Package org.apache.druid.segment.incremental

Class AppendableIndexBuilder

java.lang.Object

org.apache.druid.segment.incremental.AppendableIndexBuilder

Direct Known Subclasses:

OnheapIncrementalIndex.Builder

public abstract class AppendableIndexBuilder
extends Object

Field Summary

Fields

Modifier and Type	Field	Description
protected IncrementalIndexSchema	incrementalIndexSchema
protected final Logger	log
protected long	maxBytesInMemory
protected int	maxRowCount
protected boolean	preserveExistingMetrics

Constructor Summary

Constructors

Constructor	Description
AppendableIndexBuilder()

Method Summary

Modifier and Type	Method	Description
final IncrementalIndex	build()
protected abstract IncrementalIndex	buildInner()
AppendableIndexBuilder	setIndexSchema(IncrementalIndexSchema incrementalIndexSchema)
AppendableIndexBuilder	setMaxBytesInMemory(long maxBytesInMemory)
AppendableIndexBuilder	setMaxRowCount(int maxRowCount)
AppendableIndexBuilder	setPreserveExistingMetrics(boolean preserveExistingMetrics)
AppendableIndexBuilder	setSimpleTestingIndexSchema(Boolean rollup, Boolean preserveExistingMetrics, AggregatorFactory... metrics)	A helper method to set a simple index schema with controllable metrics and rollup, and default values for the other parameters.
AppendableIndexBuilder	setSimpleTestingIndexSchema(AggregatorFactory... metrics)	A helper method to set a simple index schema with only metrics and default values for the other parameters.
void	validate()

Methods inherited from class java.lang.Object

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

Field Details

incrementalIndexSchema

@Nullable
protected IncrementalIndexSchema incrementalIndexSchema

maxRowCount

protected int maxRowCount

maxBytesInMemory

protected long maxBytesInMemory

preserveExistingMetrics

protected boolean preserveExistingMetrics

log

protected final Logger log

Constructor Details

AppendableIndexBuilder

public AppendableIndexBuilder()

Method Details

setIndexSchema

public AppendableIndexBuilder setIndexSchema(IncrementalIndexSchema incrementalIndexSchema)

setSimpleTestingIndexSchema

public AppendableIndexBuilder setSimpleTestingIndexSchema(AggregatorFactory... metrics)

A helper method to set a simple index schema with only metrics and default values for the other parameters. Note that this method is normally used for testing and benchmarking; it is unlikely that you would use it in production settings.

Parameters:

metrics - variable array of AggregatorFactory metrics

Returns:

this

setSimpleTestingIndexSchema

public AppendableIndexBuilder setSimpleTestingIndexSchema(@Nullable
 Boolean rollup,
 @Nullable
 Boolean preserveExistingMetrics,
 AggregatorFactory... metrics)

A helper method to set a simple index schema with controllable metrics and rollup, and default values for the other parameters. Note that this method is normally used for testing and benchmarking; it is unlikely that you would use it in production settings.

Parameters:

metrics - variable array of AggregatorFactory metrics

Returns:

this

setMaxRowCount

public AppendableIndexBuilder setMaxRowCount(int maxRowCount)

setMaxBytesInMemory

public AppendableIndexBuilder setMaxBytesInMemory(long maxBytesInMemory)

setPreserveExistingMetrics

public AppendableIndexBuilder setPreserveExistingMetrics(boolean preserveExistingMetrics)

validate

public void validate()

build

public final IncrementalIndex build()

buildInner

protected abstract IncrementalIndex buildInner()