// TODO: Currently we are using the IGroup.Names as IComparables. Should we add IComparer?
/// <summary>
/// Compares two <see cref="IGroup"/>s based on their <see cref="IGroup.Name"/>s.
/// </summary>
/// <param name="results">The current aggregate results.</param>
/// <param name="left">The first <see cref="IGroup"/> to compare.</param>
/// <param name="right">The second <see cref="IGroup"/> to compare.</param>
/// <param name="axis">Identifies if the groups are in <see cref="DataAxis.Rows"/> or <see cref="DataAxis.Columns"/>.</param>
/// <returns>
/// A signed integer that indicates the relative values of x and y, as shown in the following table.
/// <para>Value Meaning Less than zero x is less than y.</para>
/// <para>Zero x equals y.</para>
/// <para>Greater than zero x is greater than y.</para>
/// </returns>
public override int CompareGroups(IAggregateResultProvider results, IGroup left, IGroup right, DataAxis axis)
{
if (left.Name == NullValue.Instance && right.Name == NullValue.Instance)
{
return(0);
}
else if (left.Name == NullValue.Instance)
{
return(1);
}
else if (right.Name == NullValue.Instance)
{
return(-1);
}
IComparable leftComparable = left.Name as IComparable;
if (leftComparable != null)
{
return(leftComparable.CompareTo(right.Name));
}
IComparable rightComparable = right.Name as IComparable;
if (rightComparable != null)
{
return(-rightComparable.CompareTo(left.Name));
}
return(0);
}
internal TotalValue(IAggregateResultProvider results, Coordinate groups, int aggregate)
{
this.results = results;
this.aggregate = aggregate;
this.unasigendValue = true;
this.Groups = groups;
}
public GroupComparerDecorator(GroupComparer groupComparer, SortOrder sortOrder, IAggregateResultProvider results, DataAxis axis)
{
this.groupComparer = groupComparer;
this.results = results;
this.axis = axis;
this.sortOrderMultiplier = sortOrder == SortOrder.Descending ? -1 : 1;
}
internal override bool Filter(IGroup group, IAggregateResultProvider results, DataAxis axis)
{
if (this.FilterImpl != null)
{
return(this.FilterImpl.PassesFilter(group));
}
return(true);
}
/// <summary>
/// Compares two <see cref="IGroup"/>s based on their grand totals.
/// </summary>
/// <param name="results">The current aggregate results.</param>
/// <param name="left">The first <see cref="IGroup"/> to compare.</param>
/// <param name="right">The second <see cref="IGroup"/> to compare.</param>
/// <param name="axis">Identifies if the groups are in <see cref="DataAxis.Rows"/> or <see cref="DataAxis.Columns"/>.</param>
/// <returns>
/// A signed integer that indicates the relative values of x and y, as shown in the following table.
/// <para>Value Meaning Less than zero x is less than y.</para>
/// <para>Zero x equals y.</para>
/// <para>Greater than zero x is greater than y.</para>
/// </returns>
public override int CompareGroups(IAggregateResultProvider results, IGroup left, IGroup right, DataAxis axis)
{
Coordinate grandTotalCoordinateX;
Coordinate grandTotalCoordinateY;
if (axis == DataAxis.Rows)
{
grandTotalCoordinateX = new Coordinate(left, results.Root.ColumnGroup);
grandTotalCoordinateY = new Coordinate(right, results.Root.ColumnGroup);
}
else
{
grandTotalCoordinateX = new Coordinate(results.Root.RowGroup, left);
grandTotalCoordinateY = new Coordinate(results.Root.RowGroup, right);
}
AggregateValue aggregateValueX = results.GetAggregateResult(this.AggregateIndex, grandTotalCoordinateX);
AggregateValue aggregateValueY = results.GetAggregateResult(this.AggregateIndex, grandTotalCoordinateY);
// TODO: Exception handling, Provide AggregateResults Comparer, Proper order on value-vs-null and null-vs-value cases
if (aggregateValueX != null && aggregateValueY != null)
{
object valueX = aggregateValueX.GetValue();
object valueY = aggregateValueY.GetValue();
IComparable comparableX = valueX as IComparable;
if (comparableX != null)
{
return(comparableX.CompareTo(valueY));
}
IComparable comparableY = valueY as IComparable;
if (comparableY != null)
{
return(-comparableY.CompareTo(valueX));
}
}
return(0);
}
/// <summary> /// Formats the value located at the <paramref name="groups"/> <see cref="Coordinate"/>. The current value could be retrieved from the <paramref name="results"/>. /// </summary> /// <param name="groups">The <see cref="Coordinate"/> for the formatted value.</param> /// <param name="results">The current results in the data grouping.</param> /// <param name="aggregateIndex">The index of the aggregate description we are formatting value for.</param> /// <returns>The formatted value.</returns> protected internal abstract AggregateValue FormatValue(Coordinate groups, IAggregateResultProvider results, int aggregateIndex);
// TODO: Consider wrapping the IGroups in small objects that has settable 'IsFiltered' property similar to the TotalValue that has settable 'FormattedValue'.
