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Bucket Selector Aggregation Usageedit
Fluent DSL exampleedit
s => s
.Size(0)
.Aggregations(a => a
.DateHistogram("projects_started_per_month", dh => dh
.Field(p => p.StartedOn)
.Interval(DateInterval.Month)
.Aggregations(aa => aa
.Sum("commits", sm => sm
.Field(p => p.NumberOfCommits)
)
.BucketSelector("commits_bucket_filter", bs => bs
.BucketsPath(bp => bp
.Add("totalCommits", "commits")
)
.Script(ss => ss.Inline("totalCommits >= 500").Lang("groovy"))
)
)
)
)
Object Initializer syntax exampleedit
new SearchRequest<Project>()
{
Size = 0,
Aggregations = new DateHistogramAggregation("projects_started_per_month")
{
Field = "startedOn",
Interval = DateInterval.Month,
Aggregations =
new SumAggregation("commits", "numberOfCommits") &&
new BucketSelectorAggregation("commits_bucket_filter", new MultiBucketsPath
{
{ "totalCommits", "commits" },
})
{
Script = new InlineScript("totalCommits >= 500") { Lang = "groovy" }
}
}
}
Example json output.
{
"size": 0,
"aggs": {
"projects_started_per_month": {
"date_histogram": {
"field": "startedOn",
"interval": "month"
},
"aggs": {
"commits": {
"sum": {
"field": "numberOfCommits"
}
},
"commits_bucket_filter": {
"bucket_selector": {
"buckets_path": {
"totalCommits": "commits"
},
"script": {
"inline": "totalCommits >= 500",
"lang": "groovy"
}
}
}
}
}
}
}
Handling Responsesedit
response.ShouldBeValid();
var projectsPerMonth = response.Aggs.DateHistogram("projects_started_per_month");
projectsPerMonth.Should().NotBeNull();
projectsPerMonth.Buckets.Should().NotBeNull();
projectsPerMonth.Buckets.Count.Should().BeGreaterThan(0);
foreach (var item in projectsPerMonth.Buckets)
{
var commits = item.Sum("commits");
commits.Should().NotBeNull();
commits.Value.Should().BeGreaterOrEqualTo(500);
}