Package org.apache.druid.frame.field

Class DoubleArrayFieldReader

java.lang.Object

org.apache.druid.frame.field.NumericArrayFieldReader

org.apache.druid.frame.field.DoubleArrayFieldReader

All Implemented Interfaces:

FieldReader

public class DoubleArrayFieldReader
extends NumericArrayFieldReader

Reader for fields written by NumericArrayFieldWriter.getDoubleArrayFieldWriter(org.apache.druid.segment.ColumnValueSelector, org.apache.druid.frame.FrameType)

Constructor Summary

Constructors

Constructor	Description
DoubleArrayFieldReader(FrameType frameType)

Method Summary

Modifier and Type	Method	Description
ColumnValueSelector<?>	makeColumnValueSelector(org.apache.datasketches.memory.Memory memory, ReadableFieldPointer fieldPointer)	Create a ColumnValueSelector backed by some memory and a moveable pointer.
Column	makeRACColumn(Frame frame, RowSignature signature, String columnName)	Create a Column which provides accses to the rows in the frame, via the Column.toAccessor().

Methods inherited from class org.apache.druid.frame.field.NumericArrayFieldReader

isNull, makeDimensionSelector

Methods inherited from class java.lang.Object

clone, equals, finalize, getClass, hashCode, notify, notifyAll, toString, wait, wait, wait

Constructor Details

DoubleArrayFieldReader

public DoubleArrayFieldReader(FrameType frameType)

Method Details

makeColumnValueSelector

public ColumnValueSelector<?> makeColumnValueSelector(org.apache.datasketches.memory.Memory memory,
 ReadableFieldPointer fieldPointer)

Description copied from interface: FieldReader

Create a ColumnValueSelector backed by some memory and a moveable pointer.

makeRACColumn

public Column makeRACColumn(Frame frame,
 RowSignature signature,
 String columnName)

Description copied from interface: FieldReader

Create a Column which provides accses to the rows in the frame, via the Column.toAccessor().