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

Class ImageBatchReader.MapColumnDefn

java.lang.Object

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

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

Enclosing class:

ImageBatchReader

protected static class ImageBatchReader.MapColumnDefn
extends ImageBatchReader.ColumnDefn

Responsible for process of the map writer (nested structure). Not only work with scalar, but also provide an entry point for create the nested structures, such as List or List-Map in a Map.

Constructor Summary

Constructors

Constructor	Description
MapColumnDefn(String name)

Method Summary

Modifier and Type	Method	Description
ScalarWriter	addDate(String name)	example : { a : 1 } > { a : 1, b : date() }
ScalarWriter	addDouble(String name)	example : { a : 1 } > { a : 1, b : 2.0 }
ScalarWriter	addIntToMap(TupleWriter writer, String name)	example : { a : 1 } > { a : 1, b : 2 }
ArrayWriter	addList(String name)	example : { a : 1 } > { a : 1, [ b : "2" ] }
ArrayWriter	addListByte(String name)	example : { a : 1 } > { a : 1, [ 0, -1, 0, -1 ] }
ArrayWriter	addListMap(String name)	example : { a : 1 } > { a : 1, [ { b : 2 } ] }
TupleWriter	addMap(String name)	example : { a : 1 } > { a : 1, { b : 2 } }
ScalarWriter	addObject(String name, TypeProtos.MinorType type)	example : { a : 1 } > { a : 1, b : object() }
ScalarWriter	addText(String name)	example : { a : 1 } > { a : 1, b : "2" }
void	bind(RowSetLoader loader)
ImageBatchReader.MapColumnDefn	builder(RowSetLoader loader)
ImageBatchReader.MapColumnDefn	builder(TupleWriter writer)
void	define(SchemaBuilder builder)
void	load(Object value)

Methods inherited from class org.apache.drill.exec.store.image.ImageBatchReader.ColumnDefn

defineText, getName, getOriginName, getWriter

Methods inherited from class java.lang.Object

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

Constructor Details

MapColumnDefn

public MapColumnDefn(String name)

Method Details

bind

public void bind(RowSetLoader loader)

Overrides:

bind in class ImageBatchReader.ColumnDefn

define

public void define(SchemaBuilder builder)

Specified by:

define in class ImageBatchReader.ColumnDefn

load

public void load(Object value)

Specified by:

load in class ImageBatchReader.ColumnDefn

builder

public ImageBatchReader.MapColumnDefn builder(RowSetLoader loader)

builder

public ImageBatchReader.MapColumnDefn builder(TupleWriter writer)

addText

public ScalarWriter addText(String name)

example : { a : 1 } > { a : 1, b : "2" }

Overrides:

addText in class ImageBatchReader.ColumnDefn

addList

public ArrayWriter addList(String name)

example : { a : 1 } > { a : 1, [ b : "2" ] }

Overrides:

addList in class ImageBatchReader.ColumnDefn

addListMap

public ArrayWriter addListMap(String name)

example : { a : 1 } > { a : 1, [ { b : 2 } ] }

Overrides:

addListMap in class ImageBatchReader.ColumnDefn

addMap

public TupleWriter addMap(String name)

example : { a : 1 } > { a : 1, { b : 2 } }

Overrides:

addMap in class ImageBatchReader.ColumnDefn

addListByte

public ArrayWriter addListByte(String name)

example : { a : 1 } > { a : 1, [ 0, -1, 0, -1 ] }

addDouble

public ScalarWriter addDouble(String name)

example : { a : 1 } > { a : 1, b : 2.0 }

addDate

public ScalarWriter addDate(String name)

example : { a : 1 } > { a : 1, b : date() }

addObject

public ScalarWriter addObject(String name,
 TypeProtos.MinorType type)

example : { a : 1 } > { a : 1, b : object() }

addIntToMap

public ScalarWriter addIntToMap(TupleWriter writer,
 String name)

example : { a : 1 } > { a : 1, b : 2 }