Package org.elasticsearch.search.aggregations.metrics.min

Class MinAggregator

java.lang.Object

org.elasticsearch.search.aggregations.BucketCollector

org.elasticsearch.search.aggregations.Aggregator

org.elasticsearch.search.aggregations.AggregatorBase

org.elasticsearch.search.aggregations.metrics.MetricsAggregator

org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator

org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator.SingleValue

org.elasticsearch.search.aggregations.metrics.min.MinAggregator

All Implemented Interfaces:

java.io.Closeable, java.lang.AutoCloseable, org.apache.lucene.search.Collector, Releasable

public class MinAggregator
extends NumericMetricsAggregator.SingleValue

Nested Class Summary

Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator

NumericMetricsAggregator.MultiValue, NumericMetricsAggregator.SingleValue

Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.Aggregator

Aggregator.Parser, Aggregator.SubAggCollectionMode

Field Summary

Fields inherited from class org.elasticsearch.search.aggregations.AggregatorBase

collectableSubAggregators, context, DEFAULT_WEIGHT, name, parent, subAggregators

Fields inherited from class org.elasticsearch.search.aggregations.BucketCollector

NO_OP_COLLECTOR

Method Summary

Modifier and Type	Method	Description
InternalAggregation	buildAggregation(long bucket)	Build an aggregation for data that has been collected into bucket.
InternalAggregation	buildEmptyAggregation()	Build an empty aggregation.
void	doClose()	Release instance-specific data.
static java.lang.Number	findLeafMinValue(org.apache.lucene.index.LeafReader reader, java.lang.String fieldName, java.util.function.Function<byte[],java.lang.Number> converter)	Returns the minimum value indexed in the fieldName field or null if the value cannot be inferred from the indexed PointValues.
LeafBucketCollector	getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub)	Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.
static java.util.function.Function<byte[],java.lang.Number>	getPointReaderOrNull(SearchContext context, Aggregator parent, ValuesSourceConfig<ValuesSource.Numeric> config)	Returns a converter for point values if early termination is applicable to the context or null otherwise.
double	metric(long owningBucketOrd)
boolean	needsScores()	Most aggregators don't need scores, make sure to extend this method if your aggregator needs them.

Methods inherited from class org.elasticsearch.search.aggregations.AggregatorBase

addRequestCircuitBreakerBytes, buildEmptySubAggregations, close, context, doPostCollection, doPreCollection, getLeafCollector, metaData, name, parent, pipelineAggregators, postCollection, preCollection, preGetSubLeafCollectors, subAggregator, subAggregators, toString

Methods inherited from class org.elasticsearch.search.aggregations.Aggregator

descendsFromBucketAggregator

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Method Detail

needsScores

public boolean needsScores()

Description copied from class: AggregatorBase

Most aggregators don't need scores, make sure to extend this method if your aggregator needs them.

Specified by:

needsScores in interface org.apache.lucene.search.Collector

Overrides:

needsScores in class AggregatorBase

getLeafCollector

public LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx,
                                            LeafBucketCollector sub)
                                     throws java.io.IOException

Description copied from class: AggregatorBase

Get a LeafBucketCollector for the given ctx, which should delegate to the given collector.

Specified by:

getLeafCollector in class AggregatorBase

Throws:

java.io.IOException

metric

public double metric(long owningBucketOrd)

Specified by:

metric in class NumericMetricsAggregator.SingleValue

buildAggregation

public InternalAggregation buildAggregation(long bucket)

Description copied from class: Aggregator

Build an aggregation for data that has been collected into bucket.

Specified by:

buildAggregation in class Aggregator

buildEmptyAggregation

public InternalAggregation buildEmptyAggregation()

Description copied from class: Aggregator

Build an empty aggregation.

Specified by:

buildEmptyAggregation in class Aggregator

doClose

public void doClose()

Description copied from class: AggregatorBase

Release instance-specific data.

Overrides:

doClose in class AggregatorBase

getPointReaderOrNull

public static java.util.function.Function<byte[],java.lang.Number> getPointReaderOrNull(SearchContext context,
                                                                                              Aggregator parent,
                                                                                              ValuesSourceConfig<ValuesSource.Numeric> config)

Returns a converter for point values if early termination is applicable to the context or null otherwise.

Parameters:

context - The SearchContext of the aggregation.

parent - The parent aggregator.

config - The config for the values source metric.

findLeafMinValue

public static java.lang.Number findLeafMinValue(org.apache.lucene.index.LeafReader reader,
                                                java.lang.String fieldName,
                                                java.util.function.Function<byte[],java.lang.Number> converter)
                                         throws java.io.IOException

Returns the minimum value indexed in the fieldName field or null if the value cannot be inferred from the indexed PointValues.

Throws:

java.io.IOException