本文介绍如何在SALV上添加过滤器(filter)，具体方法如下：
1，通过方法get_filters()取得filter类CL_SALV_FILTERS的引用，
2，调用方法ADD_FILTERS添加过滤的条件，过滤条件和range和select-options一样，用到了sign，option，low&high。
sign：I-范围内；E-范围外
option： EQ-等于, NE-不等于, GT-大于, GE-大等于，LE-小等于, LT-小于,CP-包含pattern, NP-不包含pattern， 用到的通配符 '*'(多个字符)， '+'(单独字符)
low：下限值
high：上限值
本例子添加日期字段ERDAT的过滤条件'20021009' ，只有日期等于'20021009'的数据才显示。
代码在SALV教程1-创建简单SALV基础上添加了一个方法set_filters。
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*&---------------------------------------------------------------------*
*& 一个简单的通过类CL_SALV_TABLE生成SALV的例子
*&---------------------------------------------------------------------*
REPORT z_salv_13.
*
*----------------------------------------------------------------------*
* CLASS lcl_report DEFINITION
*----------------------------------------------------------------------*
CLASS lcl_report DEFINITION.
*
PUBLIC SECTION.
*
* 定义SALV输出内表
TYPES: BEGIN OF ty_vbak,
vbeln TYPE vbak-vbeln,
erdat TYPE erdat,
auart TYPE auart,
kunnr TYPE kunnr,
END OF ty_vbak.
*
DATA: t_vbak TYPE STANDARD TABLE OF ty_vbak.
*
* ALV reference
DATA: o_alv TYPE REF TO cl_salv_table.
*
METHODS:
* 抽取数据
get_data,
*
* 生成输出内容
generate_output.
*
*$*$*.....CODE_ADD_1 - Begin..................................1..*$*$*
*
* 定义private method来设定SALV不同特性
PRIVATE SECTION.
METHODS:
set_pf_status CHANGING co_alv TYPE REF TO cl_salv_table.
METHODS:set_filters CHANGING co_alv TYPE REF TO cl_salv_table.
*$*$*.....CODE_ADD_1 - End....................................1..*$*$*
ENDCLASS. "lcl_report DEFINITION
*----------------------------------------------------------------------*
* CLASS lcl_report IMPLEMENTATION
*----------------------------------------------------------------------*
* 类实现
CLASS lcl_report IMPLEMENTATION.
*
METHOD get_data.
* 抽取数据
SELECT vbeln
erdat
auart
kunnr
INTO TABLE t_vbak
FROM vbak
UP TO 20 ROWS.
*
ENDMETHOD. "get_data
*.......................................................................
METHOD generate_output.
* New ALV instance
* We are calling the static Factory method which will give back
* the ALV object reference.
*
* exception class
DATA: lx_msg TYPE REF TO cx_salv_msg.
TRY.
cl_salv_table=>factory(
IMPORTING
r_salv_table = o_alv
CHANGING
t_table = t_vbak ).
CATCH cx_salv_msg INTO lx_msg.
ENDTRY.
*
*$*$*.....CODE_ADD_2 - Begin..................................2..*$*$*
*
* In this area we will call the methods which will set the
* different properties to the ALV
* 调用status设置方法
CALL METHOD set_pf_status
CHANGING
co_alv = o_alv.
* 调用filter设置方法
CALL METHOD set_filters
CHANGING
co_alv = o_alv.
*$*$*.....CODE_ADD_2 - End....................................2..*$*$*
*
*
* 调用Display方法将数据输出到屏幕上
o_alv->display( ).
*
ENDMETHOD. "generate_output
*
*$*$*.....CODE_ADD_3 - Begin..................................3..*$*$*
*
* In this area we will implement the methods which are defined in
* the class definition
* status设置方法实现
METHOD set_pf_status.
DATA: lo_functions TYPE REF TO cl_salv_functions_list.
* 设置默认的标准状态栏
lo_functions = co_alv->get_functions( ).
lo_functions->set_default( abap_true ).
ENDMETHOD.
* filter设置方法的实现
METHOD set_filters.
*
DATA: lo_filters TYPE REF TO cl_salv_filters.
*
lo_filters = co_alv->get_filters( ).
*
* Set the filter for the column ERDAT
* the filter criteria works exactly same as any
* RANGE or SELECT-OPTIONS works.
TRY.
CALL METHOD lo_filters->add_filter
EXPORTING
columnname = 'ERDAT'
sign = 'I'
option = 'EQ'
low = '20021009' "2002.10.09
* high =
.
CATCH cx_salv_not_found . "#EC NO_HANDLER
CATCH cx_salv_data_error . "#EC NO_HANDLER
CATCH cx_salv_existing . "#EC NO_HANDLER
ENDTRY.
*
ENDMETHOD. "set_filters
*$*$*.....CODE_ADD_3 - End....................................3..*$*$*
*
ENDCLASS. "lcl_report IMPLEMENTATION
START-OF-SELECTION.
DATA: lo_report TYPE REF TO lcl_report.
CREATE OBJECT lo_report.
* 抽取数据
lo_report->get_data( ).
* 生成SALV
lo_report->generate_output( ).
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没有添加过滤之前的运行结果，
添加过滤之后，只显示了2002.10.09的数据
以上。