Module org.elasticsearch.server

Package org.elasticsearch.index.mapper.blockloader

Class DelegatingBlockLoader

java.lang.Object

org.elasticsearch.index.mapper.blockloader.DelegatingBlockLoader

All Implemented Interfaces:

BlockLoader

public abstract class DelegatingBlockLoader
extends Object
implements BlockLoader

Delegates to other BlockLoader.

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 BlockLoader	delegate

Constructor Summary

Constructors

Modifier	Constructor	Description
protected	DelegatingBlockLoader(BlockLoader delegate)

Method Summary

Modifier and Type	Method	Description
BlockLoader.Builder	builder(BlockLoader.BlockFactory factory, int expectedCount)	The BlockLoader.Builder for data of this type.
org.apache.lucene.util.IOFunction<CircuitBreaker,BlockLoader.ColumnAtATimeReader>	columnAtATimeReader(org.apache.lucene.index.LeafReaderContext context)	Build a column-at-a-time reader.
abstract String	delegatingTo()
org.apache.lucene.index.SortedSetDocValues	ordinals(org.apache.lucene.index.LeafReaderContext context)	Load ordinals for the provided context.
BlockLoader.RowStrideReader	rowStrideReader(CircuitBreaker breaker, org.apache.lucene.index.LeafReaderContext context)	Build a row-by-row reader.
StoredFieldsSpec	rowStrideStoredFieldSpec()	What stored fields are needed by this reader.
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

delegate

protected final BlockLoader delegate

Constructor Details

DelegatingBlockLoader

protected DelegatingBlockLoader(BlockLoader delegate)

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.

Specified by:

builder in interface BlockLoader

columnAtATimeReader

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

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

Throws:

IOException

rowStrideReader

public 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

rowStrideStoredFieldSpec

public StoredFieldsSpec rowStrideStoredFieldSpec()

Description copied from interface: BlockLoader

What stored fields are needed by this reader.

Specified by:

rowStrideStoredFieldSpec in interface BlockLoader

supportsOrdinals

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

Description copied from interface: BlockLoader

Load ordinals for the provided context.

Specified by:

ordinals in interface BlockLoader

Throws:

IOException

delegatingTo

public abstract String delegatingTo()

toString

public final String toString()

Overrides:

toString in class Object