public class ReverseNestedAggregator extends SingleBucketAggregator implements ReaderContextAware
Modifier and Type | Class and Description |
---|---|
static class |
ReverseNestedAggregator.Factory |
Aggregator.BucketAggregationMode, Aggregator.Parser, Aggregator.SubAggCollectionMode
BucketCollector.BucketAnalysisCollector
bigArrays, bucketAggregationMode, COLLECT_MODE, collectableSubAggregators, context, depth, estimatedBucketCount, factories, name, parent, subAggregators
NO_OP_COLLECTOR
Constructor and Description |
---|
ReverseNestedAggregator(String name,
AggregatorFactories factories,
ObjectMapper objectMapper,
AggregationContext aggregationContext,
Aggregator parent) |
Modifier and Type | Method and Description |
---|---|
InternalAggregation |
buildAggregation(long owningBucketOrdinal) |
InternalAggregation |
buildEmptyAggregation() |
void |
collect(int childDoc,
long bucketOrd)
Called during the query phase, to collect & aggregate the given document.
|
protected void |
doClose()
Release instance-specific data.
|
void |
setNextReader(org.apache.lucene.index.AtomicReaderContext reader) |
shouldCollect
bucketAggregations, bucketDocCount, bucketEmptyAggregations, close, collectBucket, collectBucketNoCounts, collectExistingBucket, getDocCounts, incrementBucketDocCount, maxBucketOrd
bucketAggregationMode, buildEmptySubAggregations, context, depth, doPostCollection, estimatedBucketCount, gatherAnalysis, hasParentBucketAggregator, name, parent, postCollection, preCollection, runDeferredCollections, shouldDefer, subAggregator, subAggregators
wrap
public ReverseNestedAggregator(String name, AggregatorFactories factories, ObjectMapper objectMapper, AggregationContext aggregationContext, Aggregator parent)
public void setNextReader(org.apache.lucene.index.AtomicReaderContext reader)
setNextReader
in interface ReaderContextAware
public void collect(int childDoc, long bucketOrd) throws IOException
BucketCollector
collect
in class BucketCollector
bucketOrd
- The ordinal of the bucket this aggregator belongs to, assuming this aggregator is not a top level aggregator.
Typically, aggregators with #bucketAggregationMode
set to Aggregator.BucketAggregationMode.MULTI_BUCKETS
will heavily depend on this ordinal. Other aggregators may or may not use it and can see this ordinal as just
an extra information for the aggregation context. For top level aggregators, the ordinal will always be
equal to 0.IOException
public InternalAggregation buildAggregation(long owningBucketOrdinal)
buildAggregation
in class Aggregator
public InternalAggregation buildEmptyAggregation()
buildEmptyAggregation
in class Aggregator
protected void doClose()
Aggregator
doClose
in class Aggregator
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