Module org.elasticsearch.server

Package org.elasticsearch.index.mapper

Class BlockSourceReader.DoublesBlockLoader

java.lang.Object

org.elasticsearch.index.mapper.BlockSourceReader.DoublesBlockLoader

All Implemented Interfaces:

BlockLoader

Enclosing class:

BlockSourceReader

public static class BlockSourceReader.DoublesBlockLoader
extends Object

Load doubles from _source.

Nested Class Summary

Nested classes/interfaces inherited from interface org.elasticsearch.index.mapper.BlockLoader

BlockLoader.AggregateMetricDoubleBuilder, BlockLoader.Block, BlockLoader.BlockFactory, BlockLoader.BooleanBuilder, BlockLoader.Builder, BlockLoader.BytesRefBuilder, BlockLoader.ColumnAtATimeReader, BlockLoader.ConditionalBlockLoader, BlockLoader.Docs, BlockLoader.DoubleBuilder, BlockLoader.ExponentialHistogramBuilder, BlockLoader.FloatBuilder, BlockLoader.IntBuilder, BlockLoader.LongBuilder, BlockLoader.LongRangeBuilder, BlockLoader.OptionalColumnAtATimeReader, BlockLoader.OptionalLengthReader, BlockLoader.Reader, BlockLoader.RowStrideReader, BlockLoader.SingletonBytesRefBuilder, BlockLoader.SingletonDoubleBuilder, BlockLoader.SingletonIntBuilder, BlockLoader.SingletonLongBuilder, BlockLoader.SingletonOrdinalsBuilder, BlockLoader.SortedSetOrdinalsBuilder, BlockLoader.StoredFields, BlockLoader.TDigestBuilder

Field Summary

Fields

Modifier and Type	Field	Description
protected final ValueFetcher	fetcher

Constructor Summary

Constructors

Constructor	Description
DoublesBlockLoader(ValueFetcher fetcher, BlockSourceReader.LeafIteratorLookup lookup)

Method Summary

Modifier and Type	Method	Description
BlockLoader.Builder	builder(BlockLoader.BlockFactory factory, int expectedCount)	The BlockLoader.Builder for data of this type.
final org.apache.lucene.util.IOFunction<CircuitBreaker,BlockLoader.ColumnAtATimeReader>	columnAtATimeReader(org.apache.lucene.index.LeafReaderContext context)	Build a column-at-a-time reader.
protected String	name()
final org.apache.lucene.index.SortedSetDocValues	ordinals(org.apache.lucene.index.LeafReaderContext context)	Load ordinals for the provided context.
final BlockLoader.RowStrideReader	rowStrideReader(CircuitBreaker breaker, org.apache.lucene.index.LeafReaderContext context)	Build a row-by-row reader.
BlockLoader.RowStrideReader	rowStrideReader(CircuitBreaker breaker, org.apache.lucene.index.LeafReaderContext context, org.apache.lucene.search.DocIdSetIterator iter)
final StoredFieldsSpec	rowStrideStoredFieldSpec()	What stored fields are needed by this reader.
final boolean	supportsOrdinals()	Does this loader support loading bytes via calling BlockLoader.ordinals(org.apache.lucene.index.LeafReaderContext).
final String	toString()

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, wait, wait, wait

Field Details

fetcher

protected final ValueFetcher fetcher

Constructor Details

DoublesBlockLoader

public DoublesBlockLoader(ValueFetcher fetcher,
 BlockSourceReader.LeafIteratorLookup lookup)

Method Details

builder

public BlockLoader.Builder builder(BlockLoader.BlockFactory factory,
 int expectedCount)

Description copied from interface: BlockLoader

The BlockLoader.Builder for data of this type. Called when loading from a multi-segment or unsorted block.

rowStrideReader

public BlockLoader.RowStrideReader rowStrideReader(CircuitBreaker breaker,
 org.apache.lucene.index.LeafReaderContext context,
 org.apache.lucene.search.DocIdSetIterator iter)

name

protected String name()

columnAtATimeReader

public final org.apache.lucene.util.IOFunction<CircuitBreaker,BlockLoader.ColumnAtATimeReader> columnAtATimeReader(org.apache.lucene.index.LeafReaderContext context)

Description copied from interface: BlockLoader

Build a column-at-a-time reader. May return null if the underlying storage needs to be loaded row-by-row. Callers should try this first, only falling back to BlockLoader.rowStrideReader(org.elasticsearch.common.breaker.CircuitBreaker, org.apache.lucene.index.LeafReaderContext) if this returns null. If this returns null then BlockLoader.rowStrideReader(org.elasticsearch.common.breaker.CircuitBreaker, org.apache.lucene.index.LeafReaderContext) may not.

Specified by:

columnAtATimeReader in interface BlockLoader

rowStrideStoredFieldSpec

public final StoredFieldsSpec rowStrideStoredFieldSpec()

Description copied from interface: BlockLoader

What stored fields are needed by this reader.

Specified by:

rowStrideStoredFieldSpec in interface BlockLoader

supportsOrdinals

public final boolean supportsOrdinals()

Description copied from interface: BlockLoader

Does this loader support loading bytes via calling BlockLoader.ordinals(org.apache.lucene.index.LeafReaderContext).

Specified by:

supportsOrdinals in interface BlockLoader

ordinals

public final org.apache.lucene.index.SortedSetDocValues ordinals(org.apache.lucene.index.LeafReaderContext context)

Description copied from interface: BlockLoader

Load ordinals for the provided context.

Specified by:

ordinals in interface BlockLoader

rowStrideReader

public final BlockLoader.RowStrideReader rowStrideReader(CircuitBreaker breaker,
 org.apache.lucene.index.LeafReaderContext context)
                                                  throws IOException

Description copied from interface: BlockLoader

Build a row-by-row reader. May return null if the underlying storage prefers to be loaded column-at-a-time. Callers should try BlockLoader.columnAtATimeReader(org.apache.lucene.index.LeafReaderContext) first, only falling back to this if BlockLoader.columnAtATimeReader(org.apache.lucene.index.LeafReaderContext) returns null. This may not return null if BlockLoader.columnAtATimeReader(org.apache.lucene.index.LeafReaderContext) does.

Specified by:

rowStrideReader in interface BlockLoader

Throws:

IOException

toString

public final String toString()

Overrides:

toString in class Object