Uses of Package
io.druid.segment

Packages that use io.druid.segment

Package	Description
io.druid.query
io.druid.query.aggregation
io.druid.query.aggregation.cardinality
io.druid.query.aggregation.cardinality.types
io.druid.query.aggregation.first
io.druid.query.aggregation.hyperloglog
io.druid.query.aggregation.last
io.druid.query.datasourcemetadata
io.druid.query.dimension
io.druid.query.filter
io.druid.query.groupby
io.druid.query.groupby.epinephelinae
io.druid.query.groupby.epinephelinae.column
io.druid.query.groupby.strategy
io.druid.query.metadata
io.druid.query.scan
io.druid.query.search
io.druid.query.select
io.druid.query.timeboundary
io.druid.query.timeseries
io.druid.query.topn
io.druid.query.topn.types
io.druid.segment
io.druid.segment.column
io.druid.segment.data
io.druid.segment.filter
io.druid.segment.historical
io.druid.segment.incremental
io.druid.segment.loading
io.druid.segment.serde
io.druid.segment.virtual

Classes in io.druid.segment used by io.druid.query

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
Cursor
ReferenceCountingSegment ReferenceCountingSegment allows to call ReferenceCountingSegment.close() before some other "users", which called ReferenceCountingSegment.increment(), has not called ReferenceCountingSegment.decrement() yet, and the wrapped Segment won't be actually closed until that.
Segment
StorageAdapter
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.aggregation

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector
ObjectColumnSelector

Classes in io.druid.segment used by io.druid.query.aggregation.cardinality

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
ObjectColumnSelector

Classes in io.druid.segment used by io.druid.query.aggregation.cardinality.types

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.query.aggregation.first

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.query.aggregation.hyperloglog

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
GenericColumnSerializer
ObjectColumnSelector

Classes in io.druid.segment used by io.druid.query.aggregation.last

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.query.datasourcemetadata

Class and Description
Segment

Classes in io.druid.segment used by io.druid.query.dimension

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector

Classes in io.druid.segment used by io.druid.query.filter

Class and Description
ColumnSelector
ColumnSelectorFactory Factory class for MetricSelectors
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.query.groupby

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector
ObjectColumnSelector
Segment
StorageAdapter
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.groupby.epinephelinae

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
StorageAdapter

Classes in io.druid.segment used by io.druid.query.groupby.epinephelinae.column

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.

Classes in io.druid.segment used by io.druid.query.groupby.strategy

Class and Description
StorageAdapter

Classes in io.druid.segment used by io.druid.query.metadata

Class and Description
Segment

Classes in io.druid.segment used by io.druid.query.scan

Class and Description
Segment
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.search

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector
QueryableIndex Direct interface to memory mapped segments.
Segment

Classes in io.druid.segment used by io.druid.query.select

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector
ObjectColumnSelector
Segment
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.timeboundary

Class and Description
Segment

Classes in io.druid.segment used by io.druid.query.timeseries

Class and Description
Segment
StorageAdapter
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.topn

Class and Description
Capabilities
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
Cursor
DimensionSelector
Segment
StorageAdapter
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.query.topn.types

Class and Description
Capabilities
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
Cursor
DimensionSelector

