--- loncom/interface/spreadsheet/assesscalc.pm	2003/10/03 15:39:46	1.17.2.2
+++ loncom/interface/spreadsheet/assesscalc.pm	2003/09/05 01:06:45	1.18
@@ -1,5 +1,5 @@
 #
-# $Id: assesscalc.pm,v 1.17.2.2 2003/10/03 15:39:46 albertel Exp $
+# $Id: assesscalc.pm,v 1.18 2003/09/05 01:06:45 matthew Exp $
 #
 # Copyright Michigan State University Board of Trustees
 #
@@ -44,11 +44,12 @@ assesscalc
 package Apache::assesscalc;
 
 use strict;
+use warnings FATAL=>'all';
+no warnings 'uninitialized';
 use Apache::Constants qw(:common :http);
 use Apache::lonnet;
 use Apache::loncommon;
 use Apache::Spreadsheet;
-use Apache::loncoursedata();
 use HTML::Entities();
 use Spreadsheet::WriteExcel;
 use GDBM_File;
@@ -126,7 +127,6 @@ sub clear_package {
 
 sub initialize {
     &clear_package();
-    &Apache::loncoursedata::clear_internal_caches();
 }
 
 ########################################################
@@ -150,7 +150,6 @@ sub initialize_package {
     }
     &load_cached_export_rows();
     &load_parameter_caches();
-    &Apache::loncoursedata::clear_internal_caches();
 }
 
 ########################################################
@@ -170,7 +169,6 @@ sub load_parameter_caches {
     #
     # Course Parameters Cache
     if (! %courseopt) {
-        &Apache::lonnet::logthis("loading course options");
         $current_course = $ENV{'request.course.id'};
         undef(%courseopt);
         if (! defined($current_name) || ! defined($current_domain)) {
@@ -597,10 +595,7 @@ sub compute {
         while (my ($parm,$value) = each(%parameters)) {
             last if ($self->blackout());
             next if ($parm !~ /^(parameter_.*)_problemstatus$/);
-	    if ($parameters{$1.'_answerdate'} ne '' &&
-		$parameters{$1.'_answerdate'} < time) {
-		next;
-	    }
+            next if ($parameters{$1.'_answerdate'}<time);
             if (lc($value) eq 'no') {
                 # We must blackout this sheet
                 $self->blackout(1);
@@ -695,7 +690,7 @@ These rows are saved in the students dir
 ########################################################
 ########################################################
 sub load_cached_export_rows {
-    %Exportrows = undef;
+    undef(%Exportrows);
     my @tmp = &Apache::lonnet::dump('nohist_calculatedsheets_'.
                                     $ENV{'request.course.id'},
                                     $current_domain,$current_name,undef);
@@ -741,7 +736,9 @@ sub export_data {
         ! exists($Exportrows{$symb}) || ! defined($Exportrows{$symb})  ||
         ! $self->check_expiration_time($Exportrows{$symb}->{'time'}) ||
         ! exists($Exportrows{$symb}->{$self->{'filename'}}) ||
-        ! defined($Exportrows{$symb}->{$self->{'filename'}})) {
+        ! defined($Exportrows{$symb}->{$self->{'filename'}}) ||
+        ! ref($Exportrows{$symb}->{$self->{'filename'}}) 
+        ) {
         $self->compute();
     }
     my @Data = @{$Exportrows{$symb}->{$self->{'filename'}}};