io.druid.segment

Interface BaseObjectColumnValueSelector<T>

All Known Subinterfaces:

AggregateCombiner<T>, ColumnValueSelector<T>, DimensionSelector, DoubleColumnSelector, FloatColumnSelector, HistoricalColumnSelector<T>, HistoricalDimensionSelector, LongColumnSelector, ObjectColumnSelector<T>, SingleValueHistoricalDimensionSelector

All Known Implementing Classes:

BaseSingleValueDimensionSelector, ConstantColumnValueSelector, ConstantDimensionSelector, DoubleAggregateCombiner, DoubleWrappingDimensionSelector, ExpressionColumnValueSelector, FloatWrappingDimensionSelector, HyperLogLogCollectorAggregateCombiner, LongAggregateCombiner, LongSumAggregateCombiner, LongWrappingDimensionSelector, NilColumnValueSelector, NullDimensionSelector, ObjectAggregateCombiner, SingleLongInputCachingExpressionColumnValueSelector, SingleScanTimeDimSelector, SingleStringInputCachingExpressionColumnValueSelector, SingleStringInputDimensionSelector

public interface BaseObjectColumnValueSelector<T>

Object value selecting polymorphic "part" of the ColumnValueSelector interface. Users of getObject() are encouraged to reduce the parameter/field/etc. type to BaseObjectColumnValueSelector to make it impossible to accidently call any method other than getObject(). All implementations of this interface MUST also implement ColumnValueSelector.

Method Summary

Modifier and Type	Method and Description
Class<T>	classOfObject()
T	getObject()

Method Detail

getObject

@Nullable
T getObject()

classOfObject

Class<T> classOfObject()