Module org.elasticsearch.server
Class InternalCardinality
java.lang.Object
org.elasticsearch.search.aggregations.InternalAggregation
org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation
org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation.SingleValue
org.elasticsearch.search.aggregations.metrics.InternalCardinality
- All Implemented Interfaces:
NamedWriteable,Writeable,Aggregation,Cardinality,NumericMetricsAggregation,NumericMetricsAggregation.SingleValue,ToXContent,ToXContentFragment
public class InternalCardinality
extends InternalNumericMetricsAggregation.SingleValue
implements Cardinality
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Nested Class Summary
Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation
InternalNumericMetricsAggregation.MultiValue, InternalNumericMetricsAggregation.SingleValueNested classes/interfaces inherited from interface org.elasticsearch.search.aggregations.Aggregation
Aggregation.CommonFieldsNested classes/interfaces inherited from interface org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregation
NumericMetricsAggregation.MultiValue, NumericMetricsAggregation.SingleValueNested classes/interfaces inherited from interface org.elasticsearch.xcontent.ToXContent
ToXContent.DelegatingMapParams, ToXContent.MapParams, ToXContent.ParamsNested classes/interfaces inherited from interface org.elasticsearch.common.io.stream.Writeable
Writeable.Reader<V>, Writeable.Writer<V> -
Field Summary
Fields inherited from class org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation
formatFields inherited from class org.elasticsearch.search.aggregations.InternalAggregation
metadata, nameFields inherited from interface org.elasticsearch.search.aggregations.Aggregation
TYPED_KEYS_DELIMITERFields inherited from interface org.elasticsearch.xcontent.ToXContent
EMPTY, EMPTY_PARAMS -
Constructor Summary
Constructors -
Method Summary
Modifier and TypeMethodDescriptionprotected voiddoWriteTo(StreamOutput out) doXContentBody(XContentBuilder builder, ToXContent.Params params) booleanfinalizeSampling(SamplingContext samplingContext) The counts created in cardinality do not lend themselves to be automatically scaled.protected AggregatorReducergetLeaderReducer(AggregationReduceContext reduceContext, int size) Return an object that Reduces several aggregations to a single one.longgetValue()The number of unique terms.Returns the name of the writeable objectinthashCode()doublevalue()Methods inherited from class org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation.SingleValue
getProperty, getValueAsString, sortValueMethods inherited from class org.elasticsearch.search.aggregations.metrics.InternalNumericMetricsAggregation
mustReduceOnSingleInternalAgg, sortValueMethods inherited from class org.elasticsearch.search.aggregations.InternalAggregation
canLeadReduction, copyWithRewritenBuckets, forEachBucket, getMetadata, getName, getProperty, getReducer, getType, readSize, reducePipelines, toString, toXContent, writeSize, writeToMethods inherited from class java.lang.Object
clone, finalize, getClass, notify, notifyAll, wait, wait, waitMethods inherited from interface org.elasticsearch.search.aggregations.Aggregation
getMetadata, getName, getTypeMethods inherited from interface org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregation.SingleValue
getValueAsStringMethods inherited from interface org.elasticsearch.xcontent.ToXContent
toXContentMethods inherited from interface org.elasticsearch.xcontent.ToXContentFragment
isFragment
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Constructor Details
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InternalCardinality
Read from a stream.- Throws:
IOException
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Method Details
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doWriteTo
- Specified by:
doWriteToin classInternalAggregation- Throws:
IOException
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getWriteableName
Description copied from interface:NamedWriteableReturns the name of the writeable object- Specified by:
getWriteableNamein interfaceNamedWriteable
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value
public double value()- Specified by:
valuein interfaceNumericMetricsAggregation.SingleValue
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getValue
public long getValue()Description copied from interface:CardinalityThe number of unique terms.- Specified by:
getValuein interfaceCardinality
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getCounts
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getLeaderReducer
Description copied from class:InternalAggregationReturn an object that Reduces several aggregations to a single one. This method is called whenInternalAggregation.canLeadReduction()returns true and expects an reducer that produces the right result.- Specified by:
getLeaderReducerin classInternalAggregation
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doXContentBody
public XContentBuilder doXContentBody(XContentBuilder builder, ToXContent.Params params) throws IOException - Specified by:
doXContentBodyin classInternalAggregation- Throws:
IOException
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hashCode
public int hashCode()- Overrides:
hashCodein classInternalNumericMetricsAggregation
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equals
- Overrides:
equalsin classInternalNumericMetricsAggregation
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finalizeSampling
The counts created in cardinality do not lend themselves to be automatically scaled. Consequently, when finalizing the sampling, nothing is changed and the same object is returned- Overrides:
finalizeSamplingin classInternalAggregation- Parameters:
samplingContext- the current sampling context- Returns:
- new aggregation with the sampling context applied, could be the same aggregation instance if nothing needs to be done
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