org.elasticsearch.search.aggregations.bucket.histogram

Interface HistogramFactory

All Known Implementing Classes:

InternalDateHistogram, InternalHistogram

public interface HistogramFactory

Implemented by histogram aggregations and used by pipeline aggregations to insert buckets.

Method Summary

Modifier and Type	Method and Description
InternalAggregation	createAggregation(java.util.List<MultiBucketsAggregation.Bucket> buckets) Create an InternalAggregation object that wraps the given buckets.
MultiBucketsAggregation.Bucket	createBucket(java.lang.Number key, long docCount, InternalAggregations aggregations) Create a MultiBucketsAggregation.Bucket object that wraps the given key, document count and aggregations.
java.lang.Number	getKey(MultiBucketsAggregation.Bucket bucket) Get the key for the given bucket.
java.lang.Number	nextKey(java.lang.Number key) Given a key returned by getKey(org.elasticsearch.search.aggregations.bucket.MultiBucketsAggregation.Bucket), compute the lowest key that is greater than it.

Method Detail

getKey

java.lang.Number getKey(MultiBucketsAggregation.Bucket bucket)

Get the key for the given bucket. Date histograms must return the number of millis since Epoch of the bucket key while numeric histograms must return the double value of the key.

nextKey

java.lang.Number nextKey(java.lang.Number key)

Given a key returned by getKey(org.elasticsearch.search.aggregations.bucket.MultiBucketsAggregation.Bucket), compute the lowest key that is greater than it.

createAggregation

InternalAggregation createAggregation(java.util.List<MultiBucketsAggregation.Bucket> buckets)

Create an InternalAggregation object that wraps the given buckets.

createBucket

MultiBucketsAggregation.Bucket createBucket(java.lang.Number key,
                                            long docCount,
                                            InternalAggregations aggregations)

Create a MultiBucketsAggregation.Bucket object that wraps the given key, document count and aggregations.