int last;
int currentRowSpan = -1;
int currentRowInfoIndex = -1;
TableContext tableContext = htmlDataTable.getTableContext();
RowInfo rowInfo = null;
ColumnInfo columnInfo = null;
HtmlSimpleColumn currentColumn = null;
Map groupHashTable = new HashMap();
if (rows <= 0) {
last = htmlDataTable.getRowCount();
}
else {
last = first + rows;
}
//Loop over the Children Columns to find the Columns with groupBy Attribute true
List children = getChildren(htmlDataTable);
int nChildren = getChildCount(htmlDataTable);
for (int j = 0, size = nChildren; j < size; j++) {
UIComponent child = (UIComponent) children.get(j);
if (child instanceof HtmlSimpleColumn) {
currentColumn = (HtmlSimpleColumn) child;
if (currentColumn.isGroupBy()) {
groupHashTable.put(new Integer(j), null);
}
}
}
boolean groupEndReached = false;
for (int rowIndex = first; last == -1 || rowIndex < last; rowIndex++) {
htmlDataTable.setRowIndex(rowIndex);
rowInfo = new RowInfo();
//scrolled past the last row
if (!htmlDataTable.isRowAvailable()) {
break;
}
Set groupIndexList = groupHashTable.keySet();
List currentColumnContent = null;
for (Iterator it = groupIndexList.iterator(); it.hasNext();) {
currentColumnContent = new ArrayList();
Integer currentIndex = (Integer) it.next();
currentColumn = (HtmlSimpleColumn) children.get(currentIndex.intValue());
if (currentColumn.isGroupByValueSet()) {
currentColumnContent.add(currentColumn.getGroupByValue());
}
else {
// iterate the children - this avoids to add the column facet too
List currentColumnChildren = currentColumn.getChildren();
if (currentColumnChildren != null) {
collectChildrenValues(currentColumnContent, currentColumnChildren.iterator());
}
}
if (!isListEqual(currentColumnContent, (List) groupHashTable.get(currentIndex)) &&
currentRowInfoIndex > -1) {
groupEndReached = true;
groupHashTable.put(currentIndex, currentColumnContent);
}
else if (currentRowInfoIndex == -1) {
groupHashTable.put(currentIndex, currentColumnContent);
}
}
currentRowSpan++;
for (int j = 0, size = nChildren; j < size; j++) {
columnInfo = new ColumnInfo();
if (groupHashTable.containsKey(new Integer(j))) // Column is groupBy
{
if (currentRowSpan > 0) {
if (groupEndReached) {
((ColumnInfo)
((RowInfo)
tableContext.getRowInfos().get(currentRowInfoIndex - currentRowSpan + 1)).
getColumnInfos().get(j)).
setRowSpan(currentRowSpan);
columnInfo.setStyle(htmlDataTable.getRowGroupStyle());
columnInfo.setStyleClass(htmlDataTable.getRowGroupStyleClass());
}
else {
columnInfo.setRendered(false);
}
}
else {
columnInfo.setStyle(htmlDataTable.getRowGroupStyle());
columnInfo.setStyleClass(htmlDataTable.getRowGroupStyleClass());
}
}
else // Column is not group by
{
if (groupEndReached) {
((ColumnInfo)
((RowInfo)
tableContext.getRowInfos().get(currentRowInfoIndex)).
getColumnInfos().get(j)).
setStyle(htmlDataTable.getRowGroupStyle());
((ColumnInfo)
((RowInfo)
tableContext.getRowInfos().get(currentRowInfoIndex)).
getColumnInfos().get(j)).
setStyleClass(htmlDataTable.getRowGroupStyleClass());
}
}
rowInfo.getColumnInfos().add(columnInfo);
}
if (groupEndReached) {
currentRowSpan = 0;
groupEndReached = false;
}