ex_conditions.
ENDIF.
ENDMETHOD. "IF_PURCHASE_ORDER_MM~GET_CONDITIONS行获取条件净价
METHOD if_purchase_order_item_mm~get_conditions .
DATA: l_header TYPE REF TO cl_po_header_handle_mm,
lt_conditions TYPE mmpur_tkomv,
ls_cond_entry LIKE LINE OF lt_conditions,
l_kposn TYPE komv-kposn.
CLEAR ex_conditions.
mmpur_dynamic_cast l_header my_parent.
CHECK NOT l_header IS INITIAL.
CALL METHOD l_header->get_tkomv
IMPORTING
ex_tkomv = lt_conditions.
l_kposn = po_item_number.
READ TABLE lt_conditions WITH KEY kposn = l_kposn BINARY SEARCH
TRANSPORTING NO FIELDS.
IF sy-subrc IS INITIAL.
LOOP AT lt_conditions INTO ls_cond_entry FROM sy-tabix.
IF ls_cond_entry-kposn NE l_kposn.
EXIT.
ENDIF.
APPEND ls_cond_entry TO ex_conditions.
ENDLOOP.
ELSE.
PERFORM mepo_badi_get_conditions IN PROGRAM saplmepo
USING l_kposn
CHANGING ex_conditions.
ENDIF.
ENDMETHOD.
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