// TODO: Or the other way around - make them both return an ISet/IDictionary implementations that contain the filtered groups / values for groups.
/// <summary>
/// Filters the groups within a parent group. Can filter based on count, average values or sorted values.
/// </summary>
/// <param name="groups">A read only list of all siblings.</param>
/// <param name="results">The current aggregate results.</param>
/// <param name="axis">Identifies if the groups are in <see cref="DataAxis.Rows"/> or <see cref="DataAxis.Columns"/>.</param>
/// <param name="level">The level of the groups.</param>
/// <returns>A <see cref="ICollection{IGroup}"/> implementation that is used to filter the groups.</returns>
protected internal abstract ICollection <IGroup> Filter(IReadOnlyList <object> groups, IAggregateResultProvider results, DataAxis axis, int level);
public override int CompareGroups(IAggregateResultProvider results, IGroup x, IGroup y, DataAxis axis)
{
throw new NotImplementedException();
}
/// <summary> /// Gets a read only collection of the <see cref="TotalValue"/>s for all siblings at the <see cref="Level"/> and <see cref="Axis"/>. Based on the <see cref="TotalValue.Value"/>s the <see cref="TotalValue.FormattedValue"/> should be set. /// </summary> /// <param name="valueFormatters">A read only list of the <see cref="TotalValue"/>s for all siblings at the <see cref="Level"/> and <see cref="Axis"/>.</param> /// <param name="results">The <see cref="IAggregateResultProvider"/> with the current data grouping results.</param> protected internal abstract void FormatTotals(IReadOnlyList <TotalValue> valueFormatters, IAggregateResultProvider results);
/// <inheritdoc />
protected internal override void FormatTotals(IReadOnlyList <TotalValue> valueFormatters, IAggregateResultProvider results)
{
double accumulation = 0;
foreach (var valueFormatter in valueFormatters)
{
AggregateValue value = valueFormatter.Value;
if (value != null)
{
accumulation += Convert.ToDouble(value.GetValue(), CultureInfo.InvariantCulture);
}
valueFormatter.FormattedValue = new ConstantValueAggregate(accumulation);
}
}
/// <summary> /// Compares two <see cref="IGroup"/>s based on the current aggregate results. /// </summary> /// <param name="results">The current aggregate results.</param> /// <param name="left">The first <see cref="IGroup"/> to compare.</param> /// <param name="right">The second <see cref="IGroup"/> to compare.</param> /// <param name="axis">Identifies if the groups are in <see cref="DataAxis.Rows"/> or <see cref="DataAxis.Columns"/>.</param> /// <returns> /// A signed integer that indicates the relative values of x and y, as shown in the following table. /// <para>Value Meaning Less than zero x is less than y.</para> /// <para>Zero x equals y.</para> /// <para>Greater than zero x is greater than y.</para> /// </returns> public abstract int CompareGroups(IAggregateResultProvider results, IGroup left, IGroup right, DataAxis axis);
/// <summary> /// Identifies if a group should be filtered or not. /// </summary> /// <param name="group">The group.</param> /// <param name="results">Results for the current grouping. Could be used for totals lookup.</param> /// <param name="axis">Identifies if the <paramref name="group"/> is positioned in the <see cref="DataAxis.Rows"/> or <see cref="DataAxis.Columns"/>.</param> /// <returns>True if the group should be preserved, False if the group should be removed.</returns> internal abstract bool Filter(IGroup group, IAggregateResultProvider results, DataAxis axis);
