ComplexFrameColumnWriter (druid-processing 30.0.1 API)

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

All Methods Instance Methods Concrete Methods
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 Detail
  - 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