Package org.apache.druid.frame.write.columnar

Class ComplexFrameColumnWriter

java.lang.Object

org.apache.druid.frame.write.columnar.ComplexFrameColumnWriter

All Implemented Interfaces:

Closeable, AutoCloseable, FrameColumnWriter

public class ComplexFrameColumnWriter
extends Object
implements FrameColumnWriter

Column writer for complex columns. Dual to ComplexFrameColumnReader.

Method Summary

Modifier and Type	Method	Description
boolean	addSelection()	Adds the current value to the writer
void	close()
long	size()	Size (in bytes) of the column data that will get written when FrameColumnWriter.writeTo(org.apache.datasketches.memory.WritableMemory, long) will be called
void	undo()	Reverts the last added value.
long	writeTo(org.apache.datasketches.memory.WritableMemory memory, long startPosition)	Writes the value of the column to the provided memory at the given position

Methods inherited from class java.lang.Object

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

Method Details

addSelection

public boolean addSelection()

Description copied from interface: FrameColumnWriter

Adds the current value to the writer

Specified by:

addSelection in interface FrameColumnWriter

undo

public void undo()

Description copied from interface: FrameColumnWriter

Reverts the last added value. Undo calls cannot be called in successsion

Specified by:

undo in interface FrameColumnWriter

size

public long size()

Description copied from interface: FrameColumnWriter

Size (in bytes) of the column data that will get written when FrameColumnWriter.writeTo(org.apache.datasketches.memory.WritableMemory, long) will be called

Specified by:

size in interface FrameColumnWriter

writeTo

public long writeTo(org.apache.datasketches.memory.WritableMemory memory,
 long startPosition)

Description copied from interface: FrameColumnWriter

Writes the value of the column to the provided memory at the given position

Specified by:

writeTo in interface FrameColumnWriter

close

public void close()

Specified by:

close in interface AutoCloseable

Specified by:

close in interface Closeable

Specified by:

close in interface FrameColumnWriter