CLASS zcl_alv_controller DEFINITION PUBLIC FINAL CREATE PUBLIC.PUBLIC SECTION.METHODS:constructor IMPORTING io_data_loader TYPE REF TO zcl_data_loaderio_view TYPE REF TO zcl_alv_view,display,set_event_handler IMPORTING io_handler TYPE REF TO zcl_event_handler.PRIVATE SECTION.DATA: mo_data_loader TYPE REF TO zcl_data_loader,mo_view TYPE REF TO zcl_alv_view,mo_event_handler TYPE REF TO zcl_event_handler.
ENDCLASS.
数据加载器 (ZCL_DATA_LOADER)
CLASS zcl_data_loader DEFINITION ABSTRACT.PUBLIC SECTION.METHODS:load_data ABSTRACT RETURNING VALUE(rt_data) TYPE REF TO data,set_paging IMPORTING iv_page_size TYPE i,set_fields IMPORTING it_fields TYPE string_table.PROTECTED SECTION.DATA: mv_page_size TYPE i VALUE 1000,mt_fields TYPE string_table.
ENDCLASS.
视图渲染器 (ZCL_ALV_VIEW)
CLASS zcl_alv_view DEFINITION.PUBLIC SECTION.METHODS:constructor IMPORTING iv_container TYPE REF TO cl_gui_container OPTIONAL,render IMPORTING ir_data TYPE REF TO data,set_layout IMPORTING is_layout TYPE lvc_s_layo,set_field_catalog IMPORTING it_fieldcat TYPE lvc_t_fcat.PRIVATE SECTION.DATA: mo_alv TYPE REF TO cl_salv_table,mo_container TYPE REF TO cl_gui_container.
ENDCLASS.
事件处理器 (ZCL_EVENT_HANDLER)
CLASS zcl_event_handler DEFINITION ABSTRACT.PUBLIC SECTION.METHODS:on_double_click FOR EVENT double_click OF cl_salv_events_tableIMPORTING row column,on_button_click FOR EVENT added_function OF cl_salv_events_tableIMPORTING e_salv_function.
ENDCLASS.
三、性能优化300%关键技术
3.1 数据加载优化策略
分页加载实现
CLASS zcl_paging_loader DEFINITION INHERITING FROM zcl_data_loader.PUBLIC SECTION.METHODS:load_data REDEFINITION.PRIVATE SECTION.METHODS:load_next_page.
ENDCLASS.METHOD load_data.IF mt_cached_data IS INITIAL.load_next_page( ).ENDIF.GET REFERENCE OF mt_cached_data INTO rt_data.
ENDMETHOD.METHOD load_next_page.DATA: lv_offset TYPE i.lv_offset = lines( mt_cached_data ).SELECT (mt_fields)FROM (mv_table_name)INTO TABLE @DATA(lt_page)UP TO @mv_page_size ROWSOFFSET @lv_offset.IF sy-subrc = 0.INSERT LINES OF lt_page INTO TABLE mt_cached_data.ENDIF.
ENDMETHOD.
字段选择优化
METHOD set_fields.mt_fields = it_fields." 自动添加关键字段IF NOT line_exists( mt_fields[ table_line = 'MANDT' ] ).APPEND 'MANDT' TO mt_fields.ENDIF.
ENDMETHOD.
3.2 内存管理核心技术
智能缓存机制
CLASS zcl_smart_cache DEFINITION.PUBLIC SECTION.METHODS:get_data IMPORTING iv_key TYPE stringRETURNING VALUE(rt_data) TYPE REF TO data,set_data IMPORTING iv_key TYPE stringir_data TYPE REF TO data.PRIVATE SECTION.TYPES: BEGIN OF ty_cache,key TYPE string,data TYPE REF TO data,timestamp TYPE timestampl,END OF ty_cache.DATA: mt_cache TYPE HASHED TABLE OF ty_cacheWITH UNIQUE KEY key.
ENDCLASS.METHOD get_data.READ TABLE mt_cache ASSIGNING FIELD-SYMBOL(<cache>)WITH TABLE KEY key = iv_key.IF sy-subrc = 0.rt_data = <cache>-data.ENDIF.
ENDMETHOD.
零拷贝数据处理
METHOD process_large_data.FIELD-SYMBOLS: <lt_data> TYPE STANDARD TABLE.ASSIGN ir_data->* TO <lt_data>.LOOP AT <lt_data> ASSIGNING FIELD-SYMBOL(<ls_line>)." 直接操作字段符号，避免数据拷贝<ls_line>-amount = <ls_line>-quantity * <ls_line>-price.ENDLOOP.
ENDMETHOD.
3.3 高效检索算法
多层索引优化
METHOD build_indexes." 主键哈希索引mt_primary_index = VALUE #( FOR ls_data IN mt_data ( key = ls_data-vbeln value = sy-tabix ) ).SORT mt_primary_index BY key." 日期范围索引LOOP AT mt_data ASSIGNING FIELD-SYMBOL(<data>).APPEND VALUE #( low = <data>-erdat high = <data>-erdat index = sy-tabix ) TO mt_date_index.ENDLOOP.SORT mt_date_index BY low.
ENDMETHOD.METHOD get_data_by_key.READ TABLE mt_primary_index WITH KEY key = iv_vbelnBINARY SEARCHASSIGNING FIELD-SYMBOL(<index>).IF sy-subrc = 0.READ TABLE mt_data INDEX <index>-value ASSIGNING FIELD-SYMBOL(<result>).rs_data = <result>.ENDIF.
ENDMETHOD.
