ABAP_to_the_Future

10
ALV SALV Reporting Framework
왘 ID_POSITION
Then, you need to determine the priority. For example, if you want to sort by
monster color first and then sort all monsters of the same color by sanity, the
color has to have priority one and sanity priority two.
왘 IF_DESCENDING
Next, you need to say if you wish to sort the values in ascending or descending
order. Most often, the vast majority of data is sorted in ascending order in a
report.
왘 IF_SUBTOTAL
Then, you need to say if a change of value of the column will trigger a subtotal
for numeric fields (e.g., does the repo rt say how many green monsters there
are).
왘 ID_GROUP
If you don’t want subtotals, then you can put a line or a page break in the report
output when the value of the field changes by using the group import criteria.
You use the constant IF_SALV_C_SORT=>GROUP_UNDERLINE to say you want a line
and the constant IF_SALV_C_SORT=>GROUP_NEWPAGE for a page break.
왘 IF_OBLIGATORY
If for some reason you do not want your users to be able to override the sort
criteria you’ve defi ned programmatically, then you can set the obligatory
parameter to lock them in place. (However, this is not a feature you would ever
normally use.)
Figure 10.8 Add Sort Criteria Method Parameters
You usually want to have a default sort order for the report data that’s independent
of how the internal table might be sorted when it gets passed into the report.
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