Package org.apache.drill.exec.store.image

Class ImageBatchReader.ColumnDefn

java.lang.Object

org.apache.drill.exec.store.image.ImageBatchReader.ColumnDefn

Direct Known Subclasses:

ImageBatchReader.GenericColumnDefn, ImageBatchReader.ListColumnDefn, ImageBatchReader.MapColumnDefn

Enclosing class:

ImageBatchReader

protected abstract static class ImageBatchReader.ColumnDefn
extends Object

The class mainly process schema definition, index binding, and set up the vector (Column Writers) values. Because the new vector needs to specify schema depends on data type, must override some methods in derived classes.

Constructor Summary

Constructors

Constructor	Description
ColumnDefn(String name)

Method Summary

Modifier and Type	Method	Description
ArrayWriter	addList(String name)
ArrayWriter	addListMap(String name)
TupleWriter	addMap(String name)
ScalarWriter	addText(String name)
void	bind(RowSetLoader loader)
abstract void	define(SchemaBuilder builder)
void	defineText(SchemaBuilder builder)
String	getName()
String	getOriginName()
ScalarWriter	getWriter()
abstract void	load(Object value)

Methods inherited from class java.lang.Object

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

Constructor Details

ColumnDefn

public ColumnDefn(String name)

Method Details

getName

public String getName()

getOriginName

public String getOriginName()

getWriter

public ScalarWriter getWriter()

bind

public void bind(RowSetLoader loader)

defineText

public void defineText(SchemaBuilder builder)

define

public abstract void define(SchemaBuilder builder)

load

public abstract void load(Object value)

addText

public ScalarWriter addText(String name)

addList

public ArrayWriter addList(String name)

addListMap

public ArrayWriter addListMap(String name)

addMap

public TupleWriter addMap(String name)