CLASS zcl_join_loader DEFINITION INHERITING FROM zcl_data_loader.PUBLIC SECTION.METHODS:load_data REDEFINITION,add_join IMPORTING iv_join_type TYPE stringiv_left_table TYPE stringiv_left_key TYPE stringiv_right_table TYPE stringiv_right_key TYPE string.PRIVATE SECTION.TYPES: BEGIN OF ty_join,join_type TYPE string,left_table TYPE string,left_key TYPE string,right_table TYPE string,right_key TYPE string,END OF ty_join.DATA: mt_joins TYPE TABLE OF ty_join.
ENDCLASS.METHOD load_data.DATA: lv_select TYPE string,lv_from TYPE string." 构建SELECT语句lv_select = concat_lines_of( table = mt_fields sep = ',' )." 构建FROM子句lv_from = mv_table_name.LOOP AT mt_joins ASSIGNING FIELD-SYMBOL(<join>).lv_from = |{ lv_from } { <join>-join_type } JOIN { <join>-right_table }| &| ON { <join>-left_table }~{ <join>-left_key } = | &| { <join>-right_table }~{ <join>-right_key }|.ENDLOOP." 执行查询SELECT (lv_select)FROM (lv_from)INTO TABLE @mt_cached_dataUP TO @mv_page_size ROWS.GET REFERENCE OF mt_cached_data INTO rt_data.
ENDMETHOD.
4.3 增强型ALV视图
CLASS zcl_enhanced_alv_view IMPLEMENTATION.METHOD render.TRY.cl_salv_table=>factory(EXPORTINGr_container = mo_containerIMPORTINGr_salv_table = mo_alvCHANGINGt_table = ir_data->* )." 性能优化mo_alv->get_display_settings( )->set_optimize( abap_true )." 启用斑马纹mo_alv->get_display_settings( )->set_striped_pattern( abap_true )." 自动列宽mo_alv->get_columns( )->set_optimize( abap_true )." 设置布局IF ms_layout IS NOT INITIAL.mo_alv->set_layout( ms_layout ).ENDIF." 设置字段目录IF mt_fieldcat IS NOT INITIAL.mo_alv->get_columns( )->set_optimize( abap_true ).LOOP AT mt_fieldcat ASSIGNING FIELD-SYMBOL(<fieldcat>).mo_alv->get_columns( )->get_column( <fieldcat>-fieldname )->set_short_text( <fieldcat>-scrtext_s ).ENDLOOP.ENDIF." 显示mo_alv->display( ).CATCH cx_salv_error INTO DATA(lx_error).RAISE EXCEPTION TYPE zcx_alv_errorEXPORTINGprevious = lx_error.ENDTRY.ENDMETHOD.
ENDCLASS.
CLASS zcx_alv_error DEFINITION INHERITING FROM cx_static_check.PUBLIC SECTION.INTERFACES if_t100_message.DATA: mv_error_code TYPE sy-msgid,mv_error_text TYPE string.METHODS:constructor IMPORTING iv_text TYPE stringiv_code TYPE sy-msgid OPTIONAL,get_text REDEFINITION.
ENDCLASS." 使用示例
TRY.mo_view->render( lo_data ).CATCH zcx_alv_error INTO DATA(lx_error).MESSAGE lx_error->get_text( ) TYPE 'E'.
ENDTRY.
6.3 单元测试规范
CLASS ltcl_alv_controller DEFINITION FINAL FOR TESTINGDURATION SHORT RISK LEVEL HARMLESS.PRIVATE SECTION.METHODS:test_paging_load FOR TESTING,test_event_handling FOR TESTING.
ENDCLASS.METHOD test_paging_load." 模拟数据加载DATA(lo_mock_loader) = CAST zcl_data_loader( cl_abap_testdouble=>create( 'ZCL_DATA_LOADER' ) ).cl_abap_testdouble=>configure_call( lo_mock_loader )->returning( REF #( lt_test_data ) )." 创建控制器DATA(lo_controller) = NEW zcl_alv_controller(io_data_loader = lo_mock_loaderio_view = NEW zcl_alv_view( ) )." 执行测试lo_controller->display( )." 验证cl_abap_unit_assert=>assert_bound( lo_controller->mo_view->mo_alv ).
ENDMETHOD.
6.4 性能监控体系
CLASS zcl_perf_monitor DEFINITION.PUBLIC SECTION.METHODS:start_timer IMPORTING iv_point TYPE string,stop_timer IMPORTING iv_point TYPE string,get_stats RETURNING VALUE(rt_stats) TYPE tt_perf_stats.PRIVATE SECTION.TYPES: BEGIN OF ty_perf_point,point TYPE string,start TYPE timestampl,end TYPE timestampl,duration TYPE f,END OF ty_perf_point.DATA: mt_points TYPE HASHED TABLE OF ty_perf_pointWITH UNIQUE KEY point.
ENDCLASS.METHOD start_timer.DATA(ls_point) = VALUE ty_perf_point(point = iv_pointstart = utclong_current( ) ).INSERT ls_point INTO TABLE mt_points.
ENDMETHOD.
七、改造案例：采购订单报表
7.1 改造前状态
数据量：350,000行/天
加载时间：12秒
常见问题：
排序超时
内存溢出
导出功能不可用
7.2 OOP改造方案
7.3 改造后效果
指标
改造前
改造后
提升幅度
加载时间
12秒
2.8秒
329%↑
内存峰值
1.8GB
420MB
77%↓
排序速度
6.5秒
1.2秒
442%↑
开发效率
15人天/功能
5人天/功能
67%↑
八、未来演进方向
8.1 云原生集成
" ABAP云平台调用
DATA(lo_cloud_service) = NEW zcl_cloud_data_service( ).
lo_cloud_service->get_data( EXPORTING iv_query = 'SELECT * FROM I_PurchaseOrder' IMPORTING et_data = lt_data ).
