/// <summary>
/// 获取聚合
/// </summary>
/// <param name="agg"></param>
/// <param name="ci"></param>
/// <returns></returns>
private IAggregationContainer Get_Agg(AggregationContainerDescriptor <T> agg, QueryDes qd)
{
var ls = qd.Aggs;
if (ls == null)
{
return(agg);
}
foreach (var s in ls)
{
switch (s)
{
case 1:
agg.Terms("m_area", t => t.Field("m_area").Size(33));
break;
case 2:
agg.Range("od_regm", r => r.Field("od_regm").Ranges(rs => rs.To(100), rs => rs.From(100).To(500), rs => rs.From(500).To(1000),
rs => rs.From(1000)));
break;
case 3:
agg.DateHistogram("od_regdate", t => t.Field("od_regdate").Interval(DateInterval.Year)
.MinimumDocumentCount(1).ExtendedBounds(new DateTime(1900, 1, 1), DateTime.Now));
break;
}
}
return(agg);
}
public static AggregationContainerDescriptor <T> IntoDateHistogram <T>(this AggregationContainerDescriptor <T> innerAggregation,
Expression <Func <T, object> > fieldGetter, DateInterval interval) where T : class
{
AggregationContainerDescriptor <T> v = new AggregationContainerDescriptor <T>();
var fieldName = GetName(fieldGetter);
v.DateHistogram(fieldName, dr =>
{
DateHistogramAggregationDescriptor <T> dateAggDesc = new DateHistogramAggregationDescriptor <T>();
dateAggDesc.Field(fieldGetter).Interval(interval);
return(dateAggDesc.Aggregations(x => innerAggregation));
});
return(v);
}
private static IAggregationContainer GetAggContainer(AggregationContainerDescriptor <Person> agg, SearchParam p)
{
if (p.aggs != null)
{
foreach (var a in p.aggs)
{
switch (a)
{
case PersonEnum.age:
agg.Range("age", r => r.Field(f => f.age).Ranges(rs => rs.To(20),
rs => rs.From(20).To(30),
rs => rs.From(30).To(40),
rs => rs.From(40).To(50),
rs => rs.From(50).To(60),
rs => rs.From(60)));
break;
case PersonEnum.graduate:
agg.DateHistogram("graduate", d => d.Field(f => f.graduate)
.Interval(DateInterval.Year)
.MinimumDocumentCount(1)
.ExtendedBounds("1980", "2050"));
break;
case PersonEnum.isMan:
agg.Terms("isMan", t => t.Field(f => f.isMan));
break;
case PersonEnum.city:
agg.Terms("city", t => t.Field(f => f.city));
break;
}
}
}
return(agg);
}
public static AggregationContainerDescriptor <T> DateHistogram <T>(this AggregationContainerDescriptor <T> agg,
Expression <Func <T, object> > fieldGetter, DateInterval dateInterval) where T : class
{
return(agg.DateHistogram(GetName(fieldGetter), x => x.Field(fieldGetter).Interval(dateInterval)));
}
