/// <summary>
/// Recupera os resultados das agregações.
/// </summary>
/// <param name="functions"></param>
/// <returns></returns>
public AggregateResultCollection GetAggregateResults(IEnumerable <AggregateFunction> functions)
{
if (functions == null)
{
throw new ArgumentNullException("functions");
}
AggregateResultCollection instance = new AggregateResultCollection();
if (this.AggregateFunctionsProjection != null)
{
IDictionary <string, object> propertyValues = ExtractPropertyValues(this.AggregateFunctionsProjection);
IEnumerable <AggregateResult> collection = CreateAggregateResultsForPropertyValues(functions, propertyValues);
instance.AddRange(collection);
}
return(instance);
}
/// <summary>
/// Gets the aggregate results generated for the given aggregate functions.
/// </summary>
/// <value>The aggregate results for the provided aggregate functions.</value>
/// <exception cref="ArgumentNullException"><c>functions</c> is null.</exception>
public AggregateResultCollection GetAggregateResults(IEnumerable<AggregateFunction> functions)
{
if (functions == null)
{
throw new ArgumentNullException("functions");
}
var resultCollection = new AggregateResultCollection();
if (this.AggregateFunctionsProjection == null)
{
return resultCollection;
}
var propertyValues = ExtractPropertyValues(AggregateFunctionsProjection);
var results = CreateAggregateResultsForPropertyValues(functions, propertyValues);
resultCollection.AddRange(results);
return resultCollection;
}
/// <summary>
/// Gets the aggregate results generated for the given aggregate functions.
/// </summary>
/// <value>The aggregate results for the provided aggregate functions.</value>
/// <exception cref="ArgumentNullException"><c>functions</c> is null.</exception>
public AggregateResultCollection GetAggregateResults(IEnumerable <AggregateFunction> functions)
{
if (functions == null)
{
throw new ArgumentNullException("functions");
}
var resultCollection = new AggregateResultCollection();
if (this.AggregateFunctionsProjection == null)
{
return(resultCollection);
}
var propertyValues = ExtractPropertyValues(AggregateFunctionsProjection);
var results = CreateAggregateResultsForPropertyValues(functions, propertyValues);
resultCollection.AddRange(results);
return(resultCollection);
}
/// <summary>
/// Updates aggregate results with calculated values.
/// </summary>
/// <param name="results">The aggregate result collection.</param>
public void SetAggregateResults(AggregateResultCollection results)
{
if (!IsAttached || results == null)
return;
var group = _groupInfo.Target as QueryableCollectionViewGroup;
if (group != null)
{
var aggregateFunctions =
((GridViewColumn)_column.Target).DataControl.Columns.Cast<GridViewColumn>()
.SelectMany(x => x.AggregateFunctions)
.ToDictionary(x => x.FunctionName, x => x);
if (!aggregateFunctions.Any())
return;
foreach (var result in results)
{
var functionName = AggregateHelper.BuildFunctionName(result.ColumnName, result.SummaryType);
AggregateFunction func;
aggregateFunctions.TryGetValue(functionName, out func);
var aggregateResult = group.AggregateResults.FirstOrDefault(x => x.FunctionName == functionName);
if (func == null)
{
if (aggregateResult != null)
group.AggregateResults.Remove(aggregateResult);
continue;
}
if (aggregateResult == null)
AddAggregateResult(group, result, func);
else
aggregateResult.FormattedValue = result.Value;
}
_aggregateResults = group.AggregateResults.ToList();
RefreshGroupFooter();
}
}
/// <summary>
/// Applies post-processing to result values and generates Empty results
/// for those aggregates not having the corresponding result retrieved.
/// </summary>
/// <param name="source">The source collection of aggregate results.</param>
/// <param name="aggregateDefinitions">The corresponfing aggregate definitions.</param>
/// <returns>AggregateResultCollection</returns>
private static AggregateResultCollection AdjustAggregateResults(AggregateResultCollection source, IEnumerable<AggregateDefinition> aggregateDefinitions)
{
var resultList = source.ToList();
var aggregates = aggregateDefinitions.ToList();
if (resultList.Count == 0)
{
foreach (var aggrDef in aggregates)
{
resultList.Add(
AggregateResult.CreateEmpty(
aggrDef.ColumnName,
aggrDef.SummaryType
));
}
}
else
{
foreach (var result in resultList)
{
var aggrDef = aggregates.FirstOrDefault(
x => x.ColumnName == result.ColumnName && x.SummaryType == result.SummaryType);
if (aggrDef != null)
aggregates.Remove(aggrDef);
}
if (aggregates.Any())
{
foreach (var aggrDef in aggregates)
{
resultList.Add(
AggregateResult.CreateEmpty(
aggrDef.ColumnName,
aggrDef.SummaryType
));
}
}
}
return new AggregateResultCollection(resultList);
}
public AggregationCompletedEventArgs(AggregateResultCollection results, IList<AggregateDefinition> aggregateDefinitions, Exception error)
{
AggregateResults = results;
AggregateDefinitions = aggregateDefinitions;
Error = error;
}