These functions allow processing of ABAP internal tables in C.
ABAP internal tables follow the model of a relational database table.
ABAP internal tables consist of identical rows. When it is created, a table is empty. In ABAP you can fill rows into a table by the statements ‘Insert’ or ‘Append’. You can access a row by ‘Read Table’, and you can delete a row by ‘Delete’. You can free a table by ‘Free Table’, and you can receive information about tables by ‘Describe’.
These language constructs correspond to the following C routines:
- ItCreate
creates a new internal table
- ITAB_H
handle of an internal table
- ItDelete
deletes the content of a complete internal table and frees storage
- ItGetLine
reads a line from an internal table
- ItInsLine
inserts a line into the given position of an internal table
- ItAppLine
appends a line at the end of an internal table
- ItDelLine
deletes a line from an internal table
- ItGupLine
reads a line for update
- ItFree
resets an internal table to initial state
- ItFill
returns the number of lines in a table
- ItLeng
returns the width of a table, i.e. the size of a row of the table
The syntax and semantics of the above RFC calls are identical for all platforms supported.
The syntax of the RFC calls is described in saprfc.h. The syntax of the RFC calls for manipulating internal tables is described in sapitab.h.
Creating and filling a new internal table with the following example
const int myTableSize = 200;
ITAB_H handle;
void * ptr;
handle = IitCreate("MyTable", myTableSize, 0,0);
if(handle == ITAB_NULL)
{
... error
}
do
{
ptr = ItAppLine(handle);;
if(ptr != NULL)
{
memcpy(ptr,..., myTableSize);
}
while(ptr != NULL);
More help is available in the SAP help site:
http://help.sap.com/saphelp_46c/helpdata/de/22/043074488911d189490000e829fbbd/frameset.htm
