ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

Компьютерный язык ABAP/4 - ключевые слова

MODIFY - Change a list line

Variants

1. MODIFY LINE n.
2. MODIFY LINE n OF CURRENT PAGE.
3. MODIFY LINE n OF PAGE m.
4. MODIFY CURRENT LINE.

Variant 1

MODIFY LINE n.

Additions

1. ... INDEX idx
2. ... LINE FORMAT fmt1 ... fmtn
3. ... FIELD VALUE f1 FROM g1 ... fn FROM gn
4. ... FIELD FORMAT f1 fmt11 ... fmt1m ... fn fmtn1 ... fmtnm

Effect

Changes the n th line of the list. This could be, for example, after line selection ( AT LINE-SELECTION , AT PFxx , AT USER-COMMAND ).
The current contents of the system field SY-LISEL are restored to the list as the line contents and the HIDE area for the line is re-determined from the current contents of the fields hidden with HIDE .

The return code value is set as follows:

SY-SUBRC = 0 Line was successfully changed.
SY-SUBRC <> 0 Line does not exist.

Note

With multiple-level line selection, the modification is always performed in the list where the (last) line selection was made, except in the case of the addition ... INDEX idx and MODIFY CURRENT LINE (see below).

Addition 1

... INDEX idx

Effect

Changes the relevant line in the list to list level idx (0, 1, 2, ...) with multiple line selection ( SY-LSIND ).

Addition 2

... LINE FORMAT fmt1 ... fmtn

Effect

The output format of the selected line is determined by the format specifications fmt1 , fmt2 ... . For a list of valid format specifications, see FORMAT .

Example


DATA I TYPE I VALUE 2.

WRITE: / 'Intensified'     INTENSIFIED,
         'Input'           INPUT,
         'color 1'         COLOR 1,
         'intensified off' INTENSIFIED OFF.

* Line selection
AT LINE-SELECTION.
  MODIFY CURRENT LINE
    LINE FORMAT INVERSE
                INPUT OFF
                COLOR = I.

After you have selected the the output list line (by double-clicking), the whole line is set to COLOR 2 and INVERSE and all INPUT fields are set to INPUT OFF . The fields with the attribute INTENSIFIED or INTENSIFIED OFF retain this because the attribute is not addressed here.

Addition 3

... FIELD VALUE f1 FROM g1 ... fn FROM gn

Effect

Overwrites the contents of the fields f1 , f2 , ... in the list line with the current contents of the fields g1 , g2 , ... (type conversion as for MOVE g1 , g2 , ... to type C). The field contents of f1 , f2 , ... themselves remain unchanged.

Notes

If a field (e.g. f2 ) is output several times in the line to be modified, only the first occurrence is modified. If the field is not output in the line at all, it is ignored.

You can omit the addition FROM g2 if the field f2 in the list line is to be modified from the current contents of f2 .

This means that

... FIELD VALUE f2

has the same effect as

... FIELD VALUE f2 FROM f2

The return code value of SY-SUBRC is not affected by the addition FIELD VALUE and so only depends on the existence of the selected list line.

Addition 4

... FIELD FORMAT f1 fmt11 ... fmt1m
... fn fmtn1 ... fmtnm

Effect

Modifies the output format of the field f1 according to the format specifications fmt11 ... fmt1m .
Similar to f2 , ..., fn . For a list of valid format specifications, see FORMAT . Fields that occur several times or not at all in the line are treated as in the addition FIELD VALUE .

Notes

If you combine the additions LINE FORMAT and FIELD FORMAT , the format set by LINE FORMAT is always valid for the whole line initially. Afterwards, it is changed by the format specifications for the individual fields.

Example


DATA: FLAG     VALUE 'X',
      TEXT(20) VALUE 'Australia',
      I TYPE I VALUE 7.
FORMAT INTENSIFIED OFF.
WRITE: / FLAG AS CHECKBOX, TEXT COLOR COL_NEGATIVE.

AT LINE-SELECTION.
  MODIFY CURRENT LINE
    LINE  FORMAT INTENSIFIED
    FIELD VALUE  FLAG FROM SPACE
    FIELD FORMAT FLAG INPUT OFF
                 TEXT COLOR = I.

When the user selects the displayed list line by double-clicking, the checkbox for FLAG is reset and can no longer accept values. The format of the entire line is set to "intensified" and TEXT is displayed in a different color.

Variant 2

MODIFY LINE n OF CURRENT PAGE.

Additions

1. ... FIELD VALUE f1 FROM g1 ... fn FROM gn
2. ... LINE FORMAT fmt1 .. fmtn
3. ... FIELD FORMAT f1 fmt11 ... fmt1m ... fn fmtn1 ... fmtnm

Effect

Changes the n th line on the current page (stored in the system field SY-CPAGE ).

Addition 1

... FIELD VALUE f1 FROM g1 ... fn FROM gn

Addition 2

... LINE FORMAT fmt1 .. fmtn

Addition 3

... FIELD FORMAT f1 fmt11 ... fmt1m
... fn fmtn1 ... fmtnm

Effect

See MODIFY LINE

Variant 3

MODIFY LINE n OF PAGE m.

Additions

1. ... FIELD VALUE f1 FROM g1 ... fn FROM gn
2. ... LINE FORMAT fmt1 ... fmtn
3. ... FIELD FORMAT f1 fmt11 ... fmt1m ... fn fmtn1 ... fmtnm

Effect

Changes the n th line on page m .

Addition 1

... FIELD VALUE f1 FROM g1 ... fn FROM gn

Addition 2

... LINE FORMAT fmt1 ... fmtn

Addition 3

... FIELD FORMAT f1 fmt11 ... fmt1m
... fn fmtn1 ... fmtnm

Effect

See MODIFY LINE

Variant 4

MODIFY CURRENT LINE.

Additions

1. ... FIELD VALUE f1 FROM g1 ... fn FROM gn
2. ... LINE FORMAT fmt1 ... fmtn
3. ... FIELD FORMAT f1 fmt11 ... fmt1m ... fn fmtn1 ... fmtnm

Effect

Changes the last line read (with line selection or READ LINE ), even across line levels. This variant is especially useful if the line to be modified has been read immediately before through line selection or using READ LINE . You then need to note the number of the line until the MODIFY .

Addition 1

... FIELD VALUE f1 FROM g1 ... fn FROM gn

Addition 2

... LINE FORMAT fmt1 ... fmtn

Addition 3

... FIELD FORMAT f1 fmt11 ... fmt1m
... fn fmtn1 ... fmtnm

Effect

ABAP/4 ОКМ ДМ экономическая информатика 4GL Теория и практика обработки информации

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