in Show (sub-)totals section from display-tag demos
i think logic of code is mistake but result is correct
in here , fill map with groups
int startIdx = 0;
for (int i=1; i < data.size(); i++) {
final ReportableListObject value = (ReportableListObject)
data.get(i);
boolean equal =
value.getCity().equals(previousValue.getCity());
if (!equal)
{
groups.put(previousValue.getCity(), new Integer(i -
startIdx));
groups.put(value.getCity(), new Integer(0));
previousValue = value;
// add (1)
}
}
groups.put(previousValue.getCity(), new Integer(data.size() -
startIdx));
and in here , add listview from groups to page
groupList.addAll(groups.keySet());
add(new ListView("border", groupList)
{
private int startIndex = 0;
public void populateItem(final ListItem listItem)
{
SubtotalTable subtable = new SubtotalTable("rows", data);
subtable.setStartIndex(startIndex);
String group = listItem.getModelObjectAsString();
int size = ((Integer)groups.get(group)).intValue();
subtable.setViewSize(size);
startIndex = size; // replace this with (2)
listItem.add(subtable);
listItem.add(new Label("name", new PropertyModel(subtable,
"group1")));
listItem.add(new Label("value", new
PropertyModel(subtable, "subtotal")));
}
});
1- startIdx = i;
2- startIndex += size;
i suppose map of groups keep <group , its count> instead <group , endIndex>
BUT code seem that it keep latter . in other side i see setViewSize(size).
after apply 1 and 2 to code still also result is correct (groups correctly
sumed)
please help ?
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