@SuppressWarnings("unchecked")
public void sortDown() {
Long assignmentId = getAssignmentIdFromParam();
if (logger.isDebugEnabled()) {
logger.debug("Sort: sorting down: " + assignmentId);
}
List<Assignment> assignments = getGradebookManager().getAssignments(getGradebookId());
if (assignments.size() > 1) {
ensureAssignmentsSorted(assignments, GradableObject.sortingComparator, true);
// now adjust the numbering
for (int i = 0; i < assignments.size(); i++) {
Assignment a1 = assignments.get(i);
if (a1.getId().equals(assignmentId)) {
if (i < (assignments.size() - 1)) {
Assignment a2 = assignments.get(i + 1);
// only swap items which are in the same category
if ((a1.getCategory() == null && a2.getCategory() == null)
|| (a1.getCategory().equals(a2.getCategory()))) {
// swap the ordering of this item and the item below it
Integer holder = a1.getSortOrder();
a1.setSortOrder(a2.getSortOrder());
a2.setSortOrder(holder);
logger.info(
"Sort: DOWN swapping: "
+ a1.getId()
+ " (to "
+ a1.getSortOrder()
+ " from "
+ holder
+ ") with "
+ a2.getId());
// save the new orders
getGradebookManager().updateAssignment(a1);
getGradebookManager().updateAssignment(a2);
} else {
logger.info(
"Sort: DOWN: unable to swap items ("
+ a1.getId()
+ ","
+ a2.getId()
+ ") in different categories");
}
}
break;
}
}
}
}
@SuppressWarnings("unchecked")
private void ensureAssignmentsSorted(List assignments, Comparator comparator, boolean save) {
if (logger.isDebugEnabled()) {
logger.debug(
"ensureAssignmentsSorted: comparator="
+ comparator
+ ", save="
+ save
+ ", assignments= "
+ Arrays.toString(assignments.toArray()));
}
// remove any non-assignments first
List gradeables = new ArrayList();
for (Iterator iterator = assignments.iterator(); iterator.hasNext(); ) {
GradableObject go = (GradableObject) iterator.next();
if (!(go instanceof Assignment)) { // ! go.isAssignment()) {
gradeables.add(go);
iterator.remove();
}
}
Collections.sort(gradeables, GradableObject.nameComparator);
// put everything in the established sort order first (if needed)
if (comparator == null) {
comparator = GradableObject.dateComparator;
if (logger.isDebugEnabled()) {
logger.debug("ensureAssignmentsSorted: setting default comparator=" + comparator);
}
}
if (!NoChangeMarkerComparator.class.isAssignableFrom(comparator.getClass())) {
// only sort if this is not the no-sort marker
if (logger.isDebugEnabled()) {
logger.debug("ensureAssignmentsSorted: sorting with comparator=" + comparator);
}
Collections.sort(assignments, comparator);
} else {
if (logger.isDebugEnabled()) {
logger.debug(
"ensureAssignmentsSorted: no sort, using NoChangeMarkerComparator=" + comparator);
}
}
// always need to sort by category
Collections.sort(assignments, GradableObject.categoryComparator);
// now ensure the numbering is set and correct
int saveCount = 0;
int updateCount = 0;
for (int i = 0; i < assignments.size(); i++) {
Assignment assignment = (Assignment) assignments.get(i);
Integer curOrder = assignment.getSortOrder();
if (logger.isDebugEnabled()) {
logger.debug(
"ensureAssignmentsSorted: checking if current order ("
+ curOrder
+ ") matches correct order ("
+ i
+ ") for assignment: "
+ assignment);
}
if (curOrder == null || i != curOrder.intValue()) {
// no match so we need to update it (else it is already set correctly, only save if needed)
assignment.setSortOrder(i);
updateCount++;
if (logger.isDebugEnabled()) {
logger.debug(
"ensureAssignmentsSorted: setting sort order ("
+ i
+ ") for assignment: "
+ assignment);
}
if (save) {
getGradebookManager().updateAssignment(assignment);
saveCount++;
if (logger.isDebugEnabled()) {
logger.debug("ensureAssignmentsSorted: saving assignment: " + assignment);
}
}
}
}
// set the ordering up in the assignment with support for categories
Map<String, List<Assignment>> categoryAssignments =
new LinkedHashMap<String, List<Assignment>>();
for (Assignment assignment : (List<Assignment>) assignments) {
String category = "NULL";
if (assignment.getCategory() != null) {
category = assignment.getCategory().getName();
}
if (!categoryAssignments.containsKey(category)) {
categoryAssignments.put(category, new ArrayList<Assignment>());
}
categoryAssignments.get(category).add(assignment);
// assignment.assignSorting(assignments.size(), i);
}
for (Entry<String, List<Assignment>> entry : categoryAssignments.entrySet()) {
List<Assignment> l = entry.getValue();
for (int i = 0; i < l.size(); i++) {
Assignment assignment = l.get(i);
// assign the counter for ordering
assignment.assignSorting(l.size(), i);
if (logger.isDebugEnabled()) {
logger.debug("ensureAssignmentsSorted: ordered: " + i + " : " + assignment);
}
}
}
// add back in the gradeables to the end
for (Object gradeable : gradeables) {
assignments.add(gradeable);
}
if (logger.isDebugEnabled()) {
logger.debug(
"ensureAssignmentsSorted: sorted assignments (updated="
+ updateCount
+ ", saved="
+ saveCount
+ "): "
+ Arrays.toString(assignments.toArray()));
}
}