Uses of Annotation Type
org.apache.druid.guice.annotations.ExtensionPoint

Packages that use ExtensionPoint

Package	Description
org.apache.druid.cli
org.apache.druid.data.input
org.apache.druid.data.input.impl
org.apache.druid.initialization
org.apache.druid.java.util.common.parsers
org.apache.druid.metadata
org.apache.druid.query
org.apache.druid.query.aggregation
org.apache.druid.query.context
org.apache.druid.query.extraction
org.apache.druid.query.groupby
org.apache.druid.query.timeseries
org.apache.druid.query.topn
org.apache.druid.segment
org.apache.druid.segment.column
org.apache.druid.segment.data
org.apache.druid.segment.incremental
org.apache.druid.segment.loading
org.apache.druid.segment.serde
org.apache.druid.segment.transform
org.apache.druid.tasklogs

Uses of ExtensionPoint in org.apache.druid.cli

Classes in org.apache.druid.cli with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	CliCommandCreator	An extension point to create a custom Druid service.

Uses of ExtensionPoint in org.apache.druid.data.input

Classes in org.apache.druid.data.input with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	Committer	Committer includes a Runnable and a Jackson-serialized metadata object containing the offset
interface	InputRow	An InputRow is the interface definition of an event being input into the data ingestion layer.

Uses of ExtensionPoint in org.apache.druid.data.input.impl

Classes in org.apache.druid.data.input.impl with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	InputRowParser<T>	Deprecated.
class	ParseSpec	Deprecated.

Uses of ExtensionPoint in org.apache.druid.initialization

Classes in org.apache.druid.initialization with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	DruidModule	A Guice module which also provides Jackson modules.

Uses of ExtensionPoint in org.apache.druid.java.util.common.parsers

Classes in org.apache.druid.java.util.common.parsers with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
static interface	ObjectFlatteners.FlattenerMaker<T>

Uses of ExtensionPoint in org.apache.druid.metadata

Classes in org.apache.druid.metadata with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	DynamicConfigProvider<T>	This is used to get [secure] configuration in various places in an extensible way.
interface	PasswordProvider	Deprecated.

Uses of ExtensionPoint in org.apache.druid.query

Classes in org.apache.druid.query with annotations of type ExtensionPoint

Modifier and Type	Class	Description
class	BaseQuery<T>
interface	CacheStrategy<T,CacheType,QueryType extends Query<T>>	Handles caching-related tasks for a particular query type.
interface	Query<T>
interface	QueryMetrics<QueryType extends Query<?>>	Abstraction wrapping ServiceMetricEvent.Builder and allowing to control what metrics are actually emitted, what dimensions do they have, etc.
interface	QueryProcessingPool	This class implements the logic of how units of query execution run concurrently.
interface	QueryRunner<T>
interface	QueryRunnerFactory<T,QueryType extends Query<T>>	An interface that defines the nitty gritty implementation details of a Query on a Segment
class	QueryToolChest<ResultType,QueryType extends Query<ResultType>>	The broker-side (also used by server in some cases) API for a specific Query type.

Uses of ExtensionPoint in org.apache.druid.query.aggregation

Classes in org.apache.druid.query.aggregation with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	AggregateCombiner<T>	AggregateCombiner is used to fold rollup aggregation results from serveral "rows" of different indexes during index merging (see IndexMerger).
interface	Aggregator	An Aggregator is an object that can aggregate metrics.
class	AggregatorFactory	AggregatorFactory is a strategy (in the terms of Design Patterns) that represents column aggregation, e.g.
interface	BufferAggregator	A BufferAggregator is an object that can aggregate metrics into a ByteBuffer.
class	NullableNumericAggregatorFactory<T extends BaseNullableColumnValueSelector>	Abstract superclass for null-aware numeric aggregators.
interface	PostAggregator	Functionally similar to an Aggregator.

Uses of ExtensionPoint in org.apache.druid.query.context

Classes in org.apache.druid.query.context with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
static interface	ResponseContext.Key	The base interface of a response context key.

