public static AggregateBucketResult[] CreateBucketResults(Aggregate[] aggregates)
{
if (aggregates.Length == 0)
{
return(null);
}
var aggResults = new AggregateBucketResult[aggregates.Length];
for (int i = 0; i < aggResults.Length; i++)
{
aggResults[i] = AggregateBucketResult.Factory(aggregates[i].GetAggregateReturnType(), aggregates[i].GetFuncName());
}
return(aggResults);
}
/// <summary>
/// Creates a new array of buckets that is used as key/value into a Dictionary inside the streamed version
/// of group by.
/// If the last array was inserted into the Dictionary, the function inits a brand-new one.
/// Otherwise it only actualises internal values of the last created one.
/// </summary>
public AggregateBucketResult[] Create(Element[] result)
{
if (this.lastWasInserted)
{
this.lastBucketsKeyValue = new AggregateBucketResult[this.keysCount + this.aggregates.Length];
// Init the aggregation funcs. result buckets.
for (int i = this.keysCount; i < this.keysCount + this.aggregates.Length; i++)
{
var agg = this.aggregates[i - this.keysCount];
this.lastBucketsKeyValue[i] = AggregateBucketResult.Factory(agg.GetAggregateReturnType(), agg.GetFuncName());
}
}
// Init key buckets.
for (int i = 0; i < keysCount; i++)
{
this.lastBucketsKeyValue[i] = factories[i].Create(this.lastWasInserted, result);
}
return(this.lastBucketsKeyValue);
}