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ABAP Syntax Starting with “M”


Home »ABAP Syntax » ABAP Syntax Starting with “M”


Syntax Starting with “M”

MESSAGE

Displays a message.

Syntax

MESSAGE <xnnn> [WITH <f1>… <f4>] [RAISING <except>].

MESSAGE ID <mid> TYPE <x> NUMBER <nnn>.

MESSAGE <xnnn>(<mid>).

Displays the message <nnn> of message class <mid> as message type <x>. The message type specifies how the message is displayed, and how the program reacts. The WITH addition allows you to fill placeholders in the message text. The RAISING addition in function modules and methods allows you to terminate the procedure and trigger the exception <exception>.




MESSAGE <msg> TYPE <x>

This variant display a string, <msg>, directly as a message of the type <x>.

METHOD

Introduces the implementation of a method in a class.

Syntax

METHOD <meth>.

Only occurs in the implementation part of classes. Introduces a statement block that ends with ENDMETHOD. You do not have to specify any interface parameters, since these are defined in the method declaration.

METHODS

Declares methods in classes and interfaces.

Syntax

METHODS <meth> [FOR EVENT <evt> OF <cif>]
IMPORTING… [VALUE(]<ii>[)] TYPE <t> [OPTIONAL]…
EXPORTING… [VALUE(]<ei>[)] TYPE <t> [OPTIONAL]…
CHANGING … [VALUE(]<ci>[)] TYPE <t> [OPTIONAL]…
RETURNING VALUE(<r>)
EXCEPTIONS       … <ei>…
[ABSTRACT]
[FINAL]
[REDEFINITION].

You declare a method <met> in the definition part of a class or in the definition of an interface: The IMPORTING, EXPORTING, CHANGING, RETURNING, and EXCEPTIONS additions define the parameter interface and exceptions of the method. The ABSTRACT addition defines an abstract class, which cannot be implemented in the same class. The function of a non-abstract method must be implemented using METHOD. The FINAL addition prevents you from redefining the method in subclasses. The REDEFINITION addition redefines a method of a superclass. The FOR EVENT addition declares an event handler method for the <evt> event of a class or interface.

MODIFY for Database Tables

Inserts or changes lines in database tables.

Syntax

MODIFY <dbtab> FROM <wa>.

MODIFY <dbtab> FROM TABLE <itab>.

Works like INSERT for database tables, if there is not yet a line in the table with the same primary key. Works like UPDATE if a line already exists with the same primary key.

MODIFY for any Internal Table

Changes the content of lines in internal tables of any type.

Syntax

MODIFY TABLE <itab> FROM <wa> [TRANSPORTING <f1> <f 2>…]
[ASSIGNING <FS> | REFERENCE INTO <dref>].

Copies the work area <wa> into the line of the internal table with the same table key as <wa>. If you use ASSIGNING or INTO REFERENCE, field symbol <FS> refers to the modified line or the relevant data reference is stored in <dref> after the statement. You can use the TRANSPORTING addition to specify the exact components that you want to change.

MODIFY <itab> FROM <wa> TRANSPORTING <f1> <f 2>… WHERE <logexp>.

Copies the work area <wa> into the line of the internal table for which the logical expression is true. In each comparison of the logical expression, the first operand must be a component of the line structure.

MODIFY for Index Tables

Changes the content of lines in index tables.

Syntax

MODIFY <itab> FROM <wa> [INDEX <idx>] [TRANSPORTING <f1> <f 2>…]
[ASSIGNING <FS> | REFERENCE INTO <dref>].

Copies the work area <wa> into the line of the internal table with the index <idx>. If you omit the INDEX addition, you can only use the statement within a LOOP. In this case, you change the current loop line If you use ASSIGNING or INTO REFERENCE, field symbol <FS> refers to the modified line or the relevant data reference is stored in <dref> after the statement.

A D V E R T I S E M E N T

S A P - R E S O U R C E S


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