Set Internal Data Table 

Use

With the ALV tool, you display table-type structures. For this reason, your application's first task is to transfer a suitable data table to ALV. It does not matter whether you transfer an existing database table (thus providing all DDIC information) or whether you define the fields of the data table yourself.

Based on various data models that are the basis for the ALV tools, you transfer different table tables to ALV depending on which ALV tool you are using:

·        Simple, two-dimensional table
The data table has a relational structure.

·        Hierarchical-sequential list
The hierarchy of the list is restricted to two levels. For each of these levels, you transfer an internal data table and link them with up to five foreign key relationships

·        Tree structure
The table that you transfer to the ALV object model only contains the structure. There is no data in this table. To fill the tree structure, add the required nodes in the form of NODE objects one at a time.

Features

You are able to make the following settings for data table:

·        First determine data table

·        Determine display of empty data table

Setting the Data Table for the First Time with FACTORY

To set the internal data table for the first time, always proceed in the same way no matter which ALV tool you are using: use the FACTORY method.

You can only use the FACTORY method the first time you call a table. To make changes to the table, read the chapter Changing and Updating the Contents of the ALV Output.

Display type ALV Tool	Classic ABAP list	Full screen	In the Container
Simple, two-dimensional table	Yes	Yes	Yes
Hierarchical-sequential list	Yes
Tree structure		Yes	Yes

Depending on which ALV tool you are using, the parameters of the FACTORY method are different:

Setting the Data Table with the FACTORY method

ALV Tool	Parameter	Remarks
Simple, two-dimensional table	T_TABLE	Table for structure and contents of the ALV output
Hierarchical-sequential list	T_TABLE_LEVEL1	Table for header level
	T_TABLE_LEVEL2	Table for position level
	T_BINDING_LEVEL1_LEVEL2	List of up to five foreign-key relationships
Tree structure	T_TABLE	Initial table Empty table, only sets the structure

Determine Display of Empty Data Table

By default, the following elements are displayed when the data table is empty.

·        The information from the design object for the header area of the list (if available)

·        The column header of the ALV output

·        A note that there is no data

You are able to determine that only the information from the design object for the header area of the list be displayed.

Display type ALV Tool	Classic ABAP list	Full screen	In the Container
Simple, two-dimensional table	Yes	No	No
Hierarchical-sequential list	Yes
Tree structure		No	No

Methods

Function	Class	Method
Determine Display of Empty Data Table	CL_SALV_ DISPLAY_SETTINGS	SET_SUPPRESS_EMPTY_DATA
Get display of empty data table		GET_SUPPRESS_EMPTY_DATA