Class AggregatorFactory
- java.lang.Object
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- org.elasticsearch.search.aggregations.AggregatorFactory
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- Direct Known Subclasses:
AdjacencyMatrixAggregatorFactory
,FilterAggregatorFactory
,FiltersAggregatorFactory
,GlobalAggregatorFactory
,MultiValuesSourceAggregatorFactory
,NestedAggregatorFactory
,ReverseNestedAggregatorFactory
,SamplerAggregatorFactory
,SignificantTextAggregatorFactory
,ValuesSourceAggregatorFactory
public abstract class AggregatorFactory extends java.lang.Object
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Nested Class Summary
Nested Classes Modifier and Type Class Description static class
AggregatorFactory.MultiBucketAggregatorWrapper
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Field Summary
Fields Modifier and Type Field Description protected SearchContext
context
protected AggregatorFactories
factories
protected java.util.Map<java.lang.String,java.lang.Object>
metaData
protected java.lang.String
name
protected AggregatorFactory
parent
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Constructor Summary
Constructors Constructor Description AggregatorFactory(java.lang.String name, SearchContext context, AggregatorFactory parent, AggregatorFactories.Builder subFactoriesBuilder, java.util.Map<java.lang.String,java.lang.Object> metaData)
Constructs a new aggregator factory.
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Method Summary
Modifier and Type Method Description protected static Aggregator
asMultiBucketAggregator(AggregatorFactory factory, SearchContext context, Aggregator parent)
Utility method.Aggregator
create(Aggregator parent, boolean collectsFromSingleBucket)
Creates the aggregatorprotected abstract Aggregator
createInternal(Aggregator parent, boolean collectsFromSingleBucket, java.util.List<PipelineAggregator> pipelineAggregators, java.util.Map<java.lang.String,java.lang.Object> metaData)
void
doValidate()
AggregatorFactory
getParent()
java.lang.String
name()
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Field Detail
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name
protected final java.lang.String name
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parent
protected final AggregatorFactory parent
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factories
protected final AggregatorFactories factories
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metaData
protected final java.util.Map<java.lang.String,java.lang.Object> metaData
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context
protected final SearchContext context
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Constructor Detail
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AggregatorFactory
public AggregatorFactory(java.lang.String name, SearchContext context, AggregatorFactory parent, AggregatorFactories.Builder subFactoriesBuilder, java.util.Map<java.lang.String,java.lang.Object> metaData) throws java.io.IOException
Constructs a new aggregator factory.- Parameters:
name
- The aggregation name- Throws:
java.io.IOException
- if an error occurs creating the factory
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Method Detail
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name
public java.lang.String name()
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doValidate
public void doValidate()
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createInternal
protected abstract Aggregator createInternal(Aggregator parent, boolean collectsFromSingleBucket, java.util.List<PipelineAggregator> pipelineAggregators, java.util.Map<java.lang.String,java.lang.Object> metaData) throws java.io.IOException
- Throws:
java.io.IOException
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create
public final Aggregator create(Aggregator parent, boolean collectsFromSingleBucket) throws java.io.IOException
Creates the aggregator- Parameters:
parent
- The parent aggregator (if this is a top level factory, the parent will benull
)collectsFromSingleBucket
- If true then the created aggregator will only be collected with0
as a bucket ordinal. Some factories can take advantage of this in order to return more optimized implementations.- Returns:
- The created aggregator
- Throws:
java.io.IOException
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getParent
public AggregatorFactory getParent()
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asMultiBucketAggregator
protected static Aggregator asMultiBucketAggregator(AggregatorFactory factory, SearchContext context, Aggregator parent) throws java.io.IOException
Utility method. Given anAggregatorFactory
that createsAggregator
s that only know how to collect bucket0
, this returns an aggregator that can collect any bucket.- Throws:
java.io.IOException
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