public class CardinalityAggregator extends NumericMetricsAggregator.SingleValue
NumericMetricsAggregator.MultiValue, NumericMetricsAggregator.SingleValue
Aggregator.Parser, Aggregator.SubAggCollectionMode
collectableSubAggregators, context, name, parent, subAggregators
NO_OP_COLLECTOR
Constructor and Description |
---|
CardinalityAggregator(String name,
ValuesSource valuesSource,
int precision,
ValueFormatter formatter,
AggregationContext context,
Aggregator parent,
List<PipelineAggregator> pipelineAggregators,
Map<String,Object> metaData) |
Modifier and Type | Method and Description |
---|---|
InternalAggregation |
buildAggregation(long owningBucketOrdinal)
Build an aggregation for data that has been collected into
bucket . |
InternalAggregation |
buildEmptyAggregation()
Build an empty aggregation.
|
protected void |
doClose()
Release instance-specific data.
|
protected void |
doPostCollection()
Can be overriden by aggregator implementation to be called back when the collection phase ends.
|
LeafBucketCollector |
getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx,
LeafBucketCollector sub)
Get a
LeafBucketCollector for the given ctx, which should
delegate to the given collector. |
double |
metric(long owningBucketOrd) |
boolean |
needsScores()
Most aggregators don't need scores, make sure to extend this method if
your aggregator needs them.
|
buildEmptySubAggregations, close, context, doPreCollection, getDeferringCollector, getLeafCollector, metaData, name, parent, pipelineAggregators, postCollection, preCollection, runDeferredCollections, shouldDefer, subAggregator, subAggregators, toString
descendsFromBucketAggregator
wrap
public CardinalityAggregator(String name, ValuesSource valuesSource, int precision, ValueFormatter formatter, AggregationContext context, Aggregator parent, List<PipelineAggregator> pipelineAggregators, Map<String,Object> metaData) throws IOException
IOException
public boolean needsScores()
AggregatorBase
needsScores
in interface org.apache.lucene.search.Collector
needsScores
in class AggregatorBase
public LeafBucketCollector getLeafCollector(org.apache.lucene.index.LeafReaderContext ctx, LeafBucketCollector sub) throws IOException
AggregatorBase
LeafBucketCollector
for the given ctx, which should
delegate to the given collector.getLeafCollector
in class AggregatorBase
IOException
protected void doPostCollection()
AggregatorBase
doPostCollection
in class AggregatorBase
public double metric(long owningBucketOrd)
metric
in class NumericMetricsAggregator.SingleValue
public InternalAggregation buildAggregation(long owningBucketOrdinal)
Aggregator
bucket
.buildAggregation
in class Aggregator
public InternalAggregation buildEmptyAggregation()
Aggregator
buildEmptyAggregation
in class Aggregator
protected void doClose()
AggregatorBase
doClose
in class AggregatorBase
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