Illegal nested block statement referenc

Posted by hermes on 05-May-2016 10:11


I have an issue where I try to print multiple pdfs and the first PDF gets replaced. I am putting this in a for each now but when I use a buffer to the table i don't get a compile error (but the code doesn't work). But when I do this by using the table I get the below error . I did a find first for the table earlier

"Illegal nested block statement reference to table ... "

Can anyone see what I am doing wrong?? Thanks for any help

IF pdfcheck THEN
     DEFINE BUFFER bdd_pdfln FOR dd_pdfln.
          FOR EACH bdd_pdfln WHERE
                   bdd_pdfln EQ AND
                   bdd_pdfln   EQ "S"                   AND
                   bdd_pdfln    EQ dd_pdfhd.rec         AND
                   bdd_pdfln      EQ dd_pdfhd.order
                   BREAK BY
           {lbls\print_pdf.i &lbl=ttpdf.rept_name &ctnlbl=ttpdf.label}
           IF NOT LAST-OF( THEN
              RUN newpage IN handlePrnt.

All Replies

Posted by smat-consulting on 05-May-2016 10:29

maybe it "doesn't work" because the BREAK BY and LAST-OF phrase are referencing the default buffer of the table (dd_pdfln), instead of the defined buffer (bed_pdfln).

Illegal nested block statement is usually when you have a for each x within a for each x. Using defined buffers is a good way to make this work - there's only one caveat: use a define buffer for BOTH for each blocks. That way, if you refer to the original DB (or temp-) table, you'll get a heads-up...

Posted by James Palmer on 05-May-2016 11:06

Thomas looks to be spot on. Also, it probably isn't the cause of your error, but in my book the buffer definition should be at the top of the block, not halfway through the logic.

Posted by Thomas Mercer-Hursh on 05-May-2016 11:23

Note that it doesn't have to be nested for eachs, but any reference to the buffer out of scope.  For each has implied scope.  DO blocks require explicit scope.  The underlying principle here is that you want to limit scope as much as possible by implicit or explicit scoping and use named buffers to make the scoping very clear.  COMPILE LISTING will show you the scoping.

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