Classes in io.druid.segment used by io.druid.segment

Class and Description
AbstractSegment
BaseProgressIndicator
BitmapOffset
Capabilities
Capabilities.CapabilitiesBuilder
ColumnSelector
ColumnSelectorFactory Factory class for MetricSelectors
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
CompressedVSizeIndexedSupplier Format - byte 1 - version offsets - indexed integers of length num of rows + 1 representing offsets of starting index of first element of each row in values index and last element equal to length of values column, the last element in the offsets represents the total length of values column.
CompressedVSizeIndexedV3Supplier The format is mostly the same with CompressedVSizeIndexedSupplier(which has version 0x2, so we call it V2), the only difference is V3's offsets is not VSize encoded, it's just compressed.
Cursor
CursorFactory
DimensionHandler Processing related interface A DimensionHandler is an object that encapsulates indexing, column merging/building, and querying operations for a given dimension type (e.g., dict-encoded String, Long).
DimensionIndexer Processing related interface A DimensionIndexer is a per-dimension stateful object that encapsulates type-specific operations and data structures used during the in-memory ingestion process (i.e., work done by IncrementalIndex).
DimensionMerger Processing related interface A DimensionMerger is a per-dimension stateful object that encapsulates type-specific operations and data structures used during the segment merging process (i.e., work done by IndexMerger/IndexMergerV9).
DimensionMergerV9 Processing related interface DimensionMerger subclass to be used with IndexMergerV9.
DimensionSelector
DoubleColumnSelector
DoubleColumnSerializer
FloatColumnSelector An object that gets a metric value.
FloatColumnSerializer
GenericColumnSerializer
IdLookup "Mixin" for DimensionSelector.
IndexableAdapter An adapter to an index
IndexIO
IndexMerger
IndexMerger.DictionaryMergeIterator
IndexMerger.IndexSeeker
IndexSpec IndexSpec defines segment storage format options to be used at indexing time, such as bitmap type, and column compression formats.
LongColumnSelector
LongColumnSerializer Unsafe for concurrent use from multiple threads.
Metadata
MetricHolder
MetricHolder.MetricType
MMappedIndex
NullDimensionSelector
NullStringObjectColumnSelector
ObjectColumnSelector
ProgressIndicator
QueryableIndex Direct interface to memory mapped segments.
QueryableIndexStorageAdapter.TimestampCheckingOffset
Rowboat
Segment
SegmentValidationException
SingleValueDimensionSelector Specialization for DimensionSelectors, always having a single value in DimensionSelector.getRow().
StorageAdapter
StringDimensionMergerV9.IndexSeeker
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.
ZeroDoubleColumnSelector
ZeroFloatColumnSelector
ZeroLongColumnSelector

Classes in io.druid.segment used by io.druid.segment.column

Class and Description
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.segment.data

Class and Description
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
LongColumnSelector

Classes in io.druid.segment used by io.druid.segment.filter

Class and Description
ColumnSelector
ColumnSelectorFactory Factory class for MetricSelectors
LongColumnSelector

Classes in io.druid.segment used by io.druid.segment.historical

Class and Description
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
Cursor
DimensionSelector
SingleValueDimensionSelector Specialization for DimensionSelectors, always having a single value in DimensionSelector.getRow().

Classes in io.druid.segment used by io.druid.segment.incremental

Class and Description
Capabilities
ColumnSelectorFactory Factory class for MetricSelectors
Cursor
CursorFactory
DimensionHandler Processing related interface A DimensionHandler is an object that encapsulates indexing, column merging/building, and querying operations for a given dimension type (e.g., dict-encoded String, Long).
DimensionIndexer Processing related interface A DimensionIndexer is a per-dimension stateful object that encapsulates type-specific operations and data structures used during the in-memory ingestion process (i.e., work done by IncrementalIndex).
IndexableAdapter An adapter to an index
Metadata
Rowboat
StorageAdapter
VirtualColumns Class allowing lookup and usage of virtual columns.

Classes in io.druid.segment used by io.druid.segment.loading

Class and Description
IndexIO
Segment

Classes in io.druid.segment used by io.druid.segment.serde

Class and Description
DoubleColumnSerializer
FloatColumnSerializer
GenericColumnSerializer
LongColumnSerializer Unsafe for concurrent use from multiple threads.

Classes in io.druid.segment used by io.druid.segment.virtual

Class and Description
ColumnSelectorFactory Factory class for MetricSelectors
ColumnValueSelector Base type for interfaces that manage column value selection, e.g.
DimensionSelector
DoubleColumnSelector
FloatColumnSelector An object that gets a metric value.
IdLookup "Mixin" for DimensionSelector.
LongColumnSelector
ObjectColumnSelector
SingleValueDimensionSelector Specialization for DimensionSelectors, always having a single value in DimensionSelector.getRow().
VirtualColumn Virtual columns are "views" created over a ColumnSelectorFactory.
VirtualColumns Class allowing lookup and usage of virtual columns.