Content and Structure Change 

Use

You are able to change the internal data table in various ways. Depending on which type of change you use, you  have to proceed differently to make the change visible on the front end in the ALV output as well.

You are able to make the following changes:

·        You change content or the sequence of the individual data records
Afterwards you need to refresh the ALV output

·        You replace the entire data table

Refresh Display of the ALV Output

If you have changed single values, added rows or deleted rows in the data table of list-type ALV outputs, you need to complete these changes in the ALV output as well by refreshing the ALV display.

For Changes in the Tree Structure you do not have to refresh the display. In the other ALV tools, you do not have to refresh the ALV output when you make the following changes:

§         Changes to the Display of Columns

§         Changes Sequence of Columns in the ALV display

§         Changes to the DDIC Reference of Columns

By default, the ALV output automatically scrolls to the beginning. However, you are able to determine that the current display (position on the screen) not be changed.

You are able to refresh the ALV output in two ways:

·        All settings for filters and sorting remain.

This setting can lead to newly inserted data records not being displayed because the filter setting hid exactly these data records.

·        All settings for filters and sorting remain.

Features

For changes to content and structure, you are able to make the following settings:

·        Refresh ALV output

·        Swap the data table of the ALV output

Refresh ALV output

With the refresh, you ensure that the changed values are available on the front end as well.

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		No	No

Methods

Function	Class	Method
Refresh ALV output without deleting filter and sort settings	CL_SALV_TABLE CL_SALV_HIERSEQ_TABLE	REFRESH (Parameter REFRESH_MODE: SOFT)
Refresh ALV output and delete filter and sort settings		REFRESH (Parameter REFRESH_MODE: FULL)

Change the Structure of the Data Table with SET_DATA

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

If you assign a new structure with SET_DATA, all objects that referred to the previous structure will be deleted such as all sort objects in list-type ALV outputs or all node objects in tree structures.

Methods

Function	Class	Method
Change structure and data table	CL_SALV_TABLE CL_SALV_HIERSEQ_TABLE CL_SALV_TREE CL_SALV_HIERSEQ_LEVEL	SET_DATA

 

Change the Structure of the Data Table with the SET_DATA Method

ALV Tool	Parameter	Remarks
Simple, two-dimensional table	T_TABLE	Table for structure and contents of the ALV output
Hierarchical-sequential list (in CL_SALV_HIERSEQ_TABLE)	LEVEL	Hierarchy level whose structure you wish to change
	T_TABLE	New table of hierarchy level
	T_BINDING	List of up to five foreign-key relationships
(in CL_SALV_HIERSEQ_LEVEL)	VALUE	New table of hierarchy level
	T_BINDING	List of up to five foreign-key relationships
Tree structure	T_TABLE	Initial table Empty table, only sets the structure