Class NonCollectingMultiMetricAggregator
- All Implemented Interfaces:
Closeable,AutoCloseable,Releasable
NumericMetricsAggregator.SingleValue that is not collected, this can typically be used when running
an aggregation over a field that doesn't have a mapping.
see NonCollectingAggregator-
Nested Class Summary
Nested classes/interfaces inherited from class org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator
NumericMetricsAggregator.MultiDoubleValue, NumericMetricsAggregator.MultiValue, NumericMetricsAggregator.SingleDoubleValue, NumericMetricsAggregator.SingleValueNested classes/interfaces inherited from class org.elasticsearch.search.aggregations.Aggregator
Aggregator.BucketComparator, Aggregator.Parser, Aggregator.SubAggCollectionModeNested classes/interfaces inherited from class org.elasticsearch.search.aggregations.BucketCollector
BucketCollector.BucketCollectorWrapper -
Field Summary
Fields inherited from class org.elasticsearch.search.aggregations.AggregatorBase
collectableSubAggregators, context, DEFAULT_WEIGHT, name, parent, subAggregatorsFields inherited from class org.elasticsearch.search.aggregations.BucketCollector
NO_OP_BUCKET_COLLECTOR, NO_OP_COLLECTOR -
Constructor Summary
ConstructorsConstructorDescriptionNonCollectingMultiMetricAggregator(String name, AggregationContext context, Aggregator parent, InternalNumericMetricsAggregation.MultiValue emptyAggregation, Predicate<String> hasMetric, Map<String, Object> metadata) Build a NonCollectingMultiMetricAggregator forNumericMetricsAggregator.SingleValueaggregators. -
Method Summary
Modifier and TypeMethodDescriptionbuildAggregation(long owningBucketOrd) Build an aggregation for data that has been collected intoowningBucketOrd.Build an empty aggregation.Collect results for this leaf.booleandoubleMethods inherited from class org.elasticsearch.search.aggregations.metrics.NumericMetricsAggregator.MultiValue
bucketComparatorMethods inherited from class org.elasticsearch.search.aggregations.metrics.MetricsAggregator
buildAggregationsMethods inherited from class org.elasticsearch.search.aggregations.AggregatorBase
addRequestCircuitBreakerBytes, bigArrays, buildAggregations, buildEmptySubAggregations, checkRealMemoryCB, close, doClose, doPostCollection, doPreCollection, getLeafCollector, metadata, name, parent, pointReaderIfAvailable, postCollection, preCollection, preGetSubLeafCollectors, releaseAggregations, scoreMode, searcher, subAggregator, subAggregators, topLevelQuery, toStringMethods inherited from class org.elasticsearch.search.aggregations.Aggregator
buildTopLevel, collectDebugInfo, resolveSortPath, resolveSortPathOnValidAggMethods inherited from class org.elasticsearch.search.aggregations.BucketCollector
asCollector
-
Constructor Details
-
NonCollectingMultiMetricAggregator
public NonCollectingMultiMetricAggregator(String name, AggregationContext context, Aggregator parent, InternalNumericMetricsAggregation.MultiValue emptyAggregation, Predicate<String> hasMetric, Map<String, Object> metadata) throws IOExceptionBuild a NonCollectingMultiMetricAggregator forNumericMetricsAggregator.SingleValueaggregators.- Throws:
IOException
-
-
Method Details
-
getLeafCollector
public LeafBucketCollector getLeafCollector(AggregationExecutionContext aggCtx, LeafBucketCollector sub) Description copied from class:AggregatorBaseCollect results for this leaf.Most Aggregators will return a custom
LeafBucketCollectorthat collects document information for every hit. Callers of this method will make sure to callcollectfor every hit. So anyAggregatorthat returns a customer LeafBucketCollector from this method runs at bestO(hits)time. See thesumAggregator for a fairly strait forward example of this.Some Aggregators are able to correctly collect results on their own, without being iterated by the top level query or the rest of the aggregations framework. These aggregations collect what they need by calling methods on
LeafReaderContextand then they returnLeafBucketCollector.NO_OP_COLLECTORto signal that they've done their own collection. These aggregations can do better thanO(hits). See theminAggregator for an example of an aggregation that does this. It happens to run in constant time in some cases.In other cases
MinAggregatorcan't get correct results by taking the constant time path so instead it returns a customLeafBucketCollector. This is fairly common for aggregations that have these fast paths because most of these fast paths are only possible when the aggregation is at the root of the tree.Its also useful to look at the
filtersAggregator chooses whether or not it can use the fast path before building the Aggregator rather than on each leaf. Either is fine.- Specified by:
getLeafCollectorin classAggregatorBase
-
buildAggregation
Description copied from class:MetricsAggregatorBuild an aggregation for data that has been collected intoowningBucketOrd.- Specified by:
buildAggregationin classMetricsAggregator- Throws:
IOException
-
buildEmptyAggregation
Description copied from class:AggregatorBuild an empty aggregation.- Specified by:
buildEmptyAggregationin classAggregator
-
hasMetric
- Specified by:
hasMetricin classNumericMetricsAggregator.MultiValue
-
metric
- Specified by:
metricin classNumericMetricsAggregator.MultiValue
-