public ReportResults GroupAndTotal(CancellationToken cancellationToken, ReportResults pivotedRows)
{
IDictionary <IList <Tuple <PropertyPath, PivotKey, object> >, List <GroupedRow> > allReportRows
= new Dictionary <IList <Tuple <PropertyPath, PivotKey, object> >, List <GroupedRow> >();
var groupColumns = ViewInfo.DisplayColumns
.Where(col => TotalOperation.GroupBy == col.ColumnSpec.TotalOperation)
.Select(col => col.ColumnDescriptor)
.ToArray();
var pivotOnColumns = ViewInfo.DisplayColumns
.Where(col => TotalOperation.PivotKey == col.ColumnSpec.TotalOperation)
.Select(col => col.ColumnDescriptor)
.ToArray();
var allInnerPivotKeys = new HashSet <PivotKey>();
var allPivotKeys = new Dictionary <PivotKey, PivotKey>();
foreach (var rowItem in pivotedRows.RowItems)
{
cancellationToken.ThrowIfCancellationRequested();
allInnerPivotKeys.UnionWith(rowItem.PivotKeys);
IList <Tuple <PropertyPath, PivotKey, object> > groupKey = new List <Tuple <PropertyPath, PivotKey, object> >();
foreach (var column in groupColumns)
{
cancellationToken.ThrowIfCancellationRequested();
var pivotColumn = GetPivotColumn(column);
if (null == pivotColumn)
{
groupKey.Add(new Tuple <PropertyPath, PivotKey, object>(column.PropertyPath, null,
column.GetPropertyValue(rowItem, null)));
}
else
{
foreach (var pivotKey in GetPivotKeys(pivotColumn.PropertyPath, new [] { rowItem }))
{
cancellationToken.ThrowIfCancellationRequested();
if (!pivotKey.Contains(pivotColumn.PropertyPath))
{
continue;
}
groupKey.Add(new Tuple <PropertyPath, PivotKey, object>(column.PropertyPath, pivotKey, column.GetPropertyValue(rowItem, pivotKey)));
}
}
}
groupKey = ImmutableList.ValueOf(groupKey);
var pivotOnKeyValues = new List <KeyValuePair <PropertyPath, object> >();
foreach (var column in pivotOnColumns)
{
cancellationToken.ThrowIfCancellationRequested();
var pivotColumn = GetPivotColumn(column);
if (null == pivotColumn)
{
pivotOnKeyValues.Add(new KeyValuePair <PropertyPath, object>(column.PropertyPath,
column.GetPropertyValue(rowItem, null)));
}
else
{
Trace.TraceWarning(@"Unable to pivot on column {0} because it is already pivoted.", pivotColumn.PropertyPath);
}
}
var pivotOnKey = PivotKey.GetPivotKey(allPivotKeys, pivotOnKeyValues);
List <GroupedRow> rowGroups;
if (!allReportRows.TryGetValue(groupKey, out rowGroups))
{
rowGroups = new List <GroupedRow>();
allReportRows.Add(groupKey, rowGroups);
}
var rowGroup = rowGroups.FirstOrDefault(rg => !rg.ContainsKey(pivotOnKey));
if (null == rowGroup)
{
rowGroup = new GroupedRow();
rowGroups.Add(rowGroup);
}
rowGroup.AddInnerRow(pivotOnKey, rowItem);
}
var outerPivotKeys = allPivotKeys.Keys.Where(key => key.Length == pivotOnColumns.Length).ToArray();
var pivotKeyComparer = PivotKey.GetComparer(ViewInfo.DataSchema);
Array.Sort(outerPivotKeys, pivotKeyComparer);
var innerPivotKeys = allInnerPivotKeys.ToArray();
Array.Sort(innerPivotKeys, pivotKeyComparer);
var reportItemProperties = new List <DataPropertyDescriptor>();
var propertyNames = new HashSet <string>();
foreach (var displayColumn in ViewInfo.DisplayColumns)
{
cancellationToken.ThrowIfCancellationRequested();
if (displayColumn.ColumnSpec.Hidden)
{
continue;
}
var totalOperation = displayColumn.ColumnSpec.TotalOperation;
if (TotalOperation.GroupBy == totalOperation)
{
var pivotColumn = GetPivotColumn(displayColumn.ColumnDescriptor);
if (null == pivotColumn)
{
string propertyName = MakeUniqueName(propertyNames, displayColumn.PropertyPath);
reportItemProperties.Add(new GroupedPropertyDescriptor(propertyName, displayColumn, null));
}
else
{
foreach (var innerPivotKey in innerPivotKeys)
{
cancellationToken.ThrowIfCancellationRequested();
string propertyName = MakeUniqueName(propertyNames, displayColumn.PropertyPath);
reportItemProperties.Add(new GroupedPropertyDescriptor(propertyName, displayColumn, innerPivotKey));
}
}
}
}
foreach (var outerPivotKey in outerPivotKeys)
{
foreach (var displayColumn in ViewInfo.DisplayColumns)
{
cancellationToken.ThrowIfCancellationRequested();
if (displayColumn.ColumnSpec.Hidden)
{
continue;
}
if (TotalOperation.PivotValue == displayColumn.ColumnSpec.TotalOperation || TotalOperation.PivotKey == displayColumn.ColumnSpec.TotalOperation)
{
var pivotColumn = GetPivotColumn(displayColumn.ColumnDescriptor);
if (null == pivotColumn)
{
string propertyName = MakeUniqueName(propertyNames, displayColumn.PropertyPath);
reportItemProperties.Add(new GroupedPropertyDescriptor(propertyName, outerPivotKey, displayColumn, null));
}
else
{
foreach (var innerPivotKey in allInnerPivotKeys)
{
string propertyName = MakeUniqueName(propertyNames, displayColumn.PropertyPath);
reportItemProperties.Add(new GroupedPropertyDescriptor(propertyName, outerPivotKey, displayColumn, innerPivotKey));
}
}
}
}
}
return(new ReportResults(allReportRows.SelectMany(entry => entry.Value.Select(
reportRow => new RowItem(reportRow))),
reportItemProperties));
}
