Package org.apache.druid.segment.column

Interface ColumnHolder

All Known Subinterfaces:

BaseColumnHolder

All Known Implementing Classes:

ColumnPlus

public interface ColumnHolder

Field Summary

Fields

Modifier and Type	Field	Description
static final String	DOUBLE_STORAGE_TYPE_PROPERTY
static final String	TIME_COLUMN_NAME

Method Summary

Modifier and Type	Method	Description
ColumnCapabilities	getCapabilities()
SelectableColumn	getColumn()	Returns a column object that can be used to request specialized interfaces.
default ColumnFormat	getColumnFormat()
default com.google.common.base.Supplier<? extends SelectableColumn>	getColumnSupplier()
ColumnIndexSupplier	getIndexSupplier()
int	getLength()
SettableColumnValueSelector	makeNewSettableColumnValueSelector()	Returns a new instance of a SettableColumnValueSelector, corresponding to the type of this column.
static boolean	storeDoubleAsFloat()

Field Details

TIME_COLUMN_NAME

static final String TIME_COLUMN_NAME

See Also:

• Constant Field Values

DOUBLE_STORAGE_TYPE_PROPERTY

static final String DOUBLE_STORAGE_TYPE_PROPERTY

See Also:

• Constant Field Values

Method Details

storeDoubleAsFloat

static boolean storeDoubleAsFloat()

getCapabilities

ColumnCapabilities getCapabilities()

getColumnFormat

default ColumnFormat getColumnFormat()

getLength

int getLength()

getColumn

SelectableColumn getColumn()

Returns a column object that can be used to request specialized interfaces. For a physical column, this will be an instance of BaseColumn.

See Also:

• which guarantees BaseColumn

getColumnSupplier

@Nullable
default com.google.common.base.Supplier<? extends SelectableColumn> getColumnSupplier()

getIndexSupplier

@Nullable
ColumnIndexSupplier getIndexSupplier()

makeNewSettableColumnValueSelector

SettableColumnValueSelector makeNewSettableColumnValueSelector()

Returns a new instance of a SettableColumnValueSelector, corresponding to the type of this column.