public static AggregationBase GetDefaultAggregation(this GroupNode node, IQueryVisitorContext context)
{
var elasticContext = context as IElasticQueryVisitorContext;
if (elasticContext == null)
{
throw new ArgumentException("Context must be of type IElasticQueryVisitorContext", nameof(context));
}
if (!node.HasParens || String.IsNullOrEmpty(node.Field) || node.Left != null)
{
return(null);
}
string field = elasticContext.MappingResolver.GetAggregationsFieldName(node.Field);
var property = elasticContext.MappingResolver.GetMappingProperty(field, true);
switch (node.GetOperationType())
{
case AggregationType.DateHistogram:
return(GetDateHistogramAggregation("date_" + node.GetOriginalField(), field, node.UnescapedProximity, node.UnescapedBoost ?? node.GetTimeZone(elasticContext.DefaultTimeZone), context));
case AggregationType.Histogram:
return(GetHistogramAggregation("histogram_" + node.GetOriginalField(), field, node.UnescapedProximity, node.UnescapedBoost, context));
case AggregationType.GeoHashGrid:
var precision = GeoHashPrecision.Precision1;
if (!String.IsNullOrEmpty(node.UnescapedProximity))
{
Enum.TryParse(node.UnescapedProximity, out precision);
}
return(new GeoHashGridAggregation("geogrid_" + node.GetOriginalField())
{
Field = field,
Precision = precision,
Aggregations = new AverageAggregation("avg_lat", null)
{
Script = new InlineScript($"doc['{node.Field}'].lat")
} && new AverageAggregation("avg_lon", null)
{
Script = new InlineScript($"doc['{node.Field}'].lon")
}
});
case AggregationType.Terms:
var agg = new TermsAggregation("terms_" + node.GetOriginalField())
{
Field = field,
Size = node.GetProximityAsInt32(),
MinimumDocumentCount = node.GetBoostAsInt32(),
Meta = new Dictionary <string, object> {
{ "@field_type", property?.Type }
}
};
if (agg.Size.HasValue && (agg.Size * 1.5 + 10) > MAX_BUCKET_SIZE)
{
agg.ShardSize = Math.Max((int)agg.Size, MAX_BUCKET_SIZE);
}
return(agg);
case AggregationType.TopHits:
return(new TopHitsAggregation("tophits")
{
Size = node.GetProximityAsInt32()
});
}
return(null);
}
public static AggregationBase GetDefaultAggregation(this GroupNode node, IQueryVisitorContext context)
{
var elasticContext = context as IElasticQueryVisitorContext;
if (elasticContext == null)
{
throw new ArgumentException("Context must be of type IElasticQueryVisitorContext", nameof(context));
}
if (!node.HasParens || String.IsNullOrEmpty(node.Field) || node.Left != null)
{
return(null);
}
string field = elasticContext.GetNonAnalyzedFieldName(node.Field);
var mapping = elasticContext.GetPropertyMapping(field);
switch (node.GetOperationType())
{
case AggregationType.DateHistogram:
return(GetDateHistogramAggregation("date_" + node.GetOriginalField(), field, node.Proximity, node.UnescapedBoost, context));
case AggregationType.Histogram:
return(GetHistogramAggregation("histogram_" + node.GetOriginalField(), field, node.Proximity, node.UnescapedBoost, context));
case AggregationType.GeoHashGrid:
var precision = GeoHashPrecision.Precision1;
if (!String.IsNullOrEmpty(node.Proximity))
{
Enum.TryParse(node.Proximity, out precision);
}
return(new GeoHashGridAggregation("geogrid_" + node.GetOriginalField())
{
Field = field,
Precision = precision,
Aggregations = new AverageAggregation("avg_lat", null)
{
Script = new InlineScript($"doc['{node.Field}'].lat")
} && new AverageAggregation("avg_lon", null)
{
Script = new InlineScript($"doc['{node.Field}'].lon")
}
});
case AggregationType.Terms:
return(new TermsAggregation("terms_" + node.GetOriginalField())
{
Field = field, Size = node.GetProximityAsInt32(), MinimumDocumentCount = node.GetBoostAsInt32(), Meta = new Dictionary <string, object> {
{ "@field_type", mapping?.Type?.ToString() }
}
});
}
return(null);
}