Package io.druid.segment

Interface Summary

Interface	Description
ColumnSelector
ColumnSelectorFactory	Factory class for MetricSelectors
ColumnValueSelector	Base type for interfaces that manage column value selection, e.g.
Cursor
CursorFactory
DimensionHandler<EncodedType extends Comparable<EncodedType>,EncodedKeyComponentType,ActualType extends Comparable<ActualType>>	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<EncodedType extends Comparable<EncodedType>,EncodedKeyComponentType,ActualType extends Comparable<ActualType>>	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<EncodedKeyComponentType>	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).
DimensionMergerLegacy<EncodedKeyComponentType>	Processing related interface DimensionMerger subclass to be used with the legacy IndexMerger.
DimensionMergerV9<EncodedKeyComponentType>	Processing related interface DimensionMerger subclass to be used with IndexMergerV9.
DimensionSelector
FloatColumnSelector	An object that gets a metric value.
GenericColumnSerializer
IdLookup	"Mixin" for DimensionSelector.
IndexableAdapter	An adapter to an index
LongColumnSelector
MetricColumnSerializer
ObjectColumnSelector<T>
ProgressIndicator
QueryableIndex
Segment
StorageAdapter
StringDimensionMergerV9.IndexSeeker
VirtualColumn	Virtual columns are "views" created over a ColumnSelectorFactory.

Class Summary

Class	Description
AbstractSegment
BaseProgressIndicator
BitmapOffset
Capabilities
Capabilities.CapabilitiesBuilder
ColumnSelectorBitmapIndexSelector
CompressedPools
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.
CompressedVSizeIndexedSupplier.CompressedVSizeIndexed
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.
DimensionHandlerUtils
DimensionSelectorUtils
DruidVirtualColumnsModule
FloatColumnSerializer
FloatDimensionHandler
FloatDimensionIndexer
FloatDimensionMergerLegacy
FloatDimensionMergerV9
FloatMetricColumnSerializer
FloatWrappingDimensionSelector
IncrementalIndexSegment
IndexIO
IndexIO.DefaultIndexIOHandler
IndexMerger
IndexMerger.AggFactoryStringIndexed
IndexMerger.MMappedIndexRowIterable
IndexMerger.RowboatMergeFunction
IndexMergerV9
IndexSpec	IndexSpec defines segment storage format options to be used at indexing time, such as bitmap type, and column compression formats.
IntIteratorUtils
IntListUtils
LoggingProgressIndicator
LongColumnSerializer
LongDimensionHandler
LongDimensionIndexer
LongDimensionMergerLegacy
LongDimensionMergerV9
LongMetricColumnSerializer
LongWrappingDimensionSelector
MapVirtualColumn
Metadata
MetricHolder
MMappedIndex
NullDimensionSelector
NullStringObjectColumnSelector
QueryableIndexIndexableAdapter
QueryableIndexSegment
QueryableIndexStorageAdapter
QueryableIndexStorageAdapter.CursorOffsetHolder
ReferenceCountingSegment
Rowboat
RowboatFilteringIndexAdapter
SegmentUtils
SimpleQueryableIndex
SingleScanTimeDimSelector
StringDimensionHandler
StringDimensionIndexer
StringDimensionMergerLegacy
StringDimensionMergerV9
StringDimensionMergerV9.ConvertingIndexedInts
VirtualColumns	Class allowing lookup and usage of virtual columns.
ZeroFloatColumnSelector
ZeroLongColumnSelector

Enum Summary

Enum	Description
MetricHolder.MetricType

Exception Summary

Exception	Description
SegmentMissingException
SegmentValidationException