private double[] GetNumbers(AggregationsHelper aggregations, IEnumerable <FieldAggregation> fields)
{
var results = new List <double>();
foreach (var field in fields)
{
switch (field.Type)
{
case FieldAggregationType.Average:
results.Add(aggregations.Average(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Distinct:
results.Add(aggregations.Cardinality(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Sum:
results.Add(aggregations.Sum(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Min:
results.Add(aggregations.Min(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Max:
results.Add(aggregations.Max(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Last:
// TODO: Populate with the last value.
break;
case FieldAggregationType.Term:
var termResult = aggregations.Terms(field.Key);
results.Add(termResult?.Items.Count > 0 ? termResult.Items[0].DocCount : 0);
break;
default:
throw new InvalidOperationException($"Unknown FieldAggregation type: {field.Type}");
}
}
return(results.ToArray());
}
public static int GetCardinality <T>(this AggregationsHelper aggs, Expression <Func <T, object> > fieldGetter, Expression <Func <T, object> > filterRule = null)
{
var aggName = fieldGetter.GetAggName(AggType.Cardinality);
ValueMetric itemsTerms;
if (filterRule == null)
{
itemsTerms = aggs.Cardinality(aggName);
}
else
{
var filterName = filterRule.GenerateFilterName();
var filterAgg = aggs.Filter(filterName);
itemsTerms = filterAgg.Cardinality(aggName);
}
if (itemsTerms?.Value == null)
{
throw new InvalidOperationException("Cardinality not available");
}
return((int)itemsTerms.Value.Value);
}
private double[] GetNumbers(AggregationsHelper aggregations, IEnumerable<FieldAggregation> fields) {
var results = new List<double>();
foreach (var field in fields) {
switch (field.Type) {
case FieldAggregationType.Average:
results.Add(aggregations.Average(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Distinct:
results.Add(aggregations.Cardinality(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Sum:
results.Add(aggregations.Sum(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Min:
results.Add(aggregations.Min(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Max:
results.Add(aggregations.Max(field.Key)?.Value.GetValueOrDefault() ?? 0);
break;
case FieldAggregationType.Last:
// TODO: Populate with the last value.
break;
case FieldAggregationType.Term:
var termResult = aggregations.Terms(field.Key);
results.Add(termResult?.Items.Count > 0 ? termResult.Items[0].DocCount : 0);
break;
default:
throw new InvalidOperationException($"Unknown FieldAggregation type: {field.Type}");
}
}
return results.ToArray();
}
