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FIELD-SYMBOLS for TABLE types



 
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PostPosted: Wed Oct 17, 2007 3:17 pm    Post subject: FIELD-SYMBOLS for TABLE types Reply with quote
Code:

TYPES: BEGIN OF line,
         col1 TYPE c,
         col2 TYPE c,
       END OF line.

DATA: wa TYPE line,
      itab TYPE HASHED TABLE OF line WITH UNIQUE KEY col1,
      key(4) TYPE c VALUE 'COL1'.

FIELD-SYMBOLS <fs> TYPE ANY TABLE.

ASSIGN itab TO <fs>.

READ TABLE <fs> WITH TABLE KEY (key) = 'X' INTO wa.


The internal table ITAB is assigned to the generic field symbol <FS>, after which it is possible to address the table key of the field symbol dynamically. However, the static address

READ TABLE <fs> WITH TABLE KEY col1 = 'X' INTO wa.

is not possible syntactically, since the field symbol does not adopt the key of table ITAB until runtime. In the program, the type specification ANY TABLE only indicates that <FS> is a table. If the type had been ANY (or no type had been specified at all), even the specific internal table statement READ TABLE <FS> would not have been possible.


Code:

      TYPES: ty_iscj_postings TYPE TABLE OF iscj_postings.
      FIELD-SYMBOLS:
               <it_tab>     TYPE ty_iscj_postings,
               <wa_tab>     TYPE iscj_postings.

      ASSIGN ('(SAPMFCJ0)ITCJ_E_POSTINGS[]') TO <it_tab>.

      IF <it_tab> IS ASSIGNED.

        READ TABLE <it_tab> ASSIGNING <wa_tab> WITH KEY
          CAJO_NUMBER = <tab>-CAJO_NUMBER
          COMP_CODE   = <tab>-COMP_CODE
          FISC_YEAR   = <tab>-FISC_YEAR
          POSTING_NUMBER = <tab>-POSTING_NUMBER.

        IF sy-subrc IS INITIAL.

          <wa_tab>-DOCUMENT_NUMBER = zgfordn_str-payment_xblnr.
          MODIFY TABLE <it_tab> FROM <wa_tab>
            TRANSPORTING DOCUMENT_NUMBER.

        ENDIF.
*        LOOP AT <it_tab> ASSIGNING <wa_tab>.
*          CHECK <wa_tab>-CAJO_NUMBER = <tab>-CAJO_NUMBER
*            AND <wa_tab>-COMP_CODE = <tab>-COMP_CODE
*            AND <wa_tab>-FISC_YEAR = <tab>-FISC_YEAR
*            AND <wa_tab>-POSTING_NUMBER = <tab>-POSTING_NUMBER.
*           <wa_tab>-DOCUMENT_NUMBER = zgfordn_str-payment_xblnr.
*           MODIFY TABLE <it_tab> FROM <wa_tab>.
**        LOOP AT <it_tab> ASSIGNING <wa_tab>.
**          <wa_tab>-DOCUMENT_NUMBER = <tab>-DOCUMENT_NUMBER.
*        ENDLOOP.
      ENDIF.
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