Uses of Interface
org.apache.druid.segment.column.BaseColumn

Packages that use BaseColumn

Package	Description
org.apache.druid.frame.read.columnar
org.apache.druid.query.aggregation
org.apache.druid.query.rowsandcols.concrete
org.apache.druid.segment
org.apache.druid.segment.column
org.apache.druid.segment.nested

Uses of BaseColumn in org.apache.druid.frame.read.columnar

Classes in org.apache.druid.frame.read.columnar that implement BaseColumn

Modifier and Type	Class	Description
static class	NumericArrayFrameColumnReader.NumericArrayFrameColumn

Methods in org.apache.druid.frame.read.columnar that return BaseColumn

Modifier and Type	Method	Description
BaseColumn	ColumnPlus.getColumn()

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

Classes in org.apache.druid.query.aggregation that implement BaseColumn

Modifier and Type	Class	Description
class	SerializablePairLongDoubleComplexColumn
class	SerializablePairLongFloatComplexColumn
class	SerializablePairLongLongComplexColumn
class	SerializablePairLongStringComplexColumn

Uses of BaseColumn in org.apache.druid.query.rowsandcols.concrete

Methods in org.apache.druid.query.rowsandcols.concrete that return BaseColumn

Modifier and Type	Method	Description
BaseColumn	ColumnHolderRACColumn.getBaseColumn()

Uses of BaseColumn in org.apache.druid.segment

Methods in org.apache.druid.segment that return BaseColumn

Modifier and Type	Method	Description
BaseColumn	ColumnCache.getColumn(String columnName)

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

Subinterfaces of BaseColumn in org.apache.druid.segment.column

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.
interface	DictionaryEncodedColumn<ActualType extends Comparable<? super ActualType>>
interface	NumericColumn

Classes in org.apache.druid.segment.column that implement BaseColumn

Modifier and Type	Class	Description
class	DoublesColumn
class	FloatsColumn
class	GenericIndexedBasedComplexColumn	Implementation of ComplexColumn to be used when complex column serialization is done by using GenericIndexed by using default implementations of "writeToXXX" methods in ComplexColumnSerializer
class	LongsColumn
class	StringUtf8DictionaryEncodedColumn	DictionaryEncodedColumn for a column which has a ByteBuffer based UTF-8 dictionary.
class	UnknownTypeComplexColumn

Methods in org.apache.druid.segment.column that return BaseColumn

Modifier and Type	Method	Description
BaseColumn	ColumnHolder.getColumn()

Uses of BaseColumn in org.apache.druid.segment.nested

Subinterfaces of BaseColumn in org.apache.druid.segment.nested

Modifier and Type	Interface	Description
interface	NestedCommonFormatColumn	Base implementation for columns created with AutoTypeColumnSchema and handled with NestedCommonFormatColumnHandler to allow ease of merge via AutoTypeColumnMerger by providing a common implementation.

Classes in org.apache.druid.segment.nested that implement BaseColumn

Modifier and Type	Class	Description
class	CompressedNestedDataComplexColumn<TStringDictionary extends Indexed<ByteBuffer>>	Implementation of NestedDataComplexColumn which uses a CompressedVariableSizedBlobColumn for the 'raw' StructuredData values and provides selectors for nested field columns specified by ordered lists of NestedPathPart.
class	NestedDataColumnV3<TStringDictionary extends Indexed<ByteBuffer>>
class	NestedDataColumnV4<TStringDictionary extends Indexed<ByteBuffer>>
class	NestedDataColumnV5<TStringDictionary extends Indexed<ByteBuffer>>	Nested data column with optimized support for simple arrays.
class	NestedDataComplexColumn	Describes the basic shape for any 'nested data' (StructuredData) ComplexColumn implementation along with basic facilities for caching any columns created and methods for retrieving selectors for nested field columns.
class	NestedFieldDictionaryEncodedColumn<TStringDictionary extends Indexed<ByteBuffer>>
class	ScalarDoubleColumn	NestedCommonFormatColumn for ColumnType.DOUBLE
class	ScalarLongColumn	NestedCommonFormatColumn for ColumnType.LONG
class	VariantColumn<TStringDictionary extends Indexed<ByteBuffer>>	NestedCommonFormatColumn for single type array columns, and mixed type columns.