Uses of ExtensionPoint in org.apache.druid.query.extraction

Classes in org.apache.druid.query.extraction with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	ExtractionFn	An ExtractionFn is a function that can be used to transform the values of a column (typically a dimension).

Uses of ExtensionPoint in org.apache.druid.query.groupby

Classes in org.apache.druid.query.groupby with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	GroupByQueryMetrics	Specialization of QueryMetrics for GroupByQuery.

Uses of ExtensionPoint in org.apache.druid.query.timeseries

Classes in org.apache.druid.query.timeseries with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	TimeseriesQueryMetrics	Specialization of QueryMetrics for TimeseriesQuery.

Uses of ExtensionPoint in org.apache.druid.query.topn

Classes in org.apache.druid.query.topn with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	TopNQueryMetrics	Specialization of QueryMetrics for TopNQuery.

Uses of ExtensionPoint in org.apache.druid.segment

Classes in org.apache.druid.segment with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	BaseDoubleColumnValueSelector	Double value selecting polymorphic "part" of the ColumnValueSelector interface.
interface	BaseFloatColumnValueSelector	Float value selecting polymorphic "part" of the ColumnValueSelector interface.
interface	BaseLongColumnValueSelector	Long value selecting polymorphic "part" of the ColumnValueSelector interface.
interface	BaseObjectColumnValueSelector<T>	Object value selecting polymorphic "part" of the ColumnValueSelector interface.
interface	ColumnValueSelector<T>	Base type for interfaces that manage column value selection, e.g.
interface	GenericColumnSerializer<T>	GenericColumnSerializer can be implemented in custom aggregator extensions that would like to take full control of column serialization.

Uses of ExtensionPoint in org.apache.druid.segment.column

Classes in org.apache.druid.segment.column with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	ComplexColumn	This interface represents a complex column and can be implemented by druid extension writer of a custom column with arbitrary serialization instead of a custom column that serializes rows of objects serialized using GenericIndexed class which is default implementation of "writeToXXX" methods in ComplexColumnSerializer.

Uses of ExtensionPoint in org.apache.druid.segment.data

Classes in org.apache.druid.segment.data with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	ObjectStrategy<T>

Uses of ExtensionPoint in org.apache.druid.segment.incremental

Classes in org.apache.druid.segment.incremental with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	RowIngestionMeters	A collection of meters for row ingestion stats, with support for moving average calculations.

Uses of ExtensionPoint in org.apache.druid.segment.loading

Classes in org.apache.druid.segment.loading with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	DataSegmentArchiver	DataSegmentArchiver knows how to archive segments.
interface	DataSegmentKiller	DataSegmentKiller knows how to kill segments from the Druid system.
interface	DataSegmentMover	DataSegmentMover knows how to move the segment location from one to another.
interface	DataSegmentPusher
interface	LoadSpec	A means of pulling segment files into a destination directory
interface	URIDataPuller	A URIDataPuller has handlings for URI based data

Uses of ExtensionPoint in org.apache.druid.segment.serde

Classes in org.apache.druid.segment.serde with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	ComplexMetricExtractor<T>
class	ComplexMetricSerde

Uses of ExtensionPoint in org.apache.druid.segment.transform

Classes in org.apache.druid.segment.transform with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	Transform	A row transform that is part of a TransformSpec.

Uses of ExtensionPoint in org.apache.druid.tasklogs

Classes in org.apache.druid.tasklogs with annotations of type ExtensionPoint

Modifier and Type	Interface	Description
interface	TaskLogKiller	Cleans up stale task logs from deep storage.
interface	TaskLogPusher	Something that knows how to persist local task logs to some form of long-term storage.
interface	TaskLogs
interface	TaskLogStreamer	Something that knows how to stream logs for tasks.
interface	TaskPayloadManager	Something that knows how to push a task payload before it is run to somewhere a ingestion worker will be able to stream the task payload from when trying to